Heating assembly and aerosol generating device

Abstract

The utility model relates to a heating assembly and an aerosol generating device, the heating assembly comprises a heating pipe capable of accommodating at least part of an aerosol generating product, a first heating area, a second heating area and a heat resistance area are distributed on the heating pipe, and the first heating area and the second heating area are respectively used for heating different parts of the aerosol generating product; the heat resistance area is arranged between the first heating area and the second heating area so as to at least partially block heat conduction between the first heating area and the second heating area.

Description

[0001] This application claims priority to Chinese application CN202421056655.6 filed on May 15, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] The embodiments of the present application relate to the technical field of aerosol generation, and in particular to a heating component and an aerosol generating device. Background Art

[0003] An aerosol generating device is a device that enables a tobacco product to generate smoke without burning. In an existing exemplary aerosol generating device, its heating assembly includes a tubular substrate, a first heating element disposed on the tubular substrate, and a second heating element disposed on the tubular substrate. At least a portion of the tobacco product can be accommodated in the tubular substrate. The first heating element and the second heating element are respectively used to heat different sections of the tobacco product, thereby heating the tobacco product in sections.

[0004] However, when only one of the first heating element and the second heating element is heated, or the heating efficiencies of the two are different, the heat on the heating element with a higher temperature will be transferred in large quantities to the heating element with a lower temperature through the tubular substrate, causing the heating element with a higher temperature to have a lower heating rate because a large amount of its heat is transferred to the heating element with a lower temperature. At the same time, the heating element with a lower temperature will have a higher temperature because it absorbs a large amount of heat. Therefore, if the heating element with a higher temperature is made to reach its preset temperature, the temperature of the heating element with a lower temperature will be too high; and if the temperature of the heating element with a lower temperature is controlled to meet the preset low temperature, the heating element with a higher temperature will not reach its preheated high temperature. As a result, the expected effect of the aerosol generating device for segmented heating of tobacco products is reduced or even lost, affecting the user's smoking experience. Utility Model Content

[0005] The purpose of the present application is to provide a heating component and an aerosol generating device, which can reduce the heat crosstalk between adjacent heating zones and can independently heat different sections of an aerosol generating product in a better manner.

[0006] A heating assembly provided in an embodiment of the present application includes a heating tube capable of accommodating at least a portion of an aerosol generating product, wherein a first heating area, a second heating area and a heat-resistance area are distributed on the heating tube, and the first heating area and the second heating area are respectively used to heat different parts of the aerosol generating product;

[0007] The heat-resistance zone is disposed between the first heating zone and the second heating zone to at least partially block heat conduction between the first heating zone and the second heating zone.

[0008] As an example, at least a partial wall thickness of the heat-resistance zone is smaller than a wall thickness of the first heating zone or the second heating zone.

[0009] As an example, the heat-resistant area has one or more blind holes; or

[0010] The heat-resistant area is provided with one or more blind grooves.

[0011] As an example, the heating assembly includes a heat-insulating filler, which is filled in or injected into the blind hole or blind groove to make the surface of the heating tube substantially flush.

[0012] As an example, one or more through holes and / or one or more through grooves are formed on the wall of the heat-resistance zone.

[0013] As an example, the heating assembly further includes a shielding member, which is disposed on the heating tube and covers the through hole or through groove.

[0014] As an example, the shielding member includes a solid heat insulation layer, a PI film, a high temperature tape or a heat shrink tube.

[0015] As an example, the heating component includes a heat insulating filler, and the heat insulating filler is filled in or injected into the through hole or through groove; or

[0016] The heating component also includes an insulating coating, part of which is coated on the surface of the heating tube, and part of which is filled or injected into the through hole or through groove.

[0017] As an example, the interior of the heating tube has a receiving cavity for receiving at least part of the aerosol generating product, and the through hole or the through groove is connected to the receiving cavity;

[0018] Wherein, the opening area of ​​the through hole or the through groove facing the accommodating cavity is smaller than the opening area of ​​the through hole or the through groove facing away from the accommodating cavity.

[0019] As an example, the heating assembly further comprises a first heating element, the first heating zone being configured to heat the aerosol generating article by releasing at least part of the heat absorbed from the first heating element; and / or

[0020] The heating assembly further includes a second heating element, the second heating zone being configured to heat the aerosol-generating article by releasing at least a portion of heat absorbed from the second heating element.

[0021] As an example, the first heating element is arranged on the first heating zone; and / or

[0022] The second heating element is disposed on the second heating zone.

[0023] As an example, the heating component includes a first magnetic field generator for generating a changing magnetic field, the first heating element is configured to generate heat in the changing magnetic field, and the first heating element is located in a magnetic field penetration range of the first magnetic field generator; and / or

[0024] The heating assembly includes a second magnetic field generator for generating a changing magnetic field. The second heating element is configured to generate heat in the changing magnetic field, and the second heating element is located in a magnetic field penetration range of the second magnetic field generator.

[0025] As an example, the heating tube is made of infrared light-transmitting material; wherein,

[0026] The first heating element comprises an infrared coating disposed on the outer surface of the heating tube; and / or

[0027] The second heating element includes an infrared coating disposed on the outer surface of the heating tube.

[0028] As an example, the first heating element comprises a resistive heating material; and / or

[0029] The second heating element includes a resistive heating material.

[0030] As an example, the heating component includes the first heating element and the second heating element at the same time, and the heating component also includes a first electrode and a second electrode arranged on opposite sides of the heat resistance zone, the first electrode is electrically connected to the first heating element, and the second electrode is electrically connected to the second heating element.

[0031] As an example, the heating assembly further includes a common electrode, and the first heating element and the second heating element are both electrically connected to the common electrode.

[0032] As an example, the common electrode is coated on the heating tube and is partially arranged corresponding to the first heating area, partially arranged corresponding to the heat resistance area, and partially arranged corresponding to the second heating area.

[0033] As an example, the heating assembly further includes a third electrode and a fourth electrode disposed on opposite sides of the heat resistance zone, the third electrode being electrically connected to the first electrode on opposite sides of the first heating element, and the fourth electrode being electrically connected to the second electrode on opposite sides of the second heating element.

[0034] As an example, the heating assembly includes a heating tube made of metal and an insulating layer coated on the surface of the heating tube, and the insulating layer is located between the heating tube and the first heating element and / or the second heating element; or

[0035] The heating tube is an insulating tube.

[0036] As an example, the heating tube is configured to generate heat in a changing magnetic field, and the heating assembly also includes a first induction coil and a second induction coil for generating a changing magnetic field, the first induction coil surrounds at least a portion of the periphery of the first heating zone, the second induction coil surrounds at least a portion of the periphery of the second heating zone, and the thermal resistance zone is located outside the surround of the first induction coil and the second induction coil.

[0037] As an example, the heating tube is made of a resistive heating material; wherein,

[0038] The heating assembly further includes a common electrode, a first electrode and a second electrode, the common electrode passes through the heat-resistance zone and electrically connects the first heating zone and the second heating zone, the first electrode and the second electrode are arranged on opposite sides of the heat-resistance zone, and the first electrode is electrically connected to the first heating zone, and the second electrode is electrically connected to the second heating zone; or

[0039] The heating assembly further includes a first electrode, a second electrode, a third electrode and a fourth electrode. The first heating zone is electrically connected to the first electrode and the third electrode. The second heating zone is electrically connected to the second electrode and the fourth electrode.

[0040] As an example, the first heating zone, the heat-resistance zone and the second heating zone are arranged in sequence along the longitudinal direction of the heating tube.

[0041] As an example, the heating tube is an integrally formed tubular body, or the heat-resistance zone, the first heating zone, and the second heating zone are integrally formed.

[0042] An aerosol generating device provided in an embodiment of the present application includes the heating component as described above, and also includes a power supply and a controller, wherein the controller is electrically connected to the power supply to control the power supply to provide power to the heating component to heat the aerosol generating product, and the first heating zone and the second heating zone are configured to independently heat the aerosol generating product.

[0043] The above heating assembly and aerosol generating device include a heating tube capable of accommodating at least part of the aerosol generating product, and the heating tube is provided with a first heating zone, a second heating zone and a heat-blocking zone, the first heating zone and the second heating zone are respectively used to heat different sections of the aerosol generating product; the heat-blocking zone is arranged between the first heating zone and the second heating zone to at least partially block the conduction of heat between the first heating zone and the second heating zone. Thus, the heat crosstalk between the first heating zone and the second heating zone and the influence caused by the heat crosstalk can be reduced, which helps to better independently heat the corresponding sections of the aerosol generating product. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0045] Figure 1 is a schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0046] Figure 2 is a schematic diagram of a heating assembly provided in one embodiment of the present application;

[0047] Figure 3 is an exploded schematic diagram of a heating assembly provided in one embodiment of the present application;

[0048] Figure 4 is an exploded schematic diagram of a heating assembly provided in another embodiment of the present application;

[0049] Figure 5 is an exploded schematic diagram of a heating tube and a shielding member provided in an embodiment of the present application;

[0050] Figure 6 is an exploded schematic diagram of a heating tube and a shielding member provided in another embodiment of the present application;

[0051] Figure 7 is a schematic longitudinal cross-sectional view of a through hole or through groove on a heating tube provided in one embodiment of the present application;

[0052] Figure 8 It is a schematic diagram of the temperature curve when the area between the first heating zone and the second heating zone in the heating tube is complete;

[0053] Fig. 9 is a schematic diagram of temperature distribution when the area between the first heating zone and the second heating zone in the heating tube is complete;

[0054] Fig.10This is a schematic diagram of a temperature curve when a through groove is provided between the first heating zone and the second heating zone in a heating tube provided in an embodiment of the present application;

[0055] Fig.11 This is a schematic diagram of temperature distribution when a through groove is provided between the first heating zone and the second heating zone in a heating tube provided in an embodiment of the present application;

[0056] In the figure:

[0057] 1. Heating assembly; 11. Heating tube; 111. Accommodating cavity; 112. First heating zone; 113. Second heating zone; 114. Heat-resisting zone; 1141. Blind hole; 1142. Blind slot; 1143. Through hole; 1144. Through slot; 12. First heating element; 13. Second heating element; 14. Shielding member; 15. First magnetic field generator; 16. Second magnetic field generator; 171. First electrode; 172. Second electrode; 173; 174; 18. Common electrode;

[0058] 2. aerosol generating product; 21. aerosol forming substrate; 22. nozzle;

[0059] 31. Power supply; 32. Controller. DETAILED DESCRIPTION

[0060] 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 part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] The terms "first", "second", "third" in the present application are only used for descriptive purposes, and cannot be understood 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 between the components under a certain specific posture (as shown in the accompanying drawings), and if the specific 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.

[0062] Reference to "embodiments" herein means that a particular feature, structure, or characteristic 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.

[0063] 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.

[0064] Please refer to Figure 1 One embodiment of the present application provides a heating component 1 and an aerosol generating device adapted for the heating component 1, wherein the aerosol generating device is a device that can be connected to an aerosol generating product 2 and can enable the aerosol generating product 2 to generate aerosol without burning.

[0065] 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 2 is removably connected to an aerosol-generating device. The aerosol-generating article 2 may be disposable or reusable.

[0066] The aerosol-forming substrate 21 may include a tobacco-containing material containing volatile tobacco flavor compounds that are released from the aerosol-forming substrate 21 when heated. The aerosol-forming substrate 21 may include non-tobacco materials. The aerosol-forming substrate 21 may include tobacco-containing materials and non-tobacco materials. When the aerosol-forming substrate 21 is a solid aerosol-forming substrate, the aerosol-generating article 2 may be a cigarette, a cigarette rod, a cigar, or the like.

[0067] The aerosol generating device provided in the present application is an electrically operated aerosol generating device, which can convert electrical energy into thermal energy, and then release the heat through the heating component 1, thereby heating the aerosol-forming substrate 21, so that the aerosol-forming substrate 21 produces an aerosol. Based on this, in one embodiment, the aerosol generating device also includes a power supply 31 and a controller 32. The power supply 31 may include any suitable battery, and the battery may be a lithium-ion battery. Alternatively, the battery may be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as lithium cobalt, lithium iron phosphate, lithium titanate, or a lithium polymer battery. The controller 32 is electrically connected to the power supply 31, and the controller 32 is capable of controlling the power (electrical energy) output of the power supply 31, so as to adjust the heating temperature of the heating component 1 to the aerosol-forming substrate 21, or adjust the heating section of the heating component 1 to the aerosol-forming substrate 21. The controller 32 can also control the overall operation of the aerosol generating device. In detail, the controller 32 not only controls the operation of the battery and the heating component 1, but also controls the operation of other components in the aerosol generating device.

[0068] In one embodiment, reference may be made to Figure 2-Figure 6 The heating assembly 1 includes a heating tube 11, which is a roughly tubular body having a receiving cavity 111 therein. When the aerosol generating product 2 is connected to the aerosol generating device, at least a portion of the aerosol generating product 2 is received in the receiving cavity 111, so that at least a portion of the aerosol generating product 2 can be surrounded by the heating tube 11.

[0069] The heating tube 11 is provided with a first heating zone 112 and a second heating zone 113, which are respectively arranged corresponding to different parts of the accommodating cavity 111, so that the first heating zone 112 and the second heating zone 113 can be used to heat different parts of the aerosol generating product 2. Figure 3-Figure 6 In the illustrated embodiment, the first heating zone 112 and the second heating zone 113 are arranged in the longitudinal direction of the heating tube 11, so that the first heating zone 112 and the second heating zone 113 can heat the parts of the aerosol generating product 2 at different heights. The aerosol generating product 2 includes a mouthpiece 22 for the user to hold or the aerosol generating device includes a mouthpiece for the user to hold, the bottom of the aerosol generating product 2 is the end of the aerosol generating product 2 opposite to the mouthpiece 22, and the height of a certain part of the aerosol generating product 2 represents the longitudinal distance between the part of the aerosol generating product 2 and the bottom of the aerosol generating product 2.

[0070] Please refer to Figure 2-Figure 6The heating tube 11 is also provided with a heat-resistance zone 114, which is arranged between the first heating zone 112 and the second heating zone 113 to at least partially block the heat conduction between the first heating zone 112 and the second heating zone 113, so that the temperature of the first heating zone 112 and the temperature of the second heating zone 113 can be well maintained within the corresponding target temperature range, thereby facilitating the improvement of the temperature control accuracy at the first heating zone 112 and the second heating zone 113. For example, when the first heating zone 112 and the second heating zone 113 should have different temperatures, the heat conduction from the high temperature zone to the low temperature zone is reduced, and the heat crosstalk between the first heating zone 112 and the second heating zone 113 is reduced, so that the two maintain their proper temperatures and proper heating speeds.

[0071] The heating tube 11 is provided with a first heating zone 112, a second heating zone 113 and a heat-resistance zone 114. As an example, the first heating zone 112, the second heating zone 113 and the heat-resistance zone 114 are different areas on a complete or integrally formed tubular body, so that the heat-resistance zone 114, the first heating zone 112 and the second heating zone 113 are not connected to each other by assembly or splicing; or, as an example, the heat-resistance zone 114, the first heating zone 112 and the second heating zone 113 are integrally formed. The solutions provided by the two examples are conducive to simplifying the preparation process of the heating tube 11. When the heat-resistance zone 114, the first heating zone 112 and the second heating zone 113 are integrally formed, the heat-resistance zone 114, the first heating zone 112 and the second heating zone 113 can be made of the same material.

[0072] The heat-resistance zone 114 can have a larger thermal resistance by setting the structural features of the heat-resistance zone 114, so that when the heat-resistance zone 114 is set between the first heating zone 112 and the second heating zone 113, the heat-resistance zone 114 can at least partially block the heat from being conducted between the first heating zone 112 and the second heating zone 113.

[0073] The thermal resistance R is L / (k*A), where L is the thickness of a certain area of ​​the heating tube 11, A is the cross-sectional area of ​​the heating tube 11 perpendicular to the heat flow direction, and k is the thermal conductivity of the material of the heating tube 11. Based on this, the heat resistance zone 114 can have a larger thermal resistance by reducing the cross-sectional area of ​​the heat resistance zone 114; and / or, the heat resistance zone 114 can have a larger thermal resistance by reducing the wall thickness of the heating tube 11 in the heat resistance zone 114.

[0074] Specifically, in one embodiment, the wall thickness of at least part of the heat-resistance zone 114 is smaller than the wall thickness of the first heating zone 112 and / or the second heating zone 113. By making the heat-resistance zone 114 at least partly have a relatively small wall thickness, the thermal resistance of heat conduction between the first heating zone 112 and the second heating zone 113 is increased, thereby connecting the heat-resistance zone 114 of the first heating zone 112 and the second heating zone 113, and reducing the amount of heat conducted per unit time.

[0075] Example 1:

[0076] You can refer to Figure 4 The heat-resistant zone 114 has one or more blind holes 1141, and the blind holes 1141 are used to reduce the wall thickness of a local area of ​​the heat-resistant zone 114. Preferably, the heat-resistant zone 114 has multiple blind holes 1141, and the multiple blind holes 1141 can be evenly distributed on the heat-resistant zone 114. The multiple blind holes 1141 can be discretely arranged to form at least one ring or at least one spiral. The ring or spiral formed by the multiple blind holes 1141 can roughly evenly surround the accommodating cavity 111.

[0077] Example 2:

[0078] You can refer to Figure 3 The heat-resistant zone 114 has one or more blind grooves 1142, and the wall thickness of at least a local area of ​​the heat-resistant zone 114 is thinned by the blind grooves 1142; wherein, at least one blind groove 1142 can form a continuous ring shape, thereby surrounding the accommodating cavity 111 for one circle, and / or at least one blind groove 1142 can form a continuous arc shape, thereby surrounding a part of the accommodating cavity 111, and at least one blind groove 1142 can form a continuous spiral shape, thereby surrounding the accommodating cavity 111 for at least one circle.

[0079] It should be noted that the blind hole 1141 and the blind groove 1142 do not penetrate the heating tube 11, and the blind hole 1141 and the blind groove 1142 are formed by thinning the wall thickness of at least a part of the heat-resistance zone 114. The wall thickness corresponding to the blind hole 1141 and the blind groove 1142 is smaller than the wall thickness of the first heating zone 112 and the second heating zone 113. The heat-resistance zone 114 may have only one of the blind hole 1141 and the blind groove 1142, or the heat-resistance zone 114 may have both the blind hole 1141 and the blind groove 1142.

[0080] As an example, the blind hole 1141 and / or the blind groove 1142 are formed on the outer surface of the heating tube 11, so that when processing the heating tube 11, it is relatively easy to process and form the heat-resisting area 114 between the first heating area 112 and the second heating area 113, and it is also possible to isolate the aerosol generated by the aerosol generating product 2 in the accommodating chamber 111, and prevent the aerosol in the accommodating chamber 111 from entering the blind hole 1141 and / or the blind groove 1142, and condensing and scaling in the blind hole 1141 and / or the blind groove 1142, which makes it difficult to clean. It also helps to make the inner surface of the heating tube 11 have good consistency, and can prevent the aerosol generating product 2 from being hooked by the blind hole 1141 and / or the blind groove 1142 during the process of inserting or removing the aerosol generating product 2 from the accommodating chamber 111 due to the partial embedding of the aerosol generating product 2 in the blind hole 1141 and / or the blind groove 1142, thereby causing a large resistance when inserting or removing the aerosol generating product 2 from the accommodating chamber 111.

[0081] As an example, the heating assembly 1 includes a thermal insulation filler, which is filled or injected into the blind hole 1141 and / or the blind groove 1142 to make the surface of the heating tube 11 substantially flush. The heating tube 11 and the thermal insulation filler are solids that are formed separately, and there is contact thermal resistance between different solids, so that the thermal insulation filler filled or injected into the blind hole 1141 and / or the blind groove 1142 also helps to increase the thermal resistance of the heat-resistant zone 114. Preferably, the thermal conductivity of the thermal insulation filler is less than 40W / (m·K) or less than 10W / (m·K) at 23°C and 50% relative humidity, so as to further increase the thermal resistance of the heat-resistant zone. Suitable thermal insulation fillers include, but are not limited to, at least one of ceramics, PAEK-type materials, PI materials, or PBI materials, wherein PAEK-type materials include PEEK, PEKK, PEKEKK, or PEK materials. For example: when the heating tube 11 is made of ceramic, the thermal insulation filler may include ceramic. First, a blind hole 1141 and / or a blind groove 1142 are formed on the heating tube 11, and then a ceramic material in a powder state or a slurry state is filled or injected into the blind hole 1141 and / or the blind groove 1142. Then, the heating tube 11 is heat-treated, such as sintering the heating tube 11, so that the ceramic powder or ceramic slurry forms a dense ceramic layer or a ceramic block embedded in the blind hole 1141 and / or the blind groove 1142, forming an integral structure with the heating tube 11, which can effectively prevent the thermal insulation filler from detaching and can effectively increase the strength of the heat-resistant zone 114.

[0082] Preferably, the blind hole 1141 and / or the blind groove 1142 are formed on the outer surface of the heating tube 11 , so as to facilitate filling the blind hole 1141 and / or the blind groove 1142 with a heat insulating filler.

[0083] Preferably, the blind hole 1141 and / or the blind groove 1142 are vacant and thus not filled with heat insulating fillers, so as to prevent the heat insulating fillers from absorbing the heat of the first heating zone 112 or the second heating zone 113, thereby increasing power consumption. When the blind hole 1141 and / or the blind groove 1142 are vacant, the local portion of the heat-resisting zone 114 can not only effectively prevent the heat from being conducted between the first heating zone 112 and the second heating zone 113, but also because the mass of at least a local area of ​​the heat-resisting zone 114 is reduced due to the thinning of the wall thickness, the heat absorbing of the first heating zone 112 or the second heating zone 113 by the heat-resisting zone 114 can be reduced at the same time, which helps to reduce the power consumption of the heating tube 11.

[0084] The longitudinal section of the blind hole 1141 and / or the blind groove 1142 may be approximately rectangular, or may be approximately trapezoidal.

[0085] The blind hole 1141 and / or the blind groove 1142 can also help reduce the cross-sectional area of ​​at least a local area of ​​the heat-resistant zone 114 .

[0086] It should be noted that, when the wall thickness of at least a part of the heat-resistant zone 114 is smaller than the wall thickness of the first heating zone 112 and / or the second heating zone 113, the heating tube 11 is an integrally formed tubular body, or the first heating zone 112, the heat-resistant zone 114 and the second heating zone 113 are integrally formed; in other embodiments, when the wall thickness of at least a part of the heat-resistant zone 114 is smaller than the wall thickness of the first heating zone 112 and / or the second heating zone 113, the heat-resistant zone 114 can be connected to the first heating zone 112 and / or the second heating zone 113 by assembly or splicing.

[0087] In one embodiment, part of the wall of the heat-resistance zone 114 is pierced to form one or more through holes 1143 or through grooves 1144, so that the cross-sectional area of ​​at least a local area of ​​the heat-resistance zone 114 is reduced. By making the heat-resistance zone 114 at least partially have a relatively small cross-sectional area, the thermal resistance of heat conduction between the first heating zone 112 and the second heating zone 113 is increased, so that the heat conduction of the heat-resistance zone 114 connecting the first heating zone 112 and the second heating zone 113 per unit time is reduced.

[0088] Example 1:

[0089] You can refer to Figure 6 The heat-resistant zone 114 has one or more through holes 1143, and the cross-sectional area of ​​a local region of the heat-resistant zone 114 is reduced by the through holes 1143. Preferably, the heat-resistant zone 114 has multiple through holes 1143, and the multiple through holes 1143 can be evenly distributed on the heat-resistant zone 114. The multiple through holes 1143 can be discretely arranged to form at least one ring or at least one spiral. The ring or spiral formed by the multiple through holes 1143 can roughly evenly surround the accommodating cavity 111.

[0090] Example 2:

[0091] You can refer to Figure 5 The heat-resistant zone 114 has one or more through grooves 1144, and the cross-sectional area of ​​at least a local area of ​​the heat-resistant zone 114 is reduced by the through grooves 1144; wherein, at least one blind groove 1144 can form a continuous arc, thereby surrounding a part of the accommodating cavity 111, and / or at least one blind groove 1144 can form a longitudinally extending strip.

[0092] It should be noted that the heat-resistance area 114 may have only one of the through hole 1143 and the through groove 1144 , or the heat-resistance area 114 may have both the through hole 1143 and the through groove 1144 .

[0093] As an example, the heating assembly 1 also includes a shielding member 14, which is disposed on the heating tube 11 and covers the through hole 1143 and / or the through groove 1144, thereby blocking the through hole 1143 and / or the through groove 1144 to prevent the aerosol in the accommodating cavity 111 from leaking through the wall of the heating tube 11.

[0094] The shielding member 14 may include a PI film or a high temperature tape, which may be arranged on the heating tube 11 by winding, and wound around the periphery of the through hole 1143 and / or the through slot 1144. The shielding member 14 may include a heat shrink tube, which may be sleeved around the periphery of the heat-resisting area 114, thereby shielding the through hole 1143 and / or the through slot 1144, and the heat shrink tube may also absorb at least part of the heat conducted between the first heating area 112 and the second heating area 113, so as to prevent at least part of the heat from continuing to be conducted along the original heat flow conduction direction.

[0095] The shielding member 14 may include a solid thermal insulation layer, which is arranged at least partially in close contact with the outer surface of the heating tube 11, so as to prevent the heat of the heating tube 11 from being dissipated outward along the lateral direction of the heating tube 11, and at the same time, it can also block the through hole 1143 and / or the through groove 1144 to prevent the aerosol from leaking through the through hole 1143 and / or the through groove 1144; the solid thermal insulation layer may include aerogel or felt; and a part of the solid thermal insulation layer may be embedded in the through hole 1143 and / or the through groove 1144.

[0096] As an example, the heating assembly 1 includes a heat insulating filler, which is filled or injected into the through hole 1143 and / or the through groove 1144 to block the through hole 1143 and / or the through groove 1144. Of course, the heat insulating filler can also make the surface of the heating tube 11 substantially flush. The heat insulating filler has been described above and will not be repeated here.

[0097] As an example, the heating assembly 1 further includes an insulating coating, part of which is coated on the surface of the heating tube 11 to protect the surface of the heating tube 11 or to insulate the heating tube 11 from the heating element, and part of the insulating coating is filled in or injected into the through hole 1143 and / or the through groove 1144. In this example, when the insulating coating is coated on the surface of the heating tube 11, part of the insulating coating is filled in or injected into the through hole 1143 and / or the through groove 1144 to block the through hole 1143 and / or the through groove 1144.

[0098] It should be noted that other methods may be used to block the through hole 1143 and the through groove 1144 .

[0099] When the heat-blocking area 11 has through holes 1143 and / or through grooves 1144, the thickness of the shielding member 14 is preferably less than 0.2 mm to prevent the shielding member 14 from absorbing more heat from the heating tube 11 and causing increased power consumption of the heating tube 11. Alternatively, the shielding member 14 is preferably made of a solid heat-insulating layer.

[0100] Preferably, the through hole 1143 and / or the through groove 1144 are vacant and thus not filled with heat insulating fillers, so as to prevent the heat insulating fillers from absorbing the heat of the first heating zone 112 or the second heating zone 113, thereby increasing power consumption. When the through hole 1143 and / or the through groove 1144 are at least partially vacant, the part of the heat-resisting zone 114 can not only effectively prevent the heat from being conducted between the first heating zone 112 and the second heating zone 113, but also because the mass of the heat-resisting zone 114 is reduced, the heat absorbed by the heat-resisting zone 114 from the first heating zone 112 or the second heating zone 113 can be reduced, which helps to reduce the power consumption of the heating tube 11.

[0101] As an example, the through hole 1143 and / or the through groove 1144 are connected to the accommodating cavity 111 , and the opening area of ​​the through hole 1143 and / or the through groove 1144 toward the accommodating cavity 111 is substantially equal to the opening area of ​​the through hole 1143 and / or the through groove 1144 away from the accommodating cavity 111 .

[0102] The longitudinal section of the through hole 1143 and / or the through slot 1144 may be substantially rectangular.

[0103] As an example, see Figure 7The through hole 1143 and / or the through groove 1144 are connected to the accommodating chamber 111, and the opening area of ​​the through hole 1143 and / or the through groove 1144 facing the accommodating chamber 111 is smaller than the opening area of ​​the through hole 1143 and / or the through groove 1144 facing away from the accommodating chamber 111, so as to improve the smoothness of the inner surface of the heat-resistant zone 114, or to improve the consistency of the inner surface of the heat-resistant zone 114 as much as possible, so as to reduce or prevent the aerosol generating product 2 from interfering with the through hole 1143 and / or the through groove 1144 during the process of inserting the aerosol generating product 2 into the accommodating chamber 111 or removing the aerosol generating product 2 from the accommodating chamber 111, and reduce the resistance of the through hole 1143 and / or the through groove 1144 to the aerosol generating product 2 during the process of inserting the aerosol generating product 2 into or removing the aerosol generating product 2 from the accommodating chamber 111.

[0104] exist Figure 7 In the illustrated embodiment, the longitudinal cross-section of the through hole 1143 and / or the through slot 1144 is substantially trapezoidal.

[0105] Please refer to Figure 8 and Fig. 9 , Figure 8 and Fig. 9 They are respectively a schematic diagram of the temperature curve and a schematic diagram of the temperature distribution when the area between the first heating zone 112 and the second heating zone 113 in the heating tube 11 is complete and does not have the blind hole 1141, the blind groove 1142, the through hole 1143 and the through groove 1144. It can be seen that when only the first heating zone 112 is working among the first heating zone 112 and the second heating zone 113, the temperature difference between the middle position of the first heating zone 112 and the middle position of the second heating zone 113 is small, the temperature difference is about 50°C, the temperature in the middle position of the first heating zone 112 is relatively low, the temperature is lower than 216°C, the temperature of the end of the second heating zone 113 close to the first heating zone 112 is relatively high, and the temperature of the end of the second heating zone 113 far from the first heating zone 112 is as high as 165°C, and the first heating zone 112 and the second heating zone 113 cannot be clearly distinguished from the temperature distribution schematic diagram.

[0106] Please refer to Fig.10 and Fig.11 , Fig.10 and Fig.11 They are respectively a schematic diagram of the temperature curve and a schematic diagram of the temperature distribution when there is a through groove 1144 between the first heating zone 112 and the second heating zone 113 in the heating tube 11. Specifically, the heat-resistant zone 114 has two symmetrically arranged through grooves 1144, which are arc-shaped and have a width W of about 0.35 mm. The circumferential interval L between the two through grooves 1144 is about 2 mm, so that the first heating zone 112 and the second heating zone 113 are connected through the heat-resistant zone 114, and it can be ensured that the heat-resistant zone 114 has sufficient strength, so that the heating tube 11 can maintain the tubular shape without bending and breaking. Fig.10 and Fig.11It can be clearly observed that when only the first heating zone 112 is working among the first heating zone 112 and the second heating zone 113, the temperature difference between the middle position of the first heating zone 112 and the middle position of the second heating zone 113 is large, the temperature difference is about 90°C, which is significantly larger than the temperature difference between the middle position of the first heating zone 112 and the middle position of the second heating zone 113 when there is no through groove, and the temperature in the middle position of the first heating zone 112 is higher, which is higher than 230°C, which is significantly higher than the temperature in the middle position of the first heating zone 112 when there is no through groove. At the same time, the first heating zone 112 and the second heating zone 113 can be distinguished more clearly, and the temperature of the end of the second heating zone 113 away from the first heating zone 112 is about 123.8°C.

[0107] Therefore, when the heat-resisting area 114 includes the through groove 1144 , it can effectively prevent heat from being conducted between the first heating area 112 and the second heating area 113 , and can effectively prevent heat crosstalk between the first heating area 112 and the second heating area 113 .

[0108] In one embodiment, the longitudinal extension length of the heat-resistance zone 114 is less than the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113. Further, the longitudinal extension length of the heat-resistance zone 114 is less than or equal to 1 / 2 of the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113.

[0109] In one embodiment, the blind hole 1141 or the through hole 1143 is a roughly circular hole, and its aperture is smaller than the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113. Furthermore, its aperture is smaller than or equal to 1 / 2 of the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113.

[0110] In one embodiment, the width W of the blind groove 1142 or the through groove 1144 in the longitudinal direction is smaller than the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113. Furthermore, the width W is smaller than or equal to 1 / 2 of the longitudinal extension length of the first heating zone 112 and / or the second heating zone 113.

[0111] It should be noted that, in one embodiment, when a blind hole 1141, a blind groove 1142, a through hole 1143 and / or a through groove 1144 are provided on the heat-resistant zone 114, the heating tube 11 is an integrally formed tubular body, or the first heating zone 112, the heat-resistant zone 114 and the second heating zone 113 are integrally formed; in other embodiments, when a blind hole 1141, a blind groove 1142, a through hole 1143 and / or a through groove 1144 are provided on the heat-resistant zone 114, the heat-resistant zone 114 can be connected to the first heating zone 112 and / or the second heating zone 113 by assembly or splicing.

[0112] In one embodiment, the heating assembly 1 further comprises a first heating element 12, and the first heating zone 112 is configured to heat the aerosol generating article 2 by releasing at least part of the heat absorbed from the first heating element 12. In other words, the first heating zone 112 is heated by absorbing at least part of the heat released by the first heating element 12, and then the first heating zone 112 releases at least part of the heat absorbed to heat the corresponding part of the aerosol generating article 2.

[0113] Based on this, in one example, refer to Figure 2 and Figure 3 The first heating zone 112 is a carrier of the first heating element 12 , and the first heating element 12 can be arranged on the first heating zone 112 so as to contact the first heating zone 112 , and the first heating element 12 and the first heating zone 112 are overlapped in the transverse direction of the heating tube 11 .

[0114] For example, the first heating element 12 includes an infrared coating or a resistive heating material, which can be coated on the first heating zone 112, and the coating method includes but is not limited to printing, spraying, physical deposition, chemical deposition, particle injection or ion sputtering. Among them, the infrared coating can generate Joule heat and emit infrared rays with a wavelength of 0.75μm to 1000μm after obtaining the power provided by the power supply 31, or the infrared coating can emit infrared rays with a wavelength of 0.75μm to 1000μm after being excited, such as far infrared rays with a wavelength of 1.5μm to 400μm, or far infrared rays with a wavelength of 8μm to 15μm. Resistive heating materials include but are not limited to: semiconductors, such as doped ceramics, conductive ceramics (such as 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 steels, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0115] Or for example, the first heating element 12 includes a metal ring, a heating wire or a metal sheet, which is retained on the first heating zone 112 by sheathing, embedding or winding, wherein the metal ring, heating wire or metal sheet can be electrically connected to the power supply 31 and can generate Joule heat, or the first heating element 12 can generate heat in a changing magnetic field.

[0116] When the first heating element 12 is capable of generating heat in a changing magnetic field, the first heating element 12 may include metal or carbon. In one embodiment, the first heating element 12 may include a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. In one embodiment, the first heating element 12 includes a nickel-iron alloy. In one embodiment, the first heating element 12 includes 400 series stainless steel, including 410 grade, 420 grade, or 430 grade stainless steel.

[0117] When the first heating element 12 is capable of generating heat in a changing magnetic field, the heating assembly 1 further comprises a first magnetic field generator 15, which is electrically connected to the power source 31 and is capable of generating a changing magnetic field based on the power provided by the power source 31. At least a portion of the first heating element 12 is located within the magnetic field penetration range of the first magnetic field generator 15, so that the first heating element 12 is capable of generating heat in the changing magnetic field generated by the first magnetic field generator 15. The first magnetic field generator 15 may comprise one or more first induction coils, which surround the periphery of at least a portion of the first heating zone 112 or the first heating element 12.

[0118] It should be noted that when the first heating zone 112 heats the aerosol generating product 2 by releasing at least part of the heat absorbed from the first heating element 12, it is optional but not mandatory to arrange the first heating element 12 on the first heating zone 112. For example, the first heating element 12 can be fixed on other components of the heating assembly 1, or the first heating element 12 and the first heating zone 112 are arranged along the longitudinal direction of the heating tube 11 so that the two do not overlap in the transverse direction of the heating tube 11.

[0119] In one embodiment, the heating assembly 1 further comprises a second heating element 13, and the second heating zone 113 is configured to heat the aerosol generating article 2 by releasing at least part of the heat absorbed from the second heating element 13. In other words, the second heating zone 113 is heated by absorbing at least part of the heat released by the second heating element 13, and then the second heating zone 113 releases at least part of the heat absorbed to heat the corresponding part of the aerosol generating article 2.

[0120] Based on this, in one example, refer to Figure 2 and Figure 3 The second heating zone 113 is a carrier of the second heating element 13 , and the second heating element 13 can be disposed on the second heating zone 113 so as to contact the second heating zone 113 , and the second heating element 13 and the second heating zone 113 are overlapped in the transverse direction of the heating tube.

[0121] For example, the second heating element 13 includes an infrared coating or a resistive heating material, and the infrared coating or the resistive heating material can be coated on the second heating area 113 .

[0122] Or for example, the second heating element 13 includes a metal ring, a heating wire or a metal sheet, which is retained on the second heating zone 113 by sheathing, embedding or winding, wherein the metal ring, heating wire or metal sheet can be electrically connected to the power supply 31 and can generate Joule heat, or the second heating element 13 can generate heat in a changing magnetic field.

[0123] When the second heating element 13 is capable of generating heat in a changing magnetic field, the second heating element 13 may include metal or carbon. In one embodiment, the second heating element 13 may include a ferromagnetic material, such as ferrite, ferromagnetic steel or stainless steel. In one embodiment, the second heating element 13 includes a nickel-iron alloy. In one embodiment, the second heating element 13 includes 400 series stainless steel, which includes 410 grade, 420 grade or 430 grade stainless steel.

[0124] When the second heating element 13 is capable of generating heat in a changing magnetic field, the heating assembly 1 further comprises a second magnetic field generator 16, which is electrically connected to the power source 31 and is capable of generating a changing magnetic field based on the power provided by the power source 31. At least a portion of the second heating element 13 is located within the magnetic field penetration range of the second magnetic field generator 16, so that the second heating element 13 is capable of generating heat in the changing magnetic field generated by the second magnetic field generator 16. The second magnetic field generator 16 may comprise one or more second induction coils, which surround the second heating zone 113 or at least a portion of the second heating element 13.

[0125] It should be noted that when the second heating zone 113 heats the aerosol generating product 2 by releasing at least part of the heat absorbed from the second heating element 13, it is optional but not mandatory to arrange the second heating element 13 on the second heating zone 113. For example, the second heating element 13 can be fixed on other components of the heating assembly 1, or the second heating element 13 and the second heating zone 113 are arranged along the longitudinal direction of the heating tube 11 so that the two do not overlap in the transverse direction of the heating tube 11.

[0126] When the first heating element and / or the second heating element 13 include an infrared coating, the heating tube 11 can be made of an infrared-transmitting material, such as glass or quartz, so that the infrared coating can be coated on the outer surface of the heating tube 11, and the infrared rays emitted by the infrared coating can pass through the wall of the heating tube 11 and be emitted to the aerosol-generating product 2 in the accommodating cavity 111. Of course, when the first heating element 12 and / or the second heating element 13 include an infrared coating, the infrared coating can also be coated on the inner surface of the heating tube 11, so that the heating tube 11 can be made of a light-shielding material such as ceramic or metal, and of course can also be made of glass with a reflective surface.

[0127] In one embodiment, the heating assembly 1 includes a first heating element 12 and a second heating element 13, and the first heating element 12 and the second heating element 13 are both electrically connected to a power source 31 to generate Joule heat and / or emit infrared rays based on the power provided by the power source 31. Figure 4 and Figure 5 The heating assembly 1 further includes a first electrode 171 and a second electrode 172 disposed on opposite sides of the heat-resistance zone 114. The first heating element 12 is electrically connected to the first electrode 171 and is electrically connected to the power source 31 through the first electrode 171. The second heating element 13 is electrically connected to the second electrode 172 and is electrically connected to the power source 31 through the second electrode 172. The resistivity of the first electrode 171 is smaller than that of the first heating element 12, and the resistivity of the second electrode 172 is smaller than that of the second heating element 13. The first electrode 171 and the second electrode 172 may be made of the same material.

[0128] As an example, see Figure 3 The heating assembly 1 further includes a common electrode 18 , the first heating element 12 and the second heating element 13 are both electrically connected to the common electrode 18 , and the common electrode 18 is used to be electrically connected to a power source 21 .

[0129] The first electrode 171 and the second electrode 172 can be electrically connected to the same output electrode of the power source 31, and the common electrode 18 is electrically connected to another output electrode of the power source 31. For example, the common electrode 18 can be used to be electrically connected to the positive electrode of the power source 31, thereby becoming the common positive electrode of the first heating element 12 and the second heating element 13, and the first electrode 171 and the second electrode 172 are both used to be electrically connected to the negative electrode of the power source 31. Or for example, the common electrode 18 can be used to be electrically connected to the negative electrode of the power source 31, thereby becoming the common negative electrode of the first heating element 12 and the second heating element 13, and the first electrode 12 and the second electrode 13 are both used to be electrically connected to the positive electrode of the power source 31.

[0130] The common electrode 18 and the first electrode 171 and / or the second electrode 172 may be made of the same material.

[0131] For further information, please refer to Figure 3 The common electrode 18 is coated on the heating tube 11 , and is partially arranged corresponding to the first heating area 112 , partially arranged corresponding to the heat-resistance area 114 , and partially arranged corresponding to the second heating area 113 .

[0132] The area on the heat-resistance zone 114 where the common electrode 18 is coated may not be provided with blind holes 1141, blind grooves 1142, through holes 1143 or through grooves 1144. Of course, the coating of the common electrode 18, such as silver paste, may be filled or injected into the blind holes 1141, blind grooves 1142, through holes 1143 or through grooves 1144 to make the surface of the heating tube 11 substantially flat, or to block the through holes 1143 or through grooves 1144.

[0133] In an embodiment with a common electrode 18, the aerosol generating device may further include a first control switch arranged between the first electrode 171 and the power supply 31, and a second control switch arranged between the second electrode 172 and the power supply 31, the first control switch and the second control switch are both electrically connected to the controller, and the controller 32 controls the operation of the first heating element 12 and the second heating element 13 by controlling the first control switch and the second control switch to be turned on or off.

[0134] In one embodiment, the first heating zone 112 and the second heating zone 113 are capable of independently heating the aerosol-generating article.

[0135] Based on this, as an example, the first heating element 12 and the second heating element 13 are configured to work in a time sequence.

[0136] For example, the first heating element 12 and the second heating element 13 work mutually exclusive. Specifically, if the first heating element 12 is set to work before the second heating element 13, when the first heating zone 112 heats the corresponding part of the aerosol generating product 2, the part of the aerosol generating product 2 corresponding to the first heating zone 112 can obtain sufficient heat to generate aerosol; after the first heating element 12 finishes working, the second heating element 13 can start working to heat the part of the aerosol generating product 2 corresponding to the second heating zone 113, so that the part of the aerosol generating product 2 corresponding to the second heating zone 113 can obtain sufficient heat to generate aerosol. Based on this, the controller 32 can control the second control switch to be turned off when controlling the first control switch to be turned on, and then control the second control switch to be turned on after controlling the first control switch to be turned off.

[0137] Alternatively, as an example, the first heating element 12 is configured to work before the second heating element 13, the second heating element 13 starts working before the first heating element 12 stops working, and the first heating element 12 stops working before the second heating element 13. Thus, the first heating element 12 and the second heating element 13 can work simultaneously within a certain period of time. In this way, in the late stage of heating of the portion of the aerosol generating product 2 corresponding to the first heating zone 112, the aerosol generating ability of the portion is weakened, so the amount of aerosol generated gradually decreases. At this time, the portion of the aerosol generating product 2 corresponding to the second heating zone 113 starts to generate aerosol because it obtains more heat, and in the early stage of heating of the portion, the amount of aerosol generated gradually increases, so that the total amount of aerosol generated by the aerosol generating product 2 can be ensured to be relatively stable, which helps to keep the aerosol concentration of each puff consistent, so that each puff of aerosol has approximately the same fullness and taste.

[0138] Based on this, the controller 32 may first control the first control switch to be turned on, then control the second control switch to be turned on, then control the first control switch to be turned off, and finally control the second control switch to be turned off.

[0139] It should be noted that during the operation of the first heating element 12 and / or the second heating element 13, the controller 32 can control the power output of the power supply 31 to the heating component 1 to adjust the temperature and heating rate of the first heating element 12 and / or the second heating element 13.

[0140] As an example, see Figure 4 The heating assembly 1 further includes a third electrode 173 and a fourth electrode 174. The third electrode 173 is electrically connected to the first electrode 171 at two opposite sides of the first heating element 12, and the first heating element 12 is electrically connected to the positive electrode and the negative electrode of the power source 31 through the first electrode 171 and the third electrode 173, respectively. The fourth electrode 174 is electrically connected to the second electrode 172 at two opposite sides of the second heating element 13, and the second heating element 13 is electrically connected to the positive electrode and the negative electrode of the power source 31 through the second electrode 172 and the fourth electrode 174, respectively. Thus, the first heating element 12 and the second heating element 13 can work independently of each other, so that the first heating element 12 and the second heating element 13 can work in a time sequence, or the first heating element 12 can work before the second heating element 13, the second heating element 13 can start working before the first heating element 12 finishes working, and the first heating element 12 can also finish working before the second heating element 13.

[0141] In one example, the third electrode 173 and the fourth electrode 174 are disposed on opposite sides of the heat-resistance zone 114 by coating. In one example, the first electrode 171 and the second electrode 172 are disposed on opposite sides of the heat-resistance zone 114 by coating. In one example, the first electrode 171 is disposed corresponding to the first heating zone 112. In one example, the third electrode 173 is disposed corresponding to the first heating zone 113. In one example, the second electrode 172 is disposed corresponding to the second heating zone 113. In one example, the fourth electrode 174 is disposed corresponding to the second heating zone 113.

[0142] When the heating assembly 1 includes the first heating element 12 and / or the second heating element 13, and the first heating element 12 and / or the second heating element 13 are arranged on the heating tube 11: In one embodiment, the heating assembly 1 includes the heating tube 11 made of metal, so the heating tube 11 is a metal tube, and the heating assembly 1 also includes an insulating layer coated on the surface of the metal tube, and the insulating layer is located between the metal tube and the first heating element 12 and / or the second heating element 13, wherein the insulating layer can be formed by the above-mentioned insulating coating, and compared with the insulating tube, especially compared with the ceramic tube, the metal tube can have a smaller wall thickness, so that When the temperature rises to the same level, the metal tube consumes less heat, which helps to reduce the energy consumption of the heating component 1 and speed up the heating speed of the corresponding heating zone on the heating tube 11, and it is convenient to use laser cutting to open a through hole 1143 or a through groove 1144 on the metal tube; in one embodiment, the heating tube 11 includes an insulating tube, and suitable insulating tubes include but are not limited to glass tubes, quartz tubes, ceramic tubes or cast film tubes. Therefore, there is no need to arrange an insulating layer on the surface of the insulating tube to insulate the heating element and the heating tube 11, and it is convenient to form a blind hole 1141 or a blind groove 1142 on the heating tube 11.

[0143] In one embodiment, reference may be made to Figure 6 The heating tube 11 is configured to generate heat in a changing magnetic field, so that the heating tube 11 itself can generate heat, so in this embodiment, the heating element is optional but not necessary.

[0144] In this embodiment, the heating component 1 also includes a first induction coil and a second induction coil for generating a changing magnetic field, the first induction coil surrounds at least a portion of the periphery of the first heating zone 112, so that at least a portion of the first heating zone 112 in the heating tube 11 can generate heat in the magnetic field generated by the first induction coil; the second induction coil surrounds at least a portion of the periphery of the second heating zone 113, so that at least a portion of the second heating zone 113 in the heating tube 11 can generate heat in the magnetic field generated by the second induction coil; the thermal resistance zone 114 is located outside the surround of the first induction coil and the second induction coil, so that when the magnetic field is generated by the first induction coil and the second induction coil, the thermal resistance zone 114 cannot generate heat or can only generate a small amount of heat.

[0145] In one embodiment, the heating tube 11 is made of a resistive heating material, such as a conductive ceramic, so that the heating tube 11 itself can generate heat, so in this embodiment, the heating element is optional but not mandatory. However, the heating tube 11 needs to be electrically connected to the power supply 31 for heating, so the heating assembly 1 also includes an electrode electrically connected to the heating tube 11.

[0146] As an example, the heating assembly 1 further includes a common electrode 18, a first electrode 171, and a second electrode 172 for being electrically connected to the power source 31. The common electrode 18 passes through the heat-resistance zone 114 and electrically connects the first heating zone 112 and the second heating zone 113 at the same time. The first electrode 171 and the second electrode 172 are arranged on opposite sides of the heat-resistance zone 114, and the first electrode 171 is electrically connected to the resistive heating material on the first heating zone 112, and the second electrode 172 is electrically connected to the resistive heating material on the second heating zone 113. Thus, the first heating zone 112 itself can generate Joule heat, and the second heating zone 113 itself can generate Joule heat.

[0147] At least one of the common electrode 18 , the first electrode 171 , and the second electrode 172 may be disposed on the heating tube 11 by coating, for example, on a conductive ceramic.

[0148] Alternatively, as an example, the heating component 1 also includes a first electrode 171, a second electrode 172, a third electrode 173 and a fourth electrode 174, and the resistive heating material on the first heating zone 112 is electrically connected to the first electrode 171 and the third electrode 173, so as to be electrically connected to the positive and negative electrodes of the power supply 31 through the first electrode 171 and the third electrode 173, so that the first heating zone 112 can generate Joule heat; the resistive heating material on the second heating zone 113 is electrically connected to the second electrode 172 and the fourth electrode 174, so as to be electrically connected to the positive and negative electrodes of the power supply 31 through the second electrode 172 and the fourth electrode 174, so that the second heating zone 113 can generate Joule heat.

[0149] At least one of the first electrode 171 , the second electrode 172 , the third electrode 173 and the fourth electrode 174 may be disposed on the heating tube 11 by coating, for example, on a conductive ceramic.

[0150] 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. A heating component, characterized in that: A heating tube capable of accommodating at least a portion of an aerosol generating article, wherein a first heating zone, a second heating zone and a heat-resistance zone are distributed on the heating tube, wherein the first heating zone and the second heating zone are respectively used to heat different portions of the aerosol generating article; The heat-resistance zone is disposed between the first heating zone and the second heating zone to at least partially block heat conduction between the first heating zone and the second heating zone.

2. The heating assembly according to claim 1, characterized in that The wall thickness of at least a part of the heat-resistance zone is smaller than the wall thickness of the first heating zone or the second heating zone.

3. The heating assembly according to claim 2, characterized in that The heat-resistant area has one or more blind holes; or The heat-resistant area is provided with one or more blind grooves.

4. The heating assembly according to claim 3, characterized in that The heating assembly includes a heat-insulating filler, which is filled in or injected into the blind hole or the blind groove to make the surface of the heating tube substantially flush.

5. The heating assembly according to claim 1, characterized in that One or more through holes and / or one or more through grooves are formed on the wall of the heat-resistance zone.

6. The heating assembly according to claim 5, characterized in that The heating assembly further comprises a shielding member, which is arranged on the heating tube and covers the through hole or the through groove.

7. The heating assembly according to claim 6, characterized in that The shielding member includes a solid heat insulation layer, a PI film, a high temperature adhesive tape or a heat shrink tube.

8. The heating assembly according to claim 5, characterized in that The heating component comprises a heat-insulating filler, and the heat-insulating filler is filled in or injected into the through hole or through groove; or The heating component also includes an insulating coating, part of which is coated on the surface of the heating tube, and part of which is filled or injected into the through hole or through groove.

9. The heating assembly according to claim 5, characterized in that The interior of the heating tube has a receiving cavity for receiving at least part of the aerosol generating product, and the through hole or the through groove is connected to the receiving cavity; Wherein, an opening area of ​​the through hole or the through groove toward the accommodating cavity is smaller than an opening area of ​​the through hole or the through groove away from the accommodating cavity.

10. The heating assembly according to claim 1, characterized in that The heating assembly further comprises a first heating element, the first heating zone being configured to heat the aerosol-generating article by releasing at least a portion of the heat absorbed from the first heating element; and / or The heating assembly further includes a second heating element, the second heating zone being configured to heat the aerosol-generating article by releasing at least a portion of heat absorbed from the second heating element.

11. The heating assembly according to claim 10, characterized in that The first heating element is disposed on the first heating zone; and / or The second heating element is disposed on the second heating zone.

12. The heating assembly according to claim 10, characterized in that The heating assembly comprises a first magnetic field generator for generating a changing magnetic field, the first heating element is configured to generate heat in the changing magnetic field, and the first heating element is located in a magnetic field penetration range of the first magnetic field generator; and / or The heating assembly includes a second magnetic field generator for generating a changing magnetic field. The second heating element is configured to generate heat in the changing magnetic field, and the second heating element is located in a magnetic field penetration range of the second magnetic field generator.

13. The heating assembly according to claim 10, characterized in that The heating tube is made of infrared-transmitting material; wherein, The first heating element comprises an infrared coating disposed on the outer surface of the heating tube; and / or The second heating element includes an infrared coating disposed on the outer surface of the heating tube.

14. The heating assembly according to claim 10, characterized in that The first heating element comprises a resistive heating material; and / or The second heating element includes a resistive heating material.

15. The heating assembly according to claim 13 or 14, characterized in that: The heating assembly includes the first heating element and the second heating element at the same time, and also includes a first electrode and a second electrode arranged on opposite sides of the heat resistance zone, the first electrode is electrically connected to the first heating element, and the second electrode is electrically connected to the second heating element.

16. The heating assembly according to claim 15, characterized in that The heating assembly further includes a common electrode, and the first heating element and the second heating element are both electrically connected to the common electrode.

17. The heating assembly according to claim 16, characterized in that The common electrode is coated on the heating tube and is partially arranged corresponding to the first heating area, partially arranged corresponding to the heat resistance area, and partially arranged corresponding to the second heating area.

18. The heating assembly according to claim 15, characterized in that The heating assembly also includes a third electrode and a fourth electrode disposed on opposite sides of the heat-resistant zone, the third electrode is electrically connected to the first electrode on opposite sides of the first heating element, and the fourth electrode is electrically connected to the second electrode on opposite sides of the second heating element.

19. The heating assembly according to claim 13 or 14, characterized in that: The heating assembly comprises a heating tube made of metal and an insulating layer coated on the surface of the heating tube, wherein the insulating layer is located between the heating tube and the first heating element and / or the second heating element; or The heating tube is an insulating tube.

20. The heating assembly according to claim 1, characterized in that The heating tube is configured to generate heat in a changing magnetic field. The heating assembly also includes a first induction coil and a second induction coil for generating a changing magnetic field. The first induction coil surrounds at least a portion of the first heating zone, and the second induction coil surrounds at least a portion of the second heating zone. The heat-resistant zone is located outside the surround of the first induction coil and the second induction coil.

21. The heating assembly according to claim 1, characterized in that The heating tube is made of a resistance heating material; wherein, The heating assembly further includes a common electrode, a first electrode and a second electrode, the common electrode passes through the heat-resistance zone and electrically connects the first heating zone and the second heating zone, the first electrode and the second electrode are arranged on opposite sides of the heat-resistance zone, and the first electrode is electrically connected to the first heating zone, and the second electrode is electrically connected to the second heating zone; or The heating assembly further includes a first electrode, a second electrode, a third electrode and a fourth electrode. The first heating zone is electrically connected to the first electrode and the third electrode. The second heating zone is electrically connected to the second electrode and the fourth electrode.

22. The heating assembly according to claim 1, characterized in that The first heating zone, the heat-resistance zone and the second heating zone are arranged in sequence along the longitudinal direction of the heating tube.

23. The heating assembly according to claim 1, characterized in that The heating tube is an integrally formed tubular body, or the heat-resistance zone, the first heating zone and the second heating zone are integrally formed.

24. An aerosol generating device, characterized in that: The heating component comprises any one of claims 1-23, and further comprises a power supply and a controller, wherein the controller is electrically connected to the power supply to control the power supply to provide power for the heating component to heat the aerosol generating product, and the first heating zone and the second heating zone are configured to independently heat the aerosol generating product.

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