CN115606865A

CN115606865A - Heating element and aerosol-generating device

Info

Publication number: CN115606865A
Application number: CN202211131838.5A
Authority: CN
Inventors: 梁峰; 郭玉; 杜贤武; 刘小力; 冼小毅; 李欢喜; 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: 2023-01-17
Also published as: WO2024055720A1

Abstract

The application provides a heating element and an aerosol-generating device. This heating element includes: the accommodating structure, at least one heating film 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; at least one heating film is arranged on the containing structure in a linear shape and used for heating the containing structure when electrified; wherein at least a portion of each heating film extends along the length direction of the accommodating structure; a power supply assembly including a first electrode and a second electrode; and two ends of each heating film are respectively and electrically connected with the first electrode and the second electrode so as to supply power to the at least one heating film. This heating element has effectively improved heating efficiency, and the heating homogeneity is better, has avoided aerosol to generate local high temperature of goods, leads to the problem of being burnt.

Description

Heating element and aerosol-generating device

Technical Field

The invention relates to the technical field of electronic atomization, in particular to a heating assembly and an aerosol generating device.

Background

Heat Not Burning (HNB) aerosol generating devices are gaining increasing attention and popularity due to their advantages of safe, convenient, healthy, environmentally friendly, etc. use.

Existing heated non-combustible aerosol generating devices generally include a heating assembly and a power supply assembly; wherein the heating assembly is configured to heat and atomize the aerosol-generating article upon energization to form an aerosol; the power supply assembly is connected with the heating assembly and used for supplying power to the heating assembly.

However, existing heating assemblies have a relatively low heating efficiency, a relatively large temperature differential between the interior and exterior of the aerosol-generating article, and relatively poor heating uniformity. In addition, when the existing heating assembly is used for heating, the high-temperature area is positioned in the central area of the heating body, the speed of generating aerosol is slow, the temperature field cannot be designed according to expectation, and the positions of other asymmetrical high-temperature areas cannot be designed conveniently.

Disclosure of Invention

The application provides a heating element and aerosol generate device aims at solving current heating element, and heating efficiency is lower, and the inside and outside temperature difference of aerosol generate goods is great, and heating homogeneity is relatively poor.

In order to solve the technical problem, the application adopts a technical scheme that: a heating assembly is provided. This heating element includes: the accommodating structure, at least one heating film and a power supply assembly are arranged; 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; at least one heating film is arranged on the containing structure in a linear shape and used for heating the containing structure when electrified; wherein at least a portion of each heating film extends along the length direction of the accommodating structure; the power supply assembly comprises a first electrode and a second electrode; and two ends of each heating film are respectively and electrically connected with the first electrode and the second electrode so as to supply power to the at least one heating film.

Wherein the heating film comprises a plurality of heating wires, at least two of the heating wires of the plurality of heating wires being connected together in parallel; and at least part of each heating wire extends along the length direction of the accommodating structure.

Wherein at least some of the heater wires in the plurality of heater wires are curvilinear.

Wherein, the curve is a U-shaped curve or an S-shaped curve.

The heating wires extend along the length direction of the accommodating structure respectively, and the first ends of part of the heating wires are electrically connected with the first electrode, and the second ends of the part of the heating wires are electrically connected with the second ends of the rest of the heating wires; the first end of the rest part of the heating wire is electrically connected with the second electrode.

Wherein the heating film further comprises: a first electrical connection portion extending in a circumferential direction of the housing structure; the second end of each heating wire is electrically connected with the first electric connection part respectively.

Wherein the heating film further comprises:

a second electrical connection portion; first ends of part of the heating wires in the plurality of heating wires are respectively electrically connected with the second electric connection parts so as to be electrically connected with the first electrodes through the second electric connection parts; and/or the presence of a gas in the gas,

a third electrical connection portion; the first ends of the rest heating wires in the plurality of heating wires are respectively electrically connected with the third electric connection part so as to be electrically connected with the second electrode through the third electric connection part.

Wherein the heating film comprises a first heating wire, a second heating wire, a third heating wire and a fourth heating wire; the first heater wire and the second heater wire are connected in parallel between the first electrode and the first electrical connection; the third heater wire and the fourth heater wire are connected in parallel between the second electrode and the first electrical connection portion.

Wherein, each heating wire is a U-shaped curve.

The heating lines are symmetrically distributed along the central axis of the heating film in the width direction; two adjacent heating wires are symmetrically distributed along the central axis where the heating wires are located.

And two ends of each heating wire are respectively and electrically connected with the first electrode and the second electrode.

Each heating wire comprises a first part, a second part and a third part which are connected in sequence; the first part and the third part respectively extend in the length direction of the accommodating structure and are respectively electrically connected with the first electrode and the second electrode; the second portion extends in a circumferential direction of the housing structure.

Wherein the heating film comprises a first heating wire and a second heating wire connected in parallel;

a first portion of the first heater wire is curvilinear; the second and third portions of the first heater wire are straight;

the first portion, the second portion, and the third portion of the second heating wire are all straight lines.

Wherein the length of the second heating wire is greater than the length of the first heating wire, and the second heating wire surrounds the periphery of the first heating wire.

The first electrode and the second electrode are located at the same end of the accommodating structure.

Wherein the at least one heating film is configured to have a different watt density on both sides of a midpoint in a length direction of the housing structure.

A plane which is perpendicular to the length direction of the accommodating structure and passes through the midpoint divides the surface of the accommodating structure into a first area and a second area; the second region is located on a side of the first region facing away from the proximal opening;

the power density of the at least one heating film in the first region is greater than the power density of the at least one heating film in the second region.

In order to solve the technical problem, the application adopts a technical scheme that: 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; the power supply assembly is electrically connected with the heating assembly and used for supplying power to the heating assembly.

The beneficial effect of this application embodiment is different from prior art: the heating assembly is provided with a containing structure and at least one heating film, the at least one heating film is arranged on the containing structure, at least part of each heating film extends along the length direction of the containing structure, so that the containing structure is heated by the at least one heating film when being 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. Meanwhile, the power supply assembly is arranged to enable the power supply assembly to comprise a first electrode and a second electrode, and two ends of each heating film are electrically connected with the first electrode and the second electrode respectively, so that power is supplied to each heating film through the power supply assembly, and a single-section heating assembly is formed.

Drawings

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

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

FIG. 3 is a transverse cross-sectional view of a heating assembly provided in accordance with a first embodiment of the present application;

FIG. 4 is a perspective view of a heating assembly provided in accordance with an embodiment of the present application;

FIG. 5 is a disassembled schematic view of FIG. 4;

FIG. 6 is a transverse cross-sectional view of a heating assembly provided in accordance with an embodiment of the present application;

figure 7 is a schematic view of an aerosol-generating article housed in a containment structure provided by an embodiment of the present application;

figure 8 is a schematic view of an aerosol-generating article housed in a containment structure according to another embodiment of the present application;

FIG. 9 is a schematic view of the heating film and power supply assembly of FIG. 4 deployed in a circumferential direction of the containment structure;

fig. 10 is a schematic view of a heating film and a power supply assembly deployed in a circumferential direction of a housing structure according to another embodiment of the present application;

FIG. 11 is a perspective view of a heating assembly provided in accordance with another embodiment of the present application;

FIG. 12 is a disassembled view of FIG. 11;

FIG. 13 is a schematic view of the heating film and power supply assembly of FIG. 11 deployed in a circumferential direction of the containment structure;

FIG. 14 is a transverse cross-sectional view of a heating assembly provided in accordance with a second embodiment of the present application;

FIG. 15 is a transverse cross-sectional view of a heating assembly provided in accordance with another embodiment of the present application;

fig. 16 is a transverse cross-sectional view of a heating assembly provided in accordance with a third embodiment of the present application.

Description of the reference numerals:

an aerosol-generating device 1; an aerosol-generating article 2; a heating assembly 10; a power supply component 20; a housing structure 11; a base 111; a receiving cavity 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 wire 121a; the second heating wire 121b; a heating wire 121; a first electrical connection 122; a second electrical connection 123; a third electrical connection 124; a first portion 125; a second portion 126; a third portion 127; a power supply assembly 13; a first electrode 131; a second electrode 132; a midline plane M; a first region A; a second region B.

Detailed Description

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

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of 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 application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. In the embodiment of the present application, all the directional indicators (such as upper, lower, left, right, front, and rear … …) are used only to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed 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 application. 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 may be combined with other embodiments.

The present application will be described in detail with reference to the drawings and examples.

Referring to fig. 1, fig. 1 is a schematic view 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, shredded strips, strips or flakes of one or more plant leaves such as tobacco, vanilla leaves, tea leaves, mint leaves; alternatively, the solid matrix may contain additional volatile flavour compounds to be released when the matrix is heated. Of course, the aerosol-generating article may also be a liquid substrate or a 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 according to an embodiment of the present 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 atomising the aerosol-generating article 2 when energised 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 application; FIG. 4 is a perspective view of a heating assembly provided in accordance with an embodiment of the present application; in a first embodiment, a heating assembly 10 is provided. The heating assembly 10 comprises a containment structure 11, at least one heating film 12 and a power supply assembly 13.

As shown in fig. 4, the power supply assembly 13 includes a first electrode 131 and a second electrode 132; the two ends of at least one heating film 12 are respectively electrically connected with the first electrode 131 and the second electrode 132, so as to simultaneously supply power to the at least one heating film 12 through the first electrode 131 and the second electrode 132 for single-end heating, that is, the at least one heating film 12 shares the first electrode 131 and the second electrode 132 for power supply, and the power supply of the at least one heating film 12 is the same.

The first electrode 131 and the second electrode 132 of the power supply assembly 13 may be located at the same end of the receiving structure 11 and respectively extend along the circumferential direction of the receiving structure 11. In a specific embodiment, the first electrode 131 and the second electrode 132 may be specifically located at the end of the housing structure 11 facing away from the proximal opening; the first electrode 131 and the second electrode 132 may be made of a metal material having high conductivity, such as silver, gold, copper, or an alloy containing gold, silver, and copper.

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 receiving cavity 110 and a proximal opening and a distal opening communicating with the receiving cavity 110, and the proximal opening and the distal opening are oppositely arranged along a length direction C of the base 111. 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 accommodation chamber 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-screening, 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.

With reference to fig. 3 to 5, fig. 5 is a disassembled view of fig. 4; the heating film 12 is linearly covered on the housing structure 11. In an embodiment, at least one heating film 12 is disposed on a side of the substrate 111 facing away from the radiation layer 112, and is disposed on a surface of the receiving structure 11 at intervals along a circumferential direction of the receiving structure 11, for generating heat when energized to heat the radiation layer 112, so that the radiation layer 112 is heated to radiate infrared rays. Specifically, the heating film 12 uses a resistive material that releases joule heat by being energized, such as a thick film printed resistive layer, a thin film printed resistive layer, a nano resistive layer, or the like.

As shown in fig. 3, when the substrate 111 is an insulating substrate 111, the heating film 12 is specifically disposed on a surface of the substrate 111 facing away from the radiation layer 112, and heat generated by the heating film 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, it is preferable that the substrate 111 is made of a metal material, such as stainless steel, as shown in fig. 6, and fig. 6 is a transverse sectional view of a heating assembly provided in an embodiment of the present application; 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. 7, fig. 7 is a schematic view of an aerosol-generating article contained within a containment structure according to an embodiment of the present application; when the aerosol-generating article 2 is received in the receiving cavity 110, the aerosol-generating article 2 is in direct contact with an inner surface of the side wall of the receiving structure 11 (e.g., the surface of the radiation 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. 8, fig. 8 is a schematic view of an aerosol-generating article contained within a containment structure 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 to prevent the radiation layer 112 from being scratched or scratched by the aerosol-generating article 2. 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 may 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. 9, fig. 9 is a schematic view of the heating film and the power supply assembly shown in fig. 4 being unfolded in a circumferential direction of the housing structure; in one embodiment, the number of the heating films 12 is one, one heating film 12 includes a plurality of heating wires 121 connected in parallel, at least two heating wires 121 of the plurality of heating wires 121 are connected in parallel; each heating wire 121 is in the shape of a linear strip; at least a portion of each heating wire 121 extends along the length direction C of the receiving structure 11. It can be understood that the heating wire 121 has a length dimension that is much greater than a width dimension.

Specifically, as shown in fig. 9, at least some of the heating wires 121 among the plurality of heating wires 121 are curved. The curve may be an S-shaped curve. Alternatively, as shown in fig. 10, fig. 10 is a schematic view of a heating film 12 and a power supply assembly 13 provided in another embodiment of the present application, which are spread along a circumferential direction of the housing structure 11; the curve may also be a U-shaped curve. Of course, in other embodiments, each heating wire 121 may also be any other irregularly bent line, such as a combination of S-shaped and U-shaped curves; this is not a limitation of the present application.

In an embodiment, as shown in fig. 9, the plurality of heating wires 121 respectively extend along the length direction C of the receiving structure 11, and a first end of a part of the heating wires 121 (hereinafter, referred to as a first group of heating wires) is electrically connected to the first electrode 131, and a second end of each heating wire 121 in the first group of heating wires is electrically connected to a second end of the other part of the heating wires 121 (hereinafter, referred to as a second group of heating wires); the first end of each heater wire 121 in the second group of heater wires is electrically connected to the second electrode 132; such that the plurality of heater wires 121 in the first group of heater wires are connected together in parallel, the plurality of heater wires 121 in the second group of heater wires are connected together in parallel, and then the first group of heater wires and the second group of heater wires are connected together in series.

Specifically, each heating wire 121 is an S-shaped curve extending along the length direction C of the accommodating structure 11; of course, a U-shaped curve is also possible. The plurality of heating lines 121 may be symmetrically distributed along the central axis L of the heating film 12; and two adjacent heating wires 121 are symmetrically distributed along the central axis of the two heating wires 121. The central axis L is the central axis of the heating film 12 after being unfolded in the width direction D.

Specifically, the heating assembly 10 further includes a first electrical connection portion 122, a second electrical connection portion 123, and a third electrical connection portion 124. The first electrical connection portion 122 is specifically located at an end of the accommodating structure 11 close to the proximal opening, and the second ends of the plurality of heating wires 121 are electrically connected to the first electrical connection portion 122, so that the second ends of the plurality of heating wires 121 are electrically connected through the first electrical connection portion 122, and the first group of heating wires and the second group of heating wires are connected in series.

First ends of a plurality of heating wires 121 in the first group of heating wires are electrically connected with the second electrical connection portions 123, respectively, to be electrically connected with the first electrodes 131 through the second electrical connection portions 123. First ends of a plurality of heating wires 121 in the second group of heating wires are electrically connected with the third electrical connection portion 124 respectively so as to be electrically connected with the second electrode 132 through the third electrical connection portion 124; thereby supplying power to the heating film 12 through the first electrode 131 and the second electrode 132.

Specifically, the heating film 12 includes four heating wires 121, i.e., a first heating wire, a second heating wire, a third heating wire, and a fourth heating wire. Wherein the first heating wire and the second heating wire are connected in parallel between the first electrode 131 and the first electrical connection portion 122; the third heater wire and the fourth heater wire are connected in parallel between the second electrode 132 and the first electrical connection 122. That is, the four heater wires 121 in the heater film 12 are connected in parallel two by two and then connected in series.

In this particular embodiment, the at least one heating film 12 is configured to have a different watt density across the midpoint of the length direction C of the housing structure 11. That is, the heat generated by the at least one heater film 12 does not cause the high temperature region in the housing cavity 110 of the housing structure 11 to be located in the center region of the housing cavity 110 in the longitudinal direction C. This allows the temperature field of the containment structure 11 to be designed as desired, facilitating the design of other asymmetric high temperature zone locations.

Specifically, as shown in fig. 4 to 9, a plane M perpendicular to the length direction C of the housing structure 11 and passing through the midpoint divides the surface of the housing structure 11 into a first area a and a second area B; the second region B is located on the side of the first region a facing away from the proximal opening. A portion of each heating wire 121 of each heating film 12 is located in the first region a, and the remaining portion is located in the second region B; and the resistance density per unit area of the at least one heating film 12 in the first region a is different from the resistance density per unit area of the at least one heating film 12 in the second region B. In this way, after at least one heating film 12 is energized, the heating power of the first region a and the heating power of the second region B of the housing structure 11 are different from each other, and two regions having different temperatures can be formed in the first region a and the second region B of the housing structure 11. Meanwhile, the midline plane M is taken as a dividing line of the first area a and the second area B, so that the formed high-temperature area can be ensured to be offset from the midpoint of the length direction C of the accommodating cavity 110, and the design of other asymmetric high-temperature area positions is facilitated.

Specifically, in order to increase the heating rate of the heating assembly 10 near the proximal opening, the aerosol generation speed is increased; the resistance density per unit area of the at least one heating film 12 in the first region a may be made larger than the resistance density per unit area of the plurality of heating films 12 in the second region B; in this way, since the heating films 12 in the first region a and the second region B are connected in series as a whole, when at least one heating film 12 is energized, the watt density of the region having a high resistance density is high, that is, the heating watt density of the first region a is higher than that of the second region B; correspondingly, the overlapping area of the inner surface of the base 111 of the first area a and the heating film 12 is also larger than the overlapping area of the radiation layer 112 of the second area B and the heating film 12, and the radiation layer 112 corresponding to the first area a has a higher temperature than the radiation layer 112 corresponding to the second area B, and radiates more infrared rays, so as to obtain the expected design effect that the temperature of the first area a of the accommodating structure 11 is higher than the temperature of the second area B, that is, the expected design effect that the high-temperature area of the heating element 10 is located in the first area a; the efficiency of partial atomisation of the aerosol-generating article 2 corresponding to the first region a is effectively increased and the rate of aerosol generation is increased.

In a specific embodiment, in conjunction with fig. 9, each heater wire 121 in at least one heater film 12 is the same in material and thickness; if it is desired to design different temperature regions, the widths of the heating portions in the different regions and the length of at least one heating film 12 included in each region in the longitudinal direction C of the housing structure 11 are controlled to control the resistance densities in the different regions, thereby achieving the effect of designing the different temperature regions. For example, the width of each heating line 121 of the at least one heating film 12 is the same, so that the length of the portion of the at least one heating film 12 located in the first region a is smaller than the length of the portion located in the second region B in the longitudinal direction C of the housing structure 11, and the cross-sectional area is different, so that the resistance density per unit area of the at least one heating film 12 in the first region a is greater than the resistance density per unit area of the at least one heating film 12 in the second region B. Here, the width of the heating wire 121 refers to a dimension of the heating wire 121 in the width direction D.

In another embodiment, referring to fig. 11-13, fig. 11 is a perspective view of a heating assembly provided in another embodiment of the present application; FIG. 12 is a disassembled view of FIG. 11; FIG. 13 is a schematic view of the heating film and power supply assembly of FIG. 11 deployed in a circumferential direction of the containment structure; the difference from the embodiments corresponding to fig. 4-10 is that: both ends of each heating wire 121 are electrically connected to the first electrode 131 and the second electrode 132, respectively.

In this embodiment, as shown in fig. 13, each of the heating wires 121 includes a first portion 125, a second portion 126, and a third portion 127 connected in sequence. The first portion 125 and the third portion 127 extend along the length direction C of the receiving structure 11, and are electrically connected to the first electrode 131 and the second electrode 132, respectively; the second portion 126 extends in the circumferential direction of the housing structure 11. Wherein the junction of the first portion 125 and the second portion 126 forms a corner, which may be a chamfer; the junction of the second portion 126 and the third portion 127 also forms a corner, which may also be a chamfer.

Specifically, the first portion 125 of each heating wire 121 extends from the second area B to the first area a, and the second portion 126 of each heating wire 121 is located in the first area a of the receiving structure 11; the third portion 127 of each heating wire 121 extends from the first region a to the second region B to be in contact with and electrically connected to the second electrode 132.

Specifically, referring to fig. 12 and 13, the heating film 12 may include a first heating wire 121a and a second heating wire 121b connected in parallel. Wherein the first portion 125 of the first heating wire 121a may be curved; such as a U-shaped curve. The second portion 126 and the third portion 127 of the first heating wire 121a are in a straight line. The first portion 125, the second portion 126, and the third portion 127 of the second heating wire 121b are all straight. Specifically, the length of the second heating wire 121b is greater than that of the first heating wire 121a, and the second heating wire 121b surrounds the periphery of the first heating wire 121 a.

In this embodiment, both ends of each heater wire 121 may be directly connected to the first electrode 131 or the second electrode 132, i.e., without the second electrical connection 123 or/and the third electrical connection 124.

Of course, in other embodiments, the resistance density of the corresponding region may also be controlled by controlling the material or thickness of each heating wire 121 of the corresponding region, which is not limited in the present application as long as the resistance density of the portion of the at least one heating film 12 located in the first region a is different from the resistance density of the portion of the at least one heating film 12 located in the second region B.

It will be understood by those skilled in the art that the receiving structure 11 may also be divided into a plurality of regions by using another plane or a plurality of parallel planes perpendicular to the longitudinal direction C of the receiving structure as a dividing line. The widths of the portions of the heating film 12 where at least two of the plurality of regions are located along the length direction C of the housing structure 11 are different to form regions of different temperatures correspondingly; among the plurality of regions having different temperatures, the high-temperature region is offset from the midpoint of the housing structure 11 in the longitudinal direction C.

The heating element 10 that this embodiment provided, through infrared radiation heating aerosol generation goods 2, compare in resistance heating or electromagnetic heating's scheme, because the infrared ray has certain penetrability, do not need the medium, heating efficiency is higher, can effectively improve aerosol generation goods 2's preheating efficiency, and can effectively reduce aerosol generation goods 2 inside and outside temperature difference, thereby it is more even to the toast of aerosol generation goods 2, avoid appearing local high temperature and lead to aerosol generation goods 2 by the problem of scorching. Meanwhile, by arranging at least one heating film 12 such that the high-temperature region generated in the housing cavity 110 of the housing structure 11 is offset from the midpoint of the longitudinal direction C of the housing cavity 110, it is possible to design a temperature field as desired, facilitating the design of other asymmetric high-temperature region positions. In addition, the resistance density of the at least one heating film 12 in different regions is controlled by controlling the lengths of the plurality of heating lines 121 of the at least one heating film 12 in different regions, thereby controlling the watt density of the heating film 12 contained in each of the different regions; thus, after at least one heating film 12 is electrified, the heating powers of at least two heating regions can be different, so that a plurality of regions with different temperatures can be formed; the position of the high-temperature region of the housing structure 11 suitable for atomization of the aerosol-generating article 2 is purposefully designed to increase the aerosol generation rate. In addition, the resistance density of the portion of the at least one heating film 12 located in the first area a is greater than the resistance density of the portion located in the second area B, so that the temperature of the first area a of the accommodating structure 11 is higher than that of the second area B, thereby effectively improving the atomization efficiency of the first area a and accelerating the aerosol generation speed.

In a second embodiment, referring to fig. 14, fig. 14 is a transverse cross-sectional view of a heating assembly provided in a second embodiment of the present application; 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. 14, 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 on a side away from the base 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. 15, fig. 15 is a transverse cross-sectional view of a heating element according to another embodiment of the present application; 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, with reference to fig. 16, fig. 16 is a transverse cross-sectional view of a heating assembly provided in a third embodiment of the present application; 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 base 111 itself is heated to radiate infrared rays, and no infrared layer is added to the surface of the base 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 and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present 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;

at least one heating film which is arranged on the containing structure in a linear shape and is used for heating the containing structure when electrified; wherein at least a portion of each heating film extends along the length direction of the accommodating structure;

a power supply assembly including a first electrode and a second electrode; and two ends of each heating film are respectively and electrically connected with the first electrode and the second electrode so as to supply power to the at least one heating film.

2. The heating assembly of claim 1,

the heating film comprises a plurality of heating wires, wherein at least two heating wires in the plurality of heating wires are connected together in parallel; and at least part of each heating wire extends along the length direction of the accommodating structure.

3. The heating assembly of claim 2, wherein at least some of the heating wires of the plurality of heating wires are curvilinear.

4. The heating assembly of claim 3, wherein the curve is a U-shaped curve or an S-shaped curve.

5. The heating assembly of claim 3,

the heating wires extend along the length direction of the accommodating structure respectively, and the first ends of part of the heating wires are electrically connected with the first electrodes, and the second ends of the part of the heating wires are electrically connected with the second ends of the rest of the heating wires; the first end of the rest part of the heating wire is electrically connected with the second electrode.

6. The heating assembly of claim 5,

the heating film further includes: a first electrical connection portion extending in a circumferential direction of the housing structure; the second end of each heating wire is electrically connected with the first electric connection part respectively.

7. The heating assembly of claim 6,

the heating film further includes:

a second electrical connection portion; first ends of a part of the heating wires in the plurality of heating wires are respectively electrically connected with the second electric connection parts so as to be electrically connected with the first electrodes through the second electric connection parts; and/or the presence of a gas in the gas,

8. The heating assembly of claim 7,

the heating film comprises a first heating wire, a second heating wire, a third heating wire and a fourth heating wire; the first heater wire and the second heater wire are connected in parallel between the first electrode and the first electrical connection; the third heater wire and the fourth heater wire are connected in parallel between the second electrode and the first electrical connection portion.

9. The heating assembly of claim 8, wherein each of the heating wires is a U-shaped curve.

10. The heating assembly as claimed in claim 9, wherein the plurality of heating lines are symmetrically distributed along a central axis of a width direction of the heating film; and two adjacent heating wires are symmetrically distributed along the central axis where the heating wires are positioned.

11. The heating assembly of claim 3,

12. The heating assembly of claim 11,

13. The heating assembly of claim 11,

the heating film comprises a first heating wire and a second heating wire which are connected in parallel;

the first portion, the second portion, and the third portion of the second heating wire are all straight.

14. The heating assembly of claim 13,

the length of the second heating wire is greater than that of the first heating wire, and the second heating wire surrounds the periphery of the first heating wire.

15. The heating assembly of any of claims 1-14, wherein the first electrode and the second electrode are located at a same end of the containment structure.

16. A heating assembly according to any of claims 1-15,

the at least one heating film is configured to have a different watt density on both sides of a midpoint in a length direction of the housing structure.

17. The heating assembly of claim 16,

a plane perpendicular to the length direction of the accommodating structure and passing through the midpoint divides the surface of the accommodating structure into a first area and a second area; the second region is located on a side of the first region facing away from the proximal opening;

18. An aerosol-generating device, comprising:

a heating assembly as claimed in any one of claims 1 to 17;

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