Aerosol generating device and aerosol generating system

Abstract

The utility model is suitable for the technical field of aerosol generation, and provides an aerosol generation device and an aerosol generation system.The aerosol generation device comprises a shell, a support assembly and a heating assembly, a main cavity and a first opening are formed in the shell, the support assembly is arranged in the main cavity, the heating assembly is arranged in the main cavity and fixed to the support assembly, and the first opening is formed in the shell; the heating assembly defines a heating cavity aligned with the first opening, an airflow channel is formed in the support assembly, the air inlet end of the airflow channel can be communicated with the space outside the shell, and the air outlet end of the airflow channel is located on the side, away from the first opening, of the heating assembly and faces the heating cavity. According to the aerosol generating device, the airflow channel is formed in the support assembly and can be physically isolated from the heating assembly, aerosol generated by the aerosol generating product cannot overflow into the airflow channel, then the problem that condensate is generated and left in the aerosol generating device is avoided, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerosol generating technology, in particular to an aerosol generating device and an aerosol generating system. BACKGROUND

[0002] In the current aerosol generating device, the gas flow path inside and outside the aerosol generating article is: the gas enters from the top of the aerosol generating device, flows along the gap between the outer circumferential surface of the aerosol generating article and the heating assembly to the bottom surface of the aerosol generating article, then enters the inside of the aerosol generating article, carries the aerosol generated by heating the aerosol generating article to flow outwards, so as to be used by the user.

[0003] The problem is that when the aerosol generated by the aerosol generating article is not sucked in time, it will spread downward and outward, and deposit, thereby forming condensate at the bottom of the aerosol generating article and in the airflow passage (the gap between the aerosol generating article and the heating assembly), which makes it difficult to clean the aerosol generating device, and the residual condensate may produce an odor when heated again, affecting the user experience. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiments of the present application is to provide an aerosol generating device, aiming to solve the technical problem of easy condensate residue in the current aerosol generating device.

[0005] The embodiments of the present application are implemented as follows: an aerosol generating device, comprising:

[0006] a housing having a main cavity and a first opening in communication with the main cavity;

[0007] a support assembly arranged in the main cavity; and

[0008] a heating assembly arranged in the main cavity and fixed to the support assembly, the heating assembly defining a heating cavity aligned with the first opening;

[0009] wherein the support assembly is provided with an airflow passage, an air inlet end of the airflow passage being capable of being communicated to outside the housing, and an air outlet end of the airflow passage being located on a side of the heating assembly facing away from the first opening and facing the heating cavity.

[0010] In one embodiment, the support assembly comprises a main support and a sub-support, the sub-support is provided with a mounting cavity for mounting the heating assembly, and the sub-support is fixedly connected with the main support; the airflow passage is arranged on the main support, and a side of the sub-support facing away from the heating assembly is provided with an air outlet hole in communication with the mounting cavity, and the air outlet end of the airflow passage is aligned with and communicated with the air outlet hole.

[0011] In one embodiment, the main support includes an upper section located outside the auxiliary support, and a middle section connected to the upper section and away from the first opening and the auxiliary support away from the first opening, the airflow passage includes a first passage provided in the upper section, and a second passage provided in the middle section, the first passage and the second passage are bent and communicated.

[0012] In one embodiment, the side of the middle section facing the auxiliary support is provided with a receiving groove, the receiving groove is communicated with the second passage, the end of the auxiliary support away from the first opening is provided with a positioning portion located in the receiving groove; the air outlet hole penetrates through the positioning portion.

[0013] In one embodiment, an annular groove is provided on the outer circumferential surface of the positioning portion, and a first sealing ring is provided between the annular groove and the inner circumferential surface of the receiving groove.

[0014] In one embodiment, the side of the second passage away from the receiving groove penetrates to the outer side of the middle section and forms a first through hole, and a blocking member is provided in the first through hole.

[0015] And / or, the bottom wall of the receiving groove is provided with a second through hole penetrating away from the direction of the heating assembly.

[0016] In one embodiment, the auxiliary support includes an upper support and a lower support spaced apart, and the lower support is located on the side of the upper support away from the first opening; the upper support is provided with a third through hole, and the air inlet end of the first passage is communicated with the third through hole.

[0017] In one embodiment, an auxiliary connecting pipe is provided between the third through hole and the first passage.

[0018] In one embodiment, the aerosol generating device further includes a support pipe, the support pipe is provided on the periphery of the auxiliary support, and the auxiliary connecting pipe is provided on the periphery of the support pipe.

[0019] In one embodiment, the aerosol generating device further includes a cover, the cover is provided on the first opening and can open and close the first opening; the cover includes at least one dust cover, the dust cover is movably mounted on the shell and located in the first opening; wherein, when the first opening is opened, the side of the dust cover away from the first opening simultaneously forms a third opening, and the third opening is communicated with the air inlet end of the airflow passage.

[0020] Another object of the present application is to provide a sol-gel system, which comprises an aerosol generating article and an aerosol generating device as described in the above embodiments; wherein an end surface of the aerosol generating article close to one end of the airflow passage abuts against an inner wall of the air outlet end of the airflow passage.

[0021] The aerosol generating device and the sol-gel system provided by the embodiments of the present application have the following beneficial effects:

[0022] The aerosol generating device provided by the embodiments of the present application has the following beneficial effects: The aerosol generating device provided by the embodiments of the present application has the following beneficial effects:

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a sol-gel system provided by the embodiments of the present application;

[0025] Figure 2 FIG. 2 is a schematic diagram of the cross-sectional structure of the sol-gel system provided by the embodiments of the present application;

[0026] Figure 3 FIG. 3 is a schematic diagram of the exploded structure of an aerosol generating device provided by the embodiments of the present application;

[0027] Figure 4 FIG. 4 is a schematic diagram of the air passage in the aerosol generating device provided by the embodiments of the present application;

[0028] Figure 5 FIG. 5 is a schematic diagram of the assembly structure of a support assembly in the aerosol generating device provided by the embodiments of the present application;

[0029] Figure 6 FIG. 6 is a schematic diagram of the exploded structure of the support assembly in the aerosol generating device provided by the embodiments of the present application;

[0030] Figure 7Figure 1 is a structural schematic diagram of a first support part of a main support of an aerosol generating device according to an embodiment of the present application;

[0031] Figure 8 Figure 2 is a structural schematic diagram of a cover of an aerosol generating device according to an embodiment of the present application;

[0032] Figure 9 Figure 3 is a structural schematic diagram of an upper support of an aerosol generating device according to an embodiment of the present application;

[0033] Figure 10 Figure 4 is a structural schematic diagram of a lower support of an aerosol generating device according to an embodiment of the present application.

[0034] The meanings of the marks in the figures are as follows:

[0035] 200 - aerosol generating system;

[0036] 99 - aerosol generating article;

[0037] 100 - aerosol generating device;

[0038] 1 - housing, 10 - main cavity, 11 - first opening, 14 - fourth opening;

[0039] 2 - operation assembly;

[0040] 3 - battery;

[0041] 4 - circuit board;

[0042] 5 - cover, 50 - second opening, 51 - cover body, 52 - dust cover, 53 - third opening;

[0043] 6 - support assembly, 60 - airflow channel, 601 - first channel, 602 - second channel, 603 - accommodating groove, 604 - air outlet hole;

[0044] 61 - main support, 611 - upper section, 6110 - fifth opening, 612 - middle section, 6121 - first through hole, 6122 - second through hole, 613 - lower section, 615 - first support part, 616 - second support part;

[0045] 63 - auxiliary support, 630 - mounting cavity, 631 - upper support, 6310 - third through hole, 632 - lower support, 6321 - positioning part, 6322 - ring groove;

[0046] 7 - heating assembly, 70 - heating cavity;

[0047] 8 - auxiliary connecting pipe;

[0048] 91 - first sealing ring, 92 - second sealing ring, 94 - plugging piece, 96 - support pipe. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0050] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly fixed to or set on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the purpose of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent. The terms "first" and "second" are used only for the purpose of description and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly specified.

[0051] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0052] Please see Figure 1 , Figure 2 As shown, this application provides an aerosol generation system 200, which includes an aerosol generation device 100 and an aerosol generation article 99 that can be inserted into the aerosol generation device 100. The aerosol generation device 100 heats the internal aerosol generation article 99 to generate aerosols for user use.

[0053] Please see Figure 3 , Figure 4 As shown, the aerosol generating device 100 includes a housing 1, a support assembly 6, and a heating assembly 7. Specifically, the housing 1 has a main cavity 10 inside, and the housing 1 has a first opening 11 communicating with the main cavity 10; please refer to [reference needed]. Figure 3 , Figure 2 and Figure 4 As shown, the support assembly 6 is disposed within the main cavity 10, and the heating assembly 7 is disposed within the main cavity 10 and fixed to the support assembly 6. That is, the support assembly 6 is used to support components including the heating assembly 7 within the main cavity 10, wherein the heating assembly 7 defines a heating cavity 70 aligned with the first opening 11. Furthermore, please refer to... Figure 2 and Figure 4As shown, the bracket assembly 6 is provided with an airflow channel 60. The air inlet end of the airflow channel 60 can be connected to the space outside the housing 1. The air outlet end of the airflow channel 60 is located on the side of the heating assembly 7 away from the first opening 11 and faces the heating chamber 70.

[0054] like Figure 2 and Figure 4 As shown, the first opening 11 is aligned with the heating chamber 70 for the insertion of the aerosol generating article 99. The heating assembly 7 then heats the aerosol generating article 99 inside. The airflow channel 60 is located within the support assembly 6, not between the support assembly 6 and the heating assembly 7, nor between the heating assembly 7 and the aerosol generating article 99. Therefore, the airflow channel 60 is physically isolated from the heating assembly 7 and the outer peripheral surface of the aerosol generating article 99. The outlet end of the airflow channel 60 is located on the side of the heating assembly 7 opposite to the first opening 11. Airflow can enter the bottom of the aerosol generating article 99 (one end inside the housing 1) from the airflow channel 60 and then reach the top of the aerosol generating article 99 (the end outside the housing 1 that contacts the user). Figure 4 In the diagram, the dashed arrow indicates the airflow path. During this process, the airflow does not pass over the outer surface of the aerosol generating product 99. Therefore, no condensate will remain on the outer surface of the aerosol generating product 99 after use.

[0055] The aerosol generation system 200 and aerosol generation device 100 provided in this application embodiment have a heating component 7 disposed in the main cavity 10 of the housing 1 and fixed to the support assembly 6. The heating component 7 defines a heating cavity 70 aligned with the first opening 11 on the housing 1. The support assembly 6 is provided with an airflow channel 60. The air inlet end of the airflow channel 60 can be connected to the outside of the housing 1, and the air outlet end of the airflow channel 60 is located on the side of the heating component 7 away from the first opening 11 and faces the heating cavity 70 and is connected to the heating cavity 70. In this way, the airflow channel 60 is formed inside the support assembly 6, which can achieve physical isolation from the heating component 7 and the aerosol generation product 99. The aerosol generated by the aerosol generation product 99 will not pass through the outer peripheral surface of the aerosol generation product 99, thereby avoiding the problem of condensate generation and residual liquid on the outer peripheral surface of the aerosol generation product 99 and improving the user experience.

[0056] like Figure 2 As shown, the end face of the aerosol generating article 99 near the airflow channel 60 abuts against the inner wall of the outlet end of the airflow channel 60. In this way, the end of the aerosol generating article 99 located inside the aerosol generating device 100 can be completely fitted with the airflow channel 60 without gaps, preventing aerosol diffusion to the area between the bottom end of the aerosol generating article 99 and the airflow channel 60, thereby further preventing condensate residue at the bottom end of the aerosol generating article 99. Please refer to [reference needed].Figures 1-2 As shown, the aerosol-generating device 100 further comprises a battery 3, a circuit board 4, an operating assembly 2, etc. The battery 3 and the circuit board 4 are disposed in the main cavity 10 and connected to each other, and the battery 3 and the circuit board 4 can be further fixed by the support assembly 6. The heating assembly 7 described above is connected to the circuit board 4, and the circuit board 4 is used to control the turn-on and turn-off of the heating assembly 7. As shown in Figure 3 As shown, the housing 1 further has a fourth opening 14, and the operating assembly 2 is disposed at the fourth opening 14 and connected to the circuit board 4. The side of the operating assembly 2 away from the circuit board 4 is used for user operation control.

[0057] Please refer to Figure 4 , Figure 5 As shown, the aerosol-generating device 100 further comprises a cover 5, which is arranged at the first opening 11 and can open and close the first opening 11. When the first opening 11 is opened, the user is allowed to use the aerosol-generating article 99, and when the user does not need to use the aerosol-generating article 99, the cover 5 closes the first opening 11 to avoid foreign matter from entering the inside of the aerosol-generating device 100.

[0058] Please refer to Figure 1 , Figure 4 and Figure 8 In one embodiment, the cover 5 comprises at least one dustproof cover 52, which is movably mounted on the housing 1 at the first opening 11. When the dustproof cover 52 moves to a first position, the first opening 11 is opened, and when the dustproof cover 52 moves to a second position, the first opening 11 is closed.

[0059] The conversion mode of the dustproof cover 52 between the first position and the second position is not limited, for example, it can be rotation, and the dustproof cover 52 is rotatably mounted on the housing 1, or it can be translation, and the dustproof cover 52 is slidably mounted on the housing 1.

[0060] In one specific embodiment, please refer to Figure 2 and Figure 8 As shown, the dustproof cover 52 is rotatably mounted at the first opening 11. When the dustproof cover 52 rotates towards the heating assembly 7, the first opening 11 is opened, and when the dustproof cover 52 rotates away from the heating assembly 7, the first opening 11 is closed.

[0061] More specifically, the cover 5 can comprise two dustproof covers 52, and the two dustproof covers 52 can simultaneously rotate towards and away from the heating assembly 7.

[0062] In other embodiments, the number of dustproof covers 52 can be one or more than two, and there can be other opening and closing modes. The embodiments of the present application are not particularly limited.

[0063] To facilitate the assembly of the heating assembly 7, the support assembly 6, etc. inside the housing 1, in one embodiment, as shown in Figure 7 and Figure 8 The cover 5 also includes a cover body 51 fixedly arranged on the housing 1 at the first opening 11, and a dust cover 52 movably mounted on the cover body 51, which defines a second opening 50 that can be opened and closed on the cover body 51. It can be understood that the second opening 50 is part of the first opening 11, and the aerosol generating article 99 can enter the heating assembly 7 from the second opening 50. In this way, the first opening 11 can have a larger area to facilitate the assembly of the heating assembly 7, the support assembly 6, etc. inside the housing 1, and the movable dust cover 52 can be assembled with the cover body 51 first, rather than being assembled directly with the housing 1, and the shape, size, etc. of the cover body 51 can be designed to be smaller and more flexible to simplify the assembly operation.

[0064] Please refer to Figure 4 and Figure 8 When the dust cover 52 is in the first position, the second opening 50 is opened, and a third opening 53 is formed on the side of the dust cover 52 away from the second opening 50, which communicates with the main cavity 10 inside the housing 1, and in turn, with the air inlet end of the airflow passage 60.

[0065] That is, when the second opening 50 is opened, the third opening 53 is also opened, and when the second opening 50 is closed, the third opening 53 is also closed. In this way, the opening of the second opening 50 and the communication of the air inlet end of the airflow passage 60 with the outside space are simultaneously achieved by the movement of the dust cover 52, and no additional air holes need to be reserved for the airflow passage 60 on other positions of the housing 1.

[0066] Of course, it can be understood that even if the second opening 50 and the third opening 53 are closed, or even if the third opening 53 is not provided, the internal space of the aerosol generating device 100 is not airtight, and there are still small gaps at the connection between the cover 5 and the housing 1, the connection between the housing 1 and the operation assembly 2, etc. for the airflow passage 60 to communicate with the outside space. The provision of the third opening 53 provides sufficient flow area to ensure that the airflow passage 60 has sufficient air flow for the generation of aerosol.

[0067] Please refer to Figure 2 , Figure 3 and Figure 4 In one embodiment, the support assembly 6 includes a main support 61 and a sub-support 63, and the main support 61 is arranged closer to the inner wall of the housing 1, please refer to Figure 5 and Figure 6As shown, the support bracket assembly 6 is mainly composed of the main support 61 and the sub-support 63, etc. The sub-support 63 is mainly used to support and fix the heating assembly 7. In this way, the support bracket assembly 6 as a whole presents a hollow skeleton structure, which can effectively support the heating assembly 7, the circuit board 4, the battery 3, etc. and can be designed to be lighter.

[0068] Specifically, as shown, Figure 4 the sub-support 63 is provided with a mounting cavity 630 for mounting the heating assembly 7, and the side of the sub-support 63 away from the heating assembly 7 is provided with an air outlet hole 604 in communication with the mounting cavity 630. The airflow channel 60 is arranged in the main support 61, and the air outlet end of the airflow channel 60 is aligned with and in communication with the air outlet hole 604.

[0069] The number of air outlet holes 604 can be one or more. The inner diameter of each air outlet hole 604 can be 0.5-1.5 mm, which can be determined in combination with the size of the aerosol generating article 99 and the number of air outlet holes 604, as long as it can facilitate processing and meet the air flow requirement, which is not particularly limited here. Moreover, the form of the air outlet hole 604 is not limited, which is determined in combination with the shape of the sub-support 63, for example, the air outlet hole 604 can be a straight hole, a tapered hole, a stepped hole or a bent hole, etc.

[0070] Please refer to Figure 4 , Figure 6 and Figure 7 , the main support 61 includes an upper section 611 located outside the sub-support 63, and a middle section 612 connected to the end of the upper section 611 away from the cover 5 and the end of the sub-support 63 away from the cover 5. The upper section 611 and the middle section 612 are connected by bending, for example, they are connected in a general "L" shape, to support the end of the sub-support 63 close to the cover 5 and the end of the sub-support 63 away from the cover 5 respectively, to ensure stable installation of the sub-support 63.

[0071] Among them, part of the airflow channel 60 (here defined as the first channel 601) is arranged in the upper section 611 and extends generally along the insertion direction of the aerosol generating article 99 (which can be the axial direction X of the aerosol generating device 100), and the other part of the airflow channel 60 (here defined as the second channel 602) is arranged in the middle section 612 and extends generally along the radial direction Y of the aerosol generating device 100; and the first channel 601 and the second channel 602 are in communication, and the air outlet end of the second channel 602 is aligned with and in communication with the air outlet hole 604 on the sub-support 63. Here, the first channel 601 and the second channel 602 are connected by bending, more specifically, they can be connected by bending at a right angle.

[0072] In addition, please refer to Figure 3 , Figure 6 and Figure 4As shown, the main support 61 can further include a lower section 613 located on the side of the middle section 612 away from the upper section 611, which is mainly used for fixing the support circuit board 4, the battery 3, the operation assembly 2, and the like. It should be noted that "upper", "middle", and "lower" here are only relative directions defined based on the use habits of users, and are used to indicate the relative positions of the parts of the main support 61.

[0073] Please refer to Figure 2 and Figure 4 As shown, in one embodiment, the side of the middle section 612 facing the auxiliary support 63, i.e., the air outlet end of the second channel 602, is arranged in the air outlet hole 604, or the side of the auxiliary support 63 facing the middle section 612 is arranged in the air outlet end of the second channel 602. That is, in order to ensure reliable docking and communication between the air outlet hole 604 and the air outlet end of the second channel 602, one of the auxiliary support 63 and the middle section 612 can be sleeved on the other.

[0074] Specifically, please refer to Figure 4 and Figure 10 As shown, the side of the middle section 612 facing the auxiliary support 63 is provided with a receiving groove 603 in communication with the second channel 602, or the air outlet end of the second channel 602 forms the receiving groove 603, the side of the auxiliary support 63 away from the cover 5 forms a positioning portion 6321, the air outlet hole 604 penetrates the positioning portion 6321, and the positioning portion 6321 is located in the receiving groove 603.

[0075] On this basis, the positioning portion 6321 and the inner wall of the receiving groove 603 can be fixedly connected by interference fit, and a general sealed connection is formed to reduce air leakage when flowing from the middle section 612 to the auxiliary support 63. Alternatively, the positioning portion 6321 and the inner wall of the receiving groove 603 can be connected by a sealing structure, such as sealing glue, a first sealing ring 91, and the like. Please refer to Figure 10 As shown, the outer circumferential surface of the positioning portion 6321 is provided with an annular groove 6322, and the first sealing ring 91 is arranged between the annular groove 6322 and the inner circumferential surface of the receiving groove 603, as shown in Figure 2 and Figure 4 In other optional embodiments, sealing glue can be arranged between the outer circumferential surface of the positioning portion 6321 and the inner circumferential surface of the receiving groove 603.

[0076] As shown in Figure 4 The receiving groove 603 is opened toward the auxiliary support 63, i.e., is generally opened along the axial direction X of the aerosol generating device 100, while the second channel 602 is generally opened along the radial direction Y of the aerosol generating device 100, so the second channel 602 penetrates to the inner side wall of the receiving groove 603. In order to avoid the positioning portion 6321 blocking the second channel 602, in one embodiment, please refer to Figure 2 andFigure 4 As shown, the height of the positioning portion 6321 is less than the depth of the accommodating groove 603, so that the positioning portion 6321 is spaced apart from the bottom wall of the accommodating groove 603 by a distance, which is the space left by the second passage 602. In turn, by such arrangement, the second passage 602 can remain substantially straight within the middle section 612 without requiring a large bending design to match the direction of the air outlet hole 604 on the positioning portion 6321, which is conducive to simplifying the manufacturing difficulty of the second passage 602, the middle section 612 and the main support 61.

[0077] In one embodiment, as shown in Figure 3 , Figure 6 and Figure 7 , in the axial direction X of the aerosol generating device 100, the main support 61 includes an upper section 611, a middle section 612 and a lower section 613, and in the radial direction Y of the aerosol generating device 100, the main support 61 can not be integral, but can include a first support portion 615 and a second support portion 616 which are manufactured separately and connected. The purpose of such arrangement is to further facilitate the processing and forming of the main support 61, and meanwhile, the butt joint of the first support portion 615 and the second support portion 616 along the radial direction Y of the aerosol generating device 100 is also sufficient to ensure the stability and strength of the main support 61 as a whole.

[0078] The first passage 601, the second passage 602 and the accommodating groove 603 can be partially formed on the first support portion 615 and partially formed on the second support portion 616. Alternatively, as shown in Figure 7 , in one embodiment of the present application, the first passage 601, the second passage 602 and the accommodating groove 603 are formed on the first support portion 615. The purpose of such arrangement is that although the airflow passage 60 does not require complete air tightness, the fewer leakage points on the air flow path are better. The formation of the first passage 601, the second passage 602 and the accommodating groove 603 on the first support portion 615 can reduce the leakage points of the airflow passage 60, and there is no need for high sealing requirement between the first support portion 615 and the second support portion 616.

[0079] The first support portion 615 and the second support portion 616 can be manufactured by injection molding respectively, which is conducive to obtaining an integral airflow passage 60.

[0080] Please continue to refer to Figure 2 and Figure 4As shown, in one embodiment, since the second channel 602 extends generally along the radial direction Y of the aerosol generating device 100, and the accommodation groove 603 extends generally along the axial direction X of the aerosol generating device 100, and the first channel 601 extends generally along the axial direction X of the aerosol generating device 100, the second channel 602 is connected to the first channel 601 and the accommodation groove 603 in a bent manner, specifically, in a right-angled bent manner. In order to facilitate the manufacturing of the second channel 602, an end of the second channel 602 away from the accommodation groove 603 can be designed as an open end to facilitate injection molding or other processing methods. As shown in Figure 2 、 Figure 4 As shown in FIGS. 11 and 12, an end of the second channel 602 away from the accommodation groove 603 penetrates to the outer side surface of the middle section 612 and forms a first through hole 6121. Then, a blocking member 94 is arranged at the first through hole 6121 to close or substantially close the first through hole 6121.

[0081] The specific form of the blocking member 94 is not limited, for example, it can be a flexible blocking block which is compressed in the first through hole 6121, or a rigid blocking block which is fixed in the first through hole 6121 by interference or adhesion.

[0082] Please continue to refer to Figure 2 、 Figure 4 and Figure 7 As shown, a second through hole 6122 penetrating away from the heating assembly 7 is arranged on the bottom wall of the accommodation groove 603. The purpose of this arrangement is that, on the one hand, the circuit board 4 and the battery 3 are usually arranged on the side of the middle section 612 away from the heating assembly 7, and the second through hole 6122 can correspond to the airflow sensor (not shown) on the circuit board 4, so that when the user uses the aerosol generating device 100 to draw the aerosol generating article 99, the airflow speed and air pressure in the accommodation groove 603 change obviously, and the gas flow is detected by the airflow sensor, which can be recorded as a use of the user; on the other hand, it is also convenient for the molding of the accommodation groove 603.

[0083] Please refer to Figure 3 、 Figure 4 、 Figure 9 and Figure 10As shown, in one embodiment, the auxiliary support 63 comprises an upper support 631 and a lower support 632, the upper support 631 and the lower support 632 are arranged at intervals along the axial direction X of the aerosol generating device 100, the upper support 631 is arranged close to the cover 5, and the lower support 632 is arranged close to the middle section 612. The purpose of such arrangement is that the split auxiliary support 63 is more convenient for the assembly of the heating assembly 7 inside, and at the same time, the lower support 632 and the upper support 631 are arranged at intervals, which can stably support the aerosol generating article 99 in multiple points in the axial direction X, so as to ensure that the position of the aerosol generating article 99 remains fixed during use.

[0084] Correspondingly, the upper support 631 and the lower support 632 are fixedly arranged on the main support 61. Please refer to Figure 2 、 Figure 4 and Figure 7 As shown, the upper section 611 has a certain distance in the axial direction X of the aerosol generating article 99, so as to be able to support the outer peripheral surface of the upper support 631.

[0085] More specifically, please refer to Figure 6 and Figure 7 As shown, the end of the upper section 611 facing the cover 5 is designed as a hollow structure to form a fifth opening 6110, and the cover body 51 is arranged in the fifth opening 6110, so that the upper section 611 simultaneously realizes the support and fixation of the cover 5.

[0086] Please refer to Figure 2 、 Figure 4 and Figure 9 As shown, the upper support 631 is provided with a third through hole 6310, and the air inlet end of the first channel 601 communicates with the third through hole 6310.

[0087] Please refer to Figure 2 、 Figure 3 、 Figure 4 As shown, the inner peripheral surface of the auxiliary support 63 and the heating assembly 7 are provided with a second sealing ring 92. Specifically, the inner peripheral surface of the upper support 631 and the heating assembly 7, and the inner peripheral surface of the lower support 632 and the heating assembly 7 are both provided with the second sealing ring 92. The purpose of such arrangement is that the heating assembly 7 involves more heating components such as resistance wires, and the resistance wires are relatively thin, so that the soft contact between the heating assembly 7 and the auxiliary support 63 through the second sealing ring 92 can avoid the problem that the heating assembly 7 fails due to stress generated by the auxiliary support 63 during assembly and use, and improve the functional reliability of the aerosol generating device 100.

[0088] Further, please refer to Figure 2 、 Figure 3 and Figure 4As shown, an auxiliary connecting pipe 8 is arranged between the upper support 631 and the first channel 601, and the auxiliary connecting pipe 8 communicates the third through hole 6310 and the first channel 601. The auxiliary connecting pipe 8 is a hollow structure separate from the main support 61, and the space inside the auxiliary connecting pipe 8 communicates the first channel 601 and the third through hole 6310. The purpose of such an arrangement is that, since the upper support 631 is located inside the upper section 611, and the upper section 611 is provided with the first channel 601, in order to facilitate the manufacture of the third through hole 6310 on the upper support 631 and the first channel 601, for example, the third through hole 6310 and the first channel 601 are as straight as possible, have less bending or even no bending, and the first channel 601 is as short as possible, a separate auxiliary connecting pipe 8 is used to replace a part of the first channel 601, so that the first channel 601 can be formed only at a position on the upper section 611 close to the middle section 612. Please refer to Figure 2 and Figure 4 for details. This simplifies the manufacturing process of the main support 61 and the first channel 601 thereof.

[0089] The auxiliary connecting pipe 8 is manufactured separately from the main support 61. The auxiliary connecting pipe 8 can be in interference fit with the third through hole 6310 and the first channel 601, for example, the two ends of the auxiliary connecting pipe 8 are inserted into the third through hole 6310 and the first channel 601 in interference fit; or the two ends of the auxiliary connecting pipe 8 are inserted into the third through hole 6310 and the first channel 601 and fixed in the third through hole 6310 and the first channel 601 by gluing; or the two ends of the auxiliary connecting pipe 8 can be fixed together with the upper support 631 and the main support 61 by welding.

[0090] Please refer to Figure 2 , Figure 3 and Figure 4 for details. In one embodiment, the aerosol generating device 100 further comprises a support pipe 96 arranged at the periphery of the auxiliary support 63 and fixedly connected with the upper support 631, the lower support 632, and the main support 61. The purpose of such an arrangement is that, first, the support pipe 96 further supports the upper support 631 and the lower support 632, ensures the stability of the auxiliary support 63, and ensures the stability of the heating assembly 7; second, the heating assembly 7 is limited in the support pipe 96, and by the cooperation of the two second sealing rings 92, a relatively closed space is formed around the aerosol generating article 99 and the heating assembly 7, the heat generated by the heating assembly 7 is all used to heat the aerosol generating article 99, and the aerosol can be prevented from being emitted to outside the support pipe 96, thereby ensuring that the aerosol can all flow to the head of the aerosol generating article 99; third, the heating assembly 7 is isolated from the main support 61, and the heat generated by the heating assembly 7 is prevented from being transmitted to the main support 61 or even the shell 1, thereby preventing the shell 1 from being overheated.

[0091] As shown in Figure 2and Figure 4 As shown, the auxiliary connecting tube 8 is arranged at the periphery of the support tube 96. In this way, the first passage 601 can be completely isolated from the heating assembly 7, the outer peripheral surface of the aerosol generating article 99, and facilitate assembly of the auxiliary connecting tube 8.

[0092] The specific material of the support tube 96 is not limited, as long as it can provide sufficient support force and withstand the high temperature generated during the heating process.

[0093] The above only represents the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aerosol-generating device, characterized by, The aerosol generating device comprises: a housing having a main cavity and a first opening in communication with the main cavity; a bracket assembly arranged in the main cavity; and a heating assembly arranged in the main cavity and fixed to the bracket assembly, the heating assembly defining a heating cavity aligned with the first opening. The bracket assembly comprises a main bracket and a sub-bracket, the sub-bracket being provided with a mounting cavity for mounting the heating assembly, the sub-bracket being fixedly connected to the main bracket; the air flow channel is arranged on the main bracket, and the side of the sub-bracket away from the heating assembly is provided with an air outlet hole in communication with the mounting cavity, the air outlet end of the air flow channel being aligned with and in communication with the air outlet hole. The main bracket comprises an upper section located outside the sub-bracket, and a middle section connected to the end of the upper section away from the first opening and to the end of the sub-bracket away from the first opening, the air flow channel comprising a first channel arranged in the upper section and a second channel arranged in the middle section, the first channel and the second channel being bent and communicated.

2. The aerosol-generating device of claim 1, wherein, The side of the middle section facing the sub-bracket is provided with a receiving groove in communication with the second channel, and the end of the sub-bracket away from the first opening is provided with a positioning portion located in the receiving groove; the air outlet hole penetrates through the positioning portion. 3.The aerosol-generating device of claim 2, wherein, An annular groove is arranged on the outer circumferential surface of the positioning portion, and a first sealing ring is arranged between the annular groove and the inner circumferential surface of the receiving groove.

4. The aerosol-generating device of claim 3, wherein, The side of the second channel away from the receiving groove penetrates to the outer side of the middle section and forms a first through hole, and a plugging member is arranged in the first through hole.

5. The aerosol-generating device of claim 4, wherein, The sub-bracket comprises an upper bracket and a lower bracket spaced apart, and the lower bracket is arranged on the side of the upper bracket away from the first opening; a third through hole is arranged on the upper bracket, and the air inlet end of the first channel is in communication with the third through hole. 6.The aerosol generating device of claim 4, wherein, An auxiliary connecting pipe is arranged between the third through hole and the first channel. The aerosol generating device further comprises a support pipe arranged on the periphery of the sub-bracket, and the auxiliary connecting pipe is arranged on the periphery of the support pipe. 7.The aerosol-generating device of claim 3, wherein, The aerosol generating device further comprises a cover arranged on the first opening and capable of opening and closing the first opening; the cover comprises at least one dust cover movably mounted on the housing and located in the first opening; when the first opening is opened, the side of the dust cover away from the first opening simultaneously forms a third opening, and the third opening is in communication with the air inlet end of the air flow channel.

8. The aerosol-generating device of claim 7, wherein, The aerosol generating device comprises:

9. The aerosol-generating device of claim 8, wherein, an aerosol generating article; and 10. The aerosol-generating device of any of claims 1 to 9, wherein, the aerosol generating device according to any one of claims 1 to 10; wherein the end surface of the aerosol generating article close to the air flow channel abuts against the inner wall of the air outlet end of the air flow channel.

11. An aerosol-generating system comprising: ​

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