Heating element 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 heating element assembly comprises a heating element which is used for being inserted into and contained in an aerosol generating substrate and heating the aerosol generating substrate; the heating body comprises a shell and a heating element; the heating element is divided into a top heating section and a remaining heating section; the rest heating section is close to the surface of the aerosol generating substrate, and the top heating section is far away from the surface of the aerosol generating substrate; the length of the top heating section in the unit area is greater than that of the rest heating sections in the unit area; or the length of the top heating section in the unit volume is greater than that of the rest heating sections in the unit volume; therefore, the temperature rise speed of the top heating section can be higher than that of the rest heating sections, aerosol can be quickly provided, and burnt smell caused by excessive heating is avoided. The heat-generating body assembly may be used in the aerosol-generating device.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol atomization, 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. Existing aerosol generating devices usually atomize the aerosol generating substrate through a heating element assembly or an independent heating element.

[0003] However, since the heating wire used in the existing heating element is uniformly arranged in the housing of the heating element in a uniformly wound manner. For example, the heating wire has a three-dimensional spiral structure in the housing. When the heating element is in the shape of a long and narrow rod or needle, etc., the heat dissipation speed at the top of the heating wire is faster than that in the middle. Therefore, after the heating wire is heated, there is usually a situation where the temperature at the top of the heating wire (such as the end of the heating wire far from the surface of the aerosol generating substrate when the heating wire has been inserted into the interior of the aerosol generating substrate) is lower than the temperature in the middle. As a result, it is difficult for the top of the heating wire to quickly heat the aerosol generating substrate. That is, after the heating wire is heated, the aerosol generating device cannot quickly provide the user with the aerosol generated from the aerosol generating substrate. In addition, since the heat dissipation speed at the top of the heating wire is faster than that in the middle, the temperature at the top of the heating wire is low while the temperature in the middle is high. As a result, the heating wire needs a higher heating temperature to generate aerosol, and a higher heating temperature is likely to cause the aerosol generating substrate to produce a burnt smell. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a heating element assembly, an aerosol generating device, and an aerosol generating system. The heating element assembly can quickly provide aerosol and avoid generating a burnt smell due to overheating. The heating element assembly can be used in the aerosol generating device and the aerosol generating system.

[0005] According to a first aspect, in one embodiment, a heating element assembly is provided. The heating element assembly is applied to an aerosol generating device. The heating element assembly includes: a heating element; the heating element is configured to be inserted into and disposed inside an aerosol generating substrate within the aerosol generating device, and heat the aerosol generating substrate; wherein, the heating element includes a housing and a heating element body; the heating element body is disposed within the housing, and the heating element body is divided into a top heating section and a remaining heating section; when the heating element is inserted into the interior of the aerosol generating substrate, the top heating section is inserted into the aerosol generating substrate earlier than the remaining heating section; wherein, the heating element body has a planar structure, and the length per unit area of the top heating section is greater than the length per unit area of the remaining heating section; or, the heating element body has a three-dimensional structure, and the length per unit volume of the top heating section is greater than the length per unit volume of the remaining heating section.

[0006] In one embodiment, an air flow channel is provided within the housing; the remaining heating section includes a middle sub-heating section and a bottom sub-heating section; the middle sub-heating section is located between the top heating section and the bottom sub-heating section; the heating element body has a planar structure, the length per unit area of the top heating section is greater than the length per unit area of the middle sub-heating section, and the length per unit area of the bottom sub-heating section is greater than the length per unit area of the middle sub-heating section; or, the heating element body has a three-dimensional structure, the length per unit volume of the top heating section is greater than the length per unit volume of the middle sub-heating section, and the length per unit volume of the bottom sub-heating section is greater than the length per unit volume of the middle sub-heating section.

[0007] In one embodiment, the heating element body is a spiral heating wire; wherein, the pitch of the top heating section is smaller than the pitch of the remaining heating section; wherein, the pitch is not less than the wire diameter of the spiral heating wire.

[0008] In one embodiment, the heating element body is a spiral heating wire; wherein, the pitch of the top heating section is smaller than the pitch of the middle sub-heating section; the pitch of the bottom sub-heating section is smaller than the pitch of the middle sub-heating section; wherein, the pitch is not less than the wire diameter of the spiral heating wire.

[0009] In one embodiment, the spiral heating wire is made of any one of iron-nickel alloy, stainless steel or titanium; the spiral heating wire is fixed to the inner surface of the housing by a ceramic paste.

[0010] In one embodiment, the ceramic paste is made of alumina or zirconia.

[0011] In one embodiment, the housing is made of metal or ceramic.

[0012] In one embodiment, the ratio of the pitch of the remaining heating segments to the pitch of the top heating segments is greater than 1, and the ratio is less than 10.

[0013] In one embodiment, the heating element is a heating coating.

[0014] According to the second aspect, an embodiment provides an aerosol generating device. The aerosol generating device comprises: a housing having a containing cavity; the containing cavity is used to contain an aerosol generating matrix; a heating element assembly, the heating element assembly being the heating element assembly of any one embodiment of the present application; and a power supply assembly, which is used to supply power to the heating element assembly.

[0015] According to the third aspect, an embodiment provides an aerosol generating system, characterized in that it includes: an aerosol generating device; the aerosol generating device is the aerosol generating device of any one embodiment in the present application; and an aerosol generating substrate, which is at least partially disposed in the accommodating cavity.

[0016] The beneficial effects of this application are:

[0017] The heating element assembly of the present application includes a heating element, which is used to be inserted into the interior of an aerosol generating substrate contained in the aerosol generating device and heat the aerosol generating substrate; the heating element includes a shell and a heating element; the heating element is arranged in the shell, and the heating element is divided into a top heating section and a remaining heating section; wherein, when the heating element is inserted into the interior of the aerosol generating substrate, the top heating section is inserted into the aerosol generating substrate before the remaining heating section; the heating element is a planar structure, and the length of the top heating section per unit area is greater than the length of the remaining heating section per unit area; or, the heating element is a three-dimensional structure, and the length of the top heating section per unit volume is greater than the length of the remaining heating section per unit volume; thereby, the heating speed of the top heating section can be greater than the heating speed of the remaining heating section, that is, After the above-mentioned heating element is heated, the top heating section of the heating element can rise to the required preset heating temperature faster than the remaining heating sections, so as to avoid the situation where the temperature of the top end of the heating element (such as the above-mentioned top heating section) is lower than the temperature of the middle part (such as the above-mentioned remaining heating section), and enable the top end of the heating element (such as the above-mentioned top heating section) to quickly heat the aerosol generating substrate, that is, after the heating element assembly or the heating element is heated, the heating element assembly or the heating element can quickly provide the user with the aerosol generated by the aerosol generating substrate; in addition, since the heating element of the present application does not have a situation where the temperature of its top end (such as the above-mentioned top heating section) is lower than the temperature of its middle part (such as the above-mentioned remaining heating section), the heating element does not need a higher heating temperature, and thus can avoid excessive heating of the aerosol generating substrate and the generation of burnt smell during the heating of the aerosol generating substrate as much as possible. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a cross-section of a heating element in a heating element assembly of an embodiment along its axial direction;

[0019] Figure 2 It is a schematic structural diagram of a heating element in a heating element of an embodiment;

[0020] Figure 3 It is a schematic structural diagram of an aerosol generating device of an embodiment. Detailed Description of the Embodiment

[0021] The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0022] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and the 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.

[0023] The serial numbers assigned to the components in this article, 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).

[0024] The technical solutions of the present application will be described in detail below in conjunction with the embodiments.

[0025] The present application provides a heating element assembly. The heating element assembly can be applied to an aerosol generating device.

[0026] The heating element assembly includes:

[0027] Heating element; the heating element is used to be inserted into the interior of an aerosol - generating substrate accommodated in an aerosol - generating device and heat the aerosol - generating substrate; wherein, the heating element includes a housing and a heating element body; the heating element body is disposed within the housing and is divided into a top heating section and a remaining heating section; when the heating element body has a planar structure, the length per unit area of the top heating section is greater than the length per unit area of the remaining heating section; or, when the heating element body has a three - dimensional structure, the length per unit volume of the top heating section is greater than the length per unit volume of the remaining heating section.

[0028] It should be noted that when the heating element is inserted into the interior of the aerosol - generating substrate, the top heating section is inserted into the aerosol - generating substrate earlier than the remaining heating section.

[0029] In some embodiments, the length of the above - mentioned heating element is greater than its width or diameter. For example, the above - mentioned heating element can be in the shape of a long and narrow rod or needle. The above - mentioned heating element can also be in other shapes.

[0030] In some embodiments, the above - mentioned heating element can directly heat the aerosol - generating substrate in a heat - radiation manner.

[0031] In some embodiments, there is no air flow channel inside the above - mentioned heating element. That is to say, the interior of the above - mentioned heating element can be solid.

[0032] In some embodiments, there can be an air flow channel inside the above - mentioned heating element. While the heating element heats the aerosol - generating substrate in a heat - radiation manner, it first heats the air in the air flow channel and then inputs the heated air through the outlet of the air flow channel into the interior of the aerosol - generating substrate to continue heating the aerosol - generating substrate with the heated air. Among them, the air flow channel can be cylindrical, and the air flow channel can also 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 conducive to forming 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 further.

[0035] In some embodiments, the heating element may have a planar structure. For example, the heating element may be a heating wire that unfolds on a plane. The heating wire may be in an S shape. The heating wire may also be in other shapes, such as a helix on a two-dimensional plane.

[0036] In some embodiments, the heating element may also be a heating coating that unfolds on a plane. The heating coating may be in an S shape. The heating coating may be in other shapes, such as a helix on a two-dimensional plane.

[0037] In some embodiments, the heating element may have a three-dimensional structure. For example, the heating element may be a heating wire that unfolds in three-dimensional space. The heating wire may be in an S shape. The heating wire may also be in other shapes, such as a helix in three-dimensional space, that is, the above-mentioned heating wire may be a helical heating wire.

[0038] In some embodiments, the heating element may also be a heating coating that unfolds in three-dimensional space. The heating coating may be in an S shape. The heating coating may be in other shapes, such as a helix in three-dimensional space.

[0039] Those skilled in the art can determine the specific shape of the heating element according to actual needs.

[0040] In some embodiments, the above-mentioned unit volume or unit area can be determined by oneself. For example, the unit volume can be per cubic centimeter, etc.; the unit area can be per square centimeter, etc.

[0041] In some embodiments, the heating element may be a helical heating wire.

[0042] In some embodiments, the heating element may be a heating coating. Those skilled in the art can determine the type of the heating element according to actual needs by themselves.

[0043] It can be seen that in some embodiments, when the heating element (such as a heating wire or a heating coating) is a planar structure, the present application sets the length of the top heating segment per unit area to be greater than the length of the remaining heating segments per unit area, thereby making the heating rate of the top heating segment greater than the heating rate of the remaining heating segments; or, when the heating element (such as a heating wire or a heating coating) is a three-dimensional structure, the present application sets the length of the top heating segment per unit volume to be greater than the length of the remaining heating segments per unit volume, thereby making the heating rate of the top heating segment greater than the heating rate of the remaining heating segments. That is to say, after the above-mentioned heating element is heated, the top heating section of the heating element can rise to the required preset heating temperature faster than the remaining heating sections, so as to avoid the situation where the temperature of the top end of the heating element (such as the above-mentioned top heating section) is lower than the temperature of the middle part (such as the above-mentioned remaining heating section), and enable the top end of the heating element (such as the above-mentioned top heating section) to quickly heat the aerosol generating substrate, that is, after the heating element assembly or the heating element is heated, the heating element assembly or the heating element can quickly provide the user with the aerosol generated by the aerosol generating substrate; in addition, since the heating element of the present application does not have a situation where the temperature of its top end (such as the above-mentioned top heating section) is lower than the temperature of its middle part (such as the above-mentioned remaining heating section), the heating element does not need a higher heating temperature, and thus can avoid as much as possible the excessive heating of the aerosol generating substrate in the process of heating the aerosol generating substrate to produce a burnt smell.

[0044] In some embodiments, the top heating section and the remaining heating section are connected as one piece, that is, the top heating section and the remaining heating section can be made of the same material and in one piece by the same process.

[0045] In some embodiments, there may be no actual dividing line between the top heating section and the remaining heating section of the heating element. The present application divides the heating part into the top heating section and the remaining heating section only for the convenience of explaining the technical solution of the present application.

[0046] In some embodiments, the top heating section and the remaining heating sections may also be detachably connected.

[0047] In some embodiments, the heating element is a spiral heating wire; wherein the pitch of the top heating segment of the spiral heating wire is smaller than the pitch of the remaining heating segments; the pitch of the bottom sub-heating segment is smaller than the pitch of the remaining heating segments; wherein the pitch is not smaller than the wire diameter of the spiral heating wire. The pitch refers to the distance between two adjacent line segments in the same direction (such as a part of the top heating segment or a part of the remaining heating segment, etc.). Similarly, when the heating element is a heating coating, it can also be set according to the above-mentioned setting method of different pitches, which will not be repeated here.

[0048] In some embodiments, the housing is made of metal or ceramic.

[0049] Since existing heating element assemblies or heating elements are generally in the shape of long and narrow rods or needles, and need to be inserted into the interior of the aerosol-forming substrate to heat the aerosol-forming substrate, and the heating element assembly or heating element has an air flow channel; while heating the aerosol-forming substrate in a heat radiation manner, the air (such as air) in the air flow channel is heated, and then the heated air is input into the interior of the aerosol-forming substrate through the outlet of the air flow channel to continue heating the aerosol-forming substrate through the heated air; and the bottom end of the heating element assembly or heating element has a faster heat dissipation rate than the middle part thereof. Therefore, after the heating element assembly or heating element is heated, there is usually a situation where the temperature of the bottom end of the heating element assembly or heating element (such as the end of the heating element assembly or heating element close to the surface of the aerosol-forming substrate when the heating element assembly or heating element has been inserted into the interior of the aerosol-forming substrate) is lower than the temperature of the middle part thereof, which in turn causes the bottom end of the heating element assembly or heating element to be unable to quickly heat the air (such as air) in the air flow channel to the required temperature and thus unable to quickly generate aerosol, and the effect of continuing to heat the aerosol-forming substrate through the heated air is also poor; in addition, since the top end of the heating element assembly or heating element has a faster heat dissipation rate than the middle part thereof, the temperature of the top end of the heating element assembly or heating element is low while the temperature of the middle part is high, which in turn makes the heating element assembly or heating element require a higher heating temperature to generate aerosol, and a higher heating temperature is likely to cause the aerosol-forming substrate to produce a burnt smell. Therefore, in some embodiments, the shell has an air flow channel; the remaining heating section includes a middle sub-heating section and a bottom sub-heating section; the middle sub-heating section is located between the top heating section and the bottom sub-heating section; wherein, when the heating element is in a planar structure, the length of the top heating section per unit area is greater than the length of the middle sub-heating section per unit area, and the length of the bottom sub-heating section per unit area is greater than the length of the middle sub-heating section per unit area; or, when the heating element is in a three-dimensional structure, the length of the top heating section per unit volume is greater than the length of the middle sub-heating section per unit volume, and the length of the bottom sub-heating section per unit volume is greater than the length of the middle sub-heating section per unit volume.

[0050] It should be noted that when the heating element is inserted into the interior of the aerosol-forming substrate, the bottom sub-heating section is inserted into the aerosol-forming substrate later than the middle sub-heating section.

[0051] In one embodiment, please refer to Figure 1 , the above-mentioned heating element assembly includes: a heating element 21; and the heating element 21 includes a housing 211 and a heating element 212; wherein, Figure 1 the heating element 212 in

[0052] In some embodiments, please refer toFigure 2 , Figure 2 The heating element 212 in Figure 2 is a spiral heating wire; the heating element 212 is divided into a top heating section 2121 and a remaining heating section 2122, and the remaining heating section 2122 includes a middle sub-heating section 2122a and a bottom sub-heating section 2122b. The top heating section 2121, the middle sub-heating section 2122a, and the bottom sub-heating section 2122b are integrally connected. That is to say, the top heating section 2121, the middle sub-heating section 2122a, and the bottom sub-heating section 2122b can be integrally formed from the same material and process.

[0053] In some embodiments, there is no actual demarcation line between the top heating section 2121, the middle sub-heating section 2122a, and the bottom sub-heating section 2122b of the above-mentioned heating body. In this application, the heating part is divided into the top heating section 2121, the middle sub-heating section 2122a, and the bottom sub-heating section 2122b only for the convenience of explaining the technical solution of this application.

[0054] In some embodiments, the top heating section 2121, the middle sub-heating section 2122a, and the bottom sub-heating section 2122b can also be detachably connected.

[0055] In one embodiment, the above-mentioned heating element can be a spiral heating wire. The pitch of the top heating section 2121 of the spiral heating wire is smaller than the pitch of the remaining heating section 2122. The pitch is not less than the wire diameter of the spiral heating wire. With such a setting, the number of spiral heating wires in the top heating section 2121 can be greater than the number of spiral heating wires in the remaining heating section 2122, and thus the heating rate of the top heating section 2121 can be greater than the heating rate of the remaining heating section 2122.

[0056] In some embodiments, please refer to Figure 2 , the heating element has a three-dimensional structure, that is, a three-dimensional spiral structure; the heating element is a spiral heating wire; wherein, the pitch of the top heating section 2121 of the spiral heating wire is smaller than the pitch of the middle sub-heating section 2122a; the pitch of the bottom sub-heating section 2122b of the spiral heating wire is smaller than the pitch of the middle sub-heating section 2122a; wherein, the pitch is not less than the wire diameter of the spiral heating wire. With such a setting, the number of spiral heating wires in the top heating section 2121 can be greater than the number of spiral heating wires in the middle sub-heating section 2122a, and the number of spiral heating wires in the bottom sub-heating section 2122b can be greater than the number of spiral heating wires in the middle sub-heating section 2122a, and thus the heating rates of the top heating section 2121 and the bottom sub-heating section 2122b can both be greater than the heating rate of the middle sub-heating section 2122a.

[0057] It should be noted that the above pitch refers to the distance between two adjacent line segments in the same direction in the heating element (such as a part of the top heating section or a part of the middle sub-heating section, etc.). Similarly, when the heating element is a heating coating, it can also be set according to the above different pitch setting methods, which will not be elaborated here.

[0058] In some embodiments, the spiral heating wire is made of any one of iron-nickel alloy, stainless steel or titanium; the spiral heating wire is fixed to the inner surface of the housing through ceramic slurry.

[0059] It should be noted that those skilled in the art can determine the material of the above spiral heating wire according to actual needs, and no specific limitation is made here.

[0060] In some embodiments, the ceramic slurry is made of alumina or zirconia.

[0061] It should be noted that those skilled in the art can determine the material of the above ceramic slurry according to actual needs, and no specific limitation is made here.

[0062] In some embodiments, the ratio of the pitch of the remaining heating section to the pitch of the top heating section is greater than 1 and less than 10.

[0063] It should be noted that those skilled in the art can determine the specific size of the above ratio according to actual needs, and no specific limitation is made here.

[0064] It can be seen that in some embodiments, when the heating element (such as a spiral heating wire or a heating coating) has a planar structure, the present application sets the lengths of the top heating section and the bottom sub-heating section per unit area to be greater than the length of the middle sub-heating section per unit area, so that the heating rates of the top heating section and the bottom sub-heating section can be greater than the heating rate of the middle sub-heating section; or, when the heating element (such as a spiral heating wire or a heating coating) has a three-dimensional structure, the present application sets the lengths of the top heating section and the bottom sub-heating section per unit volume to be greater than the length of the middle sub-heating section per unit volume, so that the heating rates of the top heating section and the bottom sub-heating section can be greater than the heating rate of the middle sub-heating section. That is to say, after the above-mentioned heating element is heated, the top heating section and the bottom sub-heating section of the heating element can rise to the required preset heating temperature faster than the middle sub-heating section, so as to avoid the situation that the temperature of the top end (such as the above-mentioned top heating section) and the bottom end (such as the above-mentioned bottom sub-heating section) of the heating body is lower than the temperature of its middle part (such as the above-mentioned middle sub-heating section), so that the top end (such as the above-mentioned top heating section) of the heating body can quickly heat the aerosol-forming substrate, and the bottom end (such as the above-mentioned bottom sub-heating section) of the heating body can quickly heat the air (such as air) in the air flow channel to the required temperature, resulting in a better effect of continuously heating the aerosol-forming substrate by the heated air.

[0065] The above is the description of a heating body assembly. Some embodiments of the present application also disclose an aerosol generating device. Please refer to Figure 3 , the aerosol generating device includes:

[0066] A housing 1 having a receiving cavity 11; the receiving cavity 11 is used to receive an aerosol-forming substrate 12;

[0067] A heating body assembly 2, and the heating body assembly 2 is the heating body assembly of any one of the embodiments in the present application;

[0068] A power supply assembly (not shown in the figure) for supplying power to the heating body assembly.

[0069] The above-mentioned housing and power supply assembly can both adopt the existing technologies in the art, so they will not be described in detail here.

[0070] In some embodiments, the aerosol generating device further includes a base and an electromagnetic coil. The electromagnetic coil is arranged around the heating body. The electromagnetic coil generates an electromagnetic field under the energized condition, and the heating body generates induced heat in the electromagnetic field to heat the aerosol-forming substrate. The heating body is installed on the base.

[0071] 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 it 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.

[0072] 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:

[0073] 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.

[0074] The above-mentioned aerosol generating substrate can adopt the prior art in the art, so it will not be elaborated here.

[0075] 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 it 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.

[0076] 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, 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).

[0077] 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, which is preloaded 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.

[0078] Although the principles herein have been shown in various embodiments, many modifications of 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 corrections will be included within the scope of this disclosure.

[0079] The foregoing detailed description has been presented 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, 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 explicitly 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.

[0080] 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 is used to be inserted into the interior of the aerosol generating substrate contained in the aerosol generating device and heat the aerosol generating substrate; Wherein, the heating body comprises a shell and a heating element; the heating element is arranged in the shell, and the heating element is divided into a top heating section and a remaining heating section; When the heating element is inserted into the interior of the aerosol generating substrate, the top heating section is inserted into the aerosol generating substrate before the remaining heating sections; in, The heating element is in a planar structure, and the length of the top heating section per unit area is greater than the length of the remaining heating section per unit area; Alternatively, the heating element has a three-dimensional structure, and the length of the top heating section within a unit volume is greater than the length of the remaining heating sections within a unit volume.

2. The heating element assembly according to claim 1, characterized in that: The housing has an air flow channel therein; The remaining heating section includes a middle heating sub-section and a bottom heating sub-section; The middle sub-heating segment is located between the top heating segment and the bottom heating segment; The heating element is in a planar structure, the length of the top heating segment per unit area is greater than the length of the middle sub-heating segment per unit area, and the length of the bottom sub-heating segment per unit area is greater than the length of the middle sub-heating segment per unit area; Alternatively, the heating element has a three-dimensional structure, the length of the top heating segment within a unit volume is greater than the length of the middle sub-heating segment within a unit volume, and the length of the bottom sub-heating segment within a unit volume is greater than the length of the middle sub-heating segment within a unit volume.

3. The heating element assembly according to claim 1, characterized in that: The heating element is a spiral heating wire; wherein the pitch of the top heating section is smaller than the pitch of the remaining heating sections; wherein the pitch is not smaller than the wire diameter of the spiral heating wire.

4. The heating element assembly according to claim 2, characterized in that: The heating element is a spiral heating wire; wherein the pitch of the top heating segment is smaller than the pitch of the middle sub-heating segment; the pitch of the bottom sub-heating segment is smaller than the pitch of the middle sub-heating segment; wherein the pitch is not smaller than the wire diameter of the spiral heating wire.

5. The heating element assembly according to claim 3 or 4, characterized in that: The spiral heating wire is made of any one of iron-nickel alloy, stainless steel or titanium; the spiral heating wire is fixed in the shell by ceramic slurry.

6. The heating element assembly according to claim 5, characterized in that: The ceramic slurry is made of alumina or zirconia.

7. The heating element assembly according to claim 1, characterized in that: The housing is made of metal or ceramic.

8. The heating element assembly according to any one of claims 3 to 7, characterized in that: The ratio of the pitch of the remaining heating segments to the pitch of the top heating segments is greater than 1, and the ratio is less than 10.

9. The heating element assembly according to claim 1 or 2, characterized in that: The heating element is a heating coating.

10. 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 9; A power supply component is used to supply power to the heating element component.

Images