Heating body assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol atomization, and provides a heating body assembly and an aerosol generating device. The assembly comprises a base body, an air flow channel is formed in the base body, and an air outlet of the air flow channel is formed in the base body; wherein the base body is used for being inserted into an aerosol generating matrix contained in the aerosol generating device and heating the aerosol generating matrix; at least part of the heat exchange part is located in the airflow channel, the heat exchange part comprises a plurality of heat exchange sub-parts, the heat exchange sub-parts are integrally connected, the airflow channel is divided into a plurality of sub-airways through the heat exchange sub-parts, and the heat exchange sub-parts are used for heating airflow flowing through the sub-airways; air flow of the sub air channels is heated through the heat exchange sub parts, and then the heat exchange area of the air flow in the air flow channel is increased. And further, the heat exchange efficiency between the airflow in the airflow channel and the heating body and the baking effect of the heated airflow on the aerosol generating substrate are improved. The device comprises the assembly.

Description

Technical Field

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

[0002] An aerosol generating device is used to atomize an aerosol forming substrate. With the development of the electronic atomization system industry, heating the aerosol forming substrate in a non-combustion heating manner and / or in an electric heating manner are the main ways for the current aerosol generating device to atomize the aerosol forming substrate. The aerosol generating device usually atomizes the aerosol forming substrate through a heating element assembly or an independent heating element.

[0003] The existing heating element assembly or heating element has an air flow channel inside, and needs to be inserted into the inside of the aerosol forming substrate to heat the aerosol forming substrate (for example, while heating the aerosol forming substrate in a heat radiation manner, the gaseous substance (such as air) in the air flow channel is heated, and then the heated gaseous substance is input into the inside of the aerosol forming substrate through the outlet of the air flow channel to continuously heat the aerosol forming substrate through the heated gaseous substance).

[0004] However, due to the defect that the heat exchange effect between the gaseous substance entering the above air flow channel and the heating element in the existing heating element assembly or heating element is not high. For example, in the heating element assembly disclosed in CN218921663U, the gaseous substance 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 and / or a short heat exchange path of the gaseous substance, and further resulting in the defect that the heat exchange efficiency between the gaseous substance 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 forming substrate by the heated gaseous substance subsequently.

[0005] Therefore, in view of the above deficiencies of the prior art, it is necessary to make improvements. Summary of the Utility Model

[0006] The main technical problem to be solved by the utility model is to provide a heating element assembly and an aerosol generating device. The above heating element assembly can increase the heat exchange area of the gaseous substance in the air flow channel of the heating element, thereby improving the heat exchange efficiency between the gaseous substance in the air flow channel and the heating element and the baking effect of the heated gaseous substance on the aerosol forming substrate.

[0007] According to a first aspect, in one embodiment, a heating element assembly is provided and applied to an aerosol generating device. The heating element assembly includes:

[0008] A substrate, within which there is an air flow channel, and an air outlet of the air flow channel is disposed on the substrate; wherein, the substrate is for being inserted into and placed within an aerosol generating substrate in the aerosol generating device, and heating the aerosol generating substrate.

[0009] A heat exchange part, at least a part of the heat exchange part is located within the air flow channel, the heat exchange part includes a plurality of heat exchange sub-parts, the plurality of heat exchange sub-parts are integrally connected, the heat exchange sub-parts divide the air flow channel into a plurality of sub-air channels, and the heat exchange sub-parts are for heating the air flowing through the sub-air channels.

[0010] In one embodiment, air outlets are disposed at positions on the side wall of the substrate corresponding to the sub-air channels.

[0011] In one embodiment, both the length and width of the heat exchange sub-part are greater than the thickness of the heat exchange sub-part.

[0012] In one embodiment, the length directions of the heat exchange sub-parts are all the same as the axial direction of the air flow channel.

[0013] In one embodiment, the heat exchange sub-part extends spirally or in a wavy shape along the axial direction of the air flow channel.

[0014] In one embodiment, in the case where at least a part of the heat exchange part is disposed within the air flow channel, each of the heat exchange sub-parts is integrally connected through a side of the heat exchange sub-part away from the inner wall of the air flow channel to form the heat exchange part.

[0015] In one embodiment, the thermal conductivity of the heat exchange part is greater than a first preset threshold value.

[0016] In one embodiment, the materials of the substrate and the heat exchange part are metals, and a heating layer is disposed on the substrate and / or the heat exchange part; or, the materials of the substrate and the heat exchange part are soft magnetic materials; or, one of the substrate and the heat exchange part is made of a soft magnetic material, and the other is made of a metal.

[0017] In one embodiment, there is a turbulent flow part on the heat exchange sub-part, and the included angle between the turbulent flow part and the air flow direction within the sub-air channel is an obtuse angle.

[0018] According to a second aspect, in one embodiment, an aerosol generating device is provided. The aerosol generating device includes:

[0019] A housing, having a receiving cavity; the receiving cavity is for receiving an aerosol generating substrate;

[0020] A heating element assembly, the heating element assembly being the heating element assembly as described in any one of the embodiments herein;

[0021] A power supply component for powering the heating element component.

[0022] The beneficial effects of this application are:

[0023] A heating element component of this application includes: a substrate, an air flow channel is provided inside the substrate, and an air outlet of the air flow channel is arranged on the substrate; wherein, the substrate is used to be inserted into and placed inside an aerosol generation matrix in the aerosol generation device and heat the aerosol generation matrix; a heat exchange part, at least part of the heat exchange part is located in the air flow channel, the heat exchange part includes a plurality of heat exchange sub-parts, the plurality of heat exchange sub-parts are integrally connected, the heat exchange sub-parts divide the air flow channel into a plurality of sub-air channels, and the heat exchange sub-parts are used to heat the air flow flowing through the sub-air channels; by dividing the air flow channel into a plurality of sub-air channels through the heat exchange sub-parts, the heat exchange area of the air flow in the air flow channel is increased, and the heat exchange efficiency between the air flow in the air flow channel and the heating element and the baking effect of the heated air flow on the aerosol generation matrix are improved; the above-mentioned device includes the above-mentioned component; the above-mentioned system includes the above-mentioned device. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a heating element component of an embodiment;

[0025] Figure 2 It is a schematic structural diagram of a heating element component of another embodiment;

[0026] Figure 3 It is a schematic structural diagram of an aerosol generation device of an embodiment;

[0027] Figure 4 It is a schematic structural diagram of a heating element component of another embodiment. Detailed Description of the Invention

[0028] The present invention 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 make this application better understood. 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 this application are not shown or described in the specification, in order to avoid the core part of this application being overwhelmed by too much 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.

[0029] 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 that a certain sequence must be followed.

[0030] 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 as used in this application, "connection" and "coupling", unless otherwise specified, both include direct and indirect connection (coupling).

[0031] As described 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.

[0032] 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 gaseous substance (such as air, etc.) sucked by the user stays at the inlet of the air flow channel to the 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 gaseous substance 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 gaseous substance 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 gaseous substance in the air flow channel and other means. Therefore, the technical concept of this application is: by providing a heat exchange part or a heating part in the above-mentioned air flow channel, the heat exchange part or the heating part increases the heat exchange area of the gaseous substance in the air flow channel by increasing the area of the contact surface with the gaseous substance (such as increasing its surface area), thereby overcoming the defect of the low heat exchange efficiency between the gaseous substance entering the air flow channel and the heating element assembly existing in the existing heating element assembly.

[0033] The technical solution of this application will be described in detail below with reference to the embodiments.

[0034] This application provides a heating element assembly. The heating element assembly is applied to an aerosol generating device. The heating element assembly includes:

[0035] A substrate having an air flow channel therein, and an air outlet of the air flow channel is provided on the substrate; wherein, the substrate is used to be inserted into an aerosol generating substrate placed in an aerosol generating device and heat the aerosol generating substrate; a heat exchange part, at least part of the heat exchange part is located in the air flow channel, the heat exchange part includes a plurality of heat exchange sub-parts, the plurality of heat exchange sub-parts are integrally connected, and the heat exchange sub-parts divide the air flow channel into a plurality of sub-air channels, and the heat exchange sub-parts are used to heat the air flowing through the sub-air channels. It can be understood that by dividing the air flow channel into a plurality of sub-air channels by the heat exchange sub-parts, the heat exchange area of the air flow in the air flow channel can be increased, and the heat exchange efficiency between the air flow in the air flow channel and the heating element and the baking effect of the heated air flow on the aerosol generating substrate can be improved.

[0036] In some embodiments, air outlets are provided at positions corresponding to the sub-air channels on the side wall of the substrate. Those skilled in the art can determine the position of the air outlet according to actual needs.

[0037] In some embodiments, the heat exchange part can be detachably connected to one end of the substrate.

[0038] In some embodiments, the heat exchange part can be integrally connected to one end of the substrate.

[0039] In some embodiments, the heat exchange part is used to absorb part of the heat generated by the substrate and increase the heat exchange area of the air flow in the air flow channel by increasing the area of the contact surface between the heat exchange part and the air flow.

[0040] In some embodiments, while the substrate heats the aerosol generating substrate in a heat radiation manner, the air flow (such as air) in the air flow channel is first heated, and then the heated air flow is input into the interior of the aerosol generating substrate through the outlet of the air flow channel, so as to continue to heat the aerosol generating substrate through the heated air flow.

[0041] In some embodiments, the air flow channel can be cylindrical, and the air flow channel can also be in other shapes.

[0042] It should be noted that the specific setting of the above "air flow channel" can directly adopt the existing technology, so the specific structure of the above "air flow channel" will not be elaborated here.

[0043] It should be noted that those skilled in the art can determine the type of the above 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.

[0044] In some embodiments, please refer to Figure 1 , the heating element assembly includes a base body 100 and a heat exchange part 200; the heat exchange part 200 includes a plurality of heat exchange sub-parts 210, and the plurality of heat exchange sub-parts 210 are integrally connected; wherein, the length and width of the heat exchange sub-part 210 are both greater than the thickness of the heat exchange sub-part 210. The heat exchange part 200 can at least partially or entirely extend into the air flow channel A ( Figure 1 not shown in

[0045] In some embodiments, please refer to Figure 2 , the heating element assembly includes: a base body 100, a heat exchange part 200 ( Figure 2 not shown in

[0046] and a base body base 300. The base body base 300 is used for detachably connecting to one end of the base body 100 close to the base body base 300. The heat exchange part is detachably connected to the base body base 300. The heat exchange part can also be integrally connected to the base body base 300.

[0047] In some embodiments, the base body base can also be integrally connected to one end of the base body close to the base body base. The heat exchange part is detachably connected to the base body base. The heat exchange part can also be integrally connected to the base body base.

[0048] In some embodiments, please refer to Figure 1 , the heat exchange sub-part 210 is flat, so that the length and width of the heat exchange sub-part are both much greater than the thickness of the heat exchange sub-part, thereby as much as possible increasing the surface area of the heat exchange part 200, and finally achieving the purpose of increasing the heat exchange area of the air flow in the above air flow channel. For example, when the heat exchange part includes a plurality of heat exchange sub-parts, the heat exchange sub-part can be a long and narrow rectangle; the length direction of the heat exchange sub-part is the same as the axial direction of the air flow channel; the heat exchange sub-part can also be wavy, thereby as much as possible increasing the surface area of the heat exchange part. Those skilled in the art can determine the shape of the heat exchange sub-part according to actual needs.

[0049] In some embodiments, please refer to Figure 1 , the length directions of the heat exchange sub-parts 210 are all the same as the air flow channel ( Figure 1is the same as the axial direction (not shown). That is, the heat exchange part does not change the original flow direction and flow path of the air flow in the air flow channel. The heat exchange part only increases the heat exchange area of the air flow in the air flow channel by increasing the area of the contact surface with the air flow (such as increasing the surface area of the heat exchange part), thereby improving the heat exchange efficiency of the heating element assembly.

[0050] In some embodiments, please refer to Figure 1 , when at least part of the heat exchange part 200 is arranged in the air flow channel, each heat exchange sub-part 210 is integrally connected through the side of the heat exchange sub-part 210 away from the inner wall of the air flow channel to form the heat exchange part 200.

[0051] In some embodiments, the overlapping regions of several heat exchange sub-parts form a straight line, and the direction of the straight line is the same as or substantially the same as the axial direction of the air flow channel, so as to avoid changing the original flow direction and flow path of the air flow in the air flow channel.

[0052] In some embodiments, the heat exchange sub-part extends spirally or in a wavy shape along the axial direction of the air flow channel. Those skilled in the art can determine the specific relevant parameters of the spiral extension or wavy extension according to actual needs, and no specific limitation is made here. By this means, when the length of the heat exchange sub-part along the axial direction remains unchanged, the path length of the air flow flowing through the heat exchange sub-part can be increased, thereby further increasing the heat exchange area of the air flow in the air flow channel, and improving the heat exchange efficiency between the air flow in the air flow channel and the heating element and the baking effect of the heated air flow on the aerosol-forming substrate.

[0053] In some embodiments, the angles between adjacent heat exchange sub-parts can be the same. For example, when each heat exchange sub-part is integrally connected through the side of the heat exchange sub-part away from the inner wall of the air flow channel to form the heat exchange part, if the heat exchange part is composed of four heat exchange sub-parts, the cross-section of the heat exchange part perpendicular to the axial direction of the air flow channel is in a cross shape.

[0054] In some embodiments, the angles between adjacent heat exchange sub-parts can be different.

[0055] In some embodiments, the thermal conductivity of the heat exchange part is greater than a first preset threshold. The reason for setting the thermal conductivity of the heat exchange part to be greater than the first preset threshold is to ensure that the thermal conductivity of the heat exchange part is relatively high, so that the heat absorbed by the heat exchange part from the substrate can be efficiently transferred to the above-mentioned air flow through the outer surface of the heat exchange part, so as to achieve the purpose of enhancing the heat exchange efficiency of the air flow in the air flow channel. Those skilled in the art can determine this threshold according to actual needs.

[0056] In some embodiments, the base body and the heat exchange part are made of metal, and a heating layer is provided on the base body and / or the heat exchange part; alternatively, the base body and the heat exchange part are made of soft magnetic materials; alternatively, one of the base body and the heat exchange part is made of soft magnetic materials (such as SUS430 (a ferritic stainless steel material) or SPCE (a steel grade number), etc.), and the other is made of metal (such as copper or aluminum alloy, etc.). Those skilled in the art can also determine the specific materials of the heat exchange part and the base body according to actual needs. The heating layer is used to heat the air flowing through the sub-air ducts. In some embodiments, the heating layer can generate heat by itself and heat the air flowing through the sub-air ducts. In some embodiments, the heating layer can also absorb heat from other components and heat the air flowing through the sub-air ducts.

[0057] In some embodiments, a turbulence part is provided on the heat exchange sub-part. The turbulence part is used to make the air flowing through the sub-air ducts generate turbulence. For example, the turbulence part can be a protrusion with a preset shape. The turbulence part can be integrally connected to the heat exchange sub-part. The turbulence part can also be detachably connected to the heat exchange sub-part. Those skilled in the art can determine the shape of the turbulence part according to actual needs. In some embodiments, by setting the angle between the turbulence part and the flow direction of the air in the sub-air ducts to an obtuse angle, the air flowing through the sub-air ducts can generate more turbulence, thereby further improving the heat exchange efficiency between the air in the air flow channel and the heating element and the baking effect of the heated air on the aerosol generation matrix.

[0058] In some embodiments, the heating element assembly further includes: an electromagnetic coil. The electromagnetic coil can be arranged around the above-mentioned base body. The electromagnetic coil generates an electromagnetic field under the condition of being energized, and the base body generates induced heat in the electromagnetic field to heat the air entering the air flow channel and the aerosol generation matrix;

[0059] In some embodiments, the air in the air flow channel (such as air) can be heated by the above-mentioned base body, 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.

[0060] In some embodiments, at least a part of the heat exchange part is located in the air flow channel. That is to say, a part of the heat exchange part can be arranged outside the air flow channel.

[0061] In some embodiments, the heat exchange part can be completely located inside the air flow channel.

[0062] In some embodiments, the number of air outlets of the air flow channel is multiple.

[0063] In some embodiments, the air flow includes air entering the air flow channel from the air inlet of the air flow channel.

[0064] In some embodiments, the gas flow may also include other substances. Those skilled in the art can also determine the specific type of the above gas flow according to actual needs.

[0065] It can be seen that in some embodiments, in the present application, a heat exchange part is arranged in the above gas flow channel, and the heat exchange part increases the heat exchange area of the gas flow in the gas flow channel by increasing the area of the contact surface with the gas flow (such as the surface area of the heat exchange part), thereby overcoming the defect that the heat exchange efficiency between the gas flow entering the gas flow channel and the heating element assembly in the existing heating element assembly is not high.

[0066] The present application provides another heating element assembly. The heating element assembly can be applied to an aerosol generating device. The heating element assembly includes:

[0067] A housing; a gas flow channel is provided inside the housing; wherein, the housing is used to be inserted into the interior of an aerosol generating substrate placed in the aerosol generating device, so that the air outlet of the gas flow channel is communicated with the interior of the aerosol generating substrate;

[0068] A heating part, at least a part of the heating part is located in the gas flow channel, and the heating part is used to heat the gas flow entering the gas flow channel, and increases the heat exchange area of the gas flow in the gas flow channel by increasing the surface area of the heating part.

[0069] In some embodiments, the gas flow channel has a plurality of air outlets.

[0070] It should be noted that in some embodiments, please refer to Figure 1 , the heat exchange part 200 in the first heating element assembly and the heating part in the second heating element assembly can adopt exactly the same structure, and the difference between the two is only that: the heat exchange part 200 in the first heating element assembly itself does not generate heat, that is, it only absorbs heat from other objects (such as the substrate 100); while the heating part in the second heating element assembly itself can generate heat and can transfer the heat to the gas flow in the gas flow channel A and the housing.

[0071] In some embodiments, the heating part can be detachably connected to one end of the housing.

[0072] In some embodiments, the heating part can be integrally connected to one end of the housing.

[0073] In some embodiments, please refer to Figure 4 , the heating element assembly includes: a housing 400, a heating part 500 ( Figure 4 not shown) and a base body base 600. The base body base 600 is used to be detachably connected to one end of the housing close to the base body base 600. The heating part is detachably connected to the base body base 600.

[0074] In some embodiments, the base of the substrate can also be integrally connected to one end of the housing close to the base of the substrate. The heating part is detachably connected to the base of the substrate.

[0075] In some embodiments, the housing is capable of absorbing some of the heat generated by the heating part.

[0076] In some embodiments, while heating the aerosol-forming substrate in a heat-radiation manner, the housing can first heat the air flow in the air flow channel (such as air), and then input the heated air flow into the interior of the aerosol-forming substrate through the outlet of the air flow channel, so as to continue heating the aerosol-forming substrate with the heated air flow. The air flow channel can be cylindrical, or it can be in other shapes. The specific setting of the above "air flow channel" can directly adopt the existing technology, so the specific structure of the above "air flow channel" will not be elaborated here.

[0077] Those skilled in the art can determine the type of the above aerosol-forming substrate according to actual needs. For example, the aerosol-forming substrate can include at least one aerosol-forming agent. An aerosol-forming agent is any suitable known compound or mixture of compounds that is convenient for forming a thick and stable aerosol during use and is substantially resistant to thermal degradation at a certain temperature. The aerosol-forming substrate can also be solid. Since the specific type of the aerosol-forming substrate is common knowledge in the art, the specific composition of the aerosol-forming substrate will not be elaborated here.

[0078] In some embodiments, the heating part includes a plurality of heating sub-parts 510, and the plurality of heating sub-parts 510 are integrally connected; wherein, the length and width of the heating sub-part 510 are both greater than the thickness of the heating sub-part 510.

[0079] In some embodiments, the heating part can be integrally formed according to a preset shape.

[0080] In some embodiments, the heating sub-part is flat, so that the length and width of the heating sub-part are both much greater than the thickness of the heating sub-part, thereby increasing the surface area of the heating part as much as possible, and finally achieving the purpose of increasing the heat exchange area of the air flow in the air flow channel. For example, when the heating part includes a plurality of heating sub-parts, the heating sub-part can be in the shape of a long and narrow rectangle; the length direction of the heating sub-part is the same as the axial direction of the air flow channel; the heating sub-part can also be in a wavy shape, thereby increasing the surface area of the heating part as much as possible. Those skilled in the art can determine the shape of the heating sub-part according to actual needs.

[0081] In some embodiments, the length direction of the heating sub - parts is the same as the axial direction of the air flow channel. That is to say, the heating part does not change the original flow direction and flow path of the air flow in the air flow channel. The heating part only increases the heat exchange area of the air flow in the air flow channel by increasing the area of the contact surface with the air flow (such as increasing the surface area of the heating part), thereby improving the heat exchange efficiency of the heating element assembly.

[0082] In some embodiments, when at least a part of the heating part is disposed in the air flow channel, each heating sub - part is integrally connected through the side of the heating sub - part away from the inner wall of the air flow channel to form the heating part.

[0083] In some embodiments, the overlapping area of several heating sub - parts is a straight line, wherein the direction of the straight line is the same as or substantially the same as the axial direction of the air flow channel, so as to avoid changing the original flow direction and flow path of the air flow in the air flow channel.

[0084] In some embodiments, the angles between adjacent heating sub - parts can be the same. For example, when each heating sub - part is integrally connected through the side of the heating sub - part away from the inner wall of the air flow channel to form the heating part, if the heating part is composed of four heating sub - parts, the cross - section of the heating part along the direction perpendicular to the axial direction of the air flow channel is cross - shaped.

[0085] In some embodiments, the angles between adjacent heating sub - parts can be different from each other.

[0086] In some embodiments, the thermal conductivity of the heating part is greater than a first preset threshold. The reason for setting the thermal conductivity of the heating part to be greater than the first preset threshold is to ensure that the thermal conductivity of the heating part is relatively high, so that the heat absorbed by the heating part from the substrate can be efficiently transferred to the above - mentioned air flow through the outer surface of the heating part, in order to achieve the purpose of enhancing the heat exchange efficiency of the air flow in the air flow channel. Those skilled in the art can determine this threshold according to actual needs.

[0087] In some embodiments, the material of the housing is an alloy or a metal; the material of the heating part is a soft magnetic material. Those skilled in the art can determine the materials of the heating part and the substrate according to actual needs.

[0088] 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 energized, and the heating part generates induced heat in the electromagnetic field to heat the air flow and the aerosol - generating matrix entering the air flow channel;

[0089] In some embodiments, the airflow in the airflow channel (such as air) can be heated by the above-mentioned heating part, and then the heated airflow is input into the interior of the aerosol-forming substrate through the outlet of the airflow channel, so as to heat the aerosol-forming substrate with the heated airflow.

[0090] In some embodiments, at least a part of the heating part is located inside the airflow channel. That is to say, a part of the heating part can be arranged outside the airflow channel.

[0091] In some embodiments, the heating part can be completely located inside the airflow channel.

[0092] In some embodiments, the number of air outlets of the airflow channel is multiple.

[0093] In some embodiments, the airflow includes air entering the airflow channel from the air inlet of the airflow channel.

[0094] In some embodiments, the airflow can also include other substances. Those skilled in the art can also determine the specific type of the above-mentioned airflow according to actual needs.

[0095] It can be seen that in some embodiments, in the present application, by arranging a heating part in the above-mentioned airflow channel, the heating part increases the heat exchange area of the airflow in the airflow channel by increasing the area of the contact surface with the airflow (such as increasing its surface area), thereby overcoming the defect that the heat exchange efficiency between the airflow entering the airflow channel and the heating element assembly in the existing heating element assembly is not high.

[0096] The above is the description of a heating element assembly. Some embodiments of the present application also disclose an aerosol generating device. Please refer to Figure 3 , the aerosol generating device includes: a housing 700 having a receiving cavity 710; the receiving cavity 710 is used to receive an aerosol-forming substrate ( Figure 3 not shown); a heating element assembly I, the heating element assembly I is the heating element assembly of any one of the embodiments in the present application; a power supply assembly II for supplying power to the heating element assembly I.

[0097] 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 also be determined according to the prior art, so it will not be elaborated here. Those skilled in the art can also add other existing components (such as an atomizer, etc.), products and / or structures to the aerosol generating device according to actual needs.

[0098] The above is a description of an aerosol generating device. In some embodiments of the present application, an aerosol generating system is also disclosed. The aerosol generating system includes: an aerosol generating device; the aerosol generating device is the aerosol generating device according to any one of the embodiments in the present application; an aerosol generating substrate, at least partially disposed in the accommodating cavity.

[0099] The above-mentioned aerosol generating substrate can adopt the existing technologies in the art, so it will not be elaborated here.

[0100] 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. They can also determine the positional relationship and connection relationship between the above-mentioned aerosol generating device and the aerosol generating substrate according to the existing technologies, so it will not be elaborated here. Those skilled in the art can also add other components (such as atomizers, etc.), products and / or structures to the aerosol generating system according to actual needs.

[0101] 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 of this document. For example, the various operation steps and the components used to perform the operation 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).

[0102] 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 embodied in a computer program product on a computer-readable storage medium that pre-loads 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 a 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.

[0103] 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 operational requirements can be used without departing from the principles and scope of this disclosure. The above modifications and other changes or corrections will be included within the scope of this disclosure.

[0104] 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 includes other elements not explicitly listed or that do not belong 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.

[0105] Those skilled in the art will recognize that many changes can be made to the details of the above embodiments without departing from the basic principles of the present utility model. Therefore, the scope of the present utility model should be determined only by the claims.

Claims

1. A heating element assembly, applied to an aerosol generating device, characterized in that Comprising: A substrate, within which there is an air flow channel, and an air outlet of the air flow channel is arranged on the substrate; wherein, the substrate is used to be inserted into an aerosol generating substrate placed within the aerosol generating device and heat the aerosol generating substrate; A heat exchange part, at least part of the heat exchange part is located within the air flow channel, the heat exchange part includes a plurality of heat exchange sub-parts, the plurality of heat exchange sub-parts are integrally connected, and the heat exchange sub-parts divide the air flow channel into a plurality of sub-air channels, and the heat exchange sub-parts are used to heat the air flowing through the sub-air channels.

2. The heating element assembly according to claim 1, wherein Air outlets are arranged at positions on the side wall of the substrate corresponding to the sub-air channels.

3. The heating element assembly according to claim 1, wherein, Both the length and width of the heat exchange sub-part are greater than the thickness of the heat exchange sub-part.

4. The heating element assembly according to claim 1, wherein, The length direction of the heat exchange sub-part is the same as the axial direction of the air flow channel.

5. The heating element assembly according to claim 1, wherein, The heat exchange sub-part extends spirally or in a wavy shape along the axial direction of the air flow channel.

6. The heating element assembly according to claim 1, wherein When at least part of the heat exchange part is arranged within the air flow channel, each heat exchange sub-part is integrally connected through the side away from the inner wall of the air flow channel of the heat exchange sub-part to form the heat exchange part.

7. The heating element assembly as described in claim 1, wherein The thermal conductivity of the heat exchange part is greater than a first preset threshold value.

8. The heating element assembly according to claim 1, wherein The materials of the substrate and the heat exchange part are metals, and a heating layer is arranged on the substrate and / or the heat exchange part; or, the materials of the substrate and the heat exchange part are soft magnetic materials; or, one of the substrate and the heat exchange part is made of soft magnetic material and the other is made of metal.

9. The heating element assembly according to claim 1, characterized in that, A turbulence part is arranged on the heat exchange sub-part, and the included angle between the turbulence part and the air flow direction within the sub-air channel is an obtuse angle.

10. An aerosol generating device, characterized in that, Comprising: A housing, having a receiving cavity; the receiving cavity is used to receive an aerosol generating substrate; A heating element assembly, the heating element assembly is the heating element assembly according to any one of claims 1-9; A power supply assembly, used to supply power to the heating element assembly.

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