Aerosol-generating device

Abstract

The embodiment of the invention provides an aerosol generating device which comprises a heating body which comprises a heating area used for heating an aerosol generating product, and the heating area comprises a first area and a second area; and the temperature field adjusting piece is arranged on one of the first area and the second area and is configured to absorb part of heat of the arranged area so as to adjust the temperature gradient between the first area and the second area.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating device. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] An example of such a product is a heating device, which releases a compound by heating rather than burning a material. For example, the material may be an aerosol-generating article containing tobacco or other non-tobacco products, which may or may not contain nicotine.

[0004] The known heating device includes a heater. After the heating device is assembled, the temperature field of the heating element needs to be adjusted according to the heating requirements of the adapted tobacco product and the user's requirements for the smoking taste. However, after the heater is manufactured, the heating track or heating element on it is fixed and cannot be changed. Rework and reconstruction will increase production costs. Summary of the invention

[0005] The present application provides an aerosol generating device, which can adjust the temperature field on a heating body as needed.

[0006] One embodiment of the present application provides an aerosol generating device, comprising:

[0007] a heating body comprising a heating zone for heating the aerosol-generating article, the heating zone comprising a first region and a second region; and

[0008] The temperature field adjusting member is arranged on one of the first region and the second region, and is configured to absorb part of the heat of the area in which it is arranged so as to adjust the temperature gradient between the first region and the second region.

[0009] In the above-mentioned aerosol generating device, the heating area on the heating body is used to heat the aerosol generating product, and the heating area includes a first area and a second area. The temperature field adjusting member can absorb part of the heat of the first area or the second area, thereby adjusting the temperature gradient between the first area and the second area. Therefore, the temperature field distribution on the heating body can be changed by selecting the temperature field adjusting member to meet the heating requirements of the adapted aerosol generating product and the user's requirements for the puffing taste. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0011] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0012] Figure 2 is a schematic diagram of a heating assembly provided by an embodiment;

[0013] Figure 3 is a schematic diagram of a heating assembly provided in another embodiment;

[0014] Figure 4 is a schematic diagram of a heating assembly provided in another embodiment;

[0015] Figure 5 is a schematic diagram of a heating assembly provided in another embodiment;

[0016] Figure 6 is a schematic diagram of a heating assembly provided in another embodiment;

[0017] Figure 7 is a schematic diagram of a heating assembly provided in another embodiment;

[0018] Figure 8 1 is a temperature curve of different regions on the heating body when the temperature field adjustment member is not provided in the heating assembly provided in an embodiment, wherein T1 is a temperature curve corresponding to the first region, T2 is a temperature curve corresponding to the second region, and T3 is a temperature curve corresponding to the third region;

[0019] Fig. 9 It is a temperature curve of different areas on the heating body when a temperature field adjustment member is provided in the heating assembly provided in an 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;

[0020] In the figure:

[0021] 1. Heating assembly; 11. Accommodating cavity; 12. Heating body; 121. First area; 122. Second area; 123. Third area; 124. Base; 125. Heating element; 126. Upper opening; 127. Lower opening; 13. Temperature field adjustment member; 14. Sensor head; 15. Upper end cover; 151. Insertion port; 16. Lower end cover; 161. Air inlet; 17. Fixing seat;

[0022] 2. Aerosol generating products;

[0023] 3. Power supply;

[0024] 4. Circuit board; 41. Controller; 5. Preheating stage; 6. Suction stage; 7. Thermal insulation layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only one area embodiment of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] The terms "first", "second", "third" in the present application are only used for descriptive purposes, and cannot be interpreted as indicating or suggesting relative importance or implicitly indicating the quantity or order of the indicated technical features. In the present application embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement conditions between the components under a certain posture (as shown in the accompanying drawings), and if the posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0027] Reference to "embodiments" herein means that the features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be one or more central elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0029] You can refer to Figure 1One embodiment of the present application provides a heating component 1 and an aerosol generating device including the heating component 1 , wherein the aerosol generating device is a device that is coupled or interacts with an aerosol generating article 2 to form an inhalable aerosol.

[0030] As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate 21 that, when heated, releases volatile compounds that can form an aerosol. In an embodiment, the aerosol-generating article is removably coupled to an aerosol-generating device. The article may be disposable or reusable.

[0031] Aerosol-forming substrate 21 may include a solid aerosol-forming substrate. The solid aerosol-forming substrate may include a tobacco-containing material, which contains volatile tobacco flavor compounds released from the aerosol-forming substrate when heated. The solid aerosol-forming substrate may include a non-tobacco material. The solid aerosol-forming substrate may include a tobacco-containing material and a non-tobacco material.

[0032] Aerosol formation matrix 21 can comprise liquid aerosol formation matrix.Liquid aerosol formation matrix can comprise the liquid of the tobacco-containing substance that contains volatile tobacco flavor component, can also be the liquid that comprises non-tobacco substance.Liquid aerosol formation matrix can comprise water, solvent, ethanol, plant extract, spices, flavoring agent or vitamin mixture etc., and spices can comprise betel nut extract, menthol, European mint, green mint oil, various fruity fragrance components etc., but is not limited to this.Flavoring agent can comprise the composition that can provide various fragrance or local flavor to the user.Vitamin mixture can be the mixture that is mixed with at least one in vitamin A, vitamin B, vitamin C and vitamin E, but is not limited to this.

[0033] The aerosol generating device has a containing cavity 11 inside, and at least a part of the aerosol generating product 2 can be engaged in the containing cavity 11. The aerosol generating device can be an electrically operated device, and the heating component 1 adapted for the aerosol generating device can be an electric heater, so the heating component 1 can generate heat when provided with electricity or a magnetic field, and at least the regional heat is transferred to the aerosol generating product 2 in the containing cavity 11, so that the aerosol generating product 2 is heated.

[0034] The aerosol generating device further includes a power source 3 and a circuit board 4. The power source 3 may include any suitable battery or battery cell. The circuit board 4 has one or more controllers 41. The circuit board 4 is electrically connected to the power source 3 and the heating component 1. The controller 41 can control the power source 3 to provide power or a magnetic field to the heating component 1. The circuit board 4 can also control other operations of the aerosol generating device, such as controlling a sensory prompter in the aerosol generating device to generate sensory signals such as sound, light or vibration.

[0035] For more specific information, please refer to Figure 2-Figure 7 The heating assembly 1 includes a heating body 12 and a temperature field adjustment member 13. The heating body 12 has a heating zone. The heating body 12 mainly heats the aerosol-forming substrate 21 of the aerosol-generating product 2 by heat released by 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 heat-conducting element. It should be noted that the heating zone may heat the aerosol-generating product 2 by self-heating and / or by absorbing heat from other components.

[0036] The heating zone may include a first region 121 and a second region 122, and the first region 121 and the second region 122 are arranged corresponding to different parts of the aerosol-forming substrate 21, so as to heat different parts of the aerosol-forming substrate 21 respectively. The temperature field adjustment member 13 is arranged on one of the first region 121 and the second region 122, and is used to absorb part of the heat of the region where it is arranged, so as to adjust the temperature gradient between the first region 121 and the second region 122. Therefore, the temperature field distribution on the heating body 12 can be changed by selecting the temperature field adjustment member 13 while the structural characteristics of the heating body 12 remain unchanged. The heat absorption ability of the temperature field adjustment member 13 made of different materials or different sizes is different. Therefore, the temperature gradient between the first region 121 and the second region 122 can be made different by selecting different temperature field adjustment members 13, so as to meet the different heating requirements of the various aerosol-generating products 2 adapted and the different requirements of users for the puffing taste.

[0037] In one embodiment, the temperature field adjustment member 13 is used to reduce the temperature gradient between the first region 121 and the second region 122 to balance the temperature field of the first region 121 and the second region 122 and reduce the temperature difference between the first region 121 and the second region 122, which is beneficial to more uniformly heating the aerosol-forming substrate 21, increasing the amount of aerosol and thus improving the taste, or preventing the local temperature of the aerosol-forming substrate 21 from being too high so that the part of the aerosol-forming substrate 21 is burnt or burned, or preventing the local temperature of the aerosol-forming substrate 21 from being too low so that the part of the aerosol-forming substrate 21 is not fully baked.

[0038] In one embodiment, the temperature field adjustment member 13 is used to increase the temperature gradient between the first region 121 and the second region 122. In some aerosol generating products 2, the aerosol forming matrix 21 has a variety of different aroma compounds, and the various different aroma compounds have different volatilization temperatures. In one example, by increasing the temperature gradient or temperature difference between the first region 121 and the second region 122, so that there are a variety of different heating temperatures between the first region 121 and the second region 122 to heat the aerosol forming matrix 21, it helps to promote the volatilization of the various different aroma compounds in the aerosol forming matrix 21, thereby enriching the taste. In one example, by increasing the temperature gradient or temperature difference between the first region 121 and the second region 122, the volatiles of one or more different aroma compounds in the aerosol are reduced, or the volatiles of one or more different aroma compounds are prevented from having taste changes, thereby improving the taste.

[0039] In one embodiment, reference may be made to Figure 2-Figure 4 The heating body 12 includes a heat-generating material. The heat-generating material may include a resistive material that can generate Joule heat or infrared rays when powered on, or the heat-generating material may include a sensing material that can generate heat in a changing magnetic field. That is, at least part of the material used to prepare the heating body 12 is capable of generating heat.

[0040] Among them, 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 composite materials 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, 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 superalloys based on nickel, iron, and cobalt, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0041] The sensing material may include metal or carbon. In one embodiment, the sensing material may include a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. In one embodiment, the sensing material includes a nickel-iron alloy. In one embodiment, the sensing material includes 400 series stainless steel, including 410 grade, 420 grade, or 430 grade stainless steel.

[0042] In one embodiment, reference may be made to Figure 5The heating body 12 includes a substrate 124 and a heating element 125 disposed on the substrate 124. The heating element 125 includes a resistive material or a sensing material. The heating element 125 may be a heating coating or a heating track formed on the substrate 234. The heating element 125 may include a heating net or a heating wire joined to the substrate 124. The substrate 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 may transfer the heat released by the heating element 125 to the aerosol-forming substrate 21.

[0043] In one embodiment, the preparation material of the first region 121 includes a heating material, or a heating element 125 is provided on the first region 121, so that the first region 121 can generate heat, the preparation material of the second region 122 includes an insulating material, or the heating element 125 is not provided on the second region 122, or for other reasons, the second region 122 cannot generate heat, the second region 122 heats up by absorbing part of the heat released by the first region 121 or other components, and the second region 122 heats the aerosol generating product 2 by releasing part of the heat it absorbs.

[0044] In an example where the second region 122 is heated by absorbing heat, the second region 122 may include a thermally conductive material, which may be understood as a material having a thermal conductivity of at least 40 W / (m·k), preferably at least 100 W / (m·k), more preferably at least 150 W / (m·k), and most preferably at least 200 W / (m·k) at 23° C. and 50% relative humidity. Suitable thermally conductive materials include, but are not limited to, graphite, graphene, aluminum, copper, zinc, steel, silver, thermally conductive polymers, or any combination or alloy thereof.

[0045] In an example in which the second region 122 is heated by absorbing heat, the first region 121 and the second region 122 may have the same heating efficiency, or may have different heating efficiencies.

[0046] In one embodiment, the first region 121 and the second region 122 have substantially the same heating efficiency, that is, the first region 121 and the second region 122 per unit area can release substantially the same amount of heat at the same time. As an example, the heat-generating material or the heat-generating element 125 is evenly distributed in the first region 121 and the second region 122. As an example, the heat-generating material or the heat-generating element 125 is evenly distributed in the entire heating area.

[0047] You can refer to Figure 8 and Fig. 9The heating stage of the aerosol generating product 2 generally includes a preheating stage 5 and a puffing stage 6. The preheating stage 5 is used to quickly or substantially heat the heating component 1 or the aerosol generating product 2 from room temperature or from the initial temperature to the target temperature to meet the user's need to quickly take the first puff. The user's puffing of the aerosol generating product 2 mainly occurs in the puffing stage 6.

[0048] The temperature field adjustment member 13 is arranged in the second area 122. The temperature field adjustment member 13 absorbs the heat of the second area 122, and can delay the time when the second area 122 reaches its maximum temperature in the preheating stage 5, or advance the time when the first area 121 reaches its maximum temperature in the preheating stage 5, or make the time when the second area 122 reaches its maximum temperature in the preheating stage 5 later than the time when the first area 121 reaches its maximum temperature in the preheating stage 5.

[0049] For example, the first region 121 and the second region 122 have substantially the same heating efficiency. When the temperature field adjustment member 13 is not provided in the heating component 1 to absorb the heat of the second region 122, since the first region 121 and the second region 122 have substantially the same heating efficiency, the first region 121 and the second region 122 simultaneously reach their respective maximum temperatures at time t1 after the start of heating. When the heating component 1 has a temperature field adjustment 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, and 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. Among them, t1 may be substantially equal to t2, or t1 may be different from t2.

[0050] As an example, while a temperature field adjustment member 13 is added to the heating component 1 to absorb the heat of the first area 121 or the second area 122, the original control logic is used to control the power supply 3 to provide power to the heating component 1. In other words, the heating component 1 is not provided with a temperature field adjustment member 13 to absorb the heat of the first area 121 or the second area 122, and the heating component 1 is provided with a temperature field adjustment member 13 to absorb the heat of the first area 121 or the second area 122, and the control logic is the same.

[0051] For example 1: the suction stage 6 may include multiple time periods, and the controller 41 is configured to control the power supply 3 to supply preset energy corresponding to each time period to the heating component 1 according to the time period. The "preset energy" is a pre-set energy, which is an energy supply amount that does not need to be regulated according to the real-time temperature of the heating component 1. In other words, the amount of preset energy supplied by the power supply 3 to the heating component 1 in the corresponding time period is basically not affected by the temperature of the heating component 1. The controller 41 may not regulate the amount of energy supplied to the heating component 1 in the corresponding time period based on the temperature feedback of the heating component 1.

[0052] Based on this, taking the temperature field adjustment member 13 as an example, after the temperature field adjustment member 13 is added to the heating component 1 to absorb the heat of the second region 122, compared with the heating component 1 not having the temperature field adjustment member 13 to absorb the heat of the second region 122, part of the energy provided by the corresponding second region 122 is absorbed by the temperature field adjustment member 13, and part is absorbed by the second region 122, thereby reducing the energy absorbed by the second region 122. Therefore, in the preheating stage 5 and the suction stage 6, the temperature of the second region 122 will decrease, and the time for the second region 122 to reach its maximum temperature in the preheating stage 5 will be delayed. The energy absorbed by the first region 121 is almost unchanged, and the temperature change of the first region 121 is relatively small relative to the temperature change of the second region 122. The temperature of the first region 121 can have a smaller change, or can remain almost unchanged. When the first region 121 and the second region 122 have approximately the same heating efficiency, the time when the second region 122 reaches its maximum temperature in the preheating stage 5 will be later than the time when the first region 121 reaches its maximum temperature in the preheating stage 5.

[0053] Example 2: The temperature field adjustment component 13 is set in the second area 122, and the controller 41 controls the power supply 3 to provide power to the heating component 1 based on the temperature of other heating zones outside the second area 122, for example, based on the temperature of the first area 121. After the temperature field adjustment component 13 is added to the heating component 1 to absorb the heat of the second area 122, the temperature change of other heating zones outside the second area 122 is smaller or remains almost unchanged compared to the case where the temperature field adjustment component 1 is not set in the heating component 1 to absorb the heat of the second area 122. Therefore, the controller 41 controls the power supply 3 to provide power to the heating component 1 according to a temperature curve that is the same as or similar to the original temperature curve.

[0054] Based on this, after the temperature field adjustment member 13 is added to the heating component 1 to absorb the heat of the second region 122, compared with the case where the temperature field adjustment member 13 is not provided in the heating component 1 to absorb the heat of the second region 122, the temperature of the second region 122 will be lower in the preheating stage 5 and the suction stage 6, and the time for the second region 122 to reach its maximum temperature in the preheating stage 5 will be delayed. When the first region 121 and the second region 122 have substantially the same heating efficiency, the time for the second region 122 to reach its maximum temperature in the preheating stage 5 will be later than the time for the first region 121 to reach its maximum temperature in the preheating stage 5.

[0055] Example 3: The temperature field adjustment member 13 is set in the second area 122, and the controller 41 controls the power supply 3 to provide power to the heating component 1 based on the temperature of the second area 122. After the temperature field adjustment member 13 is added to the heating component 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 will control the power supply 3 to increase the power provided to the heating component 1, thereby causing the temperature of other heating areas outside the second area 122, such as the first area 121, to increase compared to the temperature when the temperature field adjustment member 13 is not set to absorb the heat of the second area 122. Therefore, the time when the first area 121 reaches its maximum temperature in the preheating stage 5 will be advanced. When the first area 121 and the second area 122 have approximately the same heating efficiency, the time when the second area 122 reaches its maximum temperature in the preheating stage 5 will be later than the time when the first area 121 reaches its maximum temperature in the preheating stage 5.

[0056] As an example, see Fig. 9 The temperature field adjustment member 13 is disposed in the second region 122 . When the temperature of the first region 121 is reduced from its highest temperature in the preheating stage 5 to the temperature range corresponding to the first region 121 in the suction stage 6 , the second region 122 may still be in the preheating temperature range corresponding to the second region 122 .

[0057] As an example, see Fig. 9 , the temperature field adjustment member 13 is arranged in the second region 122, when the first region 121 reaches its maximum temperature in the preheating stage 5, the temperature of the second region 122 is lower than the temperature of the first region 121, and in the process of the second region 122 continuing to heat up to reach its maximum temperature, the temperature gradient between the second region 122 and the first region 121 may first gradually decrease, and then gradually increase, and when the second region 122 reaches its maximum temperature in the preheating stage 5, the temperature of the second region 122 may be higher than the temperature of the first region 121. 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.

[0058] As an example, see Fig. 9 The temperature field adjustment member 13 is disposed in the second region 122 , and the temperature difference between the maximum temperature of the second region 122 and the maximum temperature of the first region 121 in the preheating stage 5 is less than or equal to the temperature difference between the second region 122 and the first region 121 in the suction stage 6 .

[0059] As an example, see Fig. 9 The temperature field adjustment member 13 is disposed in the second region 122 , and in the suction stage 6 , the temperature of the second region 122 is greater than or equal to the temperature of the first region 121 .

[0060] In one embodiment, the heating assembly 1 further comprises a temperature detector, the sensing head 14 of the temperature detector is arranged between the heating body 12 and the temperature field adjusting member 13 , and the temperature detector is used to detect the temperature of the area where the sensing head 14 is arranged.

[0061] The temperature field adjusting member 13 can also be used to fix the sensing head 14 of the temperature detector on the heating body 12 to simplify the structure of the heating assembly 1. In addition, the sensing head 14 of the temperature detector can also absorb part of the heat of the area where the sensing head 14 is set.

[0062] The controller 41 may be connected to a temperature detector to obtain the temperature of the area where the sensing head 14 is disposed, and then the controller 41 may control the power provided by the power supply 3 to the heating assembly 1 based on the obtained temperature.

[0063] It should be noted that, in other embodiments, reference may be made to Figure 4 The sensing head 14 of the temperature detector can be arranged at other positions of the heating zone away from the temperature field adjustment member 1 to detect the temperature at other positions. Then the controller 41 can control the power provided by the power supply 3 to the heating component 1 based on the temperature at other positions.

[0064] Preferably, the sensing head 14 of the temperature detector is arranged on the heat concentration area of ​​the heating body 12 to detect the temperature of the heat concentration area, and the controller 41 can control the power provided by the power supply 3 to the heating component 1 based on the temperature of the heat concentration area. One of the first area 121 and the second area 122 can be located in the heat concentration area, or the first area 121 and the second area 122 can be arranged in other areas outside the heat concentration area.

[0065] Compared with before the temperature field adjustment member 13 is set to absorb the heat of the first area 121 and the second area 122, after the temperature field adjustment member 13 is set to absorb the heat of the first area 121 or the second area 122, the position of the heat concentration area of ​​the heating body 12 remains unchanged, or the position of the heat concentration area is offset, or the area of ​​the heat concentration area is reduced.

[0066] The inventive concept of the present application will be described below with reference to a specific embodiment.

[0067] You can refer to Figure 1-Figure 5 The heating body 12 includes a heating tube, and the accommodating cavity 11 is formed in the heating tube. The upper end of the heating tube has an upper opening 126 for inserting the aerosol generating product into the accommodating cavity 11, and the lower end has a lower opening 127 for allowing air to enter the accommodating cavity 11. The heating zone is located between the upper opening 126 and the lower opening 127.

[0068] As an example, the first region 121 and the second region 122 are distributed along the longitudinal direction of the heating tube, and are used to heat the parts corresponding to different heights in the longitudinal direction of the aerosol generating article 2. The temperature field adjusting member 13 can adjust the distribution of the temperature field of the heating tube in the longitudinal direction, or can adjust the temperature gradient of the first region 121 and the second region 122 in the longitudinal direction.

[0069] As an example, the heating assembly 1 further includes an upper end cover 15 and a lower end cover 16. The upper end cover 15 is provided with an insertion port 151 for inserting the aerosol generating product 2 into the accommodating chamber 11, and the lower end cover 16 is provided with an air inlet 161 for allowing cold air to enter the accommodating chamber 11. The upper end cover 15 is connected to the upper end of the heating tube, so the upper end cover 15 can absorb the heat of the heating zone near the upper end opening 126. The lower end cover 15 is connected to the lower end of the heating tube, so the lower end cover 16 can absorb the heat of the heating zone near the lower end opening 127. Therefore, when the temperature field adjustment member 13 is not provided in the heating assembly 1, the heat loss in the middle part of the longitudinal direction of the heating zone is relatively small. When the heating efficiency of the heating zone is uniform or the heating efficiency of the first area 121 and the second area 122 is approximately the same, the temperature in the middle part of the longitudinal direction of the heating zone will be higher than the temperature at the upper and lower ends of the heating zone, that is, the heat concentration area of ​​the heating zone is located in the middle part of the longitudinal direction of the heating zone. One of the first region 121 and the second region 122 can be located in the heat concentration area, or the first region 121 and the second region 122 can both be set in other areas outside the heat concentration area. When a temperature field adjustment member 13 is set in the heating component 1 to absorb the heat of the first region 121 or the second region 122, the temperature gradient of the first region 121 and the second region 122 in the longitudinal direction will be adjusted, or the temperature field distribution of the heating tube in the longitudinal direction will be adjusted.

[0070] In one embodiment, reference may be made to Figure 2 , Figure 4 and Figure 5 , in the suction stage, the temperature of the second area 122 is greater than or equal to the temperature of the first area 121. For example, the heating efficiency of the heating area is uniform or the heating efficiency in the first area 121 and the second area 122 is approximately the same, but the second area 122 is located in the heat concentration area, or the second area 122 is closer to the heat concentration area than the first area 121; or for example, the heating efficiency of the second area 122 is greater than or equal to the heating efficiency of the first area 121.

[0071] As an example, the temperature field adjusting member 13 is disposed in the second region 122 and absorbs the heat of the second region 122 , thereby reducing the temperature gradient between the first region 121 and the second region 122 .

[0072] As an example, the temperature field adjusting member 13 is disposed in the first region 121 and absorbs the heat of the first region 121 , thereby increasing the temperature gradient between the first region 121 and the second region 122 .

[0073] In one embodiment, reference may be made to Figure 3 , the temperature field adjusting member 13 is arranged in the second region 122 and absorbs the heat of the second region 122, the first region 121 is located in the heat concentration region or is closer to the heat concentration region than the second region 122, and the second region 122 is arranged near the upper end opening 126 or near the lower end opening 127. Therefore, when the heating efficiency of the heating zone is uniform or the heating efficiency of the first region 121 and the second region 122 is substantially the same, the temperature field adjusting member 13 absorbs the heat of the second region 122 to increase the temperature gradient between the first region 121 and the second region 122.

[0074] In one embodiment, reference may be made to Figure 2 , Figure 4 and Figure 5 The heating zone also includes a third zone 123. The first zone 121 is arranged near the upper opening 126, the third zone 123 is arranged near the lower opening 127, and the second zone 122 is located between the first zone 121 and the third zone 123. Compared with the first zone 121 and the third zone 123, the second zone 122 is arranged in the middle of the longitudinal direction of the heating zone. The second zone 122 is located in the heat concentration area, or the second zone 122 is closer to the heat concentration area than the first zone 121 and the third zone 123. The temperature field adjustment member 13 is arranged on the second zone 122 and absorbs the heat of the second zone 122, which can reduce the temperature gradient between the third zone 123 and the second zone 122 and reduce the temperature gradient between the first zone 121 and the second zone 122.

[0075] In one example, cold air enters the accommodating cavity 11 from the lower opening 127, so the heat loss of the third area 123 is greater than the heat loss of the first area 121. Therefore, when the temperature field adjustment member 13 is not provided in the heating assembly 1 to absorb the heat of the second area 122, the heat concentration area of ​​the heating zone is closer to the upper opening 126. After the temperature field adjustment member 13 is provided, in order to balance the temperature field in the longitudinal direction of the heating tube, along the longitudinal direction of the heating body 12, the distance L1 between the lower end of the temperature field adjustment member 13 and the lower opening 127 can be made greater than the distance L2 between the upper end of the temperature field adjustment member 13 and the upper opening 126, so that the temperature field adjustment member 13 is closer to the upper opening 126.

[0076] In an example, the longitudinal length of the second region 122 may be equal to the longitudinal length of the temperature field adjusting member 13 , that is, the temperature field adjusting member 13 can completely cover the second region 122 .

[0077] The area between the upper end of the heating zone and the upper end of the temperature field adjusting member 13 may be the first area 121 , and the area between the lower end of the heating zone and the lower end of the temperature field adjusting member 13 may be the third area 123 .

[0078] In order to reduce the energy consumption of the heating assembly 1, the temperature field adjustment member 13 may have a smaller longitudinal length, so the second region 122 has a smaller longitudinal length. More specifically, along the longitudinal direction of the heating body 12, 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. 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.

[0079] The longitudinal length of the temperature field adjusting member 13 may be approximately equal to the longitudinal length of the heat concentration area.

[0080] When the temperature field adjustment 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 adjustment member 13 is provided in the heating assembly 1 to absorb the temperature of the second region 122, the heat absorption capacity of the temperature field adjustment member 13 can be controlled by the length, thickness and other dimensions of the temperature field adjustment member 13, or by the material of the temperature field adjustment member 13, so that in the preheating stage 5, the second region 122 reaches the highest temperature later than the first region 121 and the third region 123, and in the suction stage 6, 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 suction stage 6, the temperature difference between the second region 122 and the first region 121 or the third region 123 can be greater than or equal to the temperature difference between the first region 121 and the third region 123.

[0081] As an example, the temperature field adjusting member 13 includes but is not limited to at least one of a heat shrink tube, a PI film, a PAEK material, a PI material, and a PBI material. The temperature field adjusting member 13 may also include metal.

[0082] As an example, see Figure 1 The aerosol generating device has a heat insulation layer 7 therein, and the heat insulation layer 7 surrounds at least a part of the heating zone and surrounds the temperature field adjusting member 13 .

[0083] The heat-insulating layer 7 may include an air layer, and part of the boundary of the air layer is defined by the heating zone. Taking the temperature field adjustment member 13 disposed in the second region 122 as an example, at least part of the other heating zones outside the first region 121 or the second region 122 are surrounded by the air layer, and the other heating zones outside the first region 121 or the second region 122 define at least part of the boundary of the air layer to prevent solid matter from absorbing the heat of the first region 121 or the other heating zones outside the second region 122, which helps to reduce energy consumption. The air layer may be a closed air layer, or may be a negative pressure air layer.

[0084] Part of the boundary of the air layer is defined by the temperature field adjustment member 13. The temperature field adjustment member 13 may also be surrounded by the air layer, and the temperature field adjustment member 13 defines part of the boundary of the air layer, and the air layer 7 is used to prevent the heat on the temperature field adjustment member 13 from being conducted outward. On the one hand, it can ensure that the amount of heat absorbed by the temperature field adjustment member 13 is within a preset range; on the other hand, the heat absorbed by the temperature field adjustment member 13 can be temporarily stored in the temperature field adjustment member 13, and then at an appropriate time, such as in the suction stage 6, at least part of the absorbed heat is automatically released to the first area or the second area 122.

[0085] It should be noted that the heating element including the heating tube is optional but not mandatory. In other embodiments, reference may be made to Figure 6 and Figure 7 The heating body 12 includes a heating needle, at least a portion of which is arranged in the accommodating cavity 11 , and when the aerosol generating article 2 is received in the accommodating cavity 11 , at least a portion of the heating needle is inserted into the aerosol forming matrix 21 .

[0086] In such Figure 6 and Figure 7 In the embodiment shown, the heating needle is a hollow structure, the temperature field adjustment member 13 is arranged inside the heating needle and contacts the inner wall corresponding to the second area 122, and the first area 121 corresponds to the cavity inside the heating needle. The heating assembly 1 also includes a fixing seat 17, one end of the heating needle is inserted into the fixing seat 17 and fixed, and the fixing seat 17 can absorb part of the heat on the heating needle. As an example, you can refer to Figure 6 , the first area 121 is arranged close to the fixing seat 17, so that the first area 121 is located between the second area 122 and the fixing seat 17, and the second area 122 is located in the heat concentration area or closer to the heat concentration area than the first area 121, and the temperature field adjustment member 13 reduces the temperature gradient between the first area 121 and the second area 122 by absorbing the heat of the second area 122. As an example, you can refer to Figure 7The second region 122 is arranged close to the fixing seat 17, so that the second region 122 is located between the first region 121 and the fixing seat 17, the first region 121 is located in the heat concentration area or is closer to the heat concentration area than the second region 122, and the temperature field adjustment member 13 increases the temperature gradient between the first region 121 and the second region 122 by absorbing the heat of the second region 122.

[0087] In the above-mentioned heating assembly and aerosol generating device, the heating area on the heating body is used to heat the aerosol generating product, and the heating area includes a first area and a second area, and the temperature field adjusting member can absorb part of the heat of the second area, thereby adjusting the temperature gradient between the first area and the second area. Therefore, the temperature field distribution on the heating body can be changed by selecting the temperature field adjusting member to meet the heating requirements of the adapted aerosol generating product and the user's requirements for the puffing taste.

[0088] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An aerosol generating device, characterized in that: include: a heating body comprising a heating zone for heating the aerosol-generating article, the heating zone comprising a first region and a second region; and The temperature field adjusting member is arranged on one of the first region and the second region, and is configured to absorb part of the heat of the area in which it is arranged so as to adjust the temperature gradient between the first region and the second region.

2. The aerosol generating device according to claim 1, characterized in that The heating body includes a heating tube, the interior of the heating tube has a accommodating cavity for accommodating at least a portion of the aerosol generating product, the upper end of the heating tube has an upper opening for inserting the aerosol generating product into the accommodating cavity, and the lower end has a lower opening for air to enter the accommodating cavity, the heating zone is located between the upper opening and the lower opening, and the first area and the second area are distributed along the longitudinal direction of the heating tube.

3. The aerosol generating device according to claim 2, characterized in that The heating efficiency of the first region and the second region is substantially the same.

4. The aerosol generating device according to claim 2, characterized in that During the suction phase, the temperature of the second region is greater than or equal to the temperature of the first region.

5. The aerosol generating device according to claim 4, characterized in that The temperature field adjusting member is disposed in the second region, and the temperature field adjusting member is configured to reduce a temperature gradient between the first region and the second region.

6. The aerosol generating device according to claim 4, characterized in that The temperature field adjuster is disposed in the first region, and the temperature field adjuster is configured to increase a temperature gradient between the first region and the second region.

7. The aerosol generating device according to claim 2, characterized in that During the preheating stage, the second region reaches its maximum temperature later than the first region reaches its maximum temperature.

8. The aerosol generating device according to claim 2, wherein: The heating zone further includes a third area, the first area is arranged close to the upper opening, the third area is arranged close to the lower opening, and the second area is located between the first area and the third area.

9. The aerosol generating device according to claim 8, characterized in that Along the longitudinal direction of the heating body, 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; or Along the longitudinal direction of the heating body, the length of the second region is smaller than the length of the first region and the length of the third region; or The length of the second region is less than or equal to 1 / 3 of the length of the heating tube.

10. The aerosol generating device according to claim 2, wherein: The aerosol generating device has a heat insulation layer therein, and the heat insulation layer is arranged around at least a part of the heating zone and around the temperature field adjusting component.

11. The aerosol generating device according to claim 10, characterized in that The heat-insulating layer includes an air layer, and a portion of the boundary of the air layer is defined by the heating zone and the temperature field adjusting member.

12. The aerosol generating device according to claim 1, wherein: The temperature field adjusting member includes a heat shrink tube, a PI film, a PAEK material, a PI material or a PBI material.

13. The aerosol generating device according to claim 1, wherein: The aerosol generating device further includes a temperature detector, wherein a sensing head of the temperature detector is disposed between the heating body and the temperature field adjusting member.

14. The aerosol generating device according to claim 13, wherein: The aerosol generating device further includes a power source and a controller, wherein the controller is configured to obtain the temperature sensed by the temperature detector and control the power provided by the power source to the heating body based on the temperature.

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