CN221059596U - Heating element and aerosol generating device - Google Patents
Heating element and aerosol generating device Download PDFInfo
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- CN221059596U CN221059596U CN202322744884.9U CN202322744884U CN221059596U CN 221059596 U CN221059596 U CN 221059596U CN 202322744884 U CN202322744884 U CN 202322744884U CN 221059596 U CN221059596 U CN 221059596U
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- Resistance Heating (AREA)
Abstract
The embodiment of the application relates to the technical field of aerosol generating devices, and discloses a heating assembly and an aerosol generating device. The heating assembly comprises a heating element comprising an integrally formed first heating portion having a cavity therein at least partially for receiving an aerosol-generating article, the cavity being open at the top for the entry of the aerosol-generating article, and a second heating portion disposed facing the cavity and defining at least part of the boundary of the bottom of the cavity; at least a partial region of the heating element is a heating zone configured to generate heat when electrically conductive, at least a portion of the first heating portion and at least a portion of the second heating portion being a constituent part of the heating zone or being within the coverage of the heating zone. Through the structure, the heating element formed integrally can effectively heat the aerosol-generating product and uniformly heat the air entering from the bottom of the heating element, so that the suction experience of a user for sucking aerosol is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of aerosol generating devices, in particular to a heating component and an aerosol generating device.
Background
The aerosol-generating device is for heating an aerosol-generating article to generate an aerosol for inhalation by a user. In existing aerosol-generating devices, the heating component is typically a heating tube, and the aerosol-generating article may be received in the heating tube so as to be heated by the heating tube. However, when a user sucks, external cold air enters the aerosol-forming substrate part from the bottom of the cigarette, the temperature of the aerosol-forming substrate is rapidly reduced, so that the aerosol-forming substrate is influenced to generate aerosol, the amount of the aerosol is small, and the sucking experience of the user is influenced.
Disclosure of utility model
The technical problem to be solved by the embodiment of the application is to provide the heating assembly and the aerosol generating device, which can heat the bottom of the aerosol generating product from the circumferential direction while heating the aerosol generating product, so that the suction experience of a user for sucking aerosol is improved.
The embodiment of the application adopts a technical scheme that: there is provided a heating assembly comprising a heating element comprising integrally formed first and second heating portions, the first heating portion having a cavity therein at least part of which is for receiving an aerosol-generating article, the cavity being open at the top for ingress of the aerosol-generating article, the second heating portion being disposed facing the cavity and defining at least part of a boundary of the cavity bottom; at least a partial region of the heating element is a heating zone configured to generate heat when electrically conductive, at least a part of the first heating portion and at least a part of the second heating portion being part of or within the coverage of the heating zone.
In some embodiments, the heating assembly includes a plurality of electrodes, the first heating portion and the second heating portion are each electrically connected to one or more of the electrodes, and each of the first heating portion and the second heating portion is configured to generate joule heat when in electrical communication with the electrode.
In some embodiments, the first heating portion and the second heating portion comprise a conductive ceramic or graphite alloy.
In some embodiments, the heating assembly includes a heat generating layer capable of generating heat when electrically conducted, a portion of the heat generating layer being bonded to the first heating portion, a portion of the heat generating layer being bonded to the second heating portion, and a region of the heat generating layer constituting the heating region.
In some embodiments, the heating assembly includes a first electrode and a second electrode bonded to the heating element, and at least a portion of the heating zone is formed between the first electrode and the second electrode.
In some embodiments, the first electrode is circumferentially disposed about the periphery of the first heating portion, and the second electrode is circumferentially disposed about the periphery of the second heating portion; or the first electrode and the second electrode each extend in an axial direction of the heating element.
In some embodiments, the heating zones comprise first and second heating zones spaced apart from each other, at least part of the first heating zone being a constituent of the first heating zone or within a coverage area of the first heating zone, at least part of the second heating zone being a constituent of the second heating zone or within a coverage area of the second heating zone.
In some embodiments, the heating assembly includes a first electrode, a second electrode, and a third electrode, each circumferentially disposed about a periphery of the heating element; the first heating region is formed between the first electrode and the second electrode, the second heating region is formed between the second electrode and the third electrode, and the first heating region and the second heating region are spaced apart by the second electrode.
In some embodiments, the second electrode is disposed on the first heating portion and is disposed critically with the second heating portion.
In some embodiments, the heating assembly includes a first electrode, a second electrode, and a third electrode, each extending along an axial direction of the heating element, the second electrode and the third electrode being disposed on a same line and spaced apart from each other, the first electrode being disposed offset from the second electrode and the third electrode simultaneously in a circumferential direction of the heating element; the first heating region is formed between the first electrode and the second electrode, and the second heating region is formed between the first electrode and the third electrode.
In some embodiments, the axial spacing between the first heating zone and the second heating zone is at least 2 millimeters.
In some embodiments, a first air passage is provided on the second heating portion, the first air passage allowing air to enter the cavity.
In some embodiments, the first air passage extends for a length greater than 2 millimeters such that air flowing through the first air passage is heated by the second heating portion to a hot air flow.
In some embodiments, the second heating part is further provided with a second air passage, and the second air passage intersects with the first air passage and is simultaneously communicated with a plurality of first air passages.
The embodiment of the application adopts another technical scheme that: an aerosol-generating device is provided comprising the heating assembly described above, and further comprising a power source that provides power for heating the heating region.
The heating assembly comprises a heating element, wherein the heating element comprises a first heating part and a second heating part which are integrally formed, a cavity is formed in the first heating part, at least part of the cavity is used for receiving aerosol-generating products, the top of the cavity is opened for the aerosol-generating products to enter, and the second heating part is arranged facing the cavity and defines at least part of the boundary of the bottom of the cavity; at least a partial region of the heating element is a heating zone configured to generate heat when electrically conductive, at least a portion of the first heating portion and at least a portion of the second heating portion being a constituent part of the heating zone or being within the coverage of the heating zone. Through the structure, on one hand, the aerosol generating product can be heated from the circumferential direction and simultaneously heat can be provided for the bottom of the heated aerosol generating product, so that the aerosol quantity generated by the aerosol generating product can be obviously increased, the suction experience of a user for sucking aerosol is improved, on the other hand, the manufacturing process of the heating component can be simplified, and the production efficiency of the heating component is improved and the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic view of two electrodes circumferentially surrounding a heating assembly according to a first embodiment of the present application;
FIG. 2 is a cross-sectional view of a first embodiment of a heater assembly of the present application with two electrodes circumferentially surrounding each other;
FIG. 3 is a schematic view of two electrodes axially extending in a heating assembly according to a second embodiment of the present application;
FIG. 4 is another schematic illustration of the axial extension of two electrodes in a heating assembly according to a second embodiment of the application;
FIG. 5 is a schematic view of the circumferential wrapping of three electrodes in a heating assembly according to a third embodiment of the present application;
FIG. 6 is a cross-sectional view of a third embodiment of a heating assembly of the present application with three electrodes circumferentially surrounding the heating assembly;
FIG. 7 is a schematic view of the axial extension of three electrodes in a heating assembly according to a fourth embodiment of the application;
FIG. 8 is another schematic view of the axial extension of three electrodes in a heating assembly according to a fourth embodiment of the application;
FIG. 9 is a schematic view of a heating element having a second air passage in a heating assembly according to an embodiment of the present application.
Detailed Description
In order that the application may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
In addition, the technical features mentioned in the different embodiments of the application described below can be combined with one another as long as they do not conflict with one another.
Referring to fig. 1, the present application provides a heating assembly 1 adapted to an aerosol-generating device, the heating assembly 1 being for receiving at least part of an aerosol-generating article, and the heating assembly 1 being capable of generating heat when electrically conductive to heat a substrate of the aerosol-generating article to generate an aerosol.
Referring to fig. 1 and 2, the heating assembly 1 comprises a heating element 10, wherein the heating element 10 comprises a first heating portion 11 and a second heating portion 12 integrally formed, the first heating portion 11 having a cavity 111 therein, at least part of the cavity 111 being for receiving an aerosol-generating article. The top of the cavity 111 is open for the entry of aerosol-generating article from the top of the cavity 111. The second heating portion 12 is disposed facing the cavity 111, and the second heating portion 12 defines at least a partial boundary of the bottom of the cavity 111. The first heating part 11 and the second heating part 12 are manufactured by adopting an integral molding process, so that the compactness of the combination of the first heating part 11 and the second heating part 12 can be increased, the heat resistance of the heat transfer between the first heating part 11 and the second heating part 12 can be obviously reduced, and compared with the combination of the first heating part 11 and the second heating part 12 by adopting a splicing or assembling process, the production efficiency of the heating assembly 1 can be improved, and the production cost can be reduced.
At least a partial region of the heating element 10 is a heating zone 13, the heating zone 13 being configured to generate heat when electrically conductive, the heat being capable of heating the aerosol-generating article by heat transfer or the heat heating the airflow to form a hot airflow which flows towards the aerosol-generating article to heat the aerosol-substrate to generate an aerosol. Wherein at least part of the first heating portion 11 and at least part of the second heating portion 12 are constituent parts of the heating region 13, or at least part of the first heating portion 11 and at least part of the second heating portion 12 are within the coverage of the heating region 13.
In some embodiments, the heating assembly 1 comprises a heat generating layer for electrical connection to an external power source, a portion of the heat generating layer being bonded to the outer peripheral surface of the first heating portion 11, a portion of the heat generating layer being disposed on the outer peripheral surface of the second heating portion 12, the heat generating layer being configured to generate heat upon electrical conduction such that the area covered by the heat generating layer forms the heating zone 13 on the heating element 10.
In this embodiment, the region where the heat generating layer is located constitutes the heating region 13 described above, and at least part of the first heating portion 11 and at least part of the second heating portion 12 are located within the coverage of the heat generating layer. Wherein the first heating portion 11 and the second heating portion 12 are supporting bodies of a heat generating layer, the first heating portion 11 and the second heating portion 12 are made of an insulating material or an insulating layer is provided between the first heating portion 11 and the second heating portion 12 and the heat generating layer, the heating element 1 mainly releases heat when electrically conducted through the heat generating layer, and the first heating portion 11 and the second heating portion 12 have an effect of conducting heat to an aerosol-generating article when the heat generating layer is provided on the outer peripheral surfaces of the first heating portion 11 and the second heating portion 12.
As some examples, the heat generating layer described above may be one or more of an infrared heat generating film, a resistive heat generating layer, or an electromagnetic heat generating layer. Of course, the number of heat generating layers may be one, and a single heat generating layer may be directly provided to cover the outer circumferential surface of the heating element 10 to form one heating zone 13. In other embodiments, the number of the heat generating layers may be two or more, and the two or more heat generating layers are respectively disposed on the outer peripheral surface of the heating element 10 to form two or more heat generating areas.
It should be noted that the aerosol-generating device is a device comprising a power source, which may be any suitable battery or cell.
The electromagnetic heating layer can generate eddy current in a changed magnetic field so as to generate heat; when the heating layer comprises an electromagnetic heating layer, the aerosol-generating device further comprises a magnetic field generator, the magnetic field generator is electrically connected with a power supply and can generate a variable magnetic field; when the power supply supplies power to the magnetic field generator, eddy currents are formed in the electromagnetic heating layer, so that the electromagnetic heating layer is electrically conducted and generates heat.
When the heating layer includes an infrared heating film and/or a resistance heating layer, the heating layer is electrically connected to a power supply, and the power supply supplies power to the heating layer so that the heating layer generates joule heat or releases infrared rays when the heating layer is electrically connected.
The heating assembly 1 further comprises a plurality of electrodes 20 based on the heat generating layer comprising an infrared heat generating film and/or a resistive heat generating layer, the infrared heat generating film and/or the resistive heat generating layer being electrically connected to one or more electrodes 20 to draw power from a power source via one or more electrodes 20.
In some embodiments, the heating assembly 1 comprises a plurality of electrodes 20, the first heating portion 11 and the second heating portion 12 being electrically connected to one or more of the electrodes 20, respectively, to draw power from a power source via one or more of the electrodes 20, wherein the first heating portion 11 and the second heating portion 12 are each configured to generate joule heat when in electrical conduction with the electrodes 20, in other words, the first heating portion 11 and the second heating portion 12 are themselves electrically conductive and are capable of releasing joule heat when in electrical conduction, i.e. the first heating portion 11 and the second heating portion 12 themselves comprise a resistive material.
Suitable resistive materials include, but are not limited to: semiconductors such as doped ceramics, conductive ceramics (e.g., molybdenum disilicide), carbon, graphite alloys, metals, metal alloys, and composites made from ceramic materials and metal materials. Such composite materials may include doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum, and platinum group metals. Examples of suitable metal alloys include stainless steel, constantan (Constantan), nickel-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminum-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys, and iron-containing alloys, as well as nickel, iron, cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.
In this embodiment, the heating zone 13 is partially constituted by the first heating portion 11, partially constituted by the second heating portion 12, or the heating zone 13 includes at least a part of the first heating portion 11 and at least a part of the second heating portion 12.
In some embodiments, referring to fig. 1-4, the electrodes 20 have two in total, a first electrode 21 and a second electrode 22, respectively, the first electrode 21 and the second electrode 22 may be combined on the heating element 10 or the heat generating layer, and at least part of the heating region 13 is formed on the heating element 10 or the heat generating layer between the first electrode 21 and the second electrode 22. The first electrode 21 and the second electrode 22 may be electrically connected to output terminals having opposite polarities of the power source, respectively, so that the first electrode 21 and the second electrode 22 have opposite electrode properties, for example, when the first electrode 21 is a positive electrode, the second polarity is a negative electrode, or when the first electrode 21 is a negative electrode, the second polarity is a positive electrode. When the first electrode 21 and the second electrode 22 are electrically connected to a power source, a current is passed through the heating element 10 or the heat generating layer between the first electrode 21 and the second electrode 22, so that the heating element 10 or the heat generating layer between the first electrode 21 and the second electrode 22 generates heat.
As an example, referring to fig. 1 and 2, the first electrode 21 is circumferentially disposed around the periphery of the first heating portion 11, including but not limited to: the first electrode 21 is bonded on the first heating portion 11, or the first electrode 21 is bonded on the heat generating layer; the second electrode 22 is circumferentially disposed around the periphery of the second heating portion 12, including but not limited to: the second electrode 22 is bonded to the second heating portion 12, or the second electrode 22 is bonded to the heat generating layer. Thus, the direction of the current flowing through the heating zone 13 is generally along the axial direction of the heating element 10.
In order to make the area of the heating zone 13 between the first electrode 21 and the second electrode 22 as large as possible, the first electrode 21 may therefore be as close as possible to the end of the first heating portion 11 facing away from the second heating portion 12, and the second electrode 22 may be as close as possible to the end of the second heating portion 12 facing away from the first heating portion 11.
As another example, referring to fig. 3 and 4, the first electrode 21 and the second electrode 22 may each extend along an axial direction of the heating element 10, and more specifically, the first electrode 21 and the second electrode 22 may each extend along an outer circumferential surface of the heating element 10, including but not limited to: the first electrode 21 and the second electrode 22 are bonded to the heating element 10 or to a heat generating layer. That is, the first electrode 21 is disposed at the local periphery of the first heating part 11 and the local periphery of the second heating part 12 at the same time, the second electrode 22 is disposed at the local periphery of the first heating part 11 and the local periphery of the second heating part 12 at the same time, and the heating region 13 may be divided by the first electrode 21 and the second electrode 22 into two small heating regions having a smaller area, which may be located at opposite sides of the first electrode 21, respectively, while being located at opposite sides of the second electrode 22, respectively, and the direction of the current flowing through any of the small heating regions is substantially along the circumferential direction of the heating element 10.
In order to make the heat of the small heating regions on the opposite sides of the first electrode 21 in the circumferential direction uniform, the first electrode 21 and the second electrode 22 may be symmetrically disposed on the outer circumferential surface of the heating element 10 so that the areas of the two small heating regions are equivalent.
In some embodiments, referring to fig. 5-8, the heating area 13 includes at least two heating areas, namely, a first heating area 131 and a second heating area 132, where the first heating area 131 and the second heating area 132 are arranged in the axial direction of the heating element 10, at least part of the first heating portion 11 is a constituent part of the first heating area 131 or is within the coverage area of the first heating area 131, and at least part of the second heating portion 12 is a constituent part of the second heating area 132 or is within the coverage area of the second heating area 132. The first heating zone 131 is mainly used for heating the aerosol-generating article from the peripheral side upwards and the second heating zone 132 is mainly used for providing heat to the bottom of the aerosol-generating article.
In order to prevent overheating of the bottom of the aerosol-generating article, the first heating zone 131 and the second heating zone 132 may be spaced apart from each other in the axial direction of the heating element 10, so that a blank area is formed on the heat-generating layer or on the self-heating element 10, which blank area may have an extension width in the axial direction of the heating element 10 of at least 2mm. The temperature of the blank region is lower than the temperatures of the first heating region 131 and the second heating region 132 in the heat generating state, and the blank region may be warmed up by heat generation, but the heat generation efficiency is lower than that of the first heating region 131 and the second heating region 132; the blank area may be warmed by absorbing heat released from the first heating area 131 and/or the second heating area 132. If an electrode is provided between the first heating region 131 and the second heating region 132, the electrode is bonded to the heat generating layer or the heating element 10, and the resistivity of the electrode is far lower than that of the heat generating layer or the heating element 10 that generates heat by itself, so that the blank region itself can generate less heat or generate no heat by itself when conducting electricity.
It should be noted that the blank area is optional and not necessary.
Based on the heating zone 13 comprising at least a first heating zone 131 and a second heating zone 132, the electrode 20 has at least three, i.e. the electrode 20 comprises at least a first electrode 21, a second electrode 22 and a third electrode 23. The first electrode 21, the second electrode 22, and the third electrode 23 may be provided on the heating element 10 or the heat generating layer in combination, and electrically connected to a power source, respectively. By providing at least three electrodes, the heating zone 13 of the heating element 10 may be divided into at least two heating zones, namely a first heating zone 131 and a second heating zone 132, so as to meet different heating requirements and realize different heating functions, for example, the first heating zone 131 and the second heating zone 132 are controlled to heat simultaneously, or the first heating zone 131 and the second heating zone 132 are controlled to heat sequentially, or the first heating zone 131 and the second heating zone 132 are controlled to heat first and then heat simultaneously, or the first heating zone 131 and the second heating zone 132 are controlled to heat first and then heat first and so on.
As an example, referring to fig. 5 and 6, the first electrode 21, the second electrode 22 and the third electrode 23 are sequentially disposed at intervals along the axial direction of the heating element 10, and are each disposed circumferentially around the outer circumferential surface of the heating element 10 such that a first heating region 131 is formed between the first electrode 21 and the second electrode 22, and a second heating region 132 is formed between the second electrode 22 and the third electrode 23, i.e., the first heating region 131 and the second heating region 132 are disposed at intervals through the second electrode 22.
Based on this example, the heating assembly 1 has a variety of connections and control schemes.
Scheme one: one output end of the power supply is electrically connected to the second electrode 22 and the third electrode 23 at the same time, and the other output end of the power supply with opposite polarity is connected to the first electrode 21, so that the first electrode 21 forms a common electrode of the second electrode 22 and the third electrode 23, for example, the first electrode 21 is a positive electrode, and the second electrode 22 and the third electrode 23 are both negative electrodes. To avoid short-circuiting, the second electrode 22 and the third electrode 23 are alternatively electrically connected to a power source. When the second electrode 22 is electrically connected to the power source, the first heating region 131 and the second heating region 132 between the first electrode 21 and the third electrode 23 are both in the conductive loop, and at this time, the first heating region 131 and the second heating region 132 both generate heat.
The second electrode 22 may be controlled to be electrically conductive with the power supply prior to the third electrode 23. Or the second electrode 22 may be controlled to be electrically connected to the power supply after the third electrode 23.
Scheme II: one output end of the power supply is electrically connected to the first electrode 21 and the third electrode 23 at the same time, and the other output end of the power supply with opposite polarity is connected to the second electrode 22, so that the second electrode 22 forms a common electrode of the first electrode 21 and the third electrode 23, for example, the second electrode 22 is a positive electrode, the first electrode 22 and the third electrode 23 are both negative electrodes, or for example, the second electrode 22 is a negative electrode, and the first electrode 22 and the third electrode 23 are both positive electrodes. The first electrode 21 and the third electrode 23 may be electrically connected to the power supply at the same time, or alternatively may be electrically connected to the power supply, or may be electrically connected to the power supply sequentially, so that the first heating region 131 and the second heating region 132 generate heat at the same time, or alternatively generate heat, or generate heat sequentially, or the like.
Other schemes may also be included, not specifically recited herein.
As an example, referring to fig. 6, the first electrode 21 and the second electrode 22 are disposed at the periphery of the first heating portion 11, and the third electrode 23 is disposed at the periphery of the second heating portion 12. The bottom edge 221 of the second electrode 22 is disposed in critical contact with the second heating portion 12, where the bottom edge 221 of the second electrode 22 is a side edge near the third electrode 23. In some embodiments, the second electrode 22 extends a width greater than 2 millimeters in the axial direction of the heating element 10 such that the axial separation between the first heating zone 131 and the second heating zone 132 is at least 2 millimeters. By the above arrangement, the side wall of the cavity 111 near the bottom can be prevented from being too high in temperature, resulting in burning the end of the aerosol-generating article.
As an example, referring to fig. 7 and 8, the first electrode 21, the second electrode 22 and the third electrode 23 are all disposed along the axial direction of the heating element 10, and the first electrode 21 and the second electrode 22, the first electrode 21 and the third electrode 23 are circumferentially spaced on the heating layer or the heating element 10, i.e., the first electrode 21 is disposed at the same time with the second electrode 22 and the third electrode 23 being staggered in the circumferential direction of the heating element 10, such that a first heating region 131 is formed between the first electrode 21 and the second electrode 22, and a second heating region 132 is formed between the first electrode 21 and the third electrode 23.
The second electrode 22 and the third electrode 23 are disconnected in the axial direction of the heating element 10 so as to be spaced apart from each other, so that the first heating region 131 and the second heating region 132 are spaced apart from each other in the axial direction of the heating element 10, and a blank region is formed between the second electrode 22 and the third electrode 23.
As an example, referring to fig. 8, the second electrode 22 and the third electrode 23 are disposed on the same line, the axial space between the second electrode 22 and the third electrode 23 is at least 2 mm, and the axial space between the first heating region 131 and the second heating region 132 is at least 2 mm.
In some embodiments, referring to fig. 9, the second heating portion 12 is provided with a first air passage 121, the first air passage 121 communicates the outside of the heating element 10 with the cavity 111, the first air passage 121 allows outside air to enter the cavity 111, and air enters the aerosol-generating article through the first air passage 121 provided on the second heating portion 12 when the aerosol-generating article is sucked. Wherein the first air passage 121 may have one or more.
As an example, the second heating portion 12 is used to support the bottom of the aerosol-generating article and allow air to enter the bottom of the aerosol-generating article while heating the bottom of the aerosol-generating article mainly by means of heat transfer. In this example, the second heating part 12 may have a smaller thickness in the axial direction of the heating element 10, which may be equal to the wall thickness of the first heating part 11 in the radial direction of the heating element 10, or which may be less than or equal to 2 mm, so that the first air passage 121 may have a smaller extension length.
As an example, the first air passage 121 has a larger extension length, which may be greater than 2mm, for example, may be about 5 mm, so that air, when flowing through the first air passage 121, is able to be heated by the hot air flow formed by the second heating portion 12, so that at least part of the heat generated by the second heating portion 12 may be released to the aerosol-generating article by the hot air flow. Based on this, the thickness of the second heating part 12 in the axial direction of the heating element 10 may be made greater than 2mm, for example, may be about 5 mm, to ensure sufficient heating of the air flowing through the first air passage 121.
In order to ensure uniformity and sufficiency of the air flowing through the second heating portion 12, the first air passages 121 may have a plurality, and the aperture of each first air passage 121 may be less than or equal to 1mm, for example, may be greater than 0.6 mm.
As an example, the second heating part 12 is further provided with a second air passage 122, the second air passage 122 crosses the first air passage 121, and the second air passage 122 is simultaneously communicated with a plurality of first air passages 121, the second air passage 122 is also used for air circulation, and the design that the first air passage 121 crosses the second air passage 122 can cause convection of air flow in the second heating part 12, thereby enabling the air to be heated more fully and uniformly.
The present embodiment also provides an aerosol-generating device embodiment comprising a power supply and the heating assembly 1 described above, wherein the power supply provides power for the heating of the heating zone 13. The structure and function of the heating assembly 1 can be referred to the above embodiments, and will not be described herein.
The heating assembly 1 according to the embodiment of the application comprises a heating element 10, the heating element 10 comprising a first heating portion 11 and a second heating portion 12 integrally formed, the first heating portion 11 having a cavity 111 therein, at least part of the cavity 111 being for receiving an aerosol-generating article, the top of the cavity 111 being open for the entry of the aerosol-generating article, the second heating portion 12 being arranged facing the cavity 111 and defining at least part of the boundary of the bottom of the cavity 111; at least a partial region of the heating element 10 is a heating zone 13, the heating zone 13 being configured to generate heat when electrically conductive, at least a part of the first heating portion 11 and at least a part of the second heating portion 12 being part of the heating zone 13 or being within the coverage of the heating zone 13. Through the structure, on one hand, the aerosol generating product can be heated from the circumferential direction and simultaneously heat can be provided for the bottom of the heated aerosol generating product, so that the aerosol quantity generated by the aerosol generating product can be obviously increased, the suction experience of a user for sucking aerosol is improved, on the other hand, the manufacturing process of the heating component can be simplified, and the production efficiency of the heating component 1 is improved and the production cost is reduced.
The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (15)
1. A heating assembly, comprising:
A heating element comprising an integrally formed first heating portion having a cavity therein at least partially for receiving an aerosol-generating article, the cavity being open at a top for the aerosol-generating article to enter, and a second heating portion disposed facing the cavity and defining at least part of a boundary of a bottom of the cavity;
At least a partial region of the heating element is a heating zone configured to generate heat when electrically conductive, at least a part of the first heating portion and at least a part of the second heating portion being part of or within the coverage of the heating zone.
2. A heating assembly as recited in claim 1, wherein,
The heating assembly includes a plurality of electrodes, the first heating portion and the second heating portion are each electrically connected to one or more of the electrodes, and the first heating portion and the second heating portion are each configured to generate joule heat when electrically conducted with the electrodes.
3. A heating assembly as recited in claim 2, wherein,
The first heating portion and the second heating portion comprise a conductive ceramic or graphite alloy.
4. A heating assembly as recited in claim 1, wherein,
The heating assembly comprises a heating layer capable of generating heat when the electric conduction is conducted, part of the heating layer is combined on the first heating part, part of the heating layer is combined on the second heating part, and the area where the heating layer is located forms the heating area.
5. A heating assembly as recited in claim 1, wherein,
The heating assembly includes a first electrode and a second electrode bonded to the heating element, and at least a portion of the heating zone is formed between the first electrode and the second electrode.
6. A heating assembly as recited in claim 5, wherein,
The first electrode is circumferentially arranged on the periphery of the first heating part in a surrounding manner, and the second electrode is circumferentially arranged on the periphery of the second heating part in a surrounding manner; or (b)
The first electrode and the second electrode each extend in an axial direction of the heating element.
7. A heating assembly as recited in claim 1, wherein,
The heating areas comprise a first heating area and a second heating area which are mutually spaced, at least part of the first heating part is a component part of the first heating area or is in the coverage range of the first heating area, and at least part of the second heating part is a component part of the second heating area or is in the coverage range of the second heating area.
8. The heating assembly of claim 7, wherein the heating assembly comprises a heater,
The heating assembly comprises a first electrode, a second electrode and a third electrode, and the first electrode, the second electrode and the third electrode are circumferentially arranged on the periphery of the heating element; the first heating region is formed between the first electrode and the second electrode, the second heating region is formed between the second electrode and the third electrode, and the first heating region and the second heating region are spaced apart by the second electrode.
9. The heating assembly of claim 8, wherein the heating assembly comprises a heater,
The second electrode is arranged on the first heating part and is in critical arrangement with the second heating part.
10. The heating assembly of claim 7, wherein the heating assembly comprises a heater,
The heating assembly comprises a first electrode, a second electrode and a third electrode, wherein the first electrode, the second electrode and the third electrode extend along the axial direction of the heating element, the second electrode and the third electrode are arranged on the same straight line and are mutually spaced, and the first electrode is arranged in a staggered mode on the circumferential direction of the heating element;
the first heating region is formed between the first electrode and the second electrode, and the second heating region is formed between the first electrode and the third electrode.
11. The heating assembly of claim 7, wherein the heating assembly comprises a heater,
The axial spacing between the first heating zone and the second heating zone is at least 2 millimeters.
12. A heating assembly according to any one of claims 1-11 wherein,
The second heating part is provided with a first air passage, and the first air passage allows air to enter the cavity.
13. The heating assembly of claim 12, wherein the heating assembly comprises a heater,
The first air passage extends by more than 2 mm, so that air flowing through the first air passage is heated into hot air flow by the second heating part.
14. The heating assembly of claim 12, wherein the heating assembly comprises a heater,
The second heating part is also provided with a second air passage which is intersected with the first air passage and is communicated with a plurality of first air passages.
15. An aerosol-generating device comprising a heating assembly according to any of claims 1 to 14, and a power supply for providing power to heat the heating region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322744884.9U CN221059596U (en) | 2023-10-11 | 2023-10-11 | Heating element and aerosol generating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322744884.9U CN221059596U (en) | 2023-10-11 | 2023-10-11 | Heating element and aerosol generating device |
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| Publication Number | Publication Date |
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| CN221059596U true CN221059596U (en) | 2024-06-04 |
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| CN202322744884.9U Active CN221059596U (en) | 2023-10-11 | 2023-10-11 | Heating element and aerosol generating device |
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| Country | Link |
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| CN (1) | CN221059596U (en) |
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