CN221449918U

CN221449918U - Aerosol generating device

Info

Publication number: CN221449918U
Application number: CN202323038340.7U
Authority: CN
Inventors: 操广平; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2023-11-10
Filing date: 2023-11-10
Publication date: 2024-08-02
Anticipated expiration: 2033-11-10

Abstract

An embodiment of the present application proposes an aerosol-generating device comprising: a heating body comprising a heating zone for heating the aerosol-generating article, the heating zone comprising a first zone and a second zone; and a temperature field adjusting member disposed on one of the first region and the second region and configured to absorb a portion of heat of the disposed region to adjust a temperature gradient between the first region and the second region.

Description

Aerosol generating device

Technical Field

The embodiment of the application relates to the technical field of heating non-combustion aerosol generation, in particular to an aerosol generation device.

Background

Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release the compounds without burning.

An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be an aerosol-generating article comprising tobacco or other non-tobacco products, which may or may not comprise nicotine.

The known heating device comprises a heater, which after assembly requires adjustment of the temperature field of the heating element according to the heating requirements of the adapted smoking article and the user's requirements for the taste of the smoking. However, after the heater is manufactured, the heating track or heating element thereon is deterministic and unchangeable, and reworking increases the production cost.

Disclosure of utility model

The application provides an aerosol generating device, which can adjust the temperature field on a heating body according to the requirement.

One embodiment of the present application provides an aerosol-generating device comprising:

a heating body comprising a heating zone for heating the aerosol-generating article, the heating zone comprising a first zone and a second zone; and

A temperature field adjusting member disposed on one of the first region and the second region and configured to absorb a portion of heat of the disposed region to adjust a temperature gradient between the first region and the second region.

In the aerosol-generating device described above, the heating zone on the heating body is for heating the aerosol-generating article, the heating zone comprises a first region and a second region, and the temperature field adjusting member is capable of absorbing a portion of heat of the first region or the second region, thereby adjusting a temperature gradient between the first region and the second region. Therefore, the distribution of the temperature field on the heating body can be changed by selecting the temperature field adjusting piece so as to meet the heating requirement of the adaptive aerosol-generating product and the requirement of a user on the sucking taste.

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 view of an aerosol-generating device according to an embodiment;

FIG. 2 is a schematic diagram of a heating assembly provided by an embodiment;

FIG. 3 is a schematic view of a heating assembly provided by another embodiment;

FIG. 4 is a schematic view of a heating assembly provided by another embodiment;

FIG. 5 is a schematic view of a heating assembly provided by another embodiment;

FIG. 6 is a schematic view of a heating assembly provided by another embodiment;

FIG. 7 is a schematic view of a heating assembly provided by another embodiment;

Fig. 8 is a temperature curve of different areas on the heating body when the temperature field adjusting member is not arranged in the heating assembly provided by the embodiment, wherein T1 is a temperature curve corresponding to the first area, T2 is a temperature curve corresponding to the second area, and T3 is a temperature curve corresponding to the third area;

Fig. 9 is a temperature curve of different areas on the heating body when the heating assembly is provided with the temperature field adjusting piece, wherein T1 is a temperature curve corresponding to the first area, T2 is a temperature curve corresponding to the second area, and T3 is a temperature curve corresponding to the third area;

In the figure:

1. A heating assembly; 11. a receiving chamber; 12. a heating body; 121. a first region; 122. a second region; 123. a third region; 124. a base; 125. a heating element; 126. an upper end opening; 127. an opening at the lower end; 13. a temperature field adjusting member; 14. a sensing head; 15. an upper end cap; 151. an insertion port; 16. a lower end cap; 161. an air inlet; 17. a fixing seat;

2. An aerosol-generating article;

3. a power supply;

4. A circuit board; 41. a controller; 5. a preheating stage; 6. a suction stage; 7. and a heat insulation layer.

Detailed Description

The technical solutions of 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 apparent that the described embodiments are only a partial embodiment of the present application, not all embodiments. 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, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship or movement of the components in a certain posture (as shown in the drawings), and if the posture is changed, the directional indication is correspondingly changed. 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 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.

Referring to fig. 1, one embodiment of the present application proposes a heating assembly 1 and an aerosol-generating device comprising the heating assembly 1, the aerosol-generating device being a device that interfaces or interacts with an aerosol-generating article 2 to form an inhalable aerosol.

As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate 21 that upon heating releases volatile compounds that can form an aerosol. In an embodiment, the aerosol-generating article is removably coupled to the aerosol-generating device. The article may be disposable or reusable.

The aerosol-forming substrate 21 may comprise a solid aerosol-forming substrate. The solid aerosol-forming substrate may comprise a tobacco-containing material containing volatile tobacco flavour compounds that are released from the aerosol-forming substrate upon heating. The solid aerosol-forming substrate may comprise a non-tobacco material. The solid aerosol-forming substrate may comprise tobacco-containing material and no tobacco-containing material.

The aerosol-forming substrate 21 may comprise a liquid aerosol-forming substrate. The liquid aerosol-forming substrate may comprise a tobacco material-containing liquid comprising volatile tobacco flavour components, and may also be a non-tobacco material-containing liquid. The liquid aerosol-forming substrate may comprise water, solvents, ethanol, plant extracts, flavors, fragrances, or vitamin mixtures, and the like, and the flavors may comprise betel nut extract, menthol, peppermint, spearmint oil, various fruit flavor components, and the like, but are not limited thereto. The flavoring agent may comprise ingredients that may provide various aromas or flavors to the user. The vitamin mixture may be a mixture mixed with at least one of vitamin a, vitamin B, vitamin C, and vitamin E, but is not limited thereto.

The aerosol-generating device has a receiving cavity 11 inside, at least part of the aerosol-generating article 2 being engageable in the receiving cavity 11, the aerosol-generating device may be an electrically operated device, and the heating assembly 1 adapted to the aerosol-generating device may be an electric heater, so that the heating assembly 1 may generate heat when supplied with electric or magnetic power, at least in regions heat being transferred to the aerosol-generating article 2 in the receiving cavity 11, such that the aerosol-generating article 2 is heated.

The aerosol-generating device further comprises a power supply 3 and a circuit board 4, the power supply 3 may comprise any suitable battery or cell, the circuit board 4 having one or more controllers 41 thereon, the circuit board 4 being electrically connected to the power supply 3 and the heating assembly 1, the controllers 41 being capable of controlling the power supply 3 to provide power or a magnetic field to the heating assembly 1. The circuit board 4 can also control other operations of the aerosol-generating device, such as controlling a sensory cue in the aerosol-generating device to produce a sensory signal such as sound, light or vibration.

More specifically, reference may be made to fig. 2-7. The heating assembly 1 comprises a heating body 12 and a temperature field adjusting member 13, the heating body 12 having a heating zone thereon, the heating body 12 heating the aerosol-forming substrate 21 of the aerosol-generating article 2 mainly by heat released from the heating zone. The heating zone may be in direct contact with the aerosol-forming substrate 21 or may be in indirect contact with the aerosol-forming substrate 21 through a thermally conductive element. The heating zone may heat the aerosol-generating article 2 by self-heating and/or by absorbing heat from other components.

The heating zone may comprise a first region 121 and a second region 122, the first region 121 and the second region 122 being arranged corresponding to different parts of the aerosol-forming substrate 21 for heating different parts of the aerosol-forming substrate 21, respectively. The temperature field adjusting member 13 is disposed on one of the first region 121 and the second region 122 for absorbing a portion of heat of the region where it is disposed to adjust a temperature gradient between the first region 121 and the second region 122. Thus, the temperature field distribution on the heating body 12 can be changed by selecting the temperature field adjusting member 13 while the structural characteristics of the heating body 12 remain unchanged. The temperature field adjusting members 13 of different materials or different dimensions are prepared to have different capacities for absorbing heat, so that the temperature gradient between the first area 121 and the second area 122 can be different by selecting different temperature field adjusting members 13, so as to meet different heating requirements of the adapted aerosol-generating articles 2 and different requirements of users on sucking taste.

In an embodiment, the temperature field adjusting member 13 is configured to reduce the temperature gradient between the first region 121 and the second region 122, so as to balance the temperature field between the first region 121 and the second region 122, reduce the temperature difference between the first region 121 and the second region 122, facilitate relatively uniform heating of the aerosol-forming substrate 21, facilitate increasing the amount of aerosol to enhance the taste, or facilitate preventing the local temperature of the aerosol-forming substrate 21 from being too high to cause the local part of the aerosol-forming substrate 21 to be burned or burned, or prevent the local temperature of the aerosol-forming substrate 21 from being too low to cause the local part of the aerosol-forming substrate 21 to be insufficiently baked.

In one embodiment, the temperature field modifier 13 is used to increase the temperature gradient between the first region 121 and the second region 122. In some aerosol-generating articles 2, the aerosol-forming substrate 21 has a plurality of different flavour compounds therein, and the plurality of different flavour compounds have different volatilisation temperatures. In one example, by increasing the temperature gradient or difference between the first region 121 and the second region 122 to provide multiple different heating temperatures between the first region 121 and the second region 122 to heat the aerosol-forming substrate 21, the evaporation of multiple different flavour compounds in the aerosol-forming substrate 21 is facilitated, thereby enriching the mouthfeel. In one example, the mouthfeel is enhanced by increasing the temperature gradient or difference between the first region 121 and the second region 122 to reduce the volatiles of one or more different aroma compounds in the aerosol or to prevent the volatiles of one or more different aroma compounds from undergoing a taste-altering.

In one embodiment, referring to fig. 2-4, the heating body 12 includes a heat generating material. The heat generating material may comprise a resistive material capable of generating joule heat or infrared light when energized, or the heat generating material may comprise a susceptor material capable of generating heat in a varying magnetic field. That is, at least part of the material from which the heating body 12 is made is capable of generating heat.

Among suitable resistive materials include, but are not limited to: semiconductors such as doped ceramics, conductive ceramics (e.g., molybdenum disilicide), carbon, graphite, metals, metal alloys, and composites made of 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.

The susceptor material may comprise metal or carbon. In an embodiment, the susceptor material may comprise a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. In one embodiment, the susceptor material comprises a nickel-iron alloy. In one embodiment, the susceptor material comprises a 400 series stainless steel, and the 400 series stainless steel comprises a 410 grade or 420 grade or 430 grade stainless steel.

In one embodiment, referring to fig. 5, the heating body 12 includes a base 124 and a heating element 125 disposed on the base 124. The heating element 125 includes a resistive material or a susceptor material. The heat generating element 125 may be a heat generating coating or a heat generating trace formed on the substrate 234. The heating element 125 may include a heating mesh or wire bonded to the substrate 124. The base 124 may be used to support the heating element 125. The substrate 124 may be closer to the aerosol-forming substrate 21 than the heating element 125; or the substrate 124 may contact the aerosol-forming substrate 21 and the substrate 124 is capable of transferring heat released by the heating element 125 to the aerosol-forming substrate 21.

In an embodiment, the preparation material of the first region 121 comprises a heat generating material, or the first region 121 is provided with a heat generating element 125, such that the first region 121 is capable of generating heat, the preparation material of the second region 122 comprises an insulating material, or the second region 122 is not provided with a heat generating element 125, or for other reasons such that the second region 122 is not capable of generating heat, the second region 122 is warmed by absorbing part of the heat released by the first region 121 or other components, and the second region 122 is warmed by releasing part of the heat absorbed by it.

In one example where the second region 122 is warmed by absorbing heat, the second region 122 may comprise a thermally conductive material, which may be understood as a material having a thermal conductivity of at least 40W/(m·k), preferably at least 100W/(m·k), more preferably at least 150W/(m·k), and most preferably at least 200W/(m·k) at 23 ℃ and 50% relative humidity. Suitable thermally conductive materials include, but are not limited to: graphite, graphene, aluminum, copper, zinc, steel, silver, a thermally conductive polymer, or any combination or alloy thereof.

In an example in which the second region 122 is warmed by absorbing heat, the first region 121 and the second region 122 may have the same heating efficiency, or may have different heating efficiencies.

In an embodiment, the first and second regions 121 and 122 have substantially the same heating efficiency, i.e., the first and second regions 121 and 122 can release substantially the same heat at the same time per unit area. As one example, the heat generating material or elements 125 are uniformly distributed in the first region 121 and the second region 122. As one example, the heat generating material or elements 125 are uniformly distributed throughout the heating zone.

Referring to fig. 8 and 9, the heating stage of the aerosol-generating article 2 generally comprises a preheating stage 5 and a suction stage 6. The pre-heating stage 5 is used to rapidly or substantially raise the heat generating component 1 or the aerosol-generating article 2 from room temperature or from an initial temperature to a target temperature to meet the user's need to rapidly aspirate the first port, the user's aspiration of the aerosol-generating article 2 taking place mainly in the aspiration stage 6.

The temperature field adjusting member 13 is disposed in the second region 122, and the temperature field adjusting member 13 absorbs heat of the second region 122, so that it is possible to delay the time when the second region 122 reaches its maximum temperature in the preheating stage 5, or advance the time when the first region 121 reaches its maximum temperature in the preheating stage 5, or delay the time when the second region 122 reaches its maximum temperature in the preheating stage 5 later than the time when the first region 121 reaches its maximum temperature in the preheating stage 5.

For example, the first region 121 and the second region 122 have substantially the same heating efficiency, and when the temperature field adjusting member 13 is not provided in the heating unit 1 to absorb the heat of the second region 122, the first region 121 and the second region 122 reach the respective maximum temperatures at the same time at t1 after the start of heating because the first region 121 and the second region 122 have substantially the same heating efficiency; when the heating assembly 1 has the temperature field adjusting member 13 to absorb the heat of the second region 133, the first region 121 reaches its maximum temperature at time t2 after the start of heating, the second region 122 reaches its maximum temperature at time t3 after the start of heating, and the maximum temperature of the first region 121 and the maximum temperature of the second region 122 may be different. Where t1 may be approximately equal to t2, or t1 may not be equal to t 2.

As an example, the heating assembly 1 is additionally provided with the temperature field adjusting member 13 to absorb heat of the first area 121 or the second area 122, and the original control logic is adopted to control the power supply 3 to provide power for the heating assembly 1. In other words, the heating element 1 is not provided with the temperature field adjusting member 13 to absorb the heat of the first region 121 or the second region 122, and the heating element 1 is provided with the temperature field adjusting member 13 to absorb the heat of the first region 121 or the second region 122, which have the same control logic.

For example, 1: the pumping phase 6 may comprise a plurality of time periods, the controller 41 being configured to control the power supply 3 to supply the heating assembly 1 with preset energy corresponding to each time period. The "preset energy" is preset energy, and is energy supply amount which does not need to be regulated and controlled according to the real-time temperature of the heating assembly 1. In other words, the amount of preset energy supplied to the heating assembly 1 by the power supply 3 for the corresponding period of time is substantially unaffected by the temperature of the heating assembly 1. The controller 41 may not regulate the amount of energy supplied to the heating assembly 1 for the corresponding period of time based on temperature feedback of the heating assembly 1.

In this regard, taking the case where the temperature field adjusting member 13 is disposed in the second region 122 as an example, after the temperature field adjusting member 13 is added to the heating unit 1 to absorb the heat of the second region 122, compared with the case where the temperature field adjusting member 13 is not disposed in the heating unit 1 to absorb the heat of the second region 122, a part of the energy provided by the second region 122 is absorbed by the temperature field adjusting member 13 and a part of the energy provided by the second region 122 is absorbed by the second region 122, so that the energy absorbed by the second region 122 is reduced, and therefore, the temperature of the second region 122 is reduced during the preheating stage 5 and the pumping stage 6, and the time for the second region 122 to reach its maximum temperature during the preheating stage 5 is delayed. The energy absorbed by the first region 121 is almost unchanged, the temperature variation of the first region 121 is smaller than that of the second region 122, and the temperature of the first region 121 may have a smaller variation, or may be almost unchanged. When the first region 121 and the second region 122 have substantially the same heating efficiency, the time at which the second region 122 reaches its maximum temperature in the preheating stage 5 may be later than the time at which the first region 121 reaches its maximum temperature in the preheating stage 5.

For example 2: the temperature field adjusting member 13 is disposed in the second region 122, and the controller 41 controls the power supply 3 to supply power to the heating assembly 1 based on the temperature of the other heating regions except the second region 122, for example, based on the first region 121, because after the temperature field adjusting member 13 is added to the heating assembly 1 to absorb the heat of the second region 122, compared with the heating assembly 1 without the temperature field adjusting member 13 to absorb the heat of the second region 122, the temperature variation of the other heating regions except the second region 122 is smaller or almost unchanged, and therefore, the controller 41 controls the power supply 3 to supply power to the heating assembly 1 according to the temperature curve which is the same as or similar to the original temperature curve.

Based on this, after the temperature field adjusting member 13 is added to the heating unit 1 to absorb the heat of the second region 122, the temperature of the second region 122 is reduced in the preheating stage 5 and the pumping stage 6, and the time for the second region 122 to reach its maximum temperature in the preheating stage 5 is delayed compared to the case where the temperature field adjusting member 13 is not provided to absorb the heat of the second region 122 in the heating unit 1. When the first region 121 and the second region 122 have substantially the same heating efficiency, the time at which the second region 122 reaches its maximum temperature in the preheating stage 5 may be later than the time at which the first region 121 reaches its maximum temperature in the preheating stage 5.

For example 3: the temperature field adjusting member 13 is disposed in the second area 122, the controller 41 controls the power source 3 to provide power to the heating assembly 1 based on the temperature of the second area 122, and after the temperature field adjusting member 13 is added to the heating assembly 1 to absorb the heat of the second area 122, in order to make the temperature curve of the second area 122 conform to the original temperature curve, the controller 41 controls the power source 3 to increase the power provided to the heating assembly 1, so that the temperature of other heating areas except the second area 122, such as the first area 121, is increased compared with the temperature when the temperature field adjusting member 13 is not disposed to absorb the heat of the second area 122. Therefore, the time at which the first region 121 reaches its maximum temperature in the preheating stage 5 may be advanced, and the time at which the second region 122 reaches its maximum temperature in the preheating stage 5 may be later than the time at which the first region 121 reaches its maximum temperature in the preheating stage 5 when the first region 121 and the second region 122 have substantially the same heating efficiency.

As an example, referring to fig. 9, the temperature field adjusting member 13 may be disposed at the second region 122, and when the temperature of the first region 121 is reduced from its highest temperature in the preheating stage 5 to a temperature range corresponding to the first region 121 in the pumping stage 6, the second region 122 may remain in the preheating temperature range corresponding to the second region 122.

As an example, referring to fig. 9, the temperature field adjusting member 13 may be disposed at the second region 122, the first region 121 may have a temperature lower than that of the first region 121 when the preheating stage 5 reaches its highest temperature, a temperature gradient between the second region 122 and the first region 121 may be gradually decreased and then gradually increased during the second region 122 continues to be heated up to reach its highest temperature, and a temperature of the second region 122 may be higher than that of the first region 121 when the second region 122 reaches its highest temperature of the preheating stage 5. In the preheating stage 5, the maximum temperature of the second region 122 may be greater than or equal to the maximum temperature of the first region 121, or the maximum temperature of the second region 122 may be less than the maximum temperature of the first region 121.

As an example, it is possible to refer to fig. 9 that the temperature field adjusting member 13 is disposed at the second region 122, and the temperature difference between the highest temperature of the second region 122 and the highest temperature of the first region 121 in the preheating stage 5 is smaller than or equal to the temperature difference between the second region 122 and the first region 121 in the pumping stage 6.

As an example, it is possible to refer to fig. 9 that the temperature field adjusting member 13 is provided in the second region 122, and that the temperature of the second region 122 is greater than or equal to the temperature of the first region 121 in the pumping stage 6.

In an embodiment, the heating assembly 1 further comprises a temperature detector, wherein a sensing head 14 of the temperature detector is disposed between the heating body 12 and the temperature field adjusting member 13, and the temperature detector is used for detecting the temperature of the area where the sensing head 14 is disposed.

The sensing head 14 of the temperature detector may be fixed to the heating body 12 by means of the temperature field adjusting member 13 to simplify the structure of the heating assembly 1. The sensing head 14 of the temperature detector can absorb part of the heat of the area where the sensing head 14 is disposed.

The controller 41 may be connected to a temperature detector to acquire the temperature of the area where the sensing head 14 is disposed, and then the controller 41 may control the power supplied from the power supply 3 to the heating assembly 1 based on the acquired temperature.

It should be noted that, in other embodiments, referring to fig. 4, the sensing head 14 of the temperature detector may be disposed at other positions of the heating zone, avoiding the temperature field adjusting member 1, so as to detect the temperature at other positions. The controller 41 may then control the power provided by the power supply 3 to the heating assembly 1 based on the temperature at the other location.

Preferably, the sensing head 14 of the temperature detector is disposed on the heat concentration area of the heating body 12 to detect the temperature of the heat concentration area, and the controller 41 may control the power supplied from the power supply 3 to the heating assembly 1 based on the temperature of the heat concentration area. One of the first and second regions 121 and 122 may be located at a heat concentration region, or both the first and second regions 121 and 122 may be disposed at other regions than the heat concentration region.

After the temperature field adjusting member 13 is provided to absorb the heat of the first region 121 or the second region 122, the position of the heat concentration region of the heating body 12 is maintained unchanged, or the position of the heat concentration region is shifted, or the area of the heat concentration region is reduced, as compared with before the temperature field adjusting member 13 is not provided to absorb the heat of the first region 121 and the second region 122.

The inventive idea of the present application will be described in a specific embodiment.

Referring to fig. 1-5, the heating body 12 comprises a heating tube in which the receiving chamber 11 is formed, the heating tube having an upper end opening 126 at an upper end thereof into which the aerosol-generating article is inserted into the receiving chamber 11, a lower end opening 127 at a lower end thereof into which air is introduced into the receiving chamber 11, and a heating zone located between the upper end opening 126 and the lower end opening 127.

As an example, the first region 121 and the second region 122 are distributed along the longitudinal direction of the heating tube for heating the portions of the aerosol-generating article 2 corresponding to different heights in the longitudinal direction. The temperature field adjusting member 13 may adjust the distribution of the temperature field of the heating pipe in the longitudinal direction, or may adjust the temperature gradient of the first region 121 and the second region 122 in the longitudinal direction.

As an example, the heating assembly 1 further comprises an upper end cap 15 and a lower end cap 16. The upper end cap 15 is provided with an insertion opening 151 for inserting the aerosol-generating article 2 into the receiving chamber 11, and the lower end cap 16 is provided with an air inlet 161 for allowing cool air to enter the receiving chamber 11. The upper end cap 15 is connected to the upper end of the heating tube so that the upper end cap 15 can absorb heat from the heating zone near the upper end opening 126. The lower end cap 15 is connected to the lower end of the heating tube so that the lower end cap 16 can absorb heat from the heating zone near the lower end opening 127. Therefore, when the temperature field adjusting member 13 is not provided in the heating assembly 1, the amount of heat loss in the middle portion in the longitudinal direction of the heating zone is relatively small, and when the heating efficiency of the heating zone is uniform or the heating efficiencies of the first region 121 and the second region 122 are substantially the same, the temperature in the middle portion in the longitudinal direction of the heating zone may be higher than the temperatures at the upper and lower ends of the heating zone, that is, the heat concentrated region of the heating zone is located in the middle portion in the longitudinal direction of the heating zone. One of the first region 121 and the second region 122 may be located in a heat concentration region, or the first region 121 and the second region 122 may be located in other regions than the heat concentration region, and when the temperature field adjusting member 13 is disposed in the heating assembly 1 to absorb heat of the first region 121 or the second region 122, a temperature gradient of the first region 121 and the second region 122 in a longitudinal direction may be adjusted, or a distribution of a temperature field of the heating tube in the longitudinal direction may be adjusted.

In one embodiment, referring to fig. 2, 4 and 5, during the pumping phase, the temperature of the second region 122 is greater than or equal to the temperature of the first region 121. For example, the heating efficiency of the heating zone is uniform or the heating efficiency is substantially the same in the first region 121 and the second region 122, but the second region 122 is located in the heat concentrating region or the second region 122 is located closer to the heat concentrating region than the first region 121; or, for example, the heating efficiency of the second region 122 is greater than or equal to the heating efficiency of the first region 121.

As one example, the temperature field adjusting member 13 is disposed at the second region 122 and absorbs heat of the second region 122 to reduce the temperature gradient between the first region 121 and the second region 122.

As one example, the temperature field adjusting member 13 is disposed at the first region 121 and absorbs heat of the first region 121 to increase a temperature gradient between the first region 121 and the second region 122.

In one embodiment, referring to fig. 3, the temperature field adjusting member 13 is disposed in the second region 122 and absorbs heat of the second region 122, the first region 121 is located in the heat concentration region or is located closer to include the heat concentration region than the second region 122, and the second region 122 is disposed near the upper end opening 126 or near the lower end opening 127. Therefore, when the heating efficiency of the heating region is uniform or when the heating efficiencies of the first region 121 and the second region 122 are substantially the same, the temperature field adjusting member 13 absorbs the heat of the second region 122, and can increase the temperature gradient between the first region 121 and the second region 122.

In an embodiment, referring to fig. 2, 4 and 5, the heating zone further includes a third region 123, the first region 121 is disposed near the upper end opening 126, the third region 123 is disposed near the lower end opening 127, the second region 122 is disposed between the first region 121 and the third region 123, and the second region 122 is disposed at a longitudinally middle portion of the heating zone than the first region 121 and the third region 123. The second region 122 is located at the heat concentration region, or the second region 122 is located closer to the heat concentration region than the first region 121 and the third region 123, and the temperature field adjusting member 13 is disposed on the second region 122 and absorbs heat of the second region 122, which can reduce the temperature gradient between the third region 123 and the second region 122 and reduce the temperature gradient between the first region 121 and the second region 122.

In one example, cool air enters the accommodating chamber 11 from the lower end opening 127, so the heat loss of the third region 123 is greater than that of the first region 121, and thus the heat concentrating region of the heating region is closer to the upper end opening 126 when the temperature field adjusting member 13 is not provided in the heating assembly 1 to absorb the heat of the second region 122. After the temperature field adjusting member 13 is disposed, in order to equalize the temperature field in the longitudinal direction of the heating pipe, the distance L1 between the lower end of the temperature field adjusting member 13 and the lower end opening 127 may be larger than the distance L2 between the upper end of the temperature field adjusting member 13 and the upper end opening 126 along the longitudinal direction of the heating body 12, so that the temperature field adjusting member 13 is closer to the upper end opening 126.

In one example, the longitudinal length of the second region 122 may be equal to the longitudinal length of the temperature field adjustment member 13, i.e., the temperature field adjustment member 13 is capable of completely covering the second region 122.

The region between the upper end of the heating region and the upper end of the temperature field adjusting member 13 may be the first region 121, and the region between the lower end of the heating region and the lower end of the temperature field adjusting member 13 may be the third region 123.

In order to reduce the energy consumption of the heating assembly 1, the temperature field adjusting member 13 may be made to have a smaller longitudinal length, and thus the second region 122 has a smaller longitudinal length. More specifically, the length of the second region 122 may be smaller than both the length of the first region 121 and the length of the third region 123 in the longitudinal direction of the heating body 12. More specifically, the length of the second region 122 may be less than or equal to 1/2 of the length of the first region 121, or may be less than or equal to 1/3 of the length of the third region 123, or may be less than or equal to 1/3 of the length of the aerosol-forming substrate 21/heating tube.

The longitudinal length of the temperature field adjusting member 13 may be approximately equal to the longitudinal length of the heat concentration area.

When the temperature field adjusting member 13 is not provided in the heating assembly 1, the temperature of the second region 122 is higher than the temperature of the first region 121 and the temperature of the third region 123. After the temperature field adjusting member 13 is disposed in the heating assembly 1 to absorb the temperature of the second region 122, the heat absorbing capacity of the temperature field adjusting member 13 may be controlled by the length, thickness, etc. of the temperature field adjusting member 13, or by the material of the temperature field adjusting member 13, etc. such that the second region 122 reaches the highest temperature later than the first region 121 and the third region 123 in the preheating stage 5, and the temperature of the second region 122 is greater than or equal to the temperature of the first region 121 and/or the third region 123 in the pumping stage 6. In the pumping stage 6, the temperature difference between the second region 122 and the first region 121 or the third region 123 may be greater than or equal to the temperature difference between the first region 121 and the third region 123.

As one example, the temperature field adjuster 13 includes, but is not limited to, at least one of a heat shrink tube, PI film, PAEK-like material, PI material, and PBI material. The temperature field adjusting member 13 may also comprise a metal.

As an example, reference may be made to fig. 1, in which an aerosol-generating device is provided with a thermal insulation layer 7, the thermal insulation layer 7 being arranged around at least part of the heating zone and around the temperature field adjusting member 13.

The insulating layer 7 may comprise an air layer, part of the boundary of which is delimited by the heating zone. Taking the example that the temperature field adjusting member 13 is disposed in the second region 122, at least part of the other heating regions except the first region 121 or the second region 122 is surrounded by an air layer, and the other heating regions except the first region 121 or the second region 122 define at least part of the boundary of the air layer, so as to prevent the solid matter from absorbing the heat of the first region 121 or the other heating regions except the second region 122, thereby helping to reduce the energy consumption. The air layer may be a closed air layer or may be a negative pressure air layer.

Part of the boundary of the air layer is defined by the temperature field adjuster 13. The temperature field adjusting member 13 may be surrounded by an air layer, and the temperature field adjusting member 13 defines a part of the boundary of the air layer, and the air layer 7 is used to prevent heat on the temperature field adjusting member 13 from being conducted outwards. On the one hand, the amount of heat absorbed by the temperature field adjusting member 13 can be ensured to be in a preset range; on the other hand, it is possible to enable the heat absorbed by the temperature field adjustment member 13 to be temporarily stored in the temperature field adjustment member 13 and then to automatically release at least part of the absorbed heat to the first or second region 122 when appropriate, for example during the suction phase 6.

It is noted that the heating body comprises a heating tube as an alternative, not necessarily, and in other embodiments, reference may be made to fig. 6 and 7, wherein the heating body 12 comprises a heating pin, which is at least partially arranged in the receiving cavity 11 and which is at least partially inserted into the aerosol-forming substrate 21 when the aerosol-generating article 2 is received in the receiving cavity 11.

In the embodiment shown in fig. 6 and 7, the heating pin is of a hollow structure, the temperature field adjusting member 13 is disposed inside the heating pin and contacts the inner wall corresponding to the second region 122, and the first region 121 corresponds to the cavity inside the heating pin. The heating assembly 1 further comprises a fixing seat 17, one end of the heating needle is inserted into the fixing seat 17 to be fixed, and the fixing seat 17 can absorb part of heat on the heating needle. As an example, referring to fig. 6, the first region 121 may be disposed near the holder 17 such that the first region 121 is located between the second region 122 and the holder 17, and the second region 122 is located at the heat concentration region or is located closer to the heat concentration region than the first region 121, and the temperature field adjuster 13 reduces the temperature gradient between the first region 121 and the second region 122 by absorbing heat of the second region 122. As an example, referring to fig. 7, the second region 122 may be disposed near the holder 17 such that the second region 122 is located between the first region 121 and the holder 17, and the first region 121 is located at a heat concentration region or is located closer to the heat concentration region than the second region 122, and the temperature field adjuster 13 increases the temperature gradient between the first region 121 and the second region 122 by absorbing heat of the second region 122.

In the heating assembly and the aerosol-generating device described above, the heating region on the heating body is for heating the aerosol-generating article, the heating region comprises a first region and a second region, and the temperature field adjusting member is capable of absorbing a portion of heat of the second region, thereby adjusting a temperature gradient between the first region and the second region. Therefore, the distribution of the temperature field on the heating body can be changed by selecting the temperature field adjusting piece so as to meet the heating requirement of the adaptive aerosol-generating product and the requirement of a user on the sucking taste.

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

1. An aerosol-generating device, comprising:

2. Aerosol-generating device according to claim 1, characterized in that the heating body comprises a heating tube, the interior of which has a receiving cavity for receiving an aerosol-generating article at least partially, the upper end of which has an upper end opening for the aerosol-generating article to be inserted into the receiving cavity, the lower end has a lower end opening for air to enter the receiving cavity, the heating zone being located between the upper end opening and the lower end opening, and the first and the second zone being distributed in the longitudinal direction of the heating tube.

3. An aerosol-generating device according to claim 2, wherein the heating efficiency of the first and second regions is substantially the same.

4. An aerosol-generating device according to claim 2, wherein the temperature of the second region is greater than or equal to the temperature of the first region during the pumping phase.

5. An aerosol-generating device according to claim 4, wherein the temperature field adjustment member is arranged at the second region, the temperature field adjustment member being configured to reduce a temperature gradient between the first region and the second region.

6. An aerosol-generating device according to claim 4, wherein the temperature field adjustment member is arranged at the first region, the temperature field adjustment member being configured to increase the temperature gradient between the first region and the second region.

7. An aerosol-generating device according to claim 2, wherein the time at which the second region reaches its maximum temperature is later than the time at which the first region reaches its maximum temperature during the pre-heating stage.

8. The aerosol-generating device of claim 2, wherein the heating zone further comprises a third region, the first region being disposed proximate the upper end opening, the third region being disposed proximate the lower end opening, the second region being located between the first region and the third region.

9. Aerosol-generating device according to claim 8, characterized in that the distance between the lower end of the temperature field adjusting member and the lower end opening is greater than the distance between the upper end of the temperature field adjusting member and the upper end opening in the longitudinal direction of the heating body; or alternatively

The length of the second region is smaller than the length of the first region and the length of the third region along the longitudinal direction of the heating body; or alternatively

The length of the second area is less than or equal to 1/3 of the length of the heating pipe.

10. An aerosol-generating device according to claim 2, wherein the aerosol-generating device has an insulating layer therein, the insulating layer being disposed around at least part of the heating zone and around the temperature field adjustment member.

11. An aerosol-generating device according to claim 10, wherein the insulating layer comprises an air layer, a portion of the boundary of the air layer being defined by the heating zone and the temperature field adjuster.

12. An aerosol-generating device according to claim 1, wherein the temperature field adjustment member comprises a heat shrink tube, PI film, PAEK-like material, PI material or PBI material.

13. Aerosol-generating device according to claim 1, further comprising a temperature detector, the sensing head of which is arranged between the heating body and the temperature field adjusting member.

14. An aerosol-generating device according to claim 13, further comprising a power source and a controller configured to obtain the temperature sensed by the temperature detector and to control the power supplied by the power source to the heating body based on the temperature.