CN117158652A - Heating element and aerosol generating device - Google Patents

Abstract

The application relates to a heating component and an aerosol generating device, which comprises a rod core, wherein the rod core extends along the heating component, at least one groove is formed in the surface of the rod core, and the groove extends along the axial direction of the rod core; a heater disposed at the periphery of the rod core and supported by the rod core, the heater being for heating the aerosol-generating article to generate an aerosol; and the lead is positioned on the inner side of the heater and at least partially accommodated in the groove, and is electrically connected with the heater.

Description

Heating element and aerosol generating device

Technical Field

The embodiment of the application relates to the technical field of aerosol generation, in particular to a heating component and an aerosol generation device.

Background

Conventional aerosol-generating devices typically include a heater that extends into and heats the interior of the aerosol-generating article, thereby volatilizing the aerosol-generating article to generate an aerosol.

The heating element generally comprises a rod core and a heating element, the heating element is electrically connected with the lead, and the heating element and the lead are generally positioned on the inner side of the rod core or on the outer side of the rod core, so that the heating efficiency is low and the energy consumption is high.

Disclosure of Invention

A heating assembly for heating an aerosol-generating article according to an embodiment of the present application comprises:

the rod core is provided with at least one groove on the surface, and the groove extends along the axial direction of the rod core;

a heater disposed at the periphery of the rod core and supported by the rod core, the heater being for heating an aerosol-generating article to generate an aerosol;

and the lead is positioned on the inner side of the heater and is at least partially accommodated in the groove, and the lead is electrically connected with the heater. .

The embodiment of the application provides an aerosol generating device which comprises the heating component.

The heater is arranged on the periphery of the rod core, the lead wires are positioned on the inner side of the heater and are arranged in the grooves on the surface of the rod core, so that the heater and the lead wires are arranged in a layered manner in the radial direction of the heater, and on one hand, the heater on the periphery of the rod core is uniformly distributed; on the other hand, the heater is disposed at the periphery of the lead, which contributes to shortening the distance between the heater and the aerosol-generating article, and can reduce heat loss and improve heat transfer efficiency, as compared with the case where the heater is disposed inside the lead.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of an aerosol-generating device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a heating assembly according to an embodiment of the present application;

FIG. 3 is a schematic view of a heating assembly provided in another embodiment of the present application;

FIG. 4 is a schematic view of a heating assembly provided in another embodiment of the present application;

FIG. 5 is a schematic view of a heating assembly provided in another embodiment of the present application;

FIG. 6 is a schematic illustration of a mandrel and electrode ring provided in accordance with one embodiment of the present application;

FIG. 7 is a schematic circuit diagram of an aerosol-generating device according to an embodiment of the present application;

FIG. 8 is a schematic view of a mandrel according to an embodiment of the present application;

in the figure:

1. an aerosol-generating article; 2. a receiving chamber;

3. a heating assembly; 31. a heater; 311. an electrode ring; 312. an insulating ring; 313. a heating element; 32. a core rod; 321. a groove; 322. a cap end; 323. a post; 324. a rib; 33. a lead wire; 34. an induction coil;

4. a power supply assembly; 41. a circuit board; 42. a battery cell;

5. and a controller.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number or order of features in which such is indicated. All directional indications (such as up, down, left, right, front, rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship or movement of the components under a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indication is changed accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not 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 may be included in at least one embodiment of the application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

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 intervening elements may also be present. 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 also be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

An embodiment of the present application provides an aerosol-generating device that may be used to heat an aerosol-generating article to volatilize aerosol from the aerosol-generating article for inhalation, the aerosol may comprise a herbal medicine, nicotine or a flavour compound such as a tobacco flavour.

In the embodiment shown in fig. 1, the aerosol-generating device comprises a receiving cavity 2 for receiving the aerosol-generating article 1 and a heating assembly 3 for heating the aerosol-generating article 1, and further comprises a power supply assembly 3, the power supply assembly 4 being arranged to power the operation of the heating assembly 3.

Referring to fig. 1, the aerosol-generating device has an insertion opening through which an aerosol-generating article 1, such as a cigarette, is removably received within the receiving cavity 2; at least a portion of the heating assembly 3 extends axially within the receiving chamber 2 and generates heat by electromagnetic induction under a varying magnetic field, or by the thermal effect of electrical resistance when energized, or radiates infrared radiation to the aerosol-generating article 1 when stimulated, thereby heating the aerosol-generating article 1, such as a cigarette, and volatilizing at least one component of the aerosol-generating article 1 to form an aerosol for inhalation; the power supply assembly 4 comprises a battery core 42 and a circuit board 41, wherein the battery core 42 is a chargeable direct current core and can output direct current, and the circuit board 41 is electrically connected with the chargeable battery core 42 and is used for controlling the output of the current, the voltage or the electric power of the battery core 42. In other embodiments, the battery cells 42 may also be disposable batteries, which may not be rechargeable or need not be charged. In other implementations, the power supply assembly 4 may be a wired power supply that directly connects to mains via a plug to power the aerosol generating device.

In an alternative embodiment, the dc supply voltage provided by the battery 42 is in the range of 2.5V to 9.0V and the amperage of the dc current that the battery 42 can provide is in the range of 2.5A to 20A.

Further in an alternative implementation, the aerosol-generating article 1 may employ tobacco-containing material that releases volatile compounds from the aerosol-generating article 1 upon heating; or may be a non-tobacco material capable of being heated and thereafter adapted for electrical heating for smoking. The aerosol-generating article 1 may employ a solid substrate comprising one or more of a powder, granules, shredded strips, ribbons or flakes of one or more of vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco; alternatively, the aerosol-generating article 1 may comprise additional tobacco or non-tobacco volatile flavour compounds to be released when the aerosol-generating article 1 is heated. In some alternative implementations, the aerosol-generating article 1 is prepared to have a conventional cigarette or cigar shape.

In an embodiment, reference may be made to fig. 2-5, the heating assembly 3 being generally in the shape of a pin or needle or token, which is advantageous for insertion into the aerosol-generating article 1. Meanwhile, the heating assembly 3 may have a length of about 12 to 19 mm and a diameter of 2.0 to 2.6 mm. The cross section of the material can be round, straight, elliptic or polygonal. In other embodiments, the heating assembly 3 may be generally cylindrical or other structure capable of being disposed about the periphery of the aerosol-generating article 1 to conduct and radiate heat from the periphery of the aerosol-generating article 1 to the aerosol-generating article 1.

Referring to fig. 2 to 6, the heating assembly 3 includes a heater 31 and a rod core 32, the heater 31 is used for heating the aerosol-generating article 1 to generate aerosol, and the heater 31 is disposed at the periphery of the rod core 32 and is supported by the rod core 32. The rod core 32 extends along the axial direction of the heating assembly 3, and is at least partially in contact with the inner side of the heater 31 so as to support the heater 31 in the radial direction, and in order to reduce the heat transferred from the heater 31 to the rod core 32, the surface of the rod core 32 is rugged, or the inner side of the heater 31 is rugged so that the surface of the rod core 32 can only be partially in contact with the heater 31, or the inner side of the heater 31 can only be partially in contact with the surface of the rod core 32, thereby reducing the contact area of the heater 31 and the rod core 32, namely reducing the heat transfer area of the heater 31 and the rod core 32, and preventing heat from being transferred to the rod core 32, thereby reducing energy consumption.

Specifically, in an embodiment, as shown in fig. 6 and 8, at least one groove 321 may be disposed on the surface of the rod core 32, and the surface of the rod core 32 is rugged through the groove 321, and when the heater 31 is disposed on the surface of the rod core 32, the heater 31 and the one or more grooves 321 may jointly define one or more accommodating spaces, the number of the accommodating spaces may be consistent with that of the grooves 321, and the accommodating spaces are used for accommodating the leads 33, so that the leads 33 may be electrically connected to the inner side surface of the heater 31, on one hand, the accommodating spaces may enable the leads 33 to be accommodated inside the heater 31, so that the leads 33 are prevented from being located outside the heater 31 and reducing the surface consistency of the heater 3, or increasing the thickness between the heater 31 and the surface of the heater 3, or enabling the heater 31 to not cover the rod core 32 by 360 ° so as to make the avoiding space for the leads 33 to pass through, and when the heater 31 cannot cover the rod core by 360 °, the aerosol-generating product 1 located at the periphery of the heater 3 may be unevenly heated, thereby affecting the output and quality of aerosol; on the other hand, the accommodation space can enable the orderly arrangement of the plurality of leads 33, prevent entanglement, disorder, and even knotting.

The lead wire 33 is used to electrically connect the heater 31 and the power supply assembly 4, and the power supply assembly 4 supplies an operating voltage or an operating current or the like to the heater 31 through the lead wire 33 so that the heater 31 can heat the aerosol-generating article 1 to generate an aerosol. The lead wire 33 may be a flexible wire or a conductive terminal having a certain hardness, and the present application is not limited thereto.

In one embodiment, the inner side of the heater 31 is uniform, such as a circular cross-sectional profile of the inner side of the heater 31. The receiving space is mainly defined by the grooves 321, and the leads 33 are mainly received in the corresponding grooves 321.

In another embodiment, the cross-sectional profile of the heater 31 is ring-shaped with corrugations or is lace-shaped or gear-shaped, etc., so that the lead wires 33 can be accommodated in the grains inside the heater 31, and in this embodiment, the surface of the rod core 32 may have the grooves 321 or may have good surface uniformity without the grooves 321.

In an embodiment, referring to fig. 6, the heater 31 includes a heating element 313 and a plurality of electrode rings 311, the electrode rings 311 may be closed rings, the cross-section of which may be circular, and of course, the electrode rings 311 may also be arc-shaped strips, and the cross-section of which may be arc-shaped, i.e. non-closed rings. The plurality of electrode rings 311 are sequentially arranged along the axial direction of the heating assembly 3 and are all sleeved on the periphery of the rod core 32, so that different electrode rings 311 are positioned at different axial heights of the rod core 32.

Each electrode ring 311 is electrically connected to one lead 33 individually, so that the electrode rings 311 can be identical in number to the leads 33, and adjacent electrode rings 311 are spaced apart from each other, independent of each other, and insulated from each other.

In one embodiment, the heating element 313 is made of or includes a resistive conductive material such as iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver, conductive ceramics, or the like, so that the heating element 313 can generate heat by a thermal effect of resistance when conducting electricity to heat the aerosol-generating article 1, thereby volatilizing at least one component in the aerosol-generating article 1 to form an aerosol.

In an alternative embodiment, referring to fig. 2 and 4, there may be one and only two heating elements 313, and the electrode rings 311 have two, one of the electrode rings 311 is configured to be electrically connected to the positive output electrode of the power supply assembly 4 through the corresponding lead 33, thereby forming a positive electrode ring, and the other electrode ring 311 is configured to be electrically connected to the negative output electrode of the power supply assembly 4 through the corresponding lead 33, thereby forming a negative electrode ring, and the heating element 313 is electrically connected to both the electrode rings 311 at the same time, so as to draw electricity therefrom, thereby generating joule heat. In order to facilitate the electrical connection of the lead wire 33 with the corresponding electrode ring 311, in one embodiment, the heating element 313 is disposed at the periphery of the two electrode rings 311 or between the two electrode rings 311, so that the lead wire 33 is not affected by shielding of the heating element 313 or the like when electrically connected with the inner side of the corresponding electrode ring 311.

In an alternative embodiment, referring to fig. 2, 4 and 7, there may be one and only one heating element 313, and the electrode ring 311 has three or more, the heating element 313 is electrically connected to all the electrode rings 311, and the heating element 313 is disposed outside the electrode rings in order not to affect the electrical connection of the lead wires 33 to the inner sides of the corresponding electrode rings 311.

Referring to fig. 7, the aerosol generating device may have a controller 5, where the controller 5 may be disposed on a circuit board 41, and the controller 5 connects a power supply assembly 4 and a heater 31, and may control and select one of the electrode rings 311 as a positive electrode ring, and select one of the electrode rings 311 as a negative electrode ring, and the remaining electrode rings 311 float (the electrode ring float in the present application means that there is a very large resistance between the electrode ring 311 and the power supply assembly 4, so that almost no direct current passes between the electrode ring 311 and the power supply assembly 4, or that the electrode ring 311 is not directly connected to the power supply assembly 4, and the electrode ring is indirectly connected to the power supply assembly 4 through a heating element and other electrode rings 311, or is indirectly electrically connected to the power supply assembly 4), and the positive electrode ring and the negative electrode ring are electrically connected through a heating element 313 therebetween, so that the heating element 313 between the positive electrode ring and the negative electrode ring participates in heating the heater 31. And, the larger the axial distance between the positive electrode ring and the negative electrode ring, i.e., the longer the axial length of the heating body 313 involved in heating, or the more the remaining floating electrode rings 311 are interposed between the positive electrode ring and the negative electrode ring, the larger the heating area on the heater 31, and the longer the length of the baked aerosol-generating article 1.

Meanwhile, in the case where the operating voltage supplied from the power supply unit 4 is unchanged, the larger the heating area on the heater 31, the larger the resistance involved in heat generation in the heat generating body 311, so that the lower the heat generating power of the heat generating body 313.

Therefore, when the first port is to be sucked, the two electrode rings 311 positioned at the uppermost end can be selected to be mutually conducted, and one is a positive electrode ring and the other is a negative electrode ring, so that the heating element 313 between the two electrode rings 311 has larger heating power due to larger current, the aerosol-generating article 1 of the corresponding section can be quickly made to generate aerosol, the requirement of quick smoke generation when the first port is sucked is met, then, from top to bottom, the second electrode ring 311 and the third electrode ring 311 can be selected to be mutually conducted, so that aerosol is generated by the other section on the aerosol-generating article 1, and then so on until the aerosol-generating article 1 is heated section by section, and the aerosol is released section by section. Of course, after the first port suction requirement is satisfied, the first electrode ring 311 and the last electrode ring 311 may be selected to be mutually turned on, so that the entire heating element 313 participates in heating. It will be appreciated that two different electrode rings 311 may be selected to be electrically conductive to each other as desired, thereby causing different sections of the heating element 313 to generate heat.

In an alternative embodiment, the controller 5 may control to select one electrode ring 311 of the three or more electrode rings 311 as a positive electrode ring, select two electrode rings 311 as negative electrode rings, both of the two negative electrode rings being turned on, and the positive electrode ring being located between the two negative electrode rings, define one of the two negative electrode rings as a first negative electrode ring, and the other negative electrode ring as a second negative electrode ring, so that the voltage between the positive electrode ring and the first negative electrode ring is equal to the voltage between the positive electrode ring and the second negative electrode ring, and the closer the distance between the positive electrode ring and the first negative electrode ring or the second negative electrode ring is, the larger the heating power of the heating element 313 of the corresponding section is due to the smaller the resistance, and when the distance between the positive electrode ring and the first negative electrode ring and the second negative electrode ring is unequal, the local baking of the aerosol-generating article 1 can be achieved, so that the aerosol is generated, the other part of the aerosol-generating article 1 is insulated, and the power consumption of the aerosol is prevented from condensing therein, thereby contributing to the reduction. It will be appreciated that the stepwise heating of the aerosol-generating article 1 may be achieved by selecting different positive electrode rings, or selecting different two electrode rings as negative electrode rings.

In one embodiment, the number of the heating elements 313 is plural, each heating element 313 is electrically connected with two or more electrode rings 311, and two adjacent heating elements 313 are independent from each other and are not connected or insulated. A plurality of electrode rings 311 electrically connected to the same heating element 313 are defined to constitute an electrode ring group, and thus, the outer periphery of the mandrel 32 is axially arranged with the plurality of electrode ring groups. Therefore, the controller 5 can select one electrode ring 311 in one electrode ring group as a positive electrode ring and one electrode ring 311 as a negative electrode ring, thereby realizing the gradual heating of the heating element 313 corresponding to the electrode ring group or the heating of a certain section; alternatively, the controller 5 may help to save energy by selecting one electrode ring 311 of one electrode ring group as a positive electrode ring, two electrode rings as negative electrode rings, and the positive electrode ring between the two negative electrode rings. When the controller 5 selects the electrode ring group to be turned on in a certain program or order (when the electrode rings in the electrode ring group are turned on with each other, it is considered that the electrode ring group is turned on), the plurality of heating elements 313 can be caused to heat in a certain program or order, thereby performing the sectional heating of the aerosol-generating article 1. It is understood that when the heating element 313 has a plurality, the plurality of heating elements 313 may be arranged in the axial direction of the heater 31.

In an embodiment, referring to fig. 6, the heater 31 further includes a plurality of insulating rings 312, wherein the plurality of insulating rings 312 are arranged along the axial direction of the heating element 3 and are all sleeved on the periphery of the rod core 32, and at least one insulating ring 312 is arranged between two adjacent electrode rings 311, so that the plurality of electrode rings 311 and the plurality of insulating rings 312 are arranged alternately, that is, the two adjacent electrode rings 311 are separated by at least one insulating ring 312, or the two adjacent insulating rings 312 are separated by one electrode ring 311, so that the two adjacent electrode rings 311 are insulated from each other.

In one embodiment, the rod core 32 further comprises a cap end 322 and a rod 323, the groove 321 is arranged on the rod 323, and the insulating ring 312 and the electrode ring 311 are sleeved on the rod 32. The cap end 322 and the post 323 are formed separately, and the end cap 322 is provided at one end of the post 323; alternatively, cap end 322 and post 323 are integrally injection molded, with end cap 322 disposed at one end of post 323. The electrode rings 311 and the insulating rings 312 are sleeved on the rod 323 one by one from the other end of the rod 323 and move along the surface of the rod 323 until one electrode ring 311 or one insulating ring 312 abuts against the top end cap 322. The subsequent insulating rings 312 and electrode rings 311 are sequentially abutted against each other to be arranged in a continuous line, and the heating element 313 is tubular, so that the heating element 313 can be finally sleeved on the periphery of the rod 323, one end of the heating element 313 is abutted against the end cap 322, and then the heating element 313 is packaged (for example, the heating element 313 is packaged by a shell or a protective layer and the like outside the heating element 313), thereby forming the heating assembly 3. To ensure uniformity and flatness of the surface of the heating element 3, in one embodiment, the maximum outer diameter of the end cap 322 is equal to the maximum outer diameter of the heat generating body 313.

Alternatively, one electrode ring 311 abuts the end cap 322, then one insulating ring 312 abuts the electrode ring 311, then the other electrode ring 311 abuts the insulating ring 312, and so on until the last insulating ring 312 and the last electrode ring 311 are sleeved.

In one embodiment, the electrode ring 311 is electrically connected to the corresponding lead 33 before the electrode ring 311 is sleeved on the post 323, and the lead 33 is accommodated in the corresponding groove 321 after the electrode ring 311 is sleeved on the post 323 or during the process of being sleeved on the post 323.

In one embodiment, the electrode ring 311 and/or the insulating ring 312 may be fixed on the post 323 by a substance having an adhesive effect such as high temperature glue; alternatively, the outside of the post 323 is provided with external threads, the inside of the insulating ring 312 is provided with internal threads, the insulating ring 312 and the post 323 are mutually fixed by screw engagement, and the electrode ring 311 is held on the post 323 by the insulating ring 312.

In one embodiment, the electrode ring 311 and the insulating ring 312 have the same outer diameter.

In one embodiment, the axial lengths of the electrode rings 311 may be equal, and the spacing between any two adjacent electrode rings 311 may be equal.

In one embodiment, the heating element 313 is a tubular body made of a metal etched sheet, mesh net, or the like, and generates heat by using the thermal effect of electric resistance. In one embodiment, the heating element 313 is a heating coil formed by winding a resistance wire.

In an embodiment, referring to fig. 4 and 5, the heater 31 includes a heating body 313, an induction coil 34, and a plurality of electrode rings 311.

The heating element 313 contains stainless steel (SS 430) of grade 430, stainless steel (SS 420) of grade 420, or alloy material (such as permalloy) containing iron and nickel, or other magnetically sensitive material such as graphite alloy which can generate heat in a changing magnetic field, so that the heating element 313 generates self-heat in the changing magnetic field due to eddy current and hysteresis, and conducts and/or radiates heat to the aerosol-generating article 1 to heat the aerosol-generating article 1.

The induction coil 34 is used to generate a varying magnetic field. The circuit board 41 connects the battery core 42 and the induction coil 34, and can convert the direct current output by the battery core 42 into alternating current, and in one embodiment, the frequency of the alternating current is between 80KHz and 400KHz; more specifically, the frequency may be in the range of about 200KHz to 300 KHz.

The heating body 313 is located at the periphery of the induction coil 34, and a plurality of electrode rings 311 are arranged along the axial direction of the heating component 3 and are all sleeved at the periphery of the rod core 32, and each electrode ring 311 is independently and electrically connected with one lead 33.

In one embodiment, the induction coil 34 has a plurality of heating elements 313, which may be one and only one, located at the periphery of the induction coil 34; or the heating bodies 313 may have a plurality of, independent from each other, one-to-one located at the outer periphery of the corresponding induction coil 34 and sequentially arranged in the axial direction of the heating element 3.

Each induction coil 34 is electrically connected with more than two electrode rings 311, wherein one electrode ring 311 is a positive electrode ring, and one electrode ring 311 is a negative electrode ring, and the positive electrode ring and the negative electrode ring provide alternating current for generating a variable magnetic field for the corresponding induction coil 34. The controller 5 selects different electrode rings 311 to be a positive electrode ring and a negative electrode ring, and the positive electrode ring and the negative electrode ring are mutually conducted through corresponding induction coils 34, so that different heating bodies 313 or different sections of the same heating body 313 generate heat due to magnetic induction, and therefore different heating bodies 313 or different sections of the same heating body 313 generate heat according to a certain sequence or rule, and further the aerosol-generating product 1 is heated in a segmented mode, or heated with different powers or the like.

In one embodiment, there is one and only one induction coil 34, electrically connecting a plurality of electrode rings 311 at the same time. The heating element 313 may be one or only one, and is located at the periphery of the induction coil 34; or the heating elements 313 may be provided in plural numbers, located at the periphery of the induction coil 34, independent of each other, and sequentially arranged in the axial direction of the heating element 3.

The induction coil 34 is electrically connected to a plurality of electrode rings 311 at the same time, wherein one electrode ring 311 is a positive electrode ring and one electrode ring 311 is a negative electrode ring, and the positive electrode ring and the negative electrode ring supply alternating current for generating a varying magnetic field to the corresponding induction coil 34. The controller 5 selects different electrode rings 311 to be a positive electrode ring and a negative electrode ring, and the positive electrode ring and the negative electrode ring are mutually conducted through the induction coil 34, so that different heating bodies 313 or different sections of the same heating body 313 generate heat due to magnetic induction, and therefore different heating bodies 313 or different sections of the same heating body 313 generate heat according to a certain sequence or rule, and further the aerosol-generating product 1 is heated in a segmented mode, or different power heating is performed.

In an embodiment, a control panel is disposed on the outer side of the aerosol-generating device, the control panel includes a touch screen or a key, the control panel is electrically connected to the controller 5, and is configured to manually input control information through the control panel, and after the controller 5 receives the control information, further select a heating mode of the heating assembly 3, for example, the heating assembly 3 heats the aerosol-generating article 1 section by section, or the heating assembly 3 heats a local portion of the aerosol-generating article 1 with high power to generate aerosol, and heats a local portion with low temperature to perform preheating or heat preservation, etc.

In one embodiment, as shown in fig. 6 and 8, the plurality of grooves 321 provided on the surface of the core 32 may be provided, and the plurality of grooves 321 may be uniformly distributed on the core 32.

In one embodiment, as shown in fig. 6 and 8, there are a plurality of grooves 321 provided on the surface of the core 32, and a plurality of leads 33, each groove 321 accommodates one lead 33 therein, so that two adjacent leads 33 are separated by the groove 321, so that the leads 33 are more ordered.

In one embodiment, as shown in fig. 6 and 8, the grooves 321 provided on the surface of the core 32 are plural, and the surface of the core 32 is further provided with plural ribs 324, each rib 324 extends along the axial direction of the heating element 3, two adjacent ribs 324 define one groove 321, and the ribs 324 have substantially the same thickness throughout, so that the ribs 324 are substantially rectangular. In one embodiment, the different ribs 324 may have the same thickness.

Above heating element and aerosol generating device through set up the recess at the surface of stick core, reduces the area of contact between heater and the stick core, and then increases the thermal resistance between heater and the stick core to this prevents and reduces the heat of following the transmission of heater to the stick core, can avoid the stick core to excessively intensify and burn out, can hinder the heat to inwards transmit again, reduces the heat of loss, thereby can reduce the energy consumption.

The heater is arranged on the periphery of the rod core, and the lead wires are arranged in the grooves on the surface of the rod core, so that the heater and the lead wires are arranged in a layered manner, on one hand, the lead wires cannot exceed the range of the heater to influence the consistency and flatness of the surface of the heating component, or the periphery of the rod core cannot surround the rod core by 360 degrees because the lead wires are avoided, and therefore the aerosol-generating product can be heated more uniformly; on the other hand, the heater is closer to the outer surface of the heating assembly than the lead wires, so that the distance between the heater and the aerosol-generating article is shortened, the heat transfer efficiency is improved, and the user experience is improved.

It should be noted that the description of the application and the accompanying drawings show preferred embodiments of the application, but are not limited to the embodiments described in the description, and further, that modifications or variations can be made by a person skilled in the art from the above description, and all such modifications and variations are intended to fall within the scope of the appended claims.

Claims (14)

1. A heating assembly for heating an aerosol-generating article, comprising:

the rod core is provided with at least one groove on the surface, and the groove extends along the axial direction of the rod core;

a heater disposed at the periphery of the rod core and supported by the rod core, the heater being for heating an aerosol-generating article to generate an aerosol; and

and the lead is positioned on the inner side of the heater and is at least partially accommodated in the groove, and the lead is electrically connected with the heater.

2. The heating assembly of claim 1, wherein the heater comprises a heating body and a plurality of electrode rings, the plurality of electrode rings are arranged along the axial direction of the heating assembly and are sleeved on the periphery of the rod core, and each electrode ring is independently and electrically connected with one lead wire;

the heating elements are multiple, and each heating element is electrically connected with more than two electrode rings; or alternatively

The heating body is provided with only one heating body and is electrically connected with the plurality of electrode rings.

3. The heating assembly of claim 2, wherein one of said electrode rings electrically connected to one of said heating elements is a positive electrode ring, one of said electrode rings is a negative electrode ring, and said positive electrode ring and said negative electrode ring are electrically connected through said heating element; or alternatively

One of the electrode rings is a positive electrode ring, two of the electrode rings are negative electrode rings, the positive electrode ring and the two negative electrode rings are conducted through the heating body, and the positive electrode ring is located between the two negative electrode rings.

4. The heater assembly of claim 2, further comprising a plurality of insulating rings disposed about the periphery of the wick in an axial direction of the heater assembly, at least one insulating ring disposed between two adjacent electrode rings.

5. The heating assembly of claim 4, wherein the wick comprises an end cap and a stem, the groove is disposed on the stem, the end cap is disposed or formed at one end of the stem, the plurality of electrode rings and the plurality of insulating rings are each sleeved on the stem from the other end of the stem, and one of the electrode rings abuts the end cap.

6. A heating assembly as claimed in claim 2, wherein the core comprises an end cap and a stem, the recess is provided in the stem, the end cap is provided or formed at one end of the core, the heating element is tubular or coil, the other end of the stem is sleeved on the periphery of the stem, and the heating element abuts against the end cap.

7. A heating assembly as claimed in claim 2, wherein the spacing between any adjacent two of said electrode rings is equal; and/or

At least two of the electrode rings have the same axial length.

8. The heating assembly of claim 1, wherein the heater comprises a heat generating body operable to generate heat at a varying magnetic field, an induction coil operable to generate a varying magnetic field, and a plurality of electrode rings, the heat generating body being located at a periphery of the induction coil;

the electrode rings are arranged along the axial direction of the heating component and are sleeved on the periphery of the rod core, and each electrode ring is independently and electrically connected with one lead wire;

the induction coils are multiple, and each induction coil is electrically connected with more than two electrode rings; or alternatively

The induction coil has and only has one, and is electrically connected to the plurality of electrode rings.

9. The heating assembly of claim 8 wherein said heater is tubular with one and only one of said induction coils positioned inside said heater; or alternatively

The heating elements are tubular, the number of the heating elements is equal to that of the induction coils, and the heating elements are sleeved on the peripheries of the induction coils one by one.

10. The heating assembly of claim 1, wherein said grooves are a plurality of evenly distributed across said wick.

11. The heating assembly of claim 1 wherein said recess has a plurality of said leads, at least one of said recesses receiving one of said leads or at least one of said recesses simultaneously receiving a plurality of said leads.

12. The heating assembly of claim 1 wherein said recess has a plurality and said surface of said core further has a plurality of ribs, each of said ribs extending in an axial direction of said heating assembly, adjacent two of said ribs defining one of said recesses.

13. The heating assembly of claim 12, wherein at least two of said ribs are the same thickness; or alternatively

The ribs are generally rectangular.

14. An aerosol-generating device comprising a heating assembly according to any of claims 1 to 13.