Heating element assembly, aerosol generating device and aerosol generating system

Abstract

The utility model relates to the technical field of aerosol atomization, and provides a heating body assembly, an aerosol generating device and an aerosol generating system. The heating element assembly comprises: a heating element; an airflow channel is formed in the heating body, and the heating body comprises a heating part; the heating part is used for being inserted into an aerosol generating substrate contained in the aerosol generating device, so that the air outlet of the airflow channel is communicated with the interior of the aerosol generating substrate, and air in the airflow channel and the aerosol generating substrate are heated; and the backflow device is used for increasing the heat exchange area of the air in the airflow channel. According to the backflow device, the heat exchange area of the air for heat exchange in the airflow channel is increased, the heat exchange efficiency between the air entering the airflow channel from the heating body assembly and the heating body assembly is improved, and the effect of heating the aerosol generating substrate by the air is enhanced. The heating element assembly can be applied to the aerosol generating device and the aerosol generating system.

Description

Technical Field

[0001] The utility model relates to the technical field of electronics, and particularly relates to a heating element assembly, an aerosol generating device and an aerosol generating system. Background Art

[0002] An aerosol generating device is used to atomize an aerosol generating substrate. With the development of the electronic atomization system industry, heating the aerosol generating substrate by an electric heating method is currently the main way for the aerosol generating device to atomize the aerosol generating substrate. An aerosol generating device usually heats and atomizes the aerosol generating substrate through a heating element assembly or an independent heating element.

[0003] Some existing heating element assemblies or heating elements have an air flow channel inside, and need to be inserted into the inside of the aerosol generating substrate to heat the aerosol generating substrate (for example, while heating the aerosol generating substrate in a heat radiation manner, the air in the air flow channel is heated, and then the heated air is input into the inside of the aerosol generating substrate through the outlet of the air flow channel, so as to continue to heat the aerosol generating substrate with the heated air). However, due to the defect that the heat exchange effect between the air entering the above air flow channel and the heating element is not high in the existing heating element assembly or heating element. For example, in the heating element assembly disclosed in the patent publication number CN218921663U, the air entering the air flow channel flows directly to the air outlet of the air flow channel in a straight line, resulting in a low heat exchange area of the air and / or a too short heat exchange path, and further resulting in the defect that the heat exchange efficiency between the air entering the above air flow channel and the heating element is not high, and further resulting in a poor effect of continuously heating the aerosol generating substrate with the heated air subsequently.

[0004] Therefore, in view of the above deficiencies of the prior art, it is necessary to make improvements. Summary of the Invention

[0005] The main technical problem to be solved by the utility model is to provide a heating element assembly, an aerosol generating device and an aerosol generating system. The heating element assembly increases the heat exchange area of the air for heat exchange in the air flow channel by using a reflux device, improves the heat exchange efficiency between the air entering the air flow channel of the heating element assembly and the heating element assembly, and enhances the effect of the air heating the aerosol generating substrate. The above heating element assembly can be applied to the above aerosol generating device and aerosol generating system.

[0006] According to a first aspect, in one embodiment, a heating element assembly is provided. The heating element assembly can be applied to an aerosol generating device. The heating element assembly includes: a heating element; an air flow channel is provided inside the heating element, and the heating element includes a heating portion; wherein, the heating portion is used to be inserted into the interior of an aerosol generating substrate accommodated in the aerosol generating device, so that the air outlet of the air flow channel communicates with the interior of the aerosol generating substrate, and the heating portion is used to heat the air flowing through the air flow channel and the aerosol generating substrate; a refluxer, which is arranged in the air flow channel and is used to change the flow direction of the air in the air flow channel at least once, so as to increase the flow path length of the air in the air flow channel.

[0007] According to a first aspect, in one embodiment, another heating element assembly is also provided, which is applied to an aerosol generating device. The heating element assembly includes: a housing; an air flow channel is provided inside the housing; wherein, the housing is used to be inserted into the interior of an aerosol generating substrate accommodated in the aerosol generating device, so that the air outlet of the air flow channel communicates with the interior of the aerosol generating substrate; a refluxer, which is arranged in the air flow channel and is used to change the flow direction of the air in the air flow channel at least once, so as to increase the flow path length of the air in the air flow channel.

[0008] In one embodiment, the refluxer includes a reflux pipe; the reflux pipe is arranged in the air flow channel to divide the air flow channel into a first sub-air flow channel and a second sub-air flow channel. The first sub-air flow channel is located inside the reflux pipe, and the second sub-air flow channel is located between the inner surface of the air flow channel and the outer surface of the reflux pipe.

[0009] In one embodiment, the refluxer further includes a first stop piece; the reflux pipe is provided with a first opening, and the first opening serves as the air inlet of the refluxer and communicates with the air inlet of the air flow channel; wherein, the first stop piece is arranged between the inner surface of the air flow channel and the outer surface of the reflux pipe to prevent the air flowing in from the air inlet of the air flow channel from flowing from between the inner surface of the air flow channel and the outer surface of the reflux pipe to the air outlet of the air flow channel.

[0010] In one embodiment, the air inlet of the refluxer is located on the side of the air inlet of the air flow channel away from the air outlet of the air flow channel; and / or the air outlet of the refluxer is located on the side of the air outlet of the air flow channel away from the air inlet of the air flow channel.

[0011] In one embodiment, the refluxer further includes a second stop piece; the second stop piece is arranged at the end of the reflux pipe away from the first opening and is used to abut against the inner wall of the end of the air flow channel away from the air inlet, so that the end of the reflux pipe away from the first opening is spaced from the inner wall of the air flow channel; the second sub-air flow channel is a channel jointly defined by the first stop piece, the second stop piece, the outer surface of the reflux pipe and the inner surface of the air flow channel, and the second stop piece is provided with a second opening communicating the first sub-air flow channel and the second sub-air flow channel.

[0012] In one embodiment, the diameter of the second opening is smaller than the diameter of the channel inside the reflux pipe.

[0013] In one embodiment, the number of air outlet openings of the air flow channel is plural; wherein, at least part of the air outlet openings are arranged offset on the outer wall surface of the heating part.

[0014] According to a second aspect, in one embodiment, an aerosol generating device is provided. The aerosol generating device includes: a housing having a receiving cavity; a second receiving cavity for receiving an aerosol generating substrate; a heating element assembly, which is the heating element assembly in any one of the embodiments of the present application; and a power supply assembly for supplying power to the heating element assembly.

[0015] According to a third aspect, in one embodiment, an aerosol generating system is provided. The aerosol generating system includes: an aerosol generating device; the aerosol generating device is the aerosol generating device in any one of the embodiments of the present application; and an aerosol generating substrate, at least part of which is arranged in the receiving cavity.

[0016] The beneficial effects of the present application are:

[0017] A heating element assembly provided by the present application includes: a heating element; an air flow channel is provided inside the heating element, and the heating element includes a heating part; wherein, the heating part is used to be inserted into the inside of the aerosol generating substrate accommodated in the aerosol generating device, so that the air outlet of the air flow channel is communicated with the inside of the aerosol generating substrate, and heat the air flowing through the air flow channel and the aerosol generating substrate; a reflux device is arranged in the air flow channel, and the reflux device is used to increase the heat exchange area of the air in the air flow channel by changing the flow direction of the air in the air flow channel at least once; by arranging a reflux device in the heating element assembly, the heat exchange path is lengthened, the heat exchange area of the air in the air flow channel for heat exchange is increased, thereby improving the heat exchange efficiency between the air entering the air flow channel of the heating element assembly and the heating element assembly, and also enhancing the effect of the heated air continuing to heat the aerosol generating substrate subsequently; this heating element assembly can be applied to the aerosol generating device and the aerosol generating system of the present application;

[0018] Another heating element assembly provided by the present application includes: a housing; an air flow channel is provided inside the housing; wherein, the housing is used to be inserted into the inside of an aerosol generation matrix placed in an aerosol generating device, so that the air outlet of the air flow channel is communicated with the inside of the aerosol generation matrix; a refluxer is arranged in the air flow channel, and the refluxer is used to change the flow direction of the air flow in the air flow channel at least once, so as to increase the flow path length of the air flow in the air flow channel, and further increase the heat exchange area of the air in the air flow channel; by arranging a refluxer in the heating element assembly, the above-mentioned flow path length is increased, the heat exchange area of the air in the air flow channel for heat exchange is increased, and thus the heat exchange efficiency between the air entering the air flow channel of the heating element assembly and the refluxer is improved, and the effect of continuously heating the aerosol generation matrix by the heated air subsequently is also enhanced; this heating element assembly can be applied to the aerosol generating device and the aerosol generating system of the present application. Description of the Drawings

[0019] Figure 1 It is a schematic cross-sectional view of a heating element assembly of an embodiment along its axial center line;

[0020] Figure 2 It is an overall external schematic view of a refluxer of an embodiment;

[0021] Figure 3 It is a schematic cross-sectional view of a refluxer of an embodiment along the axial center line of the heating element;

[0022] Figure 4 It is a schematic structural view of an aerosol generating device of an embodiment. Detailed Description of the Embodiment

[0023] The present utility model will be further described in detail below in conjunction with the drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many details are described 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, and 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 submerged by excessive description. 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 according to the description in the specification and the general technical knowledge in the art.

[0024] 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 a manner that is obvious to 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 a necessary sequence, unless it is stated otherwise that a certain sequence must be followed.

[0025] The serial numbers assigned to the components in this text, 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 this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0026] As mentioned above, the aerosol generating device is used to atomize the aerosol-forming substrate. For example, the aerosol generating device generates the required aerosol by heating the aerosol-forming substrate with a heated heating element assembly.

[0027] Since when the user sucks the above-mentioned aerosol through a specific component on the aerosol generating device or aerosol generating system, the time that the air sucked by the user stays at that time from the air inlet to the air outlet of the air flow channel in the heating element assembly is certain, and the heating power of the heating element assembly for heating the air flowing through the air flow channel is also certain. Therefore, if it is desired to improve the defect of the low heat exchange efficiency between the air entering the air flow channel and the heating element assembly existing in the existing heating element assembly, it can only be achieved by increasing the heat exchange area of the air in the air flow channel and other means. Therefore, the technical concept of this application is: by using a reflux device that can increase the heat exchange area of the air in the air flow channel, to improve the defect of the low heat exchange efficiency between the air entering the air flow channel and the heating element assembly existing in the existing heating element assembly.

[0028] The technical solution of this application will be described in detail below in conjunction with embodiments.

[0029] In some embodiments, this application provides a heating element assembly. This heating element assembly can be applied to an aerosol generating device. Please refer to Figure 1 , the air flow channel A has an air inlet a; this heating element assembly includes:

[0030] Heating element; an air flow channel A is provided inside the heating element, and the heating element includes a heating part 10; wherein, the heating part 10 is used to be inserted into the inside of the aerosol - generating substrate placed in the aerosol - generating device, so that the air outlet b of the air flow channel communicates with the inside of the aerosol - generating substrate, and heats the air flow (such as air) flowing through the air flow channel and the aerosol - generating substrate; a refluxer 30 is arranged in the air flow channel A, and the refluxer 30 is used to increase the flow path length of the air in the air flow channel by changing the flow direction of the air flow in the air flow channel at least once, thereby increasing the heat - exchange area of the air for heat exchange in the air flow channel.

[0031] In some embodiments, while heating the aerosol - generating substrate in a heat - radiation manner, the heating element can first heat the air (such as air) in the air flow channel, and then input the heated air into the inside of the aerosol - generating substrate through the outlet of the air flow channel, so as to continuously heat the aerosol - generating substrate with the heated air.

[0032] In some embodiments, the air flow channel can be cylindrical, or can be in other shapes.

[0033] It should be noted that the specific setting of the above - mentioned "air flow channel" can directly adopt the existing technology, so the specific structure of the above - mentioned "air flow channel" will not be elaborated here.

[0034] It should be noted that those skilled in the art can determine the type of the above - mentioned aerosol - generating substrate according to actual needs. For example, the aerosol - generating substrate can include at least one aerosol - forming agent. An aerosol - forming agent is any suitable known compound or mixture of compounds that is easy to form a thick and stable aerosol during use and is substantially resistant to thermal degradation at a certain temperature. The aerosol - generating substrate can also be solid. Since the specific type of the aerosol - generating substrate is common knowledge in the art, the specific composition of the aerosol - generating substrate will not be elaborated here.

[0035] In some embodiments, the present application also provides another heating - element assembly. The heating - element assembly can also be applied to an aerosol - generating device. The heating - element assembly includes: a housing; an air flow channel is provided inside the housing; wherein, the housing is used to be inserted into the inside of the aerosol - generating substrate placed in the aerosol - generating device, so that the air outlet of the air flow channel communicates with the inside of the aerosol - generating substrate; a refluxer is arranged in the air flow channel, and is used to change the flow direction of the air flow in the air flow channel at least once, so as to increase the flow path length of the air flow in the air flow channel, thereby increasing the heat - exchange area of the air for heat exchange in the air flow channel. Among them, the refluxer can also be used to heat the air entering the air flow channel.

[0036] It should be noted that the refluxer in this embodiment can heat the air entering the air flow channel and then use the heated air to heat the aerosol generation matrix; or directly heat the aerosol generation matrix by thermal radiation. That is to say, the refluxer in this embodiment can be regarded as a heating element.

[0037] In some embodiments, the above-mentioned housing can be made of ceramic material.

[0038] In some embodiments, a heating element can be arranged on the surface of the refluxer for generating heat under the condition of being powered on.

[0039] In some embodiments, the refluxer can directly generate heat under the condition of being powered on.

[0040] In some embodiments, the heating element assembly further includes: an electromagnetic coil. The electromagnetic coil can be arranged around the above-mentioned housing. The electromagnetic coil generates an electromagnetic field under the condition of being powered on, and the refluxer generates induced heat in the electromagnetic field to heat the air entering the air flow channel and the aerosol generation matrix;

[0041] In some embodiments, the air flow (such as air) in the air flow channel can be heated by the above-mentioned refluxer, and then the heated air is input into the interior of the aerosol generation matrix through the outlet of the air flow channel to heat the aerosol generation matrix by the heated air.

[0042] In some embodiments, at least a part of the refluxer is located in the air flow channel. That is to say, a part of the refluxer can be arranged outside the air flow channel.

[0043] In some embodiments, the refluxer can be completely located inside the air flow channel.

[0044] In some embodiments, the refluxer includes a reflux pipe; the reflux pipe is arranged in the air flow channel to divide the air flow channel into a first sub-air flow channel and a second sub-air flow channel. The first sub-air flow channel is located inside the reflux pipe, and the second sub-air flow channel is located between the inner surface of the air flow channel and the outer surface of the reflux pipe. In this way, the flow direction of the air flow in the air flow channel can be changed at least once to increase the flow path length of the air flow in the air flow channel, and further increase the heat exchange area of the air in the air flow channel for heat exchange.

[0045] In some embodiments, the refluxer can include a reflux pipe and a first stop piece. The reflux pipe is provided with a first opening, and the first opening serves as the air inlet of the refluxer and is communicated with the air inlet of the air flow channel. The first stop piece is arranged between the inner surface of the air flow channel and the outer surface of the reflux pipe to prevent the air flow flowing in from the air inlet of the air flow channel from flowing from between the inner surface of the air flow channel and the outer surface of the reflux pipe to the air outlet of the air flow channel.

[0046] In some embodiments, the reflux pipe can be cylindrical, and the inside of the reflux pipe can have a cavity that runs through the axial direction of the reflux pipe. This cavity can serve as a passage for air to flow through.

[0047] In some embodiments, the reflux pipe can also be in other shapes. For example, the reflux pipe can be in an S shape, etc., to change the flow direction of air in the air flow channel multiple times, increasing the length of the heat exchange path that the air passes through from the air inlet of the air flow channel to the air outlet of the air flow channel, and thus further increasing the heat exchange area of the air in the air flow channel.

[0048] In some embodiments, please refer to Figure 2 and Figure 3 , the air inlet 31a of the refluxer 30 is located on the side of the air inlet a of the air flow channel A that is far from the air outlet b of the air flow channel A. For example, the air inlet of the refluxer is lower than the air inlet of the air flow channel in the length direction of the heating element. That is to say, the plane where the air inlet of the refluxer is located is lower than the plane where the air inlet of the air flow channel is located in the length direction of the heating element.

[0049] It should be noted that setting the air inlet of the refluxer lower than the air inlet of the air flow channel is to increase the length of the heat exchange path that the air passes through from the air inlet of the air flow channel to the air outlet of the air flow channel, and thus further increase the heat exchange area of the air in the air flow channel.

[0050] In some embodiments, please refer to Figure 2 and Figure 3 , the air outlet 31b of the refluxer 30 is located on the side of the air outlet b of the air flow channel A that is far from the air inlet a of the air flow channel A. For example, the air outlet 31b of the refluxer 30 is higher than the air outlet b of the air flow channel A in the length direction of the heating element. That is to say, the plane where the air outlet 31b of the refluxer 30 is located is higher than the plane where the air outlet b of the air flow channel A is located in the length direction of the heating element.

[0051] It should be noted that setting the air outlet 31b of the refluxer 30 higher than the air outlet b of the air flow channel A is also to increase the length of the heat exchange path that the air passes through from the air inlet a of the air flow channel A to the air outlet b of the air flow channel A, and thus further increase the heat exchange area of the air in the air flow channel A.

[0052] In some embodiments, please refer to Figure 2 and Figure 3 , Figure 3Shown is a schematic cross-sectional view of the refluxer 30 located within the air flow passage A along the axial centerline of the heating element; the air flow passage A has an air inlet a and an air outlet b; the refluxer 30 includes a reflux pipe 31, a first stop piece 32, and a second stop piece 33; wherein, the reflux pipe 31 is disposed within the air flow passage A to divide the air flow passage A into a first sub-air flow passage A1 and a second sub-air flow passage A2, the first sub-air flow passage A1 is located inside the reflux pipe 31, and the second sub-air flow passage A2 is located between the inner surface of the air flow passage A and the outer surface of the reflux pipe 31. The first sub-air flow passage A1 is located inside the reflux pipe 31, and the second sub-air flow passage A2 is located between the inner surface of the air flow passage A and the outer surface of the reflux pipe 31.

[0053] Wherein, the second stop piece 32 is disposed at one end of the reflux pipe 31 away from the first opening, and is used to abut against the inner wall of the end of the air flow passage A away from the air inlet a, so that the end of the reflux pipe 31 away from the first opening is spaced from the inner wall of the air flow passage A; the second sub-air flow passage A2 refers to the passage jointly defined by the first stop piece 32, the second stop piece 33, the outer surface of the reflux pipe 31, and the inner surface of the air flow passage A. The second stop piece 33 is provided with a second opening 33a, and the second opening 33a is used to communicate the first sub-air flow passage A1 with the second sub-air flow passage A2.

[0054] In some embodiments, please refer to Figure 3 , the flow path or flow direction of the air within the air flow passage A is: the air enters the air flow passage A from the air inlet a, then enters the reflux pipe 31 through the air inlet of the refluxer 30, flows along the first sub-air flow passage A1, enters the second sub-air flow passage A2 through the second stop piece 33, and finally flows out of the air flow passage through the air outlet b of the air flow passage A. That is to say, the Figure 3 refluxer 30 in this

[0055] In some embodiments, please refer to Figure 2 The diameter of the second opening 33a is smaller than the diameter of the passage within the reflux pipe 31.

[0056] It should be noted that by setting the diameter of the second opening 33A to be smaller than the diameter of the passage within the reflux pipe 31, the flow rate of the above-mentioned air can be made to increase after entering the second sub-air flow passage A2 from the first sub-air flow passage A1.

[0057] In some embodiments, the number of the air outlets b of the air flow passage A is multiple; wherein, at least part of the air outlets are arranged in a staggered manner on the outer wall surface of the heating part 10.

[0058] In some embodiments, at least part of the air outlets b are not in the same plane.

[0059] In some embodiments, the air outlets b of some air flow channels A are located on a straight line, while the air outlets b of some other air flow channels A are not on a straight line.

[0060] In some embodiments, the above-mentioned straight line can be the straight line where the axial center line of the air flow channel A is located.

[0061] In some embodiments, the above-mentioned straight line can also be a straight line in other directions, and no specific limitation is imposed on the straight line here.

[0062] It should be noted that setting at least some of the air outlets b not on a straight line is to distribute some of the air outlets staggeredly on the surface of the heating part 10.

[0063] It can be seen that in some embodiments, by distributing some of the air outlets b staggeredly on the surface of the heating part 10, on the one hand, it can make the path of the air from entering the air flow channel A to flowing out of the air flow channel A longer, and on the other hand, it can also make the air flowing in the air flow channel A generate turbulence, that is, further change the flow direction of the air in the air flow channel A multiple times, thereby further enhancing the heating effect of the heating part 10 on the air in the air flow channel A, and finally achieving the effect of enhancing the heating of the aerosol generation matrix by the above-mentioned heated air.

[0064] In some embodiments, the air includes the air entering the air flow channel A from the air inlet a of the air flow channel A.

[0065] In some embodiments, the air can also include other substances. Those skilled in the art can also determine the specific type of the above-mentioned air according to actual needs.

[0066] In some embodiments, the heating element further includes a connecting part; the connecting part is used to connect with other components in the aerosol generating device; the air inlet a of the air flow channel A is located at the connecting part.

[0067] In some embodiments, the air outlet of the air flow channel is located at the heating part of the heating element; wherein, the air inlet of the refluxer is close to the connecting part, and the air inlet of the refluxer is used to communicate with the outside of the aerosol generating device through the air inlet of the air flow channel.

[0068] In some embodiments, the air outlet of the refluxer is used to communicate with the inside of the aerosol generation matrix through the air outlet of the air flow channel.

[0069] In some embodiments, the above-mentioned refluxer can be used as the heating part.

[0070] In some embodiments, the heating part and the connecting part are integrally connected. The heating part and the connecting part can also be detachably connected.

[0071] In some embodiments, the materials of the heating part and the connecting part can be the same. The materials of the heating part and the connecting part can also be different.

[0072] In some embodiments, there may be no actual boundary between the heating part and the connecting part. In the present application, the heating element is divided into the heating part and the connecting part only for the convenience of explaining the technical solution of the present application.

[0073] It should be noted that those skilled in the art can determine the specific categories of the above-mentioned "other components" according to actual needs. For example, the above-mentioned "other components" can be a special base, or other structures within the aerosol generating device, such as a housing, etc. No specific limitation is imposed on the other components here.

[0074] It can be seen that in some embodiments, in the present application, by providing a refluxer in the heating element assembly, it is possible to avoid the situation where the air entering the air flow channel in the heating element assembly directly flows to the air outlet of the air flow channel in a straight line, that is, without changing the flow direction of the air in the air flow channel, resulting in a low heat exchange area of the air and / or a too short heat exchange path. That is, by changing the flow direction of the air in the air flow channel at least once, the heat exchange path of the air is increased, and the heat exchange area of the air for heat exchange (such as convective heat exchange) in the air flow channel is increased, thereby improving the heat exchange efficiency between the air entering the air flow channel of the heating element assembly and the heating element assembly, and also enhancing the effect of continuously heating the aerosol generation substrate by the heated air subsequently.

[0075] The above is an explanation of a heating element assembly. Some embodiments of the present application also disclose an aerosol generating device. Please refer to Figure 4 and the aerosol generating device includes:

[0076] A housing 1 having a receiving cavity 11; the receiving cavity 11 is used to receive an aerosol generation substrate 12;

[0077] A heating element assembly 2, and the heating element assembly 2 is the heating element assembly of any one of the embodiments in the present application;

[0078] A power supply assembly 3 for supplying power to the heating element assembly.

[0079] The above-mentioned housing and power supply assembly can both adopt the existing technologies in the art, so no further description is given here. It should be noted that those skilled in the art can install the power supply assembly at other preset positions within the aerosol generating device according to actual needs.

[0080] In some embodiments, the aerosol generating device further includes a base and an electromagnetic coil. The electromagnetic coil is disposed around the heating part of the heating element. The electromagnetic coil generates an electromagnetic field under the energized condition, and the heating part generates induced heat in the electromagnetic field to heat the aerosol generation substrate. The heating element is installed on the base.

[0081] It should be noted that those skilled in the art can determine the positional relationship and connection relationship between the above-mentioned housing, heating element assembly and power supply assembly according to actual needs. The positional relationship and connection relationship between the above-mentioned housing, heating element assembly and power supply assembly can be determined according to the prior art, so they will not be elaborated here. Those skilled in the art can also add other components and / or structures to the aerosol generating device according to actual needs.

[0082] The above is the description of an aerosol generating device. Some embodiments of the present application also disclose an aerosol generating system. The aerosol generating system includes: an aerosol generating device; the aerosol generating device is the aerosol generating device of any one of the embodiments in the present application; an aerosol generating substrate, at least partially disposed in the accommodating cavity. The above-mentioned aerosol generating substrate can adopt the prior art in the art, so it will not be elaborated here.

[0083] It should be noted that those skilled in the art can determine the positional relationship and connection relationship between the above-mentioned aerosol generating device and the aerosol generating substrate according to actual needs. The positional relationship and connection relationship between the above-mentioned aerosol generating device and the aerosol generating substrate can also be determined according to the prior art, so they will not be elaborated here. Those skilled in the art can also add other components (such as an atomizer, etc.), products and / or structures to the aerosol generating system according to actual needs.

[0084] This document has been described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope hereof. For example, the various operating steps and the components for performing the operating steps can be implemented in different ways according to a particular application or any number of cost functions associated with the operation of the system (e.g., one or more steps can be deleted, modified or incorporated into other steps).

[0085] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. Additionally, as understood by those skilled in the art, the principles herein can be reflected in a computer program product on a computer-readable storage medium that is pre-loaded with computer-readable program code. Any tangible, non-transitory computer-readable storage medium can be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROMs, DVDs, Blu-ray discs, etc.), flash memories, and / or the like. These computer program instructions can be loaded onto a general-purpose computer, a special-purpose computer, or other programmable data processing devices to form a machine, such that the instructions executed on the computer or other programmable data processing devices can generate a device for implementing the specified functions. These computer program instructions can also be stored in a computer-readable memory, which can direct the computer or other programmable data processing devices to operate in a specific manner, so that the instructions stored in the computer-readable memory can form a manufactured article, including an implementation device for implementing the specified functions. The computer program instructions can also be loaded onto a computer or other programmable data processing devices, thereby performing a series of operation steps on the computer or other programmable devices to generate a computer-implemented process, such that the instructions executed on the computer or other programmable devices can provide steps for implementing the specified functions.

[0086] Although the principles herein have been shown in various embodiments, many modifications of the structures, arrangements, proportions, elements, materials, and components that are particularly applicable to specific environments and operating requirements can be used without departing from the principles and scope of this disclosure. The above modifications and other changes or revisions will be included within the scope of this document.

[0087] The foregoing detailed description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Therefore, the consideration of this disclosure will be in an illustrative rather than a restrictive sense, and all such modifications will be included within its scope. Similarly, the advantages, other advantages, and solutions to problems of the various embodiments have been described above. However, the benefits, advantages, solutions to problems, and any elements that can produce these, or solutions that make them more explicit, should not be construed as critical, essential, or necessary. The term "comprising" and any other variants used herein are non-exclusive inclusions, such that a process, method, article, or device that includes a list of elements not only includes these elements but also other elements not expressly listed or belonging to the process, method, system, article, or device. Additionally, the term "coupled" and any other variants used herein refer to physical connection, electrical connection, magnetic connection, optical connection, communication connection, functional connection, and / or any other connection.

[0088] Those skilled in the art will recognize that many changes may be made to the details of the above-described embodiments without departing from the basic principles of the present invention. Therefore, the scope of the present invention should be determined solely by the claims.

Claims

1. A heating element assembly, applied to an aerosol generating device, characterized in that: include: Heating body; The heating element has an airflow channel therein, and the heating element includes a heating portion; wherein the heating portion is used to be inserted into the interior of the aerosol generating substrate contained in the aerosol generating device, so that the air outlet of the airflow channel is connected to the interior of the aerosol generating substrate, and the heating portion is used to heat the airflow flowing through the airflow channel and the aerosol generating substrate; The reflow device is arranged in the air flow channel and is used to change the flow direction of the air flow in the air flow channel at least once to increase the flow path length of the air flow in the air flow channel.

2. A heating element assembly, applied to an aerosol generating device, characterized in that: include: A housing; the housing has an air flow passage therein; wherein the housing is used to be inserted into the interior of an aerosol generating substrate contained in the aerosol generating device so that an air outlet of the air flow passage communicates with the interior of the aerosol generating substrate; The reflow device is arranged in the air flow channel and is used to change the flow direction of the air flow in the air flow channel at least once to increase the flow path length of the air flow in the air flow channel.

3. The heating element assembly according to claim 1 or 2, characterized in that: The reflux device comprises a reflux pipe; The return pipe is arranged in the airflow channel to divide the airflow channel into a first sub-airflow channel and a second sub-airflow channel, the first sub-airflow channel is located inside the return pipe, and the second sub-airflow channel is located between the inner surface of the airflow channel and the outer surface of the return pipe.

4. The heating element assembly according to claim 3, characterized in that: The returner also includes a first stopper; The return pipe is provided with a first opening, which serves as an air flow inlet of the return device and is connected to an air inlet of the air flow channel; Wherein, the first stopper is arranged between the inner surface of the airflow channel and the outer surface of the return pipe, and is used to prevent the airflow flowing in from the air inlet of the airflow channel from flowing from between the inner surface of the airflow channel and the outer surface of the return pipe to the air outlet of the airflow channel.

5. The heating element assembly according to claim 3, characterized in that: The air flow inlet of the reflow device is located at a side of the air inlet of the air flow channel away from the air outlet of the air flow channel; and / or The air flow outlet of the return device is located at a side of the air outlet of the air flow channel away from the air inlet of the air flow channel.

6. The heating element assembly according to claim 4, characterized in that: The returner also includes a second stopper; The second stopper is disposed at one end of the return pipe away from the first opening, and is used to abut against the inner wall of one end of the air flow channel away from the air inlet, so that the end of the return pipe away from the first opening is spaced apart from the inner wall of the air flow channel; The second sub-airflow channel is a channel defined by the first stop plate, the second stop plate, the outer surface of the return pipe and the inner surface of the airflow channel, and the second stop plate is provided with a second opening connecting the first sub-airflow channel and the second sub-airflow channel.

7. The heating element assembly according to claim 6, characterized in that: The diameter of the second opening is smaller than the diameter of the passage in the return pipe.

8. The heating element assembly according to claim 1 or 2, characterized in that: The airflow channel has a plurality of air outlets, wherein at least some of the air outlets are staggeredly arranged on the outer wall surface of the heating portion.

9. An aerosol generating device, characterized in that: include: The housing has a receiving cavity; the receiving cavity is used to receive the aerosol generating matrix; A heating element assembly, wherein the heating element assembly is the heating element assembly according to any one of claims 1 to 8; A power supply component is used to supply power to the heating element component.

10. An aerosol generating system, characterized in that: include: Aerosol generating devices; The aerosol generating device is the aerosol generating device as claimed in claim 9; The aerosol generating substrate is at least partially disposed in the accommodating cavity.

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