CN218790572U

CN218790572U - Heating element and aerosol-generating device

Info

Publication number: CN218790572U
Application number: CN202222469042.2U
Authority: CN
Inventors: 梁峰; 郭玉; 杜贤武; 李欢喜; 刘小力; 李洪; 冼小毅; 邓原冰
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-04-07
Anticipated expiration: 2032-09-16

Abstract

The present disclosure provides a heating assembly and an aerosol-generating device. The heating assembly includes: the heating device comprises a containing structure, a plurality of heating films and a power supply assembly; wherein the containment structure has a proximal opening for containing the aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article; the heating films are arranged on the containing structure at intervals and used for heating the containing structure when electrified; the power supply assembly comprises at least three electrodes; at least three electrodes are respectively coupled with the power supply assembly and arranged at two ends of the accommodating structure; and every two electrodes form a power supply group and are electrically connected with one heating film so as to independently supply power to the corresponding heating film. The heating component can realize segmented heating, ensure the sustained release and the suction taste of the aerosol and avoid the phenomenon of over-high or over-low local temperature; meanwhile, the energy consumption of the heating assembly is reduced.

Description

Heating element and aerosol-generating device

Technical Field

The utility model relates to an electron atomization technical field especially relates to a heating element and aerosol generate device.

Background

Due to the traditional aerosol generating products, a large amount of harmful substances are generated during combustion; the aerosol generating device which is not combusted by heating can atomize aerosol generating products to generate aerosol only by heating a special heating assembly to about 350 ℃, and harmful substances are greatly reduced; compared with other electronic atomising devices, heating a non-combustible aerosol-generating device controls the baking temperature of the aerosol-generating article by controlling the temperature of the heating assembly to form an aerosol, which is more popular with consumers.

The form of the heating assembly can be divided into two categories, a central heating assembly inserted into the aerosol-generating article and a peripheral heating assembly wrapped around the aerosol-generating article. At present, whether central heating or peripheral heating generally adopts a mode that a heating element is integrally raised to a certain temperature, and an aerosol generating product is heated along the axial length direction of the aerosol generating product, so that the problem is brought that the heating element cannot be controlled according to the actual temperature field requirement of the heating element to respectively control the aerosol generating product along the axial direction, for example, the aerosol generating product is controlled in two sections, and particularly if non-sectional control integrated heating is adopted for the aerosol generating product with a longer length, the phenomenon that the local temperature is too high or too low easily occurs, and the taste of the aerosol is influenced.

SUMMERY OF THE UTILITY MODEL

The heating assembly and the aerosol generating device provided by the disclosure aim at solving the problem that the existing heating assembly cannot control the heating element to respectively control the aerosol generating product along the axial direction according to the actual temperature field requirement of the heating element, for example, the heating element is divided into two sections for control, and particularly, if the aerosol generating product with longer length is integrally heated by adopting non-sectional control, the phenomenon that the local temperature is too high or too low easily occurs, and the taste of the aerosol is influenced.

In order to solve the technical problem, the technical scheme adopted by the disclosure is as follows: a heating assembly is provided. The heating assembly includes: the heating device comprises a containing structure, a plurality of heating films and a power supply assembly; wherein the containment structure has a proximal opening for containing an aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article; the heating films are arranged on the containing structure at intervals and used for heating the containing structure when electrified; the power supply assembly comprises at least three electrodes; the at least three electrodes are respectively coupled with the power supply assembly and arranged at two ends of the accommodating structure; and every two electrodes form a power supply group and are electrically connected with one heating film so as to independently supply power to the corresponding heating film.

Wherein, each heating film is covered on the containing structure in a surface shape.

The heating films are arranged at intervals along the length direction of the accommodating structure, extend along the circumferential direction of the accommodating structure and are constructed into an arc-shaped structure.

Wherein each heating film is in a closed ring shape.

Wherein the plurality of heating films includes a first heating film and a second heating film;

the power supply assembly comprises a first electrode, a second electrode, a third electrode and a fourth electrode; the first electrode and the second electrode are arranged at the first end of the accommodating structure and are respectively and electrically connected with the first heating film; the third electrode and the fourth electrode are arranged at the second end of the accommodating structure and are respectively and electrically connected with the second heating film.

Wherein each of the first electrode, the second electrode, the third electrode, and the fourth electrode comprises a coupling portion and a connecting portion;

the coupling part is arranged at the end part of the accommodating structure and is used for being coupled with a power supply component so as to supply power to the corresponding heating film; the connecting part is electrically connected with the coupling part and extends along the direction of the length direction of the accommodating structure deviating from the coupling part so as to be in contact with the corresponding heating film to form electrical connection.

Each connecting portion are from corresponding coupling portion extend to corresponding the heating film deviates from the correspondence one side of coupling portion, and each connecting portion are in positive projection on the receiving structure is located the correspondence the heating film is in on the positive projection on the receiving structure.

Each connecting part covers one side surface of the corresponding heating film, which is far away from the containing structure.

the power supply assembly comprises a first electrode, a second electrode and a third electrode; the first electrode is arranged at the first end of the accommodating structure and is electrically connected with the first heating film; the second electrode is arranged at the second end of the accommodating structure and is electrically connected with the second heating film; the third electrode and the first electrode or the second electrode are positioned at the same end of the accommodating structure and are respectively electrically connected with the first heating film and the second heating film.

Wherein each of the first electrode, the second electrode, and the third electrode includes a coupling portion and a connecting portion;

the coupling part is arranged at the end part of the accommodating structure and is used for coupling with a power supply component so as to supply power to the corresponding heating film; the connecting part is electrically connected with the coupling part and extends along the length direction of the accommodating structure towards the direction departing from the coupling part so as to be in contact with the corresponding heating film to form electrical connection.

The connecting parts of the first electrode and the second electrode extend from the corresponding coupling parts to one side of the corresponding heating film, which is far away from the corresponding coupling parts; and the orthographic projection of the connecting part of the first electrode and the connecting part of the second electrode on the containing structure is positioned on the orthographic projection of the corresponding heating film on the containing structure;

the connection portion of the third electrode crosses over the first heating film and the second heating film to be in contact with the first heating film and the second heating film, respectively, to form an electrical connection.

The connecting part of the first electrode, the connecting part of the second electrode and the connecting part of the third electrode cover one side surface of the heating film, which is away from the accommodating structure, corresponding to each other.

The coupling parts of the first electrode and the third electrode respectively extend along the circumferential direction of the accommodating structure and are formed into an arc-shaped structure, and the coupling parts of the first electrode and the third electrode are arranged at the first end of the accommodating structure at intervals along the circumferential direction of the accommodating structure;

the coupling part of the second electrode extends along the circumferential direction of the accommodating structure, is in a closed ring shape and is arranged at the second end of the accommodating structure; the connecting part of the third electrode and the coupling part of the second electrode are arranged at intervals.

The third electrode further comprises a coupling selectable part, the coupling part of the third electrode is oppositely arranged at two ends of the accommodating structure, and one end of the coupling part, which is deviated from the corresponding connecting part of the third electrode, is connected.

The first electrode and the second electrode are symmetrically distributed along the length direction of the accommodating structure, and the connecting part of the third electrode is arranged opposite to the connecting part of the first electrode and the connecting part of the second electrode along the radial direction of the accommodating structure.

Wherein the first electrode includes a first coupling part and a first connecting part connected to each other;

the second electrode extends along the circumferential direction of the accommodating structure and is in contact with and electrically connected with one side of the second heating film, which is far away from the first heating film; the second electrode is used for being coupled with a power supply component;

the third electrode comprises a common coupling part, a first common connecting part and a second common connecting part which are connected in sequence;

the first coupling part and the common coupling part are arranged at the first end of the accommodating structure and are used for coupling with the power supply component so as to supply power to the corresponding heating film; the first connecting part and the first common connecting part respectively extend along the length direction of the accommodating structure to be in contact with two ends of the first heating film along the circumferential direction of the accommodating structure to form electric connection; the second common connecting part is arranged at an interval with the first heating film, extends along the circumferential direction of the accommodating structure, and is in contact with one side, close to the first heating film, of the second heating film to realize electric connection.

Wherein, along a circumferential direction of the housing structure, a length dimension of the second electrode and the second common connection portion is not less than a length dimension of the second heating film.

Wherein, the accommodating structure includes:

a substrate having a hollow tubular shape for receiving the aerosol-generating article;

a radiation layer disposed on an inner surface of the sidewall of the substrate for radiating infrared light when heated to heat the aerosol-generating article; wherein, the heating film is arranged on one side of the substrate, which is far away from the radiation layer.

Wherein, the accommodating structure includes:

a radiation layer disposed on an outer surface of the sidewall of the substrate for radiating infrared light when heated to heat the aerosol-generating article; wherein, the heating film is arranged on one side of the radiation layer, which is far away from the substrate.

Wherein, the accommodating structure includes:

the basal body is in a hollow tubular shape; and the matrix comprises a body and an infrared radiation material dispersed in the body; the substrate is for receiving an aerosol-generating substrate and, when heated, radiates infra-red light to heat the aerosol-generating article; wherein, the heating film is arranged on the outer surface of the side wall of the substrate.

Wherein the substrate is a transparent substrate.

In order to solve the technical problem, another technical scheme adopted by the disclosure is as follows: a heating assembly is provided. This heating element includes: the heating device comprises a containing structure, a plurality of heating films and a power supply assembly; wherein the containment structure has a proximal opening for containing an aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article; the heating films are arranged on the containing structure at intervals along the length direction of the containing structure and used for heating the containing structure when electrified; the power supply assembly comprises at least three electrodes; the at least three electrodes are respectively coupled with the power supply assembly and arranged at the same end of the accommodating structure; every two electrodes form a power supply group and are electrically connected with one heating film so as to independently supply power to the corresponding heating film; the two electrodes in at least one power supply group are provided with conductive parts, the conductive parts extend along the circumferential direction of the accommodating structure, and the two corresponding electrodes of the power supply group are respectively in contact and electric connection with the corresponding heating films through the respective conductive parts.

Wherein each heating film is in a closed ring shape.

the power supply assembly comprises a first electrode, a second electrode and a third electrode; the first electrode is electrically connected with the first heating film; the second electrode is electrically connected with the second heating film; the third electrode is electrically connected to the first heating film and the second heating film, respectively.

Wherein each of the first electrode, the second electrode, and the third electrode has a conductive portion.

The first electrode comprises a first coupling part, a first connecting part and a first conducting part which are sequentially connected; the first coupling part is positioned at the first end of the accommodating structure, the first connecting part extends along the length direction of the accommodating structure, and the first conductive part extends along the circumferential direction of the accommodating structure and is in contact electrical connection with the first side of the first heating film;

the second electrode comprises a second coupling part, a second connecting part and a second conducting part which are connected in sequence; the second coupling part is positioned at the first end of the accommodating structure, the second coupling part extends along the length direction of the accommodating structure, and the second conductive part extends along the circumferential direction of the accommodating structure and is in contact and electrical connection with the first side of the second heating film;

the third electrode comprises a third coupling part, a third connecting part, a third conductive part and a fourth conductive part which are connected in sequence; the third coupling portion is located at the first end of the accommodating structure, the third coupling portion extends along the length direction of the accommodating structure, and the third conductive portion and the fourth conductive portion extend along the circumferential direction of the accommodating structure and are respectively in contact electrical connection with the second side of the first heating film and the second side of the second heating film.

Wherein the third conductive portion and the second conductive portion are disposed at an interval between the first heating film and the second heating film.

Wherein the third electrode has the conductive portion, and one of the first electrode and the second electrode has the conductive portion.

Wherein the first electrode comprises a first coupling part and a first connecting part; the first coupling part is positioned at the first end of the accommodating structure, and at least part of the first connecting part extends along the length direction of the accommodating structure and is in contact and electrical connection with the first heating film;

the third electrode comprises a third coupling part, a third connecting part and a third conducting part which are connected in sequence; the third coupling portion is located at the first end of the accommodating structure, the third coupling portion extends along the length direction of the accommodating structure, is in contact electrical connection with the first heating film and is arranged at an interval with the second heating film, and the third conductive portion extends along the circumferential direction of the accommodating structure and is in contact electrical connection with the second side of the second heating film.

Wherein a portion of the first connection portion extending in a length direction of the receiving structure is located between the second connection portion and the first heating film;

the second conductive portion is located between the first heating film and the second heating film.

The first electrode comprises a first coupling part, a first connecting part and a first conducting part which are connected in sequence; the first coupling part is positioned at the first end of the accommodating structure, the second connecting part extends along the length direction of the accommodating structure, and the first conductive part extends along the circumferential direction of the accommodating structure and is in contact and electrical connection with the first side of the first heating film;

the second electrode comprises a second coupling part and a second connecting part which are connected in sequence; the second coupling part is positioned at the first end of the accommodating structure, extends along the length direction of the accommodating structure and is in contact and electric connection with the second heating film;

the third electrode comprises a third coupling part, a third connecting part and a third conducting part connected to the third connecting part, wherein the third coupling part and the third connecting part are sequentially connected; the third coupling portion is located at the first end of the accommodating structure, the third coupling portion extends along the length direction of the accommodating structure and is in contact electrical connection with the second heating film, and the third conductive portion extends along the circumferential direction of the accommodating structure and is in contact electrical connection with the second side of the first heating film.

Wherein the plurality of heating films further comprises a third heating film; the third connecting portion is further in contact electrical connection with the third heating film;

the power supply assembly further comprises a fourth electrode, and the fourth electrode comprises a fourth coupling part and a fourth connecting part which are connected with each other; the fourth coupling portion is located at the first end of the accommodating structure, and at least part of the fourth coupling portion extends along the length direction of the accommodating structure and is in contact electrical connection with the third heating film.

In order to solve the above technical problem, another technical solution adopted by the present disclosure is: an aerosol-generating device is provided. The aerosol-generating device comprises: a heating assembly and a power supply assembly; wherein, the heating assembly is the heating assembly related to the above; and the power supply component is electrically connected with the heating component and used for supplying power to the heating component.

The beneficial effect of this disclosed embodiment is different from prior art: the heating assembly is provided with a containing structure and a plurality of heating films, the plurality of heating films are arranged on the containing structure at intervals, so that the containing structure is heated by the plurality of heating films when electrified, the containing structure is heated to radiate infrared rays, and the aerosol generating product contained in the containing structure is heated and atomized by the infrared rays. Wherein, through infrared heating's mode, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve aerosol and generate preheating efficiency of goods, and can effectively reduce the inside and outside temperature difference of aerosol generation goods to it is more even to the toast of aerosol generation goods, avoids appearing local high temperature and leads to aerosol generation goods to be burnt problem. In addition, through setting up the power supply unit, make the power supply unit include at least three electrode, and every two electrodes are a set of and are connected with a heating film electricity, in order to supply power to the heating film that corresponds through this electrode group, thereby make a plurality of heating films that the interval set up can independently receive the electric power of power supply unit through the electrode group that corresponds, in order to constitute a plurality of heating regions along the length direction of accommodating the structure at accommodating the structure, realize the segmentation heating of heating unit along its length direction, and then make this heating unit can control the heating temperature of different heating regions according to actual temperature field demand, in order to guarantee the uniformity of taste before and after the continuous release of aerosol and user's suction, avoid appearing local temperature too high or the phenomenon of crossing excessively. In addition, at least three electrodes for coupling with the power supply assembly are arranged at two ends of the accommodating structure, power can be supplied to the heating films respectively, the segmented heating function of the heating assembly is realized, electrodes coupled with the power supply are not required to be additionally arranged in the middle area of the accommodating structure along the length direction of the accommodating structure, the problem that the electrodes in the middle area of the accommodating structure conduct heat to the outside due to contact with other metals is effectively avoided, the energy consumption of the heating assembly is reduced, the temperature consistency of the middle area of the accommodating structure and other areas nearby is ensured, the atomization effect of aerosol generating products corresponding to the middle area of the accommodating structure is improved, and the smoking taste and experience of a user are enhanced.

Drawings

Figure 1 is a schematic structural diagram of an aerosol-generating system provided by an embodiment of the present disclosure;

figure 2 is a schematic structural view of an aerosol-generating device provided by an embodiment of the present disclosure;

fig. 3 is a transverse cross-sectional view of a heating assembly provided by a first embodiment of the present disclosure;

FIG. 4 is a perspective view of a heating assembly provided by an embodiment of the present disclosure;

FIG. 5 is a transverse cross-sectional view of a heating assembly provided in an exemplary embodiment of the present disclosure;

figure 6 is a schematic view of an aerosol-generating article housed within a containment structure provided by an embodiment of the present disclosure;

figure 7 is a schematic view of an aerosol-generating article housed in a containment structure according to another embodiment of the present disclosure;

FIG. 8 is a schematic view of the heating assembly of FIG. 4 deployed in a circumferential direction of the containment structure;

fig. 9 is a schematic view of a heating assembly according to a second embodiment of the present application, which is deployed in a circumferential direction of a housing structure;

FIG. 10 is a schematic view of a heating assembly according to a third embodiment of the present application deployed in a circumferential direction of a receiving structure;

FIG. 11 is a perspective view of the heating assembly of FIG. 10;

fig. 12 is a schematic view of a heating assembly according to a fourth embodiment of the present application, which is unfolded along a circumferential direction of a housing structure;

fig. 13 is a schematic view of a heating assembly according to a fifth embodiment of the present application, which is unfolded along a circumferential direction of a housing structure;

FIG. 14 is a schematic view of a heating assembly according to a sixth embodiment of the present application deployed in a circumferential direction of a receiving structure;

fig. 15 is a schematic view of a heating assembly according to a seventh embodiment of the present application, which is spread along a circumferential direction of a housing structure;

fig. 16 is a schematic view of a heating assembly according to an eighth embodiment of the present application, which is spread along a circumferential direction of a housing structure;

fig. 17 is a schematic view of a heating assembly according to a ninth embodiment of the present application, which is deployed in a circumferential direction of a housing structure;

fig. 18 is a schematic view of a heating assembly according to a tenth embodiment of the present application, which is spread in a circumferential direction of the housing structure 11;

fig. 19 is a transverse sectional view of a heating assembly provided in accordance with a second embodiment of the present disclosure;

FIG. 20 is a transverse cross-sectional view of a heating assembly provided in accordance with another embodiment of the present disclosure;

fig. 21 is a transverse sectional view of a heating assembly provided in a third embodiment of the present disclosure.

Description of reference numerals:

an aerosol-generating device 1; an aerosol-generating article 2; a heating assembly 10; a power supply assembly 20; a housing structure 11; a base 111; an accommodating chamber 110; a first end a; a second end b; a radiation layer 112; a first insulating layer 113; a second insulating layer 114; heating the film 12; the first heating film 12a; the second heating film 12b; a third heating film 12c; a power supply assembly 13; a first electrode 131/136/139; second electrodes 132/137/140; third electrodes 133/138/141; fourth electrodes 134/142; a coupling portion 135a/14a; connecting portions 135b/14b; a coupling selectable part 14c; a common coupling portion 139a; the common connection portion 139b. A first coupling part 15a/18a/21a/24a; a first connection 16a/18b/21b/24b; a common coupling portion 15b, a first common connection portion 16b; a second common connection 16c; a first conductive portion 18c/24c; a second coupling portion 19a/22a/25a; second connection portions 19b/22b/25b; second conductive portions 19c/22c; a third coupling part 20a/23c/26a; third connecting portions 20b/23c/26b; third conductive portions 20c/23c/26c; a fourth conductive portion 20d; a fourth coupling portion 27a; and a fourth connecting portion 27b.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The terms "first", "second" and "third" in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators (such as up, down, left, right, front, rear \8230;) in the disclosed embodiments are only used to explain the relative positional relationship between the components at a particular pose (as shown in the figures), the motion, etc., and if the particular pose changes, the directional indicator changes accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the disclosure. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present disclosure is described in detail below with reference to the drawings and examples.

Referring to fig. 1, fig. 1 is a schematic diagram of an aerosol-generating system according to an embodiment of the present disclosure; in the present embodiment, there is provided an aerosol-generating system comprising an aerosol-generating device 1 and an aerosol-generating article 2 housed within the aerosol-generating device 1. Wherein the aerosol-generating device 1 is used to heat and atomise the aerosol-generating article 2 to form an aerosol for inhalation by a user. The aerosol generating device 1 can be used in the technical fields of medical treatment, cosmetology, health care, electronic atomization and the like; the specific structure and function of which can be seen in the description of the aerosol-generating device 1 provided in the examples below. The aerosol-generating article 2 may employ a solid substrate and may comprise one or more of a powder, granules, shreds of pieces, strips or flakes of one or more plant leaves such as tobacco, vanilla leaves, tea leaves, mint leaves and the like; alternatively, the solid matrix may contain additional volatile flavour compounds to be released when the matrix is heated. Of course, the aerosol-generating article 2 may also be a liquid or cream substrate, such as oils, liquids, etc. to which the aroma component is added.

Referring to fig. 2, fig. 2 is a schematic view of an aerosol-generating device 1 according to an embodiment of the disclosure;

in the present embodiment, an aerosol-generating device 1 is provided, the aerosol-generating device 1 comprising a heating assembly 10 and a power supply assembly 20. Wherein the heating assembly 10 is for receiving and, when energised, atomising the aerosol-generating article 2 to produce an aerosol; the specific structure and function of the heating assembly 10 can be seen in the heating assembly 10 according to any of the following embodiments. The power supply assembly 20 is electrically connected to the heating assembly 10 for supplying power to the heating assembly 10. The power supply component 20 may specifically be a lithium ion battery.

Referring to fig. 3 and 4, fig. 3 is a transverse cross-sectional view of a heating element according to a first embodiment of the present disclosure; FIG. 4 is a perspective view of a heating assembly provided by one embodiment of the present disclosure; in a first embodiment, a heating assembly 10 is provided. The heating assembly 10 includes a housing structure 11, a plurality of heating films 12, and a power supply assembly 13.

As shown in fig. 3, the receiving structure 11 includes a base 111 and a radiation layer 112. The base 111 is hollow and tubular, and the base 111 has a containing cavity 110, and a proximal opening and a distal opening which are communicated with the containing cavity 110, and the proximal opening and the distal opening are oppositely arranged along the length direction C of the base 111; the proximal opening is located at the first end a of the receiving structure 11, and the distal opening is located at the second end b of the receiving structure 11; of course, the proximal opening may be located at the second end b of the receiving structure 11, and the distal opening may be located at the first end a of the receiving structure 11. The housing cavity 110 is for housing the aerosol-generating article 2; the aerosol-generating article 2 is specifically received within the receiving cavity 110 or removed from the receiving cavity 110 through the proximal end opening along the length direction C of the receiving cavity 110. Wherein the proximal opening is the end of the heating assembly 10 near the mouthpiece. Specifically, the base 111 may be a hollow tubular structure, and the hollow tubular structure is surrounded to form the receiving cavity 110. Specifically, the outer diameter of the base 111 is uniform along the length direction C thereof; the substrate 111 may be embodied in a hollow cylindrical shape.

Specifically, the substrate 111 may be made of an insulating material, for example, the substrate 111 may be a quartz tube, a ceramic tube, a mica tube, or the like. Preferably, the substrate 111 may be a transparent quartz tube to facilitate the infrared rays to pass through. Of course, the substrate 111 may be made of non-insulating material, such as stainless steel, aluminum, etc.

The radiation layer 112 is disposed on an inner surface of a sidewall of the base 111, and is configured to radiate infrared rays when heated, so as to heat and atomize the aerosol-generating article 2 accommodated in the accommodating cavity 110 by using the infrared rays. Above-mentioned utilize infrared heating aerosol to generate goods 2, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve aerosol and generate preheating efficiency of goods 2, reduces aerosol and generate the inside and outside temperature difference of goods 2 to make the toasting of aerosol generation goods 2 more even, avoid appearing local high temperature and lead to aerosol generation goods 2 by the problem of scorching. Meanwhile, by disposing the radiation layer 112 on the inner surface of the base 111, the infrared rays radiated by the radiation layer 112 can be directly radiated to the aerosol-generating article 2 without passing through the base 111, and the utilization rate of the infrared rays is high.

The radiation layer 112 may be formed on the entire inner surface of the sidewall of the substrate 111 by silk-screen printing, sputtering, coating, printing, or the like. The radiation layer 112 may be specifically an infrared layer, and the material of the infrared layer includes at least one of high infrared emissivity materials such as perovskite system, spinel system, carbide, silicide, nitride, oxide, and rare earth system material.

Combine fig. 3 and 4; the heating films 12 are disposed on a side of the base 111 away from the radiation layer 112, each heating film 12 is in a planar shape and covers the receiving structure 11 at intervals along a length direction C of the receiving structure 11, and each heating film 12 extends along a circumferential direction of the receiving structure 11 and is configured into an arc-shaped structure for generating heat when energized to heat the radiation layer 112, so that the radiation layer 112 is heated to radiate infrared rays. Specifically, each heating film 12 may be in a closed loop shape. The heating film 12 is made of a resistive material that releases joule heat when energized, such as a thick film printed resistive layer, a thin film printed resistive layer, or a nano resistive layer.

As shown in fig. 3, when the substrate 111 is an insulating substrate 111, the plurality of heating films 12 are specifically disposed on a surface of the substrate 111 facing away from the radiation layer 112, and heat generated by the heating films 12 is conducted to the radiation layer 112 through the substrate 111 to heat the radiation layer 112. It is understood that in this embodiment, the heating film 12 is directly disposed on the surface of the housing structure 11, i.e., the heating film 12 is in direct contact with the surface of the housing structure 11. When the substrate 111 is a non-insulating substrate 111, preferably, the substrate 111 is made of a metal material, such as stainless steel, as shown in fig. 5, and fig. 5 is a transverse cross-sectional view of a heating assembly provided in an embodiment of the present disclosure; a first insulating layer 113 with high temperature resistance is further formed on the surface of the substrate 111 on the side away from the radiation layer 112, and the heating film 12 is specifically arranged on the surface of the first insulating layer 113 on the side away from the substrate 111 to prevent short circuit between the heating film 12 and the substrate 111; at this time, heat generated from the heating film 12 is thermally conducted to the radiation layer 112 through the first insulating layer 113 and the base 111 in order to heat the radiation layer 112. It is understood that, in this embodiment, the heating film 12 is disposed on the housing structure 11 through the first insulating layer 113, i.e., the heating film 12 is in indirect contact with the surface of the housing structure 11. In one embodiment, the first insulating layer 113 may be a glaze layer.

In this embodiment, to increase the heat utilisation of the heating assembly 10 to further increase the heating efficiency of the aerosol-generating article 2; referring to fig. 6, fig. 6 is a schematic view of an aerosol-generating article 2 housed in a containment structure 11 according to an embodiment of the present disclosure; when the aerosol-generating article 2 is received within the receiving cavity 110, the aerosol-generating article 2 is in direct contact with an inner surface of a side wall of the receiving structure 11 (e.g., the surface of the radiating layer 112). In this way, while infrared radiation is radiated into the aerosol-generating article 2 to heat the aerosol-generating article 2, the heat of the heating film 12 is conducted to the aerosol-generating article 2 through the housing structure 11 (e.g., the radiation layer 112) to further heat the aerosol-generating article 2 by the heat, so that the heat utilization rate is improved, and the atomization efficiency and the aerosol generation speed are increased.

Of course, in other embodiments, as shown in fig. 7, fig. 7 is a schematic view of an aerosol-generating article 2 housed in a housing structure 11 according to another embodiment of the present disclosure; the aerosol-generating article 2 may also be spaced from the inner surface of the side wall of the receiving structure 11 (e.g., the radiation layer 112) when the aerosol-generating article 2 is received in the receiving cavity 110, so as to prevent the aerosol-generating article 2 from scratching or rubbing the radiation layer 112. It will be appreciated that in this embodiment, the aerosol-generating article 2 is heated primarily by infrared radiation. Further, the surface of the heating film 12 or/and the radiation layer 112 may be further coated with a protective layer, and the protective layer may specifically be a glaze layer. Wherein, the thickness of the radiation layer 112 can be 10-100 microns. Preferably, the thickness of the radiation layer 112 is 20-40 microns. In this embodiment, the radiation layer 112 can be formed by thick film printing. The material of the radiation layer 112 may include one or more of black silicon, cordierite, spinel of transition metal oxide series, rare earth oxide, ion-co-doped perovskite, silicon carbide, zircon and boron nitride. Of course, the thickness of the radiation layer 112 may also be 1-10 microns; preferably, the thickness of the radiation layer 112 is 1-5 microns. In this embodiment, the radiation layer 112 is embodied as a thin film coating. The radiation layer 112 material may be CrC, tiCN, diamond-like carbon film (DLC).

With reference to fig. 4 and 8, fig. 8 is a schematic view of the heating assembly shown in fig. 4, which is unfolded along the circumferential direction of the housing structure 11; the power supply assembly 13 comprises at least three electrodes; at least three electrodes are respectively coupled to the power supply module 20, and each two electrodes form an independent power supply group in a group and are electrically connected to one heating film 12 of the plurality of heating films 12, wherein one heating film 12 at least corresponds to one power supply group to supply power to the corresponding heating film 12 through the power supply group, so that the power and the heating time of each power supply group are respectively controlled by the electric control board of the aerosol generating device 1, the plurality of heating films 12 arranged at intervals can independently receive the electric power of the power supply module 20 through the corresponding power supply group, so as to form a plurality of heating regions on the accommodating structure 11 along the length direction C of the accommodating structure 11, thereby realizing the sectional heating of the heating module 10 along the length direction C, further enabling the heating module 10 to control the heating temperatures of different heating regions according to the actual temperature field requirements, so as to ensure the continuous release of the aerosol and the consistency of the mouthfeel before and after the suction of the user, and avoid the phenomenon of over-high or over-low local temperature. Wherein, each heating film 12 is correspondingly connected with two electrodes. Each electrode may be made of a metal material having high conductivity, such as silver, gold, copper, or an alloy containing gold, silver, and copper.

Specifically, as shown in fig. 4, at least three electrodes are disposed at two ends of the receiving structure 11; at least three electrodes for coupling with the power supply assembly 20 are arranged at two ends of the accommodating structure 11, so that power can be supplied to the heating films 12 respectively, the segmented heating function of the heating assembly 10 is realized, electrodes coupled with a power supply do not need to be additionally arranged in the middle area of the accommodating structure 11 along the length direction C of the accommodating structure 11, the problem that the electrodes in the middle area of the accommodating structure 11 conduct heat to the outside due to contact with other metals is effectively avoided, the energy consumption of the heating assembly 10 is further reduced, the temperature consistency of the middle area of the accommodating structure 11 and other areas nearby is ensured, the atomization effect of aerosol generating products 2 corresponding to the middle area of the accommodating structure 11 is improved, and the smoking taste and experience of users are enhanced.

In one embodiment, with reference to fig. 4 to 8, the number of the plurality of heating films 12 is two, and the two heating films 12 are a first heating film 12a and a second heating film 12b; the first heating film 12a and the second heating film 12b are disposed at intervals along the length direction C of the housing structure 11, and the first heating film 12a is disposed at a position close to the first end a of the housing structure 11. The second heating film 12b is disposed at a position close to the second end b of the housing structure 11. Specifically, the first heating film 12a and the second heating film 12b are disposed on both sides of the central cross section of the accommodating structure 11, and the first heating film 12a and the second heating film 12b are spread in the circumferential direction of the accommodating structure 11 to form a rectangular structure having the same length and width. Specifically, the first heating film 12a and the second heating film 12b are both closed-loop film layers or coatings.

Referring to fig. 4 and 8, the power supply unit 13 includes four electrodes, namely a first electrode 131, a second electrode 132, a third electrode 133 and a fourth electrode 134. The first electrode 131 and the second electrode 132 are disposed at the first end a of the receiving structure 11, and are respectively in contact with and electrically connected to the first heating film 12 a. The third electrode 133 and the fourth electrode 134 are disposed at the second end b of the receiving structure 11, and are respectively in contact with and electrically connected to the second heating film 12 b. Specifically, the first electrode 131 and the second electrode 132 are electrically connected to both ends of the first heating film 12a in the circumferential direction of the housing structure 11, respectively, and the third electrode 133 and the fourth electrode 134 are electrically connected to both ends of the second heating film 12b in the circumferential direction of the housing structure 11, respectively.

Referring to fig. 8, each of the first electrode 131, the second electrode 132, the third electrode 133, and the fourth electrode 134 includes a coupling portion 135a and a connection portion 135b. The coupling part 135a is disposed at an end of the receiving structure 11, and is coupled to the power supply module 20 to supply power to the corresponding heating film 12. Specifically, the coupling portion 135a is configured in an arc structure extending in the circumferential direction of the housing structure 11. The coupling portions 135a of the two electrodes located at the same end of the receiving structure 11 are spaced apart. The arc-shaped structure referred to hereinafter in this specification refers to an arc-shaped structure having an opening.

Since the coupling part 135a coupled to the power module 20 is disposed at the end of the receiving structure 11, and the receiving structure 11 is not provided with a coupling part to be coupled to the power module 20 in the middle region along the length direction C thereof, the problem that the coupling part in the middle region of the receiving structure 11 contacts other metals to conduct heat to the outside is effectively avoided, and thus, the power consumption of the heating module 10 is reduced, the temperature consistency between the middle region of the receiving structure 11 and other regions in the vicinity thereof is ensured, and the atomization effect of the aerosol-generating product 2 corresponding to the middle region of the receiving structure 11 is improved.

The connection portion 135b is electrically connected to the coupling portion 135a, and extends in the longitudinal direction C of the receiving structure 11 toward a direction away from the coupling portion 135a connected thereto, so as to be electrically connected in contact with the adjacent heating film 12.

In an embodiment, each connection portion 135b extends from the corresponding coupling portion 135a to a side of the corresponding heating film away from the corresponding coupling portion 135a, and an orthogonal projection of each connection portion 135b on the receiving structure 11 is located on an orthogonal projection of the corresponding heating film 12 on the receiving structure 11. For example, the connection portion 135b of the first electrode 131 extends from the coupling portion 135a of the first electrode 131 to a side of the first heating film 12a away from the first end a of the receiving structure 11, and an orthographic projection of the connection portion 135b of the first electrode 131 on the receiving structure 11 is located on an orthographic projection of the first heating film 12a on the receiving structure 11.

As shown in fig. 8, the connection portion 135b of the first electrode 131 and the connection portion 135b of the third electrode 133 are spaced or insulated along the longitudinal direction C of the receiving structure 11; the connection portion 135b of the second electrode 131 and the connection portion 135b of the fourth electrode 134 are spaced or insulated along the longitudinal direction C of the receiving structure 11.

In an embodiment, each connection portion 135b covers a side surface of the corresponding heating film 12 away from the receiving structure 11, so as to achieve a contact electrical connection with the corresponding heating film 12. Of course, each connection portion 135b may also be disposed on the receiving structure 11 and located between the corresponding heating film 12 and the receiving structure 11.

In one embodiment, referring to fig. 9, fig. 9 is a schematic view of a heating assembly provided in a second embodiment of the present application, which is unfolded along a circumferential direction of a housing structure. Another heating assembly 10 is provided, and the heating assembly 10 is different from the heating assembly 10 provided in the first embodiment: the power supply assembly 13 includes three electrodes, namely a first electrode 136, a second electrode 137 and a third electrode 138.

As shown in fig. 9, the first electrode 136 is disposed at the first end a of the accommodating structure 11 and electrically connected to the first heating film 12 a. The second electrode 137 is disposed at the second end b of the accommodating structure 11 and electrically connected to the second heating film 12 b. The third electrode 138 and the first electrode 136 or the second electrode 137 are located at the same end of the housing structure 11, and are electrically connected to the first heating film 12a and the second heating film 12b, respectively. It will be appreciated that one of the first electrode 136 and the third electrode 138 is electrically connected to the positive pole of the power supply, and the other is electrically connected to the negative pole of the power supply; the first electrode 136 and the second electrode 137 are both electrically connected to the positive or negative pole of a power supply.

In the first embodiment, with continued reference to fig. 9, each of the first electrode 136, the second electrode 137, and the third electrode 138 includes a coupling portion 14a and a connecting portion 14b; a coupling part 14a provided at an end of the receiving structure 11 for coupling with the power module 20 to supply power to the corresponding heating film 12; the connecting portion 14b is electrically connected to the coupling portion 14a, and extends in the longitudinal direction C of the housing structure 11 toward a direction away from the coupling portion 14a to contact the corresponding heating film 12 to form an electrical connection.

The connection portion 14b of the third electrode 138 crosses the first heating film 12a and the second heating film 12b, that is, the connection portion 14b of the third electrode 138 extends from the coupling portion 14a of the third electrode 138 to a side of the second heating film 12b away from the first heating film 12a to contact with the first heating film 12a and the second heating film 12b, respectively, to form an electrical connection.

Specifically, the connecting portion 14b of the third electrode 138 covers a side surface of the first heating film 12a and the second heating film 12b away from the accommodating structure 11. Of course, the connection portion 14b of the third electrode 138 may also be disposed on the receiving structure 11 and located between the first heating film 12a, the second heating film 12b and the receiving structure 11.

In an embodiment, referring to fig. 9, the

coupling portions

14a and 14a of the first and

third electrodes

136 and 138 extend along the circumferential direction of the receiving structure 11 and are configured to have an arc-shaped structure, and the

coupling portions

14a and 14a of the first and

third electrodes

136 and 138 are disposed at the first end a of the receiving structure 11 at intervals along the circumferential direction of the receiving structure 11. The coupling portion 14a of the second electrode 137 extends in the circumferential direction of the receiving structure 11 and is configured in a closed ring shape, and the coupling portion 14a of the second electrode 137 is disposed at the second end b of the receiving structure 11. In this embodiment, an end of the connection portion 14b of the third electrode 138 facing away from the coupling portion 14a of the third electrode 138 is spaced apart from the coupling portion 14a of the second electrode 137 to prevent a short circuit.

The

coupling portions

14a and 14b of the first electrode 136 are similar to the

coupling portions

135b and 135a of the first electrode 131, and the

coupling portions

14a and 14b of the second electrode 137 are similar to the

coupling portions

135b and 135a of the third electrode 133, which may be referred to above and are not described herein again.

In another embodiment, referring to fig. 10 and 11, fig. 10 is a schematic view of a heating assembly provided in a third embodiment of the present application deployed in a circumferential direction of a housing structure; fig. 11 is a perspective view of the heating assembly shown in fig. 10. Unlike the power supply assembly 13 shown in fig. 9: the third electrode 138 also includes a coupling option 14c. The coupling selectable part 14c is connected to an end of the connecting part 14b of the third electrode 138 away from the corresponding coupling part 14a, and is disposed opposite to the coupling part 14a of the third electrode 138 at the second end b of the receiving structure 11 for coupling with the power module 20.

Wherein, by adding the coupling selectable part 14C and arranging the coupling selectable part 14C at the end of the containing structure 11, it is not necessary to additionally arrange an electrode coupled with the power module 20 in the middle area of the containing structure 11 along the length direction C; when the coupling portion 14a of the third electrode 138 is damaged and the power module 20 cannot be electrically connected to the heating films 12, the coupling selectable portion 14c is selectively coupled to the power module 20, so that the heating films 12 are electrically connected to the power module 20, and the service life of the heating module 10 is effectively prolonged.

Further, in this embodiment, as shown in fig. 11, the coupling portion 14a of the second electrode 137 is an arc-shaped structure having a notch, and the coupling selectable portion 14c extends along the circumferential direction of the receiving structure 11 and is spaced from the coupling portion 14a of the second electrode 137 along the circumferential direction of the receiving structure 11 to achieve insulation therebetween. Of course, those skilled in the art can understand that the coupling portion 14a of the second electrode 137 may also be a closed ring, the surface of the coupling portion 14a of the second electrode 137 facing away from the receiving structure 11 may be provided with an insulating layer, and the coupling selectable portion 14c may be disposed on the surface of the insulating layer facing away from the coupling portion 14a of the second electrode 137 so as to be insulated from the coupling portion 14a of the second electrode 137.

In yet another embodiment, referring to fig. 12, fig. 12 is a schematic view of a heating assembly provided in a fourth embodiment of the present application deployed along a circumferential direction of a housing structure. The difference between this embodiment and the embodiment corresponding to fig. 9 is that:

the first electrode 136 includes a first coupling portion 15a and a first connection portion 16a connected to each other. The first coupling portion 15a is provided at the first end a of the housing structure 11, and is coupled to the power module 20 to supply power to the corresponding heating film 12. The first connection portion 16a extends in the longitudinal direction C of the housing structure 11 to contact the first heating film 12a to form an electrical connection. The first coupling portion 15a and the first connecting portion 16a of the first electrode 136 are similar to the connecting portion 14b and the coupling portion 14a of the first electrode 136 shown in fig. 9, which is specifically referred to above and is not repeated herein.

The second electrode 137 extends along the circumferential direction of the housing structure 11, and is in contact with and electrically connected to a side of the second heating film 12b away from the first heating film 12a; the second electrode 137 is directly used for coupling to the power module 20.

The third electrode 138 includes a common coupling portion 15b, a first common connection portion 16b, and a second common connection portion 16c, which are sequentially connected.

The common coupling part 15b is disposed at the first end a of the receiving structure 11, and is coupled to the power supply module 20 to supply power to the corresponding heating film 12. The common coupling parts 15b extend in the circumferential direction of the receiving structure 11 and are configured in an arc structure, and the first coupling parts 15a and the common coupling parts 15b of the third electrodes 138 are disposed at intervals in the circumferential direction of the receiving structure 11.

The first common connection portion 16b extends in the length direction C of the housing structure 11 to be in contact with and electrically connected to the first heating film 12 a. The first common connection portion 16b and the first connection portion 16a are in contact with two ends of the first heating film 12a along the circumferential direction of the accommodating structure to form electrical connection. The specific structure of the first common connection portion 16b is similar to that of each connection portion 135b shown in fig. 8, which is described above. It is understood that the first connection portion 16a, the second common connection portion 16c, and the first heating film 12a form two parallel heat generation lines having a current direction around the circumferential direction of the housing structure 11.

The second common connection portion 16c is connected to an end of the first common connection portion 16b away from the common coupling portion 15b, is spaced apart from the first heating film 12a, and extends in a circumferential direction of the receiving structure 11. The second common connection portion 16c is in contact with and electrically connected to a side of the second heating film 12b close to the first heating film 12 a. Specifically, the length dimension of the second electrode 137 and the second common connection portion 16c is not smaller than the length dimension of the second heating film 12b in the circumferential direction of the housing structure 11. It is understood that the second common connection portion 16C, the second heating film 12b and the second electrode 137 form a heat generating line, and a current direction when the heat generating line is energized is parallel to the length direction C of the receiving structure 11.

In the heating module 10 of the present embodiment, the accommodating structure 11 and the plurality of heating films 12 are provided, the plurality of heating films 12 are provided on the accommodating structure 11 at intervals, and the accommodating structure 11 is heated by the plurality of heating films 12 when energized, so that the accommodating structure 11 is heated to radiate infrared rays, and the aerosol-generating product 2 accommodated in the accommodating structure 11 is heated and atomized by the infrared rays. Wherein, through infrared heating's mode, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve aerosol and generate preheating efficiency of goods 2, and can effectively reduce aerosol and generate the inside and outside temperature difference of goods 2 to it is more even to the toast of aerosol generation goods 2, avoids appearing local high temperature and leads to aerosol generation goods 2 to be burnt problem. In addition, by providing the power supply module 13, the power supply module 13 includes at least three electrodes, and each two electrodes are electrically connected to one heating film 12 as a group, so as to supply power to the corresponding heating film 12 through the electrode group, so that the plurality of heating films 12 arranged at intervals can independently receive the electric power of the power supply module 20 through the corresponding electrode group, so as to form a plurality of heating regions on the accommodating structure 11 along the length direction C of the accommodating structure 11, thereby realizing the sectional heating of the heating module, further enabling the heating module 10 to control the heating temperatures of different heating regions according to the actual temperature field requirements, so as to ensure the continuous release of the aerosol and the consistency of the mouthfeel of the aerosol before and after the user sucks, and avoid the phenomenon of over-high or over-low local temperature. In addition, at least three electrodes for coupling with the power supply component 20 are arranged at two ends of the accommodating structure 11, so that power can be supplied to the heating films 12 respectively, the segmented heating function of the heating component is realized, the electrodes coupled with the power supply component 20 are not required to be additionally arranged in the middle area of the accommodating structure 11 along the length direction of the accommodating structure, the problem that the electrodes in the middle area of the accommodating structure 11 conduct heat to the outside due to contact with other metals is effectively avoided, the energy consumption of the heating component is reduced, the temperature consistency of the middle area of the accommodating structure 11 and other areas nearby is ensured, the atomization effect of the aerosol generating product 2 corresponding to the middle area of the accommodating structure 11 is improved, and the smoking taste and experience of a user are enhanced.

In a second embodiment, referring to fig. 13, fig. 13 is a schematic view of a heating assembly provided in a fifth embodiment of the present application, which is spread along a circumferential direction of a housing structure. Another heating assembly is provided, which is different from the heating assembly provided in the first embodiment described above in that: at least three electrodes of the power supply assembly 13 are disposed at the same end of the accommodating structure 11; and at least three electrodes define a plurality of power supply sets, two electrodes in at least one power supply set having conductive portions 18c/19c/20c/20d; for example, the two electrodes electrically connected to the first heating film 12a have the

conductive portions

18c and 20c, respectively, or the two electrodes electrically connected to the second heating film 12b have the

conductive portions

19c and 20d, respectively.

Specifically, each conductive portion 18c/19c/20c/20d extends along the circumferential direction of the housing structure 11, and the electrode having the conductive portion 18c/19c/20c/20d is electrically connected to the corresponding heating film 12 through the corresponding conductive portion 18c/19c/20c/20d. For example, a power supply set formed by the first electrode 139 and the second electrode is electrically connected to the first heating film 12 a. The first electrode has a first conductive portion, the second electrode 140 has a second conductive portion, the first conductive portion and the second conductive portion respectively extend along the circumferential direction of the accommodating structure 11, the first electrode 139 is electrically connected to one end of the first heating film 12a through the first conductive portion, and the second electrode 140 is electrically connected to the other end of the first heating film 12b through the second conductive portion.

In one embodiment, with continued reference to fig. 13, the power supply assembly 13 includes three electrodes, namely a first electrode 139, a second electrode 140, and a third electrode 141.

Wherein the first electrode 139 is electrically connected to the first heating film 12a; the second electrode 140 is electrically connected to the second heating film 12b; the third electrode 141 is electrically connected to the first heating film 12a and the second heating film 12b, respectively, to serve as a common electrode. Specifically, the first electrode 139, the second electrode 140, and the third electrode 141 are all located at the first end a of the accommodating structure 11; and each of the first electrode 139, the second electrode 140, and the third electrode 141 has a conductive portion 18c/19c/20c/20d.

Specifically, as shown in fig. 13, the first electrode 139 includes a first coupling portion 18a, a first connection portion 18b, and a first conductive portion 18c, which are connected in this order. The first coupling part 18a is located at the first end a of the receiving structure 11, extends in a circumferential direction of the receiving structure 11, and is coupled to the power module 20. The first connecting portion 18b extends along the longitudinal direction C of the receiving structure 11 and is disposed on the receiving structure 11. The first conductive portion 18c extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the first side of the first heating film 12 a. Specifically, the first conductive portion 18c has an arc-shaped structure with a notch.

The second electrode 140 includes a second coupling portion 19a, a second connection portion 19b, and a second conductive portion 19c connected in this order. The second coupling portion 19a is located at the first end a of the receiving structure 11 for coupling with the power module 20. The second connecting portion 19b is disposed on the accommodating structure 11 and extends along the longitudinal direction C of the accommodating structure 11. The second conductive portion 19c extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the first side of the second heating film 12 b. Specifically, the second conductive portion 19c also has an arc-shaped structure having a notch.

The third electrode 141 includes a third coupling portion 20a, a third connecting portion 20b, and a third conductive portion 20c and a fourth conductive portion 20d connected to the third connecting portion 20b in this order. The third coupling portion 20a is located at the first end of the receiving structure 11 and is coupled to the power module 20. The third connecting portion 20b extends along the longitudinal direction C of the accommodating structure 11, and extends from the first end a of the accommodating structure 11 to the second end b of the accommodating structure 11. The third conductive portion 20c is connected to the third connection portion 20b, extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the second side of the first heating film 12 a. The fourth conductive portion 20d is connected to the third connection portion 20b, extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the second side of the second heating film 12 b. The third conductive portion 20c may also be an arc structure with a notch; the fourth conductive portion 20d may have a closed loop shape. Specifically, referring to fig. 13, the third conductive portion 20c and the second conductive portion 19c are disposed with an interval between the first heating film 12a and the second heating film 12 b.

In the specific embodiment, the first conductive portion 18C and the third conductive portion 20C are respectively stacked on the first heating film 12a and respectively located on both sides of the first heating film 12a along the length direction C of the housing structure 11 to realize contact electrical connection with the first heating film 12 a. The second conductive portion 19C and the fourth conductive portion 20d are stacked on the second heating film 12b and located on both sides of the second heating film 12b in the longitudinal direction C of the housing structure 11, respectively, to electrically contact the second heating film 12 b.

In another embodiment, referring to fig. 14, fig. 14 is a schematic view of a heating element according to a sixth embodiment of the present application deployed along a circumferential direction of a housing structure 11. The difference from the embodiment corresponding to fig. 13 is that: the third electrode 141 has a conductive portion 23c, and one of the first electrode 139 and the second electrode 140 has a conductive portion.

In this particular embodiment, the first electrode 139 includes a first coupling portion 21a and a first connection portion 21b; the first coupling portion 21a is located at the first end a of the receiving structure 11 and is coupled to the power module 20. The specific structure of the first coupling part 21a is similar to that of the other coupling parts. At least a portion of the first connection portion 21b extends in the longitudinal direction C of the housing structure 11, and is electrically connected in contact with the first heating film 12 a. Specifically, the first connection portion 21b may include a first portion and a second portion according to actual conditions, one end of the first portion is connected to the first coupling portion 21a, and the other end is connected to the second portion. The second portion extends in the longitudinal direction C of the housing structure 11 to be in contact with and electrically connected to the first heating film 12 a. Specifically, the first portion may be bent, curved or have other shapes to guide the second portion to a predetermined position of the receiving structure 11, so as to avoid the end portion. It is understood that the portion without the conductive portion according to this embodiment can be electrically connected to the corresponding heating film 12 by a connecting portion of the corresponding electrode extending in the longitudinal direction C of the housing structure 11, and the description thereof will not be emphasized below.

The second electrode 140 includes a second coupling portion 22a, a second connection portion 22b, and a second conductive portion 22c connected in this order; the second coupling portion 22a is located at the first end a of the receiving structure 11, the second connecting portion 22b extends along the length direction C of the receiving structure 11, and the second conductive portion 22C extends along the circumferential direction of the receiving structure 11 and is in contact with and electrically connected to the first side of the second heating film 12 b. The specific structure of the second electrode 140 is similar to that of the second electrode 140 shown in fig. 13, and the details can be found above.

The third electrode 141 includes a third coupling portion 23a, a third connection portion 23b, and a third conductive portion 23c, which are connected in this order. The third coupling portion 23a is located at the first end a of the receiving structure 11, and the third connecting portion 23b extends along the length direction C of the receiving structure 11 and is electrically connected to the first heating film 12a in a contact manner. Specifically, the third connecting portion 23b further extends along the length direction C of the accommodating structure 11 to a position close to the second end b of the accommodating structure 11, and is spaced apart from the second heating film 12 b. The third conductive portion 23c is electrically connected to the third connection portion 23b, extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the second side of the second heating film 12 b. The second connection portion 22b is spaced apart from the first heating film 12a and is located between the first heating film 12a and the second heating film 12 b.

The specific structure and function of any coupling portion related to this embodiment are the same as or similar to those of the coupling portion 135a shown in fig. 8, and are not repeated herein.

In yet another embodiment, referring to fig. 15, fig. 15 is a schematic view of a heating assembly provided in a seventh embodiment of the present application, which is spread along a circumferential direction of the housing structure 11. The difference from the embodiment shown in fig. 13 described above is that: only the third electrode 141 of the first electrode 139, the second electrode 140, and the third electrode 141 has the conductive portion 26c, and the first electrode 139 and the second electrode 140 do not have the conductive portion.

In this embodiment, the first electrode 139 includes a first coupling portion 24a, a first connection portion 24b, and a first conductive portion 24c, which are connected in this order. The first coupling portion 24a is located at the first end a of the receiving structure 11, the first connecting portion 24b extends along the length direction C of the receiving structure 11, and the first conductive portion 24C extends along the circumferential direction of the receiving structure 11 and is in contact with and electrically connected to the first side of the first heating film 12 a. The specific structure of the first electrode 139 can be seen from the specific structure and function of the first electrode 139 shown in fig. 13.

The second electrode 140 includes a second coupling part 25a and a second connection part 25b connected in sequence. The second coupling portion 25a is located at the first end of the receiving structure 11 and is coupled to the power module 20. The second connection portion 25b extends along the length direction C of the receiving structure 11 and extends from the second coupling portion 25a to a side of the second heating film 12b away from the first heating film 12a, and the second connection portion 25b is in contact with and electrically connected to a corresponding portion of the second heating film 12b along the circumferential direction of the receiving structure 11 and the second heating film 12 b. Specifically, the second connection portion 25b and the portion of the second heating film 12b corresponding to the second connection portion in the circumferential direction of the housing structure 11 may be stacked on the second heating film 12b to achieve contact electrical connection therebetween. It will be appreciated by those skilled in the art that the electrical contact between the electrodes and the corresponding heating film 12 involved in the present application can be achieved by a stacked arrangement of the two.

The third electrode 141 includes a third coupling portion 26a, a third connection portion 26b, and a third conductive portion 26c connected to the third connection portion 26 b. The third coupling portion 26a is located at the first end of the receiving structure 11, and the third connecting portion 26b extends along the length direction C of the receiving structure 11, extends from the third coupling portion 26a to a side of the second heating film 12b departing from the first heating film 12a, and is electrically connected to the second heating film 12b in a contact manner. Like the second connection portion 25b, the third connection portion 26b and a portion corresponding to the second heating film 12b in the circumferential direction of the housing structure 11 may be stacked on the second heating film 12b to achieve contact electrical connection therebetween, so that when electricity is applied, an eddy current is formed on the second heating film 12b in the circumferential direction of the housing structure 11. The third conductive portion 26c extends in the circumferential direction of the housing structure 11, and is electrically connected in contact with the second side of the first heating film 12 a.

Of course, in other embodiments, in combination with fig. 16, fig. 16 is a schematic view of the heating assembly provided in the eighth embodiment of the present application, which is expanded along the circumferential direction of the housing structure 11. The plurality of heating films 12 may further include a third heating film 12c. The third heating film 12C and the second heating film 12b are disposed at an interval along the length direction C of the accommodating structure 11, and are located on a side of the second heating film 12b away from the first heating film 12 a.

In this particular embodiment, the third connection portion 26b may further extend to a side of the third heating film 12c facing away from the second heating film 12b, and a portion of the third connection portion 26b corresponding to the third heating film 12c along the circumferential direction of the housing structure 11 may be in contact with the second heating film 12b, such as in a stacked arrangement with the second heating film 12b, so as to achieve contact and electrical connection of the third connection portion 26b and the third heating film 12c.

In this particular embodiment, the power supply assembly further comprises a fourth electrode 142, the fourth electrode 142 comprising a fourth coupling portion 27a and a fourth connection portion 27b connected to each other. The fourth coupling portion 27a is located at the first end a of the receiving structure 11 and is configured to couple to the power module 20, and at least a portion of the fourth coupling portion 27b extends in the longitudinal direction C of the receiving structure 11 and is electrically connected to the third heating film 12C in contact therewith. Specifically, the fourth connection portion 27b may be stacked with the third heating film 12c along a portion corresponding to the third heating film 12c in the circumferential direction of the housing structure 11 to achieve contact electrical connection therebetween, so that an eddy current is formed on the third heating film 12c along the circumferential direction of the housing structure 11 when a current is applied thereto. The fourth electrode 142 is similar to the second electrode 140 in specific structure.

Of course, in other embodiments, referring to fig. 17, fig. 17 is a schematic view of the heating assembly provided in the ninth embodiment of the present application, which is unfolded along the circumferential direction of the housing structure 11. Unlike any of the embodiments of fig. 13 to 17 described above: the power supply assembly 13 specifically includes four electrodes, which are a first electrode 131, a second electrode 132, a third electrode 133, and a fourth electrode 134. The first electrode 131 and the second electrode 132 are electrically connected in contact with the first heating film 12a, respectively. The third electrode 133 and the fourth electrode 134 are electrically connected in contact with the second heating film 12b, respectively.

Specifically, the first electrode 131 and the second electrode 132 respectively include a coupling portion 135a, a connecting portion 135b, and a conductive portion 135c. The coupling portion 135a has a structure and a function similar to those of the coupling portion 135a described above. The connecting portion 135b extends in the longitudinal direction C of the housing structure 11. The conductive portion 135c is electrically connected to an end of the connecting portion 135b away from the coupling portion 135a, and extends in a circumferential direction of the housing structure 11 to be in contact with and electrically connected to the first heating film 12 a. The third and

fourth electrodes

133 and 134 include

coupling portions

135a and 135b, respectively. The coupling parts 135a and the connection parts 135b of the third and

fourth electrodes

133 and 134 are similar to the coupling parts 135a and the connection parts 135b referred to in fig. 8.

The

coupling portions

135a and 135a of the first electrode 131, the second electrode 132, the third electrode 133, and the fourth electrode 134 are located at the same end of the receiving structure 11. For example, the

coupling portions

135a, and 135a of the first, third, and

fourth electrodes

131, 132, 133, 134 are all located at the first end a of the receiving structure 11. In this embodiment, the first electrode 131 and the second electrode 132 are electrically connected to the first heating film 12a, as shown in fig. 15, in such a manner that the third connection portions 26b of the first electrode 139 and the third electrode 141 are electrically connected to the first heating film 12 a. The electrical connection between the third electrode 133 and the fourth electrode 134 and the second heating film 12b can be similar to that between the third electrode 133 and the fourth electrode 134 and the second heating film 12b in fig. 8, and is not described herein again.

Of course, in other embodiments, referring to fig. 18, fig. 18 is a schematic view of the heating assembly provided in the tenth embodiment of the present application, which is spread out in the circumferential direction of the housing structure 11. Three electrodes of the power supply assembly 13: each of the first electrode 131, the second electrode 132 and the third electrode 133 includes a coupling portion 135a and a connecting portion 135b, the coupling portion 135a of the first electrode 131, the coupling portion 135a of the second electrode 132 and the coupling portion 135a of the third electrode 133 are located at the same end of the receiving structure 11, and the connecting portion 135b of the first electrode 131, the connecting portion 135b of the second electrode 132 and the connecting portion 135b of the third electrode 133 respectively extend along the length direction C of the receiving structure 11 to be in contact with and electrically connected to the corresponding heating film 12, so as to form two heating lines, and each heating line forms an eddy current along the circumferential direction when being electrified. Wherein the third electrode 133 is electrically connected as a common electrode to the first heating film 12a and the second heating film 12b, respectively. Other structures and functions of the first electrode 131, the second electrode 132 and the third electrode 133 are similar to those of the above-mentioned related connection manner, and are not described herein again.

In the heating module 10 of the present embodiment, the accommodating structure 11 and the plurality of heating films 12 are provided, the plurality of heating films 12 are provided on the accommodating structure 11 at intervals, and the accommodating structure 11 is heated by the plurality of heating films 12 when energized, so that the accommodating structure 11 is heated and radiates infrared rays, and the aerosol-generating product 2 accommodated in the accommodating structure 11 is heated and atomized by the infrared rays. Wherein, through infrared heating's mode, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve aerosol and generate preheating efficiency of goods 2, and can effectively reduce the inside and outside temperature difference of aerosol and generate goods 2 to it is more even to the toast of aerosol and generate goods 2, avoids appearing local high temperature and leads to aerosol to generate the problem that goods 2 are singed. In addition, by providing the power supply module 13, the power supply module 13 includes at least three electrodes, and each two electrodes are electrically connected to one heating film 12 for supplying power to the corresponding heating film 12 through the electrode group, so that the plurality of heating films 12 arranged at intervals can independently receive the electric power of the power supply module 20 through the corresponding electrode group to form a plurality of heating regions on the accommodating structure 11, thereby realizing the segmented heating of the heating module 10, and ensuring the continuous release of the aerosol and the consistency of the mouthfeel before and after the smoking of the user. In addition, at least three electrodes for coupling with the power supply component 20 are arranged at the same end of the accommodating structure 11, wiring is facilitated, power can be supplied to the heating films 12 respectively, the segmented heating function of the heating component 10 is realized, electrodes coupled with the power supply do not need to be additionally arranged in the middle area of the accommodating structure 11 along the length direction of the accommodating structure, the problem that the electrodes in the middle area of the accommodating structure 11 conduct heat to the outside due to contact with other metals is effectively avoided, the energy consumption of the heating component 10 is further reduced, the temperature consistency of the middle area of the accommodating structure 11 and other areas nearby is guaranteed, the atomization effect of the aerosol generating product 2 corresponding to the middle area of the accommodating structure 11 is improved, and the smoking taste and experience of a user are enhanced.

In a second embodiment, referring to fig. 19, fig. 19 is a transverse cross-sectional view of a heating assembly 10 provided in a second embodiment of the present disclosure; a second heating element 10 is provided, which differs from the heating element 10 provided in the first embodiment described above in that: the radiation layer 112 is disposed on the outer surface of the sidewall of the substrate 111.

In this embodiment, as shown in fig. 19, when the radiation layer 112 is an insulating radiation layer 112, the heating film 12 is specifically disposed on a surface of the radiation layer 112 facing away from the substrate 111. Heat generated by the heating film 12 when energized is directly conducted to the radiation layer 112, the radiation layer 112 is heated to generate infrared rays, and the infrared rays penetrate through the transparent base 111 and enter the receiving cavity 110 to heat the aerosol-generating product 2 received in the receiving cavity 110. In this embodiment, the aerosol-generating article 2 may also be in direct contact with the transparent substrate 111 to conduct heat from the substrate 111 directly to the aerosol-generating article 2 for heating; alternatively, the aerosol-generating article 2 is spaced from the substrate 111.

When the radiation layer 112 is made of non-insulating material, as shown in fig. 20, fig. 20 is a lateral cross-sectional view of a heating element according to another embodiment of the disclosure; to avoid short circuiting of the heating film 12; the surface of the radiation layer 112 facing away from the substrate 111 is further provided with a second insulating layer 114, the second insulating layer 114 being located between the radiation layer 112 and the heating film 12.

In a third embodiment, referring to fig. 21, fig. 21 is a transverse cross-sectional view of a heating assembly provided by a third embodiment of the present disclosure; there is provided a further heating element 10, which differs from the heating element 10 provided in the previous embodiment in that: the housing structure 11 includes a base 111.

The base 111 has a hollow tubular shape, and the base 111 includes a main body and an infrared radiation material dispersed in the main body. The body forms a receiving cavity 110 and a proximal opening communicating with the receiving cavity 110 to receive the aerosol-generating article 2. The substrate 111 radiates infra-red light when heated to heat the aerosol-generating article 2. It is understood that in this embodiment, the substrate 111 itself is heated to radiate infrared light, and no infrared layer is added to the surface of the substrate 111. The substrate 111 may be a quartz tube.

Of course, in order to increase the amount of the radiated infrared rays to increase the heating speed, a radiated infrared layer may be further provided on the surface of the base 111; the above description can be specifically referred to, and is not repeated herein.

The above embodiments are merely examples of the disclosure, and not intended to limit the scope of the disclosure, and all equivalent structures or equivalent processes that may be modified from the disclosure and drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the disclosure.

Claims

1. A heating assembly, comprising:

a containment structure having a proximal opening for containing an aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article;

the heating films are arranged on the containing structure at intervals and used for heating the containing structure when electrified;

a power supply assembly comprising at least three electrodes; the at least three electrodes are respectively coupled with the power supply assembly and arranged at two ends of the accommodating structure; and every two electrodes form a power supply group and are electrically connected with one heating film so as to independently supply power to the corresponding heating film.

2. The heating assembly of claim 1,

each heating film is covered on the containing structure in a surface shape.

3. The heating assembly of claim 2,

4. The heating assembly of claim 3,

each heating film is in a closed ring shape.

5. The heating assembly of claim 3,

the plurality of heating films includes a first heating film and a second heating film;

6. The heating assembly of claim 5,

each of the first electrode, the second electrode, the third electrode, and the fourth electrode includes a coupling portion and a connecting portion;

the coupling part is arranged at the end part of the accommodating structure and is used for being coupled with a power supply component so as to supply power to the corresponding heating film; the connecting part is electrically connected with the coupling part and extends along the length direction of the accommodating structure towards the direction departing from the coupling part so as to be in contact with the corresponding heating film to form electrical connection.

7. The heating assembly of claim 6,

each connecting portion from corresponding the coupling portion extend to corresponding the heating film deviates from the corresponding one side of coupling portion, and each connecting portion is in the orthographic projection on the accommodating structure is located the corresponding heating film is in on the orthographic projection on the accommodating structure.

8. The heating assembly of claim 7,

each connecting part covers one side surface of the corresponding heating film deviating from the containing structure.

9. The heating assembly of claim 3,

the power supply assembly comprises a first electrode, a second electrode and a third electrode; the first electrode is arranged at the first end of the accommodating structure and is electrically connected with the first heating film; the second electrode is arranged at the second end of the accommodating structure and is electrically connected with the second heating film; the third electrode and the first electrode or the second electrode are located at the same end of the accommodating structure and are respectively electrically connected with the first heating film and the second heating film.

10. The heating assembly of claim 9,

each of the first electrode, the second electrode, and the third electrode includes a coupling portion and a connecting portion;

11. The heating assembly of claim 10,

the connecting parts of the first electrode and the second electrode extend from the corresponding coupling parts to one side of the corresponding heating film, which is far away from the corresponding coupling parts; and the orthographic projections of the connecting parts of the first electrodes and the connecting parts of the second electrodes on the containing structures are positioned on the orthographic projections of the corresponding heating films on the containing structures;

12. The heating assembly of claim 11,

the connecting part of the first electrode, the connecting part of the second electrode and the connecting part of the third electrode cover one side surface of the heating film departing from the containing structure.

13. The heating assembly of claim 11,

14. Heating assembly according to claim 11 or 12,

the third electrode still includes the coupling connection optional part, with the coupling connection part of third electrode set up relatively in accept the structure's both ends, and with the connecting portion of third electrode deviates from the correspondence the one end of coupling connection is connected.

15. The heating assembly of claim 14,

16. The heating assembly of claim 9,

the first electrode includes a first coupling part and a first connection part connected to each other;

the first coupling part and the public coupling part are arranged at the first end of the accommodating structure and are used for being coupled with the power supply component so as to supply power to the corresponding heating film; the first connection part and the first common connection part respectively extend along the length direction of the accommodating structure to be in contact with two ends of the first heating film along the circumferential direction of the accommodating structure to form electric connection; the second common connecting portion is arranged at an interval with the first heating film, extends along the circumferential direction of the accommodating structure, and is in contact with one side, close to the first heating film, of the second heating film to realize electric connection.

17. The heating assembly of claim 16,

the length dimension of the second electrode and the second common connection portion is not less than the length dimension of the second heating film in the circumferential direction of the housing structure.

18. The heating assembly of claim 1,

the housing structure includes:

a radiation layer disposed on an inner surface of the sidewall of the substrate for radiating infrared light when heated to heat the aerosol-generating article; wherein, the heating film is arranged on one side of the substrate deviating from the radiation layer.

19. The heating assembly of claim 1,

the housing structure includes:

20. The heating assembly of claim 1,

the housing structure includes:

21. A heating element as claimed in any of claims 18 to 20, wherein the substrate is a transparent substrate.

22. A heating assembly, comprising:

the heating films are arranged on the containing structure at intervals along the length direction of the containing structure and used for heating the containing structure when power is supplied;

a power supply assembly comprising at least three electrodes; the at least three electrodes are respectively coupled with the power supply assembly and arranged at the same end of the accommodating structure; every two electrodes form a power supply group and are electrically connected with one heating film so as to independently supply power to the corresponding heating film;

the two electrodes in at least one power supply group are provided with conductive parts, the conductive parts extend along the circumferential direction of the accommodating structure, and the electrodes with the conductive parts are respectively in contact and electrical connection with the corresponding heating films through the conductive parts.

23. The heating assembly of claim 22,

each heating film is covered on the containing structure in a surface shape.

24. The heating assembly of claim 23,

25. The heating assembly of claim 24,

each heating film is in a closed ring shape.

26. The heating assembly of claim 25,

27. The heating assembly of claim 26,

each of the first electrode, the second electrode, and the third electrode has a conductive portion.

28. The heating assembly of claim 27,

the first electrode comprises a first coupling part, a first connecting part and a first conducting part which are sequentially connected; the first coupling part is positioned at the first end of the accommodating structure, the first connecting part extends along the length direction of the accommodating structure, and the first conductive part extends along the circumferential direction of the accommodating structure and is in contact and electric connection with the first side of the first heating film;

the third electrode comprises a third coupling part, a third connecting part, a third conducting part and a fourth conducting part which are connected in sequence; the third coupling portion is located at the first end of the accommodating structure, the third coupling portion extends along the length direction of the accommodating structure, and the third conductive portion and the fourth conductive portion extend along the circumferential direction of the accommodating structure and are respectively in contact electrical connection with the second side of the first heating film and the second side of the second heating film.

29. The heating assembly of claim 28,

the third conductive part and the second conductive part are disposed at an interval between the first heating film and the second heating film.

30. The heating assembly of claim 26,

the third electrode has the conductive portion, and one of the first electrode and the second electrode has the conductive portion.

31. The heating assembly of claim 30,

the first electrode comprises a first coupling part and a first connecting part; the first coupling part is positioned at the first end of the accommodating structure, and at least part of the first connecting part extends along the length direction of the accommodating structure and is in contact and electrical connection with the first heating film;

the third electrode comprises a third coupling part, a third connecting part and a third conducting part which are connected in sequence; the third coupling portion is located at the first end of the accommodating structure, extends along the length direction of the accommodating structure, is in contact and electrical connection with the first heating film, and is arranged at an interval with the second heating film, and the third conductive portion extends along the circumferential direction of the accommodating structure and is in contact and electrical connection with the second side of the second heating film.

32. The heating assembly of claim 31,

the part of the first connecting part extending along the length direction of the accommodating structure is positioned between the second connecting part and the first heating film;

33. The heating assembly of claim 26,

the second electrode comprises a second coupling part and a second connecting part which are connected in sequence; the second coupling part is positioned at the first end of the accommodating structure, extends along the length direction of the accommodating structure and is electrically connected with the second heating film in a contact manner;

the third electrode comprises a third coupling part, a third connecting part and a third conducting part connected to the third connecting part, which are sequentially connected; the third coupling portion is located at the first end of the accommodating structure, the third coupling portion extends along the length direction of the accommodating structure and is in contact and electrical connection with the second heating film, and the third conductive portion extends along the circumferential direction of the accommodating structure and is in contact and electrical connection with the second side of the first heating film.

34. The heating assembly of claim 33,

the plurality of heating films further includes a third heating film; the third connecting portion is further in contact electrical connection with the third heating film;

35. An aerosol-generating device, comprising:

a heating assembly as claimed in any one of claims 1 to 34;

and the power supply assembly is electrically connected with the heating assembly and used for supplying power to the heating assembly.