JP7789892B2 - Heating assembly and aerosol generating device - Google Patents

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority from Chinese patent application No. 2021108393386, filed on July 23, 2021, the entire contents of which are incorporated herein by reference.

This application relates to the technical field of electronic atomization devices, and more particularly to heating assemblies and aerosol generating devices.

Heated, non-combustion aerosol generators are attracting increasing attention due to their advantages of being safe, convenient, healthy, and environmentally friendly.

Conventional heated non-combustion aerosol generators typically include a heating assembly that heats and atomizes an aerosol-generating matrix when current is applied through the heating assembly. Specifically, a first electrode and a second electrode are mounted on the heating assembly. Here, the first electrode is connected to a positive lead, and the second electrode is connected to a negative lead, which are further connected to a power source via the positive and negative leads, thereby allowing the power source to power the heating assembly.

However, when using conventional heating assemblies, the wiring paths for the positive and/or negative leads are complex, resulting in high manufacturing costs and difficulty.

The present invention provides a heating assembly and an aerosol generating device that solves the problems of conventional heating assemblies, such as complex wiring paths for the positive and/or negative leads, high manufacturing costs, and high manufacturing difficulty.

To solve the above technical problems, the present application provides a first technical solution as follows: The present application provides a heating assembly, which includes a heating element, a conductive first electrode, and a conductive second electrode. The heating element contains an aerosol-generating matrix and is used to heat the aerosol-generating matrix when energized. The first electrode is located on the outer surface of the heating element, and has a first connecting portion. The second electrode and the first electrode are located on the outer surface of the heating element with a gap between them, and the second electrode has a second connecting portion, where the first connecting portion and the second connecting portion are located at the same end of the heating element.

Here, the heating element has opposing first and second ends, and the first and second connection portions are located at the first end of the heating element. The first electrode further includes at least one first extension portion connected to the first connection portion, the first extension portion extending from the first connection portion toward the second end of the heating element. The second electrode further includes at least one second extension portion connected to the second connection portion, the second extension portion extending from the second connection portion toward the second end of the heating element, and a heating region is formed between adjacent first and second extension portions.

Here, the first extension portion and/or the second extension portion extend along the axial direction of the heating element and are linear.

Here, one first extension section and one second extension section are installed at a distance from each other, or multiple first extension sections and multiple second extension sections are installed alternately at a distance from each other, thereby dividing the heating element and forming an even number of heating regions.

Here, the spacing between any adjacent first extension portion and second extension portion is the same.

Here, the second electrode further includes a third connection portion, which is installed at the second end of the heating element and connected to at least one second extension portion.

Here, the number of first extension portions and second extension portions is both 1, and the first extension portion extends from the first connection portion to the second end, and the second extension portion extends from the second connection portion to the second end, thereby forming two heat-generating regions.

Here, the number of first extension portions and the number of second extension portions are both two, and the two first extension portions are installed at both ends of the first connection portion, thereby forming four heating regions.

Here, the second electrode further includes a third connection portion, and one of the two second extension portions is connected to the second connection portion. The third connection portion is connected to the two second extension portions.

Here, the first extension portion and the second extension portion extend along the circumferential direction of the heating element and have a spiral shape.

Here, the heat generating region is located between one first extension section and one second extension section, forming a spiral heat generating region.

Here, the extension direction of the first extension section and the extension direction of the second extension section coincide.

Here, the first connection portion and the second connection portion are installed at intervals on the heat generating layer of the heat generating element.

Here, the first connection portion, second connection portion, and third connection portion are each installed at intervals on the heat generating layer of the heat generating element.

Here, the heating element has a hollow tubular shape.

The heating element includes a substrate and a heating layer. The substrate has a receiving cavity, which is used to receive the aerosol-generating matrix. The heating layers are attached to the outer surface of the substrate and are connected to a first electrode and a second electrode, respectively, and are used to generate heat when electricity is applied to heat the aerosol-generating matrix.

Here, the substrate is a hollow cylinder and its material is quartz or glass.

Here, the heat-generating layer is an infrared heat-generating film.

Here, the heating element further includes at least one restricting member, which is provided on the base and is used to position the aerosol-generating matrix so that there is a gap between the outer surface of the aerosol-generating matrix and the inner surface of the containing cavity.

Here, the first connection portion extends along the axial direction of the heating element and has a notch.

Here, the second connection portion is located at the notch and coincides with the height of the first connection portion in the axial direction of the heating element.

To solve the above technical problems, the present application provides another technical solution as follows: The present application provides an aerosol generating device, which includes a heating assembly and a power supply assembly. The heating assembly is used to heat the aerosol-generating matrix after being energized, and the heating assembly is any of the heating assemblies described above. The power supply assembly is electrically connected to the first and second connection portions of the heating assembly and is used to supply power to the heating assembly.

In the heating assembly and aerosol generating device provided by this application, the heating assembly has a first connection part for connecting to the positive lead and a second connection part for connecting to the negative lead, which are located at the same end of the outer surface of the heating element. This allows the positive lead and negative lead to be connected to the same end of the heating element, eliminating the need to wire the positive lead or negative lead to the other end to connect to the corresponding electrode. This significantly simplifies the wiring path for the conductors compared to solutions that require wiring the positive lead and negative lead at both ends, thereby reducing the length of the conductors and effectively reducing manufacturing costs and difficulty.

In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings from these drawings without any creative efforts.
1 is a schematic diagram of the overall structure of a heating assembly provided by one embodiment of the present application; 2 is a structural schematic diagram of an outer wall of the heating assembly shown in FIG. 1 , extending along its axial direction, provided by an embodiment of the present application; 1 is a schematic diagram of the overall structure of a heating assembly provided by one embodiment of the present application; FIG. 10 is a structural schematic diagram of an outer wall of a heating assembly provided by another embodiment of the present application, the outer wall extending along its axial direction. FIG. 10 is a structural schematic diagram of an outer wall of a heating assembly provided by another embodiment of the present application, the outer wall extending along its axial direction. 1 is a schematic diagram of the overall structure of a heating assembly provided by one embodiment of the present application; 7 is a structural schematic diagram of an outer wall of the heating assembly shown in FIG. 6 provided by an embodiment of the present application, extending along its axial direction. FIG. FIG. 2 is a schematic diagram of the overall structure of a heating assembly provided by another embodiment of the present application. 9 is a structural schematic diagram of an outer wall of the heating assembly shown in FIG. 8 extending along its axial direction provided by an embodiment of the present application. FIG. 1 is a structural schematic diagram of an aerosol generating device provided by the present application.

The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It will be apparent that the described embodiments are only a part of the embodiments of the present application, and are not all of them. All other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without any inventive efforts fall within the scope of protection of the present application.

In the following description, specific details such as particular system structures, interfaces, techniques, etc. are provided for purposes of explanation and not limitation, to provide a thorough understanding of the present application.

The terms "first," "second," "third," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance or the number of technical features described. Accordingly, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless otherwise clearly and specifically defined. All directional indications (e.g., up, down, left, right, front, rear, etc.) in the embodiments of this application are used to interpret the relative positional relationships, movement situations, etc. between components in a specific position (e.g., as shown in the drawings); if the specific position changes, the directionality changes accordingly. Furthermore, the terms "include," "have," and any variations thereof in the embodiments of this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include additional steps or units that are not listed, or may optionally include additional steps or units that are specific to the process, method, product, or apparatus.

As used herein, the term "embodiment" means that a particular feature, structure, or characteristic described with reference to the embodiment may be included in at least one embodiment of the present application. Appearances of such a combination in various places in the specification do not necessarily refer to the same embodiment, nor are they mutually exclusive, separate, or alternative embodiments. As will be understood by those skilled in the art, both explicitly and implicitly, the embodiments described herein can be combined with other embodiments.

The present application will now be described in detail with reference to drawings and embodiments.

Referring to Figures 1 and 2, Figure 1 provides a structural schematic diagram of the heating assembly 100 of this embodiment, and Figure 2 is an exploded schematic diagram of the heating assembly 100 of Figure 1. In this embodiment, a heating assembly 100 is provided, which specifically houses an aerosol-generating matrix and is used to heat the aerosol-generating matrix when current is applied. Here, the aerosol-generating matrix may specifically be a plant leaf substrate or a paste-like substrate. The aerosol-generating matrix can be wrapped inside aluminum foil or paper and used together.

Specifically, the heating assembly 100 includes a heating element 110, a first electrode 120, and a second electrode 130.

Here, the heating element 110 is used to house the aerosol-generating matrix, and the heating element 110 contains a heat-generating material. The heating element 110 supports the aerosol-generating matrix housed therein and generates heat when energized, thereby heating the aerosol-generating matrix housed therein and thereby forming an aerosol for consumption by the user.

The first electrode 120 is adapted to be connected to the positive lead, and the second electrode 130 is adapted to be connected to the negative lead, allowing the heating assembly to receive power supplied from an external power source, thereby energizing the heating element 110 and causing it to generate heat. The heating element 110 has an outer surface 110a and an inner surface 110b, and the conductive first electrode 120 and the conductive second electrode 130 are spaced apart from each other on the outer surface 110a of the heating element 110 and are electrically connected via a conductive heating layer.

The first electrode 120 has a first connection portion 121, which is used to connect to a positive electrode lead. The second electrode 130 has a second connection portion 131, which is used to connect to a negative electrode lead. Here, the first connection portion 121 and the second connection portion 131 are installed at a distance from each other at the same end of the heating element 110. Here, the same end of the heating element 110 refers to the first end or the second end of the heating element 110. Specifically, if a plane perpendicular to the axial direction of the heating element 110 and passing through the center point of the axial direction of the heating element 110 is taken as the limit, the portion of the heating element 110 located on one side of the plane is the first end 110c of the heating element 110, and the portion of the heating element 110 located on the other side of the plane is the second end 110d of the heating element 110. Specifically, in this embodiment, the heating element 110 has a hollow columnar shape and has opposing first and second ends 110c and 110d, with the first and second connection portions 121 and 131 spaced apart from each other at the first end 110c of the heating element 110. This allows both the positive and negative electrode leads to be connected to the first and second connection portions 121 and 131, respectively, at the same end of the heating element 110. In other embodiments, the first connection portion 121 may be connected to the negative electrode lead, and the second connection portion 131 may be connected to the positive electrode lead.

The first electrode 120 and the second electrode 130 may be a conductive coating applied to the outer surface 110a of the heating element 110, and the conductive coating may be a metal coating, conductive silver paste, conductive tape, or the like. The first electrode 120 and the second electrode 130 may be a metal conductive sheet provided on the outer surface 110a of the heating element 110, or a metal deposited on the outer surface 110a of the heating element 110, such as a gold film, an aluminum film, or a copper film.

The heating assembly 100 provided by this embodiment has the first connection part 121 for connecting to the positive lead and the second connection part 131 for connecting to the negative lead located at the same end of the outer surface 110a of the heating element 110, allowing the positive lead and the negative lead to be connected at the same end of the heating element 110, eliminating the need to wire the positive lead or the negative lead to the other end to connect to the corresponding electrode. Compared to a solution in which the first connection part 121 and the second connection part 131 are located at opposite ends of the heating element 110 and the positive lead and the negative lead must be connected at both ends, this not only significantly simplifies the wiring path for the conductors, but also reduces the length of the conductors and effectively reduces manufacturing costs and difficulty.

The heating element 110 may be made entirely of a conductive material (e.g., conductive ceramics). The heating element 110 may include an insulating substrate and a conductive heating layer disposed on the surface of the insulating substrate. In this embodiment, the heating element 110 includes a substrate 111 and a heating layer 112. The substrate 111 is made of an insulating material, which may be a high-temperature insulating material such as quartz glass, ceramic, or mica, thereby preventing the first electrode 120 and the second electrode 130 from shorting out. If the substrate is quartz glass, a quartz glass with a transparency of 80% or more may be selected. The substrate 111 has a receiving cavity 1111 for receiving an aerosol-generating matrix. One end of the receiving cavity has an opening, allowing the aerosol-generating matrix to be inserted into or removed from the receiving cavity 1111 through the opening. The base 111 may have a hollow tubular shape. In this embodiment, the base 111 is a hollow cylinder, the containing cavity 1111 has a cylindrical shape, and the sidewall of the base 111 has a fixed wall thickness, allowing the heating element 110 to uniformly heat the aerosol-generating matrix. The first connecting portion 121 and the second connecting portion 131 both extend circumferentially around the base 111 and have an arc shape. Preferably, the first connecting portion 121 and the second connecting portion 131 have the same length and are located at the same height along the axial direction of the base 111.

In one embodiment, as shown in FIG. 3, a restricting member 113 can be further installed at the end of the base 111 and used to position the aerosol-generating matrix, so that when the aerosol-generating matrix is inserted into the accommodating cavity 1111 through the opening, an air gap can be formed between the aerosol-generating matrix and the inner wall of the accommodating cavity 1111. The air gap can serve as a thermal insulating layer, preventing the side wall of the base 111 from absorbing heat from the aerosol-generating matrix.

Specifically, the restricting member has a restricting hole 1131 that communicates with the opening of the storage cavity 1111, and the diameter of the restricting hole 1131 is smaller than the inner diameter of the cylindrical storage cavity 1111. The center of the restricting hole 1131 may be located on the axis of the storage cavity 1111, thereby limiting the aerosol-generating matrix to the central position of the heating element 110.

The number of restricting members 113 may be one; for example, in the embodiment of FIG. 3, the restricting member is a single annular flange on the inner surface of the accommodating cavity 1111 near the end. The number of restricting members 113 may be multiple, with the multiple restricting members 113 being mounted on the base 111 at equal intervals along the circumferential direction of the accommodating cavity 1111, thereby allowing the restricting members 113 to effectively position the aerosol-generating matrix in multiple radial directions. Furthermore, the multiple restricting members 113 have the same height in the axial direction of the accommodating cavity 1111, and the restricting holes 1131 are formed at the same axial height of the accommodating cavity 1111.

The shape of the restricting member 113 may be annular, arc-shaped, dot-shaped, block-shaped, strip-shaped, etc. For example, two arc-shaped restricting members 113 may be installed at equal intervals on the inner surface 110b of the accommodating cavity 1111, or three block-shaped restricting members 113 may be installed at equal intervals on the end surface of the first end 110c of the base 111, and restricting holes 1131 may be formed in the first end 110c of the base 111.

The heating layer 112 generates heat when energized, thereby heating the aerosol-generating matrix. The heating layer 112 is disposed around the outer surface 110a of the substrate 111 and is connected to the first electrode 120 and the second electrode 130, respectively. After the first electrode 120 and the second electrode 130 are energized, a current flows through the heating layer 112 between the first electrode 120 and the second electrode 130, generating additional heat. The heating layer 112 may be a metal layer, a conductive ceramic layer, or a conductive carbon layer. The heating layer 112 may be in the form of a continuous film, a porous mesh, or strips. In this embodiment, the heating layer 112 is an infrared heating film that emits infrared rays when energized, thereby heating the aerosol-generating matrix in the containing cavity 1111. Of these, the infrared heating wavelength is 2.5 μm to 20 μm, and due to the characteristics of the heated aerosol-generating matrix, the heating temperature usually needs to be 350°C or higher, with the extreme value of energy radiation mainly in the 3 μm to 5 μm range.

In other embodiments, the first electrode 120, the second electrode 130, and the heating layer 112 may be disposed on the inner surface 110b of the heating element 110 and are not limited to being disposed only on the outer surface 110a of the heating element 110.

In one embodiment, as shown in FIG. 4, the first connection portion 121 is annular, extends circumferentially around the heating element 110, and has a notch 1211, i.e., the first connection portion 121 does not form a closed ring in the circumferential direction. The second connection portion 131 is located near the first connection portion 121, far away from the end face of the first end portion 110c, and the negative electrode lead can be connected to the second connection portion 131 via the notch 1211. Because the first connection portion 121 forms the notch 1211, the negative electrode lead can be connected to the second connection portion 131 without contacting the first connection portion 121, preventing a short circuit caused by the negative electrode lead contacting the first connection portion 121 and thereby facilitating wiring.

Figure 4 shows three vertical positional relationships between the first connection portion 121 and the second connection portion 131. When the second electrode 130 is in position a, the second connection portion 131 is completely misaligned with the notch 1211 along the axial direction of the heating element 110. When the second electrode 130 is in position b, the second connection portion 131 and the notch 1211 are positioned so as to face each other directly in the axial direction of the heating element 110. When the second electrode 130 is in position c, the second connection portion 131 is misaligned with the notch 1211 along the axial direction of the heating element 110. When the second electrode 130 is located in position b, the conductor wire is easily connected to the second connection portion 131 via the notch 1211, simplifying the wiring path for the conductor wire.

In this embodiment, as shown in FIG. 2 , the first connecting portion 121 and the second connecting portion 131 may both be considered to be annular structures with notches. Here, the first connecting portion 121 is disposed in the notch of the second connecting portion 131, or the second connecting portion 131 is disposed in the notch of the first connecting portion 121. For example, all of the second connecting portions 131 are exposed by the notches 1211 along the axial direction of the heating element 110, and the second connecting portions 131 are located at the positions of the notches 1211 and coincide with the height of the first connecting portions 121 in the axial direction of the heating element 110. Furthermore, the first connecting portions 121 and the second connecting portions 131 are flush with the end surface of the first end 110c of the heating element 110. This allows the positive and negative leads to be directly connected to the first connecting portions 121 and the second connecting portions 131, simplifying the wiring path of the conductors and simplifying the wiring method of the heating assembly 100.

In this embodiment, the first electrode 120 further includes at least one first extension 122, one end of which is connected to the first connection 121 and the other end of which extends from the first connection 121 toward the second end 110d of the heating element 110. The second electrode 130 further includes at least one second extension 132, one end of which is connected to the second connection 131 and the other end of which extends from the second connection 131 toward the second end 110d of the heating element 110. The first extension 122 and the second extension 132 may extend to a position close to the second end 110d or to the end face of the second end 110d. Here, the first extension 122 and the second extension 132 are used to form or define at least one heating region in the heating layer 112. The first extension 122 and the second extension 132 are spaced apart, and the heating layer 112 between adjacent first extensions 122 and second extensions 132 forms a single heating region. After the first electrode 120 and the second electrode 130 are energized, current flows through the heating region between the first extension 122 and the second extension 132, heating the heating region and heating the aerosol-generating matrix. The first connection portion 121 and the first extension 122 may be made of the same material and formed in a single process by printing or deposition. The second connection portion 131 and the second extension 132 may be made of the same material and formed in a single process by printing or deposition. In this application, the difference between the connection portion and the extension portion is that the dimensions of the connection portion may be larger than the dimensions of the extension portion to facilitate welding or adhesive fixation to external connection leads.

Here, the extension paths of the first extension portion 122 and the second extension portion 132 may be linear, bent, curved, or irregular. The extension direction of the first extension portion 122 and the second extension portion 132 may be along the axial direction, at any angle relative to the axial direction, or spirally along the circumferential direction.

In one embodiment, the first extension 122 and the second extension 132 are parallel, extend along the axial direction of the heating element 110, and are linear, thereby forming a regular heating zone between the first extension 122 and the second extension 132. This is advantageous for uniform current distribution between the first extension 122 and the second extension 132, and for uniform heating of the aerosol-generating matrix in each heating zone. In this embodiment, the extensions are connected perpendicularly to the connecting portions. In the embodiment of Figures 1 and 2, the first connecting portions 121 and the second connecting portions 131 are uniformly distributed circumferentially around the first end 110c of the substrate 111. The number of the first extension 122 and the second extension 132 may each be one. One end of the first extending portion 122 is provided at the center of the first connecting portion 121, and the other end of the first extending portion 122 extends to the end face of the second end 110d of the base 111; in other embodiments, the other end of the first extending portion 122 may extend to a position close to the end face. One end of the second extending portion 132 is provided at the center of the second connecting portion 131, and the other end of the second extending portion 132 extends to the end face of the second end 110d of the base 111; in other embodiments, the other end of the second extending portion 132 may extend to a position close to the end face. The first extending portion 122 and the second extending portion 132 are disposed at opposite ends of the same diameter of the cylindrical base 111, spaced apart, and both extend along the axial direction of the heating element 110, and both may be linear. In other embodiments, the first extension 122 and/or the second extension 132 may be curved, as long as they do not intersect. Specifically, the first extension 122 and the second extension 132 are uniformly distributed along the circumferential direction, and the heating layer 112 is divided into two heating regions of the same shape and size, allowing the two heating regions to uniformly heat the aerosol-generating matrix. After the first electrode 120 and the second electrode 130 are energized, current flows from the first extension 122 to the second extension 132 in two opposite directions, passing through the two heating regions and heating the aerosol-generating matrix. This type of heating assembly has a simple circuit distribution and can be connected at the same end, simplifying the wiring path of the heating assembly and reducing manufacturing costs and complexity.

Referring to Figure 5, Figure 5 shows a schematic diagram of an expanded structure of another heating assembly 100. In one embodiment, the second electrode 130 further includes a third connection portion 133, which is used to connect to the negative electrode lead. The third connection portion 133 is provided at the second end 110d of the heating element 110 and is connected to the second extension portion 132. The third connection portion 133 may extend circumferentially along the second end 110d of the heating element 110 to form a closed ring, a ring with a notch, or an arc-shaped structure. When connected, the positive electrode lead is connected to the first connection portion 121 at the first end 110c, and the negative electrode lead may be connected to the second connection portion 131 at the first end 110c or the third connection portion 133 at the second end 110d. Therefore, by providing the third connection portion 133, the heating assembly 100 can achieve both single-sided and double-sided connections. The heating assembly 100 provides multiple wiring methods, allowing the connection method of the heating assembly 100 to be selected as needed. In other embodiments, the first electrode 120 may include the third connection portion 133. The third connection portion 133 is connected to the positive lead, similarly allowing the heating assembly to achieve both single-sided and double-sided connection functions.

In one embodiment, at least one of the first connection portion 121, the second connection portion 131, and the third connection portion 133 is disposed at a distance from the heat generating layer 112 of the heat generating element 110. When the heat generating layer 112 is connected to at least one of the first connection portion 121, the second connection portion 131, and the third connection portion 133, a portion of the current flows from the first connection portion 121 to the second extension portion 132, or from the first extension portion 122 to the second connection portion 131, or from the first extension portion 122 to the third connection portion 133, thereby causing the current flow in the heat generating region to become irregular and the heat generation in the heat generating region to become uneven. Preferably, the first connecting portion 121, the second connecting portion 131, and the third connecting portion 133 are all spaced apart from the heating layer 112 of the heating element 110, restricting the circumferential direction of current flow in the heating region and thereby regularizing the current flow direction in the heating region, resulting in more uniform heating in the heating region and more uniform heating of the aerosol-generating matrix. Furthermore, the edge of the heating layer 112 is flush with the end of the first extending portion 122 near the second end 110d. The first extending portion 122 divides the heating layer 112 into two spaced-apart heating regions of identical shape and area, thereby ensuring more regular current flow direction in the heating region. As can be seen, without the third connecting portion 133, the first connecting portion 121 and the second connecting portion 131 would all be spaced apart from the heating layer 112 of the heating element 110 and would be the same distance from the heating layer 112 of the heating element 110.

In one embodiment, refer to Figures 6 and 7, where Figure 6 provides a schematic diagram of the three-dimensional structure of another heating assembly 100, and Figure 7 is an exploded schematic view of the heating assembly 100 of Figure 6. The first electrode 120 includes a plurality of first extensions 122 connected to a first connection 121, and the second electrode 130 includes a plurality of second extensions 132 connected to a second connection 131. Adjacent first extensions 122 and second extensions 132 are spaced apart, forming a heating region between the adjacent first extensions 122 and second extensions 132. Furthermore, the plurality of first extensions 122 and the plurality of second extensions 132 are alternately spaced apart, thereby dividing the heating layer 112 in the circumferential direction to form an even number of heating regions, each of which occupies a portion of the heating layer 112.

When the number of first extensions 122 and second extensions 132 is the same, the first extensions 122 and second extensions 132 are arranged alternately at intervals, making full use of the heating layer 112 and dividing it into an even number of heating regions for heating the aerosol-generating matrix. When the number of first extensions 122 and second extensions 132 is different, a situation may arise in which two first extensions 122 are adjacent or two second extensions 132 are adjacent. The electrodes of two adjacent first extensions 122 have the same polarity, and the electrodes of two adjacent second extensions 132 have the same polarity, preventing current from flowing between them. This means that a heating region cannot be formed between two adjacent first extensions 122 or two adjacent second extensions 132, and therefore the heating layer 112 cannot be fully utilized. Therefore, when the number of first extensions 122 and second extensions 132 is the same, the first extensions 122 and second extensions 132 are installed alternately at intervals, allowing the heat generating layer 112 to be fully utilized and avoiding a situation where part of the heat generating layer 112 cannot form a heat generating area.

Furthermore, the spacing between any adjacent first extension portions 122 and second extension portions 132 is the same, and the first extension portions 122 and second extension portions 132 extend axially and are linear. As a result, the multiple first extension portions 122 and multiple second extension portions 132 are uniformly distributed circumferentially on the outer surface 110a of the heating element 110, the shape and size of the heating regions between adjacent first extension portions 122 and second extension portions 132 are identical, and the equivalent resistance of each heating region is the same. As a result, the amount of heat released from each heating region after energization can be made approximately the same, and each heating region can uniformly heat the aerosol-generating matrix in each direction.

When there are multiple first extensions 122 and multiple second extensions 132, the second electrode 130 includes a third connection portion 133. The first connection portion 121 is connected to the positive electrode lead and is also used to connect to multiple first extensions 122. The third connection portion 133 is connected to the negative electrode lead and is also used to connect to multiple second extensions 132. In other words, the first electrode 120 and the second electrode 130 form a tooth electrode. Preferably, the third connection portion 133 is connected to each second extension portion 132, and the third connection portion 133 forms a closed loop at the second end 110d of the heater, thereby allowing each heat-generating region to be energized and operated.

6 and 7, the number of first extension portions 122 and the number of second extension portions 132 are both two. The two first extension portions 122 are respectively located at both ends of the first connection portion 121. One second extension portion 132 is connected to the second connection portion 131 and the third connection portion 133, respectively, and the other second extension portion 132 is located between the two first extension portions 122 and is connected only to the third connection portion 133. The third connection portion 133 is arranged in a ring-like manner at the second end 110d of the heating element 110 and is respectively connected to two second extension portions 132. The two first extension portions 122 and the two second extension portions 132 are arranged alternately at intervals, all extend along the axial direction of the heating element 110, and all are linear. The two first extensions 122 and the two second extensions 132 are uniformly distributed along the circumferential direction and divide the heating layer 112 into four heating regions of the same shape and size, allowing the four heating regions to uniformly heat the aerosol-generating matrix. Compared to a heating assembly 100 in which the heating layer 112 is divided into two heating regions by a circuit, the heating assembly 100 with four heating regions has a smaller equivalent resistance and a greater heating power, thereby improving the heating efficiency of the heating assembly 100 for the aerosol-generating matrix.

Referring to Figures 8 and 9, Figure 8 provides a schematic diagram of the three-dimensional structure of another heating assembly 100, and Figure 9 is a schematic exploded view of the heating assembly 100 of Figure 8. In the embodiment of Figures 8 and 9, the number of the first extension portion 122 and the second extension portion 132 is each one. The first extension portion 122 and the second extension portion 132 extend spirally along the circumferential direction of the heating element 110, extending from the first end 110c to the second end 110d of the heating element 110.

Here, the heating layer 112 is located between the first extension portion 122 and the second extension portion 132 and forms a spiral heating region. Preferably, the spiral extension directions of the first extension portion 122 and the second extension portion 132 are the same, and the distance between the first extension portion 122 and the second extension portion 132 is the same. The first extension portion 122, the second extension portion 132, and the heating layer 112 are uniformly distributed on the outer surface 110a of the heating element 110, so that the heating layer 112 uniformly heats the aerosol-generating matrix.

The first extension portion 122 and the second extension portion 132 extend spirally from the first end 110c to the second end 110d of the heating element 110, so that both ends of the first extension portion 122 can be used as the first connecting portion 121, and both ends of the second extension portion 132 can be used as the second connecting portion 131. Alternatively, the first connecting portion 121 and the second connecting portion 131 are provided at both the first end 110c and the second end 110d, and the first connecting portion 121 is connected to one end of the first extension portion 122, and the second connecting portion 131 is connected to one end of the second extension portion 132.

Figure 10 is a structural schematic diagram of an aerosol generating device 200 provided in one embodiment of the present application. In this embodiment, an aerosol generating device 200 is provided. The aerosol generating device 200 may include a heating assembly 100 and a power supply assembly 230.

Here, the heating assembly 100 may specifically be the heating assembly 100 according to any of the above embodiments, and its specific structure and function may refer to the relevant description of the heating assembly 100 in the above embodiment, and the same or similar technical effects may be achieved, so further description will be omitted here.

Here, the aerosol generating device 200 may further include a housing 210 and a mounting seat 220. The mounting seat 220 is used to secure the heating assembly 100 to the housing 210. Specifically, the mounting seat 220 includes a mounting body having a through-hole formed therein, and the heating assembly 100 is specifically inserted into the through-hole to be mounted to the mounting seat 220. In a specific embodiment, a recess may be further formed on the side wall of the through-hole, and the positive and negative electrode leads specifically extend into the mounting seat 220 through the recess to connect to the first electrode 120 and the second electrode 130 on the heating element 110, which are located away from the mounting seat 220. Furthermore, the mounting body has at least two locking portions, and the mounting seat 220 is specifically secured to the housing 210 of the aerosol generating device by the locking portions.

Here, the aerosol generating device 200 may further include a controller (not shown), which is connected to the heating assembly 100 and the power supply assembly 230, respectively, and is used to control the power supply assembly 230 to supply power to the heating assembly 100 after receiving an activation signal, and to control the heating power, heating time, etc. of the heating assembly 100.

Here, the power supply assembly 230 is electrically connected to the first connection portion 121 and the second connection portion 131 of the heating assembly 100 and is used to supply power to the heating assembly 100. In one embodiment, the power supply assembly 230 may specifically include a rechargeable lithium-ion battery.

The aerosol generating device 200 provided by this embodiment includes a heating assembly 100. The heating assembly 100 has a first connection part 121 for connecting to the positive lead and a second connection part 131 for connecting to the negative lead located at the same end of the outer surface 110a of the heating element 110, thereby allowing the positive and negative leads to be connected at the same end of the heating element 110 and eliminating the need to wire the positive or negative lead to the other end to communicate with the corresponding electrode. Compared to a solution in which the first connection part 121 and the second connection part 131 are located at two opposite ends of the outer wall of the heating element 110 and the positive and negative leads must be connected to two ends, this not only significantly simplifies the wiring path for the leads, but also reduces the length of the leads and effectively reduces manufacturing costs and difficulty.

The above is only an embodiment of the present application and does not limit the scope of the patent of the present application. Equivalent structures or equivalent flow transformations made using the contents of the specification and drawings of this application, or applied directly or indirectly to other related technical fields, are all equally included within the scope of the claims of the present application.

Claims (15)

1. A heating assembly including a heating element, a first conductive electrode, and a second conductive electrode,
the heating element contains an aerosol-generating matrix and is used to heat the aerosol-generating matrix when energized;
the conductive first electrode is disposed on the outer surface of the heating element and has a first connection portion;
the conductive second electrode is disposed on an outer surface of the heating element at a distance from the first electrode and has a second connection portion, wherein the first connection portion and the second connection portion are located at the same end of the heating element;
a first connection portion provided at the first end of the heating element; a first electrode further including at least one first extension portion connected to the first connection portion, the first extension portion extending from the first connection portion toward the second end of the heating element; a second electrode further including at least one second extension portion connected to the second connection portion, the second extension portion extending from the second connection portion toward the second end of the heating element; a heating region being formed between adjacent first and second extension portions; the first connection portion being annular, extending along the circumferential direction of the heating element, and having a notch; and the second connection portion being located in the notch of the first connection portion away from the end face of the first end. The heating assembly described in claim 1, characterized in that the first extension portion and/or the second extension portion extend along the axial direction of the heating element and are linear. The heating assembly of claim 2, wherein one first extension and one second extension are spaced apart, or multiple first extensions and multiple second extensions are alternately spaced apart, thereby dividing the heating element and forming an even number of heating regions. The heating assembly of claim 3, wherein the distance between any adjacent first extension portion and second extension portion is the same. The heating assembly of claim 1, wherein the second electrode further includes a third connection portion, the third connection portion being located at a second end of the heating element and connected to at least one of the second extension portions. The heating assembly of claim 1, wherein the number of the first extension portion and the second extension portion is one, and the first extension portion extends from the first connection portion to the second end, and the second extension portion extends from the second connection portion to the second end, thereby forming two heating regions. The heating assembly described in claim 5, characterized in that the number of the first extension portions and the second extension portions is two, the two first extension portions are located at both ends of the first connection portion, respectively, thereby forming four heating regions, and the third connection portion is connected to two of the second extension portions. The heating assembly of claim 1, wherein each of the first and second connection portions is spaced apart from the heat generating layer of the heat generating element. The heating assembly of claim 5, wherein each of the first connection portion, the second connection portion, and the third connection portion is spaced apart from the heat generating layer of the heat generating element. The heating assembly of claim 1, wherein the heating element has a hollow tubular shape. the heating element includes a substrate and a heating layer;
the substrate has a receiving cavity adapted to receive the aerosol-forming matrix;
The heating assembly described in claim 1, characterized in that the heat generating layer is installed on the outer surface of the base and is connected to the first electrode and the second electrode, respectively, and is used to generate heat when electricity is applied to heat the aerosol generating matrix. The heating assembly of claim 11, wherein the substrate is a hollow cylinder and is made of quartz or glass. The heating assembly of claim 11, wherein the heat generating layer is an infrared heat generating film. The heating assembly of claim 11, wherein the heating element further includes at least one restricting member, the at least one restricting member being provided on the base, and the restricting member being used to position the aerosol-generating matrix so that there is a gap between the outer surface of the aerosol-generating matrix and the inner surface of the containing cavity. 1. An aerosol generating device comprising: a heating assembly; and a power supply assembly,
The heating assembly is used to heat the aerosol-generating matrix after energization, the heating assembly being the heating assembly of claim 1 ,
The aerosol generating device, characterized in that the power supply assembly is electrically connected to the first connection portion and the second connection portion of the heating assembly and is used to supply power to the heating assembly.