Heating assembly and aerosol generating device

Abstract

The invention 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] Embodiments of the present application relate to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generating device. BACKGROUND

[0003] An aerosol generating device is a device that allows a smoking article to generate smoke without combustion. In an example aerosol generating device, a heating assembly thereof 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 smoking article being capable of being accommodated in the tubular substrate, the first heating element and the second heating element being respectively used to heat different sections of the smoking article, thereby allowing the smoking article to be subjected to segmented heating.

[0004] However, when only one of the first heating element and the second heating element is heated, or when the heating efficiency of the two is not the same, the heat on the heating element with a higher temperature will be transferred to the heating element with a lower temperature through the tubular substrate in a large amount, causing the heating element with a higher temperature to have a reduced temperature rising speed because a large amount of heat is transferred to the heating element with a lower temperature, and the heating element with a lower temperature to have a higher temperature because a large amount of heat is absorbed. Therefore, if the heating element with a higher temperature is allowed 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 preset high temperature. As a result, the expected effect of the aerosol generating device on the segmented heating of the smoking article is reduced or even lost, affecting the smoking experience of a user. SUMMARY

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

[0006] A heating assembly provided by an embodiment of the present application includes a heating tube capable of accommodating at least a portion of an aerosol generating article, the heating tube having a first heating zone, a second heating zone, and a heat blocking zone distributed thereon, the first heating zone and the second heating zone being respectively used to heat different parts of the aerosol generating article.

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

[0008] As an example, the heat resistance zone has a wall thickness that is smaller than that of the first heating zone or the second heating zone.

[0009] As an example, the heat resistance zone has one or more blind holes; or

[0010] The heat resistance zone has one or more blind grooves.

[0011] As an example, the heating assembly further comprises a heat insulation filler, which is filled in or injected into the blind hole or the blind groove, so as to make the surface of the heating tube substantially flush.

[0012] As an example, the heat resistance zone has one or more through holes and / or one or more through grooves.

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

[0014] As an example, the shielding member comprises a solid heat insulation layer, a PI film, a high-temperature adhesive tape or a heat-shrinkable tube.

[0015] As an example, the heating assembly further comprises a heat insulation filler, which is filled in or injected into the through hole or the through groove; or

[0016] The heating assembly further comprises an insulating coating, part of which is coated on the surface of the heating tube, and part of which is filled in or injected into the through hole or the through groove.

[0017] As an example, the heating tube has an accommodation cavity for accommodating at least part of the aerosol generating article inside, and the through hole or the through groove communicates with the accommodation cavity.

[0018] The opening area of the through hole or the through groove towards the accommodation cavity is smaller than the opening area of the through hole or the through groove away from the accommodation cavity.

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

[0020] The heating assembly further comprises a second heating element, and the second heating zone is configured to heat the aerosol generating article by releasing at least part of the heat absorbed by 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 assembly comprises a first magnetic field generator for generating a varying magnetic field, the first heating element is configured to heat in the varying 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 comprises a second magnetic field generator for generating a varying magnetic field, the second heating element is configured to heat in the varying 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 permeable 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 comprises an infrared coating disposed on the outer surface of the heating tube.

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

[0029] The second heating element comprises an electrically resistive heating material.

[0030] As an example, the heating assembly comprises the first heating element and the second heating element at the same time, the heating assembly further comprises a first electrode and a second electrode disposed 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 comprises 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 and disposed on the heating tube, and is partially disposed corresponding to the first heating zone, partially disposed corresponding to the heat resistance zone, and partially disposed corresponding to the second heating zone.

[0033] As an example, the heating assembly further comprises a third electrode and a fourth electrode disposed on opposite sides of the heat resistance 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.

[0034] As an example, the heating assembly comprises a heating tube made of metal and an insulating layer coated on the surface of the heating tube, 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, the heating assembly further comprises a first induction coil and a second induction coil for generating a changing magnetic field, the first induction coil is wrapped around at least a part of the periphery of the first heating zone, the second induction coil is wrapped around at least a part of the periphery of the second heating zone, and the heat resistance zone is located outside the wrapping of the first induction coil and the second induction coil.

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

[0038] The heating assembly further comprises 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 comprises 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, and 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] The aerosol generating device provided by the embodiments of the present application comprises the heating assembly, further comprises a power supply and a controller, the controller is electrically connected to the power supply to control the power supply to provide power for the heating assembly to heat the aerosol generating article, and the first heating zone and the second heating zone are configured to independently heat the aerosol generating article.

[0043] The heating assembly and the aerosol generating device above include a heating tube capable of accommodating at least a part of the aerosol generating article. 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 for heating different sections of the aerosol generating article. 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 cross talk on the first heating zone and the second heating zone and the influence caused by the heat cross talk can be reduced, and better independent heating of the corresponding sections of the aerosol generating article can be facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the specific embodiments of the present application or the prior art, the drawings required for use in the description of the specific embodiments or the prior art will be briefly introduced below. 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 proportions.

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

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

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

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

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

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

[0051] Figure 7 is a longitudinal sectional schematic diagram of a through hole or a through groove on a heating tube provided by an embodiment of the present application;

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

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

[0054] Figure 10is a temperature curve schematic diagram when the first heating zone and the second heating zone in the heating pipe have a through slot according to an embodiment of the present application;

[0055] Figure 11 is a temperature distribution schematic diagram when the first heating zone and the second heating zone in the heating pipe have a through slot according to an embodiment of the present application;

[0056] in the figure:

[0057] 1, heating assembly; 11, heating pipe; 111, containing cavity; 112, first heating zone; 113, second heating zone; 114, heat blocking zone; 1141, blind hole; 1142, blind slot; 1143, through hole; 1144, through slot; 12, first heating element; 13, second heating element; 14, shielding piece; 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 article; 21, aerosol forming substrate; 22, mouthpiece;

[0059] 31, power supply; 32, controller. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0061] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship or movement condition between components, and if the specific posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0062] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0063] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In cases where one element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar expressions are used for explanation only and are not intended to be limiting.

[0064] Reference will now be made to Figure 1 An embodiment of the present application provides a heating assembly 1 and an aerosol generating device to which the heating assembly 1 is adapted, wherein the aerosol generating device is a device capable of being coupled with an aerosol generating article 2 and capable of causing the aerosol generating article 2 to generate an aerosol without combustion.

[0065] As used herein, the term "aerosol generating article" refers to an article that includes an aerosol-forming substrate 21 that, when heated, releases volatile compounds that form an aerosol. In an embodiment, the aerosol generating article 2 is removably coupled to the aerosol generating device. The aerosol generating article 2 can be disposable or reusable.

[0066] The aerosol-forming substrate 21 can include a tobacco-containing material that contains volatile tobacco flavor compounds that are released from the aerosol-forming substrate 21 upon heating. The aerosol-forming substrate 21 can include a non-tobacco material. The aerosol-forming substrate 21 can include a tobacco-containing material as well as a non-tobacco material. When the aerosol-forming substrate 21 is a solid aerosol-forming substrate, the aerosol generating article 2 can be a cigarette, a cigar, or the like.

[0067] The aerosol generating apparatus provided in this application is an electrically operated aerosol generating apparatus that can convert electrical energy into heat energy, and then release the heat through the heating component 1, thereby heating the aerosol forming matrix 21 and causing the aerosol forming matrix 21 to generate aerosols. Based on this, in one embodiment, the aerosol generating apparatus further includes a power supply 31 and a controller 32. The power supply 31 may include any suitable battery, which 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 a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery. The controller 32 is electrically connected to the power supply 31, and the controller 32 can control the power (electrical energy) output of the power supply 31 to adjust the heating temperature of the aerosol forming matrix 21 by the heating component 1, or to adjust the heating zone of the aerosol forming matrix 21 by the heating component 1. The controller 32 can also control the overall operation of the aerosol generating apparatus. Specifically, the controller 32 controls not only the operation of the battery and the heating component 1, but also the operation of other components in the aerosol generating apparatus.

[0068] In one embodiment, reference can be made to Figures 2-6 The heating assembly 1 includes a heating tube 11, which is generally tubular and has a receiving cavity 111 inside. When the aerosol generating article 2 is connected to the aerosol generating device, at least a portion of the aerosol generating article 2 is contained in the receiving cavity 111, so that at least a portion can be surrounded by the heating tube 11.

[0069] The heating tube 11 has a first heating zone 112 and a second heating zone 113 distributed on it. The first heating zone 112 and the second heating zone 113 are respectively arranged for different parts of the receiving 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-generated product 2. Figures 3-6 In the illustrated embodiment, the first heating zone 112 and the second heating zone 113 are arranged longitudinally along 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 article 2 at different heights. The aerosol generating article 2 includes a mouthpiece 22 for a user to hold, or the aerosol generating device includes a mouthpiece for a user to hold. The bottom of the aerosol generating article 2 is the end of the aerosol generating article 2 that is opposite to the mouthpiece 22. The height of a certain part of the aerosol generating article 2 represents the longitudinal distance between that part of the aerosol generating article 2 and the bottom of the aerosol generating article 2.

[0070] Please refer to Figures 2-6The heating pipe 11 is also provided with a heat blocking area 114, which is arranged between the first heating area 112 and the second heating area 113, so as to at least partially hinder the heat conduction between the first heating area 112 and the second heating area 113, so that the temperature of the first heating area 112 and the temperature of the second heating area 113 can be better maintained in the corresponding target temperature range, thereby facilitating the improvement of the temperature control accuracy at the first heating area 112 and the second heating area 113. For example, when the first heating area 112 and the second heating area 113 should have different temperatures, by reducing the heat conduction from the high-temperature area to the low-temperature area, the heat cross talk between the first heating area 112 and the second heating area 113 is reduced, so that the two areas can maintain their respective temperatures and respective temperature rising speeds.

[0071] The heating pipe 11 is also provided with a heat blocking area 114, which is arranged between the first heating area 112 and the second heating area 113, so as to at least partially hinder the heat conduction between the first heating area 112 and the second heating area 113, so that the temperature of the first heating area 112 and the temperature of the second heating area 113 can be better maintained in the corresponding target temperature range, thereby facilitating the improvement of the temperature control accuracy at the first heating area 112 and the second heating area 113. For example, when the first heating area 112 and the second heating area 113 should have different temperatures, by reducing the heat conduction from the high-temperature area to the low-temperature area, the heat cross talk between the first heating area 112 and the second heating area 113 is reduced, so that the two areas can maintain their respective temperatures and respective temperature rising speeds.

[0072] The heat blocking area 114, the first heating area 112 and the second heating area 113 can be integrally formed.

[0073] The heat blocking area 114, the first heating area 112 and the second heating area 113 can be integrally formed.

[0074] Specifically, in an embodiment, the wall thickness of the heat resistance zone 114 is smaller than that of the first heating zone 112 and / or the second heating zone 113 at least in part. By making the wall thickness of the heat resistance zone 114 relatively small at least in part, the thermal resistance of the heat conduction between the first heating zone 112 and the second heating zone 113 is increased, so that the heat resistance zone 114 connecting the first heating zone 112 and the second heating zone 113 conducts less heat in unit time.

[0075] Example 1:

[0076] Referring to Figure 4 The heat resistance zone 114 has one or more blind holes 1141, and the wall thickness of the heat resistance zone 114 is thinned by the blind holes 1141. Preferably, the heat resistance zone 114 has a plurality of blind holes 1141, which can be uniformly distributed on the heat resistance zone 114, or arranged in at least one ring or at least one spiral shape, and the ring or spiral shape formed by the plurality of blind holes 1141 can substantially uniformly surround the accommodation cavity 111.

[0077] Example 2:

[0078] Referring to Figure 3 The heat resistance zone 114 has one or more blind grooves 1142, and the wall thickness of the heat resistance zone 114 is thinned by the blind grooves 1142. At least one blind groove 1142 can form a continuous ring to surround the accommodation cavity 111, and / or at least one blind groove 1142 can form a continuous arc to surround part of the accommodation cavity 111, and / or at least one blind groove 1142 can form a continuous spiral to surround the accommodation cavity 111 at least once.

[0079] It should be noted that the blind holes 1141 and the blind grooves 1142 do not penetrate the heating tube 11, and the blind holes 1141 and the blind grooves 1142 are formed by thinning the wall thickness of the heat resistance zone 114 at least in part. The wall thickness corresponding to the blind holes 1141 and the blind grooves 1142 is smaller than that of the first heating zone 112 and the second heating zone 113. The heat resistance zone 114 can have only one of the blind holes 1141 and the blind grooves 1142, or both the blind holes 1141 and the blind grooves 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 the heating tube 11 is processed, the heat-insulating zone 114 can be formed between the first heating zone 112 and the second heating zone 113 more easily, and the aerosol generated by the aerosol generating article 2 in the accommodation cavity 111 can be isolated, and the aerosol in the accommodation cavity 111 can be prevented from entering the blind hole 1141 and / or the blind groove 1142 and being condensed and fouled in the blind hole 1141 and / or the blind groove 1142, thereby causing difficulty in cleaning. Moreover, it is also helpful to make the inner surface of the heating tube 11 have good consistency, and can prevent the aerosol generating article 2 from being hooked by the blind hole 1141 and / or the blind groove 1142 due to the partial insertion of the aerosol generating article 2 into the blind hole 1141 and / or the blind groove 1142 during the process of inserting or pulling out the aerosol generating article 2 from the accommodation cavity 111, thereby causing greater resistance when the aerosol generating article 2 is inserted or pulled out of the accommodation cavity 111.

[0081] As an example, the heating assembly 1 includes a heat-insulating 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 heat-insulating filler are respectively formed solid bodies, and the different solid bodies have a contact thermal resistance, so that the heat-insulating 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-insulating zone 114, and preferably the heat conductivity of the heat-insulating filler is less than 40 W / (m·K) or less than 10 W / (m·K) at 23°C and 50% relative humidity, so as to further increase the thermal resistance of the heat-insulating zone. Suitable heat-insulating fillers include, but are not limited to, at least one of ceramic, PAEK-based material, PI material or PBI material, wherein the PAEK-based material includes PEEK, PEKK, PEKEKK or PEK material. For example, when the heating tube 11 is made of ceramic, the heat-insulating filler can include ceramic, the blind hole 1141 and / or the blind groove 1142 are first formed on the heating tube 11, and then the 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, and then the heating tube 11 is subjected to heat treatment, such as sintering treatment, so that the ceramic powder or the ceramic slurry forms a dense ceramic layer or a ceramic block embedded in the blind hole 1141 and / or the blind groove 1142, and forms an integrated structure with the heating tube 11, which can effectively prevent the heat-insulating filler from being separated and can effectively increase the strength of the heat-insulating 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 the filling of the heat-insulating filler in the blind hole 1141 and / or the blind groove 1142.

[0083] Preferably, the blind holes 1141 and / or the blind grooves 1142 are left empty and are not filled with the heat insulation filler, so as to prevent the heat insulation filler from absorbing heat of the first heating area 112 or the second heating area 113, thereby increasing the power consumption. When the blind holes 1141 and / or the blind grooves 1142 are left empty, the partial heat blocking area 114 not only effectively prevents heat conduction between the first heating area 112 and the second heating area 113, but also reduces the heat absorption of the heat blocking area 114 from the first heating area 112 or the second heating area 113 due to the reduced wall thickness of the at least partial heat blocking area 114, thereby helping to reduce the power consumption of the heating pipe 11.

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

[0085] The blind hole 1141 and / or the blind groove 1142 also help to reduce the cross-sectional area of the at least partial heat blocking area 114.

[0086] It should be noted that when the wall thickness of the at least partial heat blocking area 114 is smaller than the wall thickness of the first heating area 112 and / or the second heating area 113, the heating pipe 11 is an integrally formed tubular body, or the first heating area 112, the heat blocking area 114 and the second heating area 113 are integrally formed; in other embodiments, when the wall thickness of the at least partial heat blocking area 114 is smaller than the wall thickness of the first heating area 112 and / or the second heating area 113, the heat blocking area 114 can be connected to the first heating area 112 and / or the second heating area 113 by assembling or splicing.

[0087] In an embodiment, part of the wall of the heat blocking area 114 is perforated to form one or more through holes 1143 or through grooves 1144, so as to reduce the cross-sectional area of the at least partial heat blocking area 114. By reducing the cross-sectional area of the at least partial heat blocking area 114, the thermal resistance of heat conduction between the first heating area 112 and the second heating area 113 is increased, thereby reducing the heat conduction of the heat blocking area 114 connecting the first heating area 112 and the second heating area 113 in unit time.

[0088] Example 1:

[0089] Reference can be made to Figure 6 The heat blocking area 114 has one or more through holes 1143, and the cross-sectional area of the at least partial heat blocking area 114 is reduced through the through holes 1143. Preferably, the heat blocking area 114 has a plurality of through holes 1143, which can be uniformly distributed on the heat blocking area 114, and the plurality of through holes 1143 can be arranged in at least one annular shape or at least one spiral shape, and the annular shape or the spiral shape formed by the plurality of through holes 1143 can substantially uniformly surround the accommodating cavity 111.

[0090] Example 2:

[0091] Reference can be made to Figure 5 The heat-insulating region 114 has one or more through-slots 1144, which reduce the cross-sectional area of at least a partial region of the heat-insulating region 114; at least one of the through-slots 1144 can form a continuous arc, thereby surrounding a partial region of the accommodating cavity 111, and / or at least one of the through-slots 1144 can form a longitudinally-extending strip.

[0092] It is to be noted that the heat-insulating region 114 can have only one of the through-holes 1143 and the through-slots 1144, or both the through-holes 1143 and the through-slots 1144.

[0093] As an example, the heating assembly 1 further comprises a shielding member 14, which is arranged on the heating pipe 11 and covers the through-holes 1143 and / or the through-slots 1144, thereby plugging the through-holes 1143 and / or the through-slots 1144 to prevent the aerosol in the accommodating cavity 111 from leaking out through the wall of the heating pipe 11.

[0094] The shielding member 14 can comprise a PI film or a high-temperature adhesive tape, which can be arranged on the heating pipe 11 by winding and wrapped around the periphery of the through-holes 1143 and / or the through-slots 1144. The shielding member 14 can comprise a heat-shrinkable tube, which can be sleeved on the periphery of the heat-insulating region 114, thereby shielding the through-holes 1143 and / or the through-slots 1144, and the heat-shrinkable tube can also absorb at least part of the heat conducted between the first heating region 112 and the second heating region 113 to prevent the at least part of the heat from continuing to conduct along the original heat flow direction.

[0095] The shielding member 14 can comprise a solid-state thermal insulation layer, which is arranged in close contact with at least a partial region of the outer surface of the heating pipe 11, thereby preventing the heat of the heating pipe 11 from dissipating laterally outwardly while also plugging the through-holes 1143 and / or the through-slots 1144 to prevent the aerosol from leaking out through the through-holes 1143 and / or the through-slots 1144; the solid-state thermal insulation layer can comprise aerogel or felt; a partial region of the solid-state thermal insulation layer can be embedded in the through-holes 1143 and / or the through-slots 1144.

[0096] As an example, the heating assembly 1 comprises a thermal insulation filler, which is filled in or injected into the through-holes 1143 and / or the through-slots 1144 to plug the through-holes 1143 and / or the through-slots 1144, and of course the thermal insulation filler can also make the surface of the heating pipe 11 substantially flush. The thermal insulation filler has been described above and will not be repeated here.

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

[0098] It should be noted that other ways can also be used to block the through hole 1143 and the through slot 1144.

[0099] When the heat blocking area 114 has the through hole 1143 and / or the through slot 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 of the heating tube 11 to increase the power consumption of the heating tube 11. Alternatively, the shielding member 14 is preferably made of a solid thermal insulation layer.

[0100] The through hole 1143 and / or the through slot 1144 are preferably left empty and not filled with the thermal insulation filler to prevent the thermal insulation filler from absorbing heat of the first heating area 112 or the second heating area 113 to increase the power consumption. When the through hole 1143 and / or the through slot 1144 are at least partially left empty, the local heat blocking area 114 not only effectively blocks the heat conduction between the first heating area 112 and the second heating area 113, but also reduces the heat absorption of the local heat blocking area 114 from the first heating area 112 or the second heating area 113 due to the reduced mass of the heat blocking area 114, which helps to reduce the power consumption of the heating tube 11.

[0101] As an example, the through hole 1143 and / or the through slot 1144 communicate with the accommodating cavity 111, and the opening area of the through hole 1143 and / or the through slot 1143 towards the accommodating cavity 111 is substantially equal to the opening area of the through hole 1143 and / or the through slot 1143 away from the accommodating cavity 111.

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

[0103] As an example, reference can be made to Figure 7The opening area of the through hole 1143 and / or the through groove 1144 facing the accommodation cavity 111 is smaller than the opening area of the through hole 1143 and / or the through groove 1144 facing away from the accommodation cavity 111, so as to improve the smoothness of the inner surface of the heat resistance zone 114, or to improve the consistency of the inner surface of the heat resistance zone 114 as much as possible, so as to reduce or prevent the aerosol generating article 2 from interfering with the through hole 1143 and / or the through groove 1144 during the process of inserting or pulling out the accommodation cavity 111, and to reduce the resistance of the through hole 1143 and / or the through groove 1144 to the aerosol generating article 2 during the process of inserting or pulling out the accommodation cavity 111.

[0104] In Figure 7 In the embodiment shown in the drawings, the longitudinal section of the through hole 1143 and / or the through groove 1144 is substantially trapezoidal.

[0105] Please refer to Figure 8 and Figure 9 , Figure 8 and Figure 9 are the temperature curve schematic diagram and the temperature distribution schematic diagram of the region between the first heating zone 112 and the second heating zone 113 in the heating pipe 11 without 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 works in 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, and the temperature difference is about 50℃. The temperature of the middle position of the first heating zone 112 is relatively low, and the temperature is lower than 216℃. 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 away from the first heating zone 112 is as high as 165℃. Moreover, it is difficult to distinguish the first heating zone 112 and the second heating zone 113 from the temperature distribution schematic diagram.

[0106] Please refer to Figure 10 and Figure 11 , Figure 10 and Figure 11 are the temperature curve schematic diagram and the temperature distribution schematic diagram of the region between the first heating zone 112 and the second heating zone 113 in the heating pipe 11 with the through groove 1144. Specifically, the heat resistance zone 114 has two symmetrical through grooves 1144, the through groove 1144 is arc-shaped, and the width W is about 0.35mm. The circumferential interval L between the two through grooves 1144 is about 2mm, so as to realize the connection of the first heating zone 112 and the second heating zone 113 through the heat resistance zone 114, and to ensure that the heat resistance zone 114 has sufficient strength, so that the heating pipe 11 can maintain the tubular shape without bending and breaking. From Figure 10 and Figure 11It can be clearly observed that when only the first heating zone 112 works in 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, and the temperature difference is about 90℃, which is obviously 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 without the through slot, and the temperature of the middle position of the first heating zone 112 is higher, which is higher than 230℃, and is obviously higher than the temperature of the middle position of the first heating zone 112 without the through slot. At the same time, the first heating zone 112 and the second heating zone 113 can be clearly distinguished, and the temperature of the end of the second heating zone 113 away from the first heating zone 112 is about 123.8℃.

[0107] Therefore, when the heat resistance zone 114 includes the through slot 1144, the heat conduction between the first heating zone 112 and the second heating zone 113 can be effectively hindered, and the heat cross talk between the first heating zone 112 and the second heating zone 113 can be effectively prevented.

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

[0109] In an embodiment, the blind hole 1141 or the through hole 1143 is a circular hole with a hole diameter less than the extension length of the first heating zone 112 and / or the second heating zone 113 in the longitudinal direction, and further, the hole diameter is less than or equal to 1 / 2 of the extension length of the first heating zone 112 and / or the second heating zone 113 in the longitudinal direction.

[0110] In an embodiment, the blind slot 1142 or the through slot 1144 has a width W in the longitudinal direction, which is less than the extension length of the first heating zone 112 and / or the second heating zone 113 in the longitudinal direction, and further, the width W is less than or equal to 1 / 2 of the extension length of the first heating zone 112 and / or the second heating zone 113 in the longitudinal direction.

[0111] It should be noted that in an embodiment, when the blind hole 1141, the blind slot 1142, the through hole 1143 and / or the through slot 1144 are provided on the heat resistance zone 114, the heating pipe 11 is an integrally formed tubular body, or the first heating zone 112, the heat resistance zone 114 and the second heating zone 113 are integrally formed; in other embodiments, when the blind hole 1141, the blind slot 1142, the through hole 1143 and / or the through slot 1144 are provided on the heat resistance zone 114, the heat resistance zone 114 can be connected with the first heating zone 112 and / or the second heating zone 113 by assembling 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 warmed up by absorbing at least part of the heat released from the first heating element 12, and then the first heating zone 112 releases at least part of the heat it has absorbed to heat the portion of the aerosol generating article 2 corresponding thereto.

[0113] Based on this, in one example, the first heating zone 112 can be a carrier of the first heating element 12, the first heating element 12 can be disposed on the first heating zone 112 so as to be in contact with the first heating zone 112, and the first heating element 12 and the first heating zone 112 are superimposed in the transverse direction of the heating tube 11. Figure 2 Figure 3 For example, the first heating element 12 comprises an infrared coating or a resistive heating material, which can be coated on the first heating zone 112 in a manner including but not limited to printing, spraying, physical deposition, chemical deposition, particle injection, or ion sputtering, etc. The infrared coating can generate Joule heat after obtaining the power provided by the power source 31 and emit infrared rays with a wavelength of 0.75 μm to 1000 μm, or the infrared coating can emit infrared rays with a wavelength of 0.75 μm to 1000 μm, such as far infrared rays with a wavelength of 1.5 μm to 400 μm or far infrared rays with a wavelength of 8 μm to 15 μm, after being excited. The resistive heating material includes but is 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 can 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 nickel-, iron-, and cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0114] For example, the first heating element 12 comprises an infrared coating or a resistive heating material, which can be coated on the first heating zone 112 in a manner including but not limited to printing, spraying, physical deposition, chemical deposition, particle injection, or ion sputtering, etc. The infrared coating can generate Joule heat after obtaining the power provided by the power source 31 and emit infrared rays with a wavelength of 0.75 μm to 1000 μm, or the infrared coating can emit infrared rays with a wavelength of 0.75 μm to 1000 μm, such as far infrared rays with a wavelength of 1.5 μm to 400 μm or far infrared rays with a wavelength of 8 μm to 15 μm, after being excited. The resistive heating material includes but is 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 can 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 nickel-, iron-, and cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0115] For example, the first heating element 12 comprises an infrared coating or a resistive heating material, which can be coated on the first heating zone 112 in a manner including but not limited to printing, spraying, physical deposition, chemical deposition, particle injection, or ion sputtering, etc. The infrared coating can generate Joule heat after obtaining the power provided by the power source 31 and emit infrared rays with a wavelength of 0.75 μm to 1000 μm, or the infrared coating can emit infrared rays with a wavelength of 0.75 μm to 1000 μm, such as far infrared rays with a wavelength of 1.5 μm to 400 μm or far infrared rays with a wavelength of 8 μm to 15 μm, after being excited. The resistive heating material includes but is 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 can 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 nickel-, iron-, and cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0116] ​In an embodiment, the first heating element 12 comprises a ferromagnetic material, such as ferrite, ferromagnetic steel or stainless steel. In an embodiment, the first heating element 12 comprises a nickel-iron alloy. In an embodiment, the first heating element 12 comprises a 400 series stainless steel, which includes a 410 grade or a 420 grade or a 430 grade stainless steel.

[0117] In an embodiment, the heating assembly 1 further comprises a first magnetic field generator 15 electrically connected to the power source 31 and capable of generating a varying magnetic field based on the power provided by the power source 31, at least a portion of the first heating element 12 being located in a magnetic field penetration range of the first magnetic field generator 15, so as to be capable of generating heat in the varying magnetic field generated by the first magnetic field generator 15. The first magnetic field generator 15 can comprise one or more first induction coils surrounding at least a portion of the first heating element 12 or the first heating zone 112.

[0118] It is to be noted that, in an embodiment, the first heating element 12 is arranged on the first heating zone 112, and the first heating zone 112 heats the aerosol generating article 2 by releasing at least part of the heat absorbed from the first heating element 12. In an embodiment, the first heating element 12 is arranged on the first heating zone 112, and the first heating zone 112 heats the aerosol generating article 2 by releasing at least part of the heat absorbed from the first heating element 12.

[0119] In an 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 from the second heating element 13, and then the second heating zone 113 releases at least part of the heat absorbed thereby to heat the portion of the aerosol generating article 2 corresponding thereto.

[0120] Based on this, in an embodiment, the second heating zone 113 can be a carrier of the second heating element 13, the second heating element 13 can be arranged on the second heating zone 113 so as to be in contact with the second heating zone 113, and the second heating element 13 and the second heating zone 113 are arranged in a stacked manner in the transverse direction of the heating tube. Figure 2 Figure 3 For example, the second heating element 13 comprises an infrared coating or a resistance heating material, which can be coated on the second heating zone 113.

[0121] For example, the second heating element 13 comprises an infrared coating or a resistance heating material, which can be coated on the second heating zone 113.

[0122] ​For example, the second heating element 13 comprises a metal ring, an electric heating wire or a metal sheet, which is held on the second heating zone 113 by sleeving, embedding or winding, wherein the metal ring, the electric heating wire or the metal sheet etc. 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 can generate heat in a changing magnetic field, the second heating element 13 can comprise metal or carbon. In an embodiment, the second heating element 13 can comprise a ferromagnetic material, such as ferrite, ferromagnetic steel or stainless steel. In an embodiment, the second heating element 13 comprises a nickel-iron alloy. In an embodiment, the second heating element 13 comprises a 400 series stainless steel, which comprises a 410 grade or a 420 grade or a 430 grade stainless steel.

[0124] When the second heating element 13 can generate 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 supply 31 and can generate a changing magnetic field based on the power provided by the power supply 31, at least a part of the second heating element 13 is located in the magnetic field penetration range of the second magnetic field generator 16, so as to generate heat in the changing magnetic field generated by the second magnetic field generator 16. The second magnetic field generator 16 can comprise one or more second induction coils, which are arranged around the periphery of the second heating zone 113 or at least a part of the second heating element 13.

[0125] It should be noted that when the second heating zone 113 heats the aerosol generating article 2 by releasing at least part of the heat absorbed from the second heating element 13, the second heating element 13 arranged on the second heating zone 113 is optional but not necessary, 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 they 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 comprises an infrared coating, the heating tube 11 can be made of an infrared light permeable 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 thereby can pass through the wall of the heating tube 11 to the aerosol generating article 2 in the accommodation cavity 111. Of course, when the first heating element 12 and / or the second heating element 13 comprises 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 an opaque material, such as ceramic or metal, or of course can be made of glass with a reflective surface.

[0127] In one embodiment, the heating assembly 1 includes both a first heating element 12 and a second heating element 13, and both the first heating element 12 and the second heating element 13 are electrically connected to a power supply 31 to generate Joule heating and / or emit infrared radiation based on the power supplied by the power supply 31. Based on this, reference can be made to... Figure 4 and Figure 5 The heating assembly 1 also includes a first electrode 171 and a second electrode 172 disposed on opposite sides of the heat-insulating region 114. The first heating element 12 is electrically connected to the first electrode 171 and is electrically connected to the power supply 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 supply 31 through the second electrode 172. The resistivity of the first electrode 171 is less than that of the first heating element 12, and the resistivity of the second electrode 172 is less than that of the second heating element 13. The first electrode 171 and the second electrode 172 can be made of the same material.

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

[0129] The first electrode 171 and the second electrode 172 can be electrically connected to the same output electrode of the power supply 31, while the common electrode 18 is electrically connected to the other output electrode of the power supply 31. For example, the common electrode 18 can be used to connect to the positive terminal of the power supply 31, thus becoming the common positive terminal of the first heating element 12 and the second heating element 13, while the first electrode 171 and the second electrode 172 are both used to connect to the negative terminal of the power supply 31. Alternatively, for example, the common electrode 18 can be used to connect to the negative terminal of the power supply 31, thus becoming the common negative terminal of the first heating element 12 and the second heating element 13, while the first electrode 12 and the second electrode 13 are both used to connect to the positive terminal of the power supply 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] Further, you can refer to Figure 3 The common electrode 18 is coated and disposed on the heating tube 11, and is partially disposed corresponding to the first heating area 112, partially disposed corresponding to the heat-insulating area 114, and partially disposed corresponding to the second heating area 113.

[0132] The area of the heat resistance zone 114 on which the common electrode 18 is coated can not be provided with the blind hole 1141, the blind groove 1142, the through hole 1143 or the through groove 1144. Of course, the coating of the common electrode 18, such as silver paste, can be filled in or injected into the blind hole 1141, the blind groove 1142, the through hole 1143 or the through groove 1144, so as to make the surface of the heating pipe 11 substantially flush, or to plug the through hole 1143 or the through groove 1144.

[0133] In the embodiment with the common electrode 18, the aerosol generating device can further include a first control switch provided between the first electrode 171 and the power supply 31, and a second control switch provided between the second electrode 172 and the power supply 31, both of which are electrically connected to the controller 32, and the controller 32 controls the first heating element 12 and the second heating element 13 to work 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 can independently heat the aerosol generating article.

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

[0136] For example, the first heating element 12 and the second heating element 13 work in mutual exclusion, specifically, if the first heating element 12 is arranged to work before the second heating element 13, when the first heating zone 112 heats the part of the aerosol generating article 2 corresponding thereto, the part of the aerosol generating article 2 corresponding to the first heating zone 112 can obtain sufficient heat to generate aerosol; after the first heating element 12 stops working, the second heating element 13 can start working to heat the part of the aerosol generating article 2 corresponding to the second heating zone 113, so that the part of the aerosol generating article 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 the first control switch is turned on, and then control the second control switch to be turned on after the first control switch is turned off.

[0137] Alternatively, as an example, the first heating element 12 is arranged to be operated prior to the second heating element 13, the second heating element 13 is arranged to be operated prior to the first heating element 12 ends operation, and the first heating element 12 is arranged to end operation prior to the second heating element 13. Thus, the first heating element 12 and the second heating element 13 can be operated simultaneously in a certain period of time. In this way, in the later stage of heating of the portion of the aerosol generating article 2 corresponding to the first heating zone 112, the aerosol generating capability of this portion is weakened, and thus the amount of aerosol generated gradually decreases, while the portion of the aerosol generating article 2 corresponding to the second heating zone 113 starts to generate aerosol due to the relatively more heat, and in the early stage of heating of this portion, the amount of aerosol generated gradually increases, so as to ensure that the total amount of aerosol generated by the aerosol generating article 2 is relatively stable, which helps to keep the aerosol concentration of each puff consistent, so that the aerosol of each puff has approximately the same fullness and taste.

[0138] Based on this, the controller 32 can 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 31 to output power to the heating assembly 1, so as to adjust the temperature and the temperature rising speed of the first heating element 12 and / or the second heating element 13.

[0140] As an example, reference can be made to Figure 4 The heating assembly 1 further comprises a third electrode 173 and a fourth electrode 174. The third electrode 173 is electrically connected to the 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 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 be independently operated, so that the first heating element 12 and the second heating element 13 can be operated in sequence, or the first heating element 12 can be operated prior to the second heating element 13, the second heating element 13 can be operated prior to the first heating element 12 ends operation, and the first heating element 12 can end operation prior to the second heating element 13.

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

[0142] When the heating assembly 1 comprises 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 comprises the heating tube 11 made of metal, thus the heating tube 11 is a metal tube, and the heating assembly 1 further comprises an insulating layer coated on the surface of the metal tube, 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 insulating coating described above, compared with the insulating tube, especially compared with the ceramic tube, the metal tube can have a smaller wall thickness, thus when rising to the same temperature, the metal tube can consume less heat, which helps to reduce the energy consumption of the heating assembly 1 and accelerate the temperature rising speed of the corresponding heating region on the heating tube 11, and facilitates to open the through hole 1143 or the through slot 1144 on the metal tube by laser cutting; in one embodiment, the heating tube 11 comprises an insulating tube, suitable insulating tubes include but are not limited to glass tube, quartz tube, ceramic tube or flow sheet tube, thus it can be unnecessary to arrange the insulating layer on the surface of the insulating tube to insulate and separate the heating elements and the heating tube 11, and it is convenient to form the blind hole 1141 or the blind slot 1142 on the heating tube 11.

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

[0144] In this embodiment, the heating assembly 1 further comprises a first induction coil and a second induction coil for generating a varying magnetic field, the first induction coil surrounds at least a part of the periphery of the first heating region 112, so that at least a part of the first heating region 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 part of the periphery of the second heating region 113, so that at least a part of the second heating region 113 in the heating tube 11 can generate heat in the magnetic field generated by the second induction coil; the thermal resistance region 114 is located outside the surrounding of the first induction coil and the second induction coil, so that the thermal resistance region 114 cannot generate heat or can only generate a small amount of heat when the magnetic fields generated by the first induction coil and the second induction coil.​

[0145] In one embodiment, the heating tube 11 is made of electrically resistive heating material, for example, made of electrically conductive ceramic, so that the heating tube 11 itself can generate heat, and thus in this embodiment, the heating element is optional but not necessary. However, the heating tube 11 needs to be electrically connected with the power source 31 to generate heat, so the heating assembly 1 further comprises electrodes electrically connected with the heating tube 11.

[0146] As an example, the heating assembly 1 further comprises a common electrode 18, a first electrode 171 and a second electrode 172, the common electrode 18 passes through the heat blocking region 114 and is electrically connected with the first heating region 112 and the second heating region 113 at the same time, the first electrode 171 and the second electrode 172 are arranged on opposite sides of the heat blocking region 114, and the first electrode 171 is electrically connected with the electrically resistive heating material on the first heating region 112, and the second electrode 172 is electrically connected with the electrically resistive heating material on the second heating region 113. Thus, the first heating region 112 itself can generate Joule heat, and the second heating region 113 itself can generate Joule heat.

[0147] At least one of the common electrode 18, the first electrode 171 and the second electrode 172 can be arranged on the heating tube 11 in a coating manner, for example, on the electrically conductive ceramic.

[0148] Alternatively, as an example, the heating assembly 1 further comprises a first electrode 171, a second electrode 172, a third electrode 173 and a fourth electrode 174, the electrically resistive heating material on the first heating region 112 is electrically connected with the first electrode 171 and the third electrode 173 to be electrically connected with the positive electrode and the negative electrode of the power source 31 through the first electrode 171 and the third electrode 173, so that the first heating region 112 can generate Joule heat; the electrically resistive heating material on the second heating region 113 is electrically connected with the second electrode 172 and the fourth electrode 174 to be electrically connected with the positive electrode and the negative electrode of the power source 31 through the second electrode 172 and the fourth electrode 174, so that the second heating region 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 can be arranged on the heating tube 11 in a coating manner, for example, on the electrically 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, and further, those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A heating assembly, characterized by, The heating assembly comprises a heating tube capable of accommodating at least partially an aerosol generating article, the heating tube having a first heating zone, a second heating zone and a heat blocking zone distributed thereon, the first heating zone and the second heating zone being respectively configured to heat different parts of the aerosol generating article; The heat blocking zone is arranged 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 of claim 1, wherein, The heat blocking zone has a wall thickness that is smaller than that of the first heating zone or the second heating zone at least partially.

3. The heating assembly of claim 2, wherein, The heat blocking zone has one or more blind holes; or The heat blocking zone has one or more blind grooves.

4. The heating assembly of claim 3, wherein, The heating assembly comprises a heat insulation filler filled in or injected into the blind hole or blind groove to make the surface of the heating tube substantially flush.

5. The heating assembly of claim 1, wherein, The wall of the heat blocking zone is provided with one or more through holes and / or one or more through grooves.

6. The heating assembly of claim 5, wherein, The heating assembly further comprises a shielding member arranged on the heating tube and covering the through hole or through groove.

7. The heating assembly of claim 6, wherein, The shielding member comprises a solid heat insulation layer, a PI film, a high-temperature adhesive tape or a heat shrink tube.

8. The heating assembly of claim 5, wherein, The heating assembly comprises a heat insulation filler filled in or injected into the through hole or through groove; or The heating assembly further comprises an insulating coating, part of which is coated on the surface of the heating tube and part of which is filled in or injected into the through hole or through groove.

9. The heating assembly of claim 5, wherein, The heating tube has an accommodating cavity inside for accommodating at least partially the aerosol generating article, and the through hole or through groove communicates with the accommodating cavity; The opening area of the through hole or through groove towards the accommodating cavity is smaller than the opening area of the through hole or through groove away from the accommodating cavity.

10. The heating assembly of claim 1, wherein, The heating assembly further comprises a first heating element, and the first heating zone is configured to heat the aerosol generating article by releasing at least part of the heat absorbed by the first heating element; and / or The heating assembly further comprises a second heating element, and the second heating zone is configured to heat the aerosol generating article by releasing at least part of the heat absorbed by the second heating element.

11. The heating assembly of claim 10, wherein, The first heating element is arranged on the first heating zone; and / or The second heating element is arranged on the second heating zone.

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

13. The heating assembly of claim 10, wherein, The heating tube is made of infrared-transparent material; wherein The first heating element comprises an infrared coating arranged on the outer surface of the heating tube; and / or The second heating element comprises an infrared coating arranged on the outer surface of the heating tube.

14. The heating assembly of claim 10, wherein, The first heating element comprises an electrically resistive heating material; and / or The second heating element comprises an electrically resistive heating material. The second heating element comprises an electrically resistive heating material.

15. The heating assembly of claim 13 or 14, wherein, The heating assembly comprises the first heating element and the second heating element, and further comprises a first electrode and a second electrode arranged on opposite sides of the thermal resistance region, the first electrode being electrically connected to the first heating element, and the second electrode being electrically connected to the second heating element.

16. The heating assembly of claim 15, wherein, The heating assembly further comprises 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 of claim 16, wherein, The common electrode is coated on the heating tube and arranged corresponding to the first heating region, the thermal resistance region and the second heating region.

18. The heating assembly of claim 15, wherein, The heating assembly further comprises a third electrode and a fourth electrode arranged on opposite sides of the thermal resistance region, 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.

19. The heating assembly of claim 13 or 14, wherein, The heating assembly comprises a heating tube made of metal and an insulating layer coated on the surface of the heating tube, the insulating layer being 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 of claim 1, wherein, The heating tube is configured to generate heat in a varying magnetic field, and the heating assembly further comprises a first induction coil and a second induction coil for generating the varying magnetic field, the first induction coil being arranged around at least a part of the periphery of the first heating region, and the second induction coil being arranged around at least a part of the periphery of the second heating region, the thermal resistance region being located outside the arrangement of the first induction coil and the second induction coil.

21. The heating assembly of claim 1, wherein, The heating tube is made of an electrically resistive heating material; wherein, The heating assembly further comprises a common electrode, a first electrode and a second electrode, the common electrode passing through the thermal resistance region and being electrically connected to the first heating region and the second heating region, the first electrode and the second electrode being arranged on opposite sides of the thermal resistance region, the first electrode being electrically connected to the first heating region, and the second electrode being electrically connected to the second heating region; or The heating assembly further comprises a first electrode, a second electrode, a third electrode and a fourth electrode, the first heating region being electrically connected to the first electrode and the third electrode, and the second heating region being electrically connected to the second electrode and the fourth electrode.

22. The heating assembly of claim 1, wherein, The first heating region, the thermal resistance region and the second heating region are arranged in sequence along the longitudinal direction of the heating tube.

23. The heating assembly of claim 1, wherein, The heating tube is an integrally formed tubular body, or the thermal resistance region, the first heating region and the second heating region are integrally formed.

24. An aerosol-generating device comprising: The heating assembly as claimed in any one of claims 1-23, further comprising a power supply and a controller, the controller being electrically connected to the power supply to control the power supply to provide power for the heating assembly to heat the aerosol generating article, and the first heating region and the second heating region being configured to independently heat the aerosol generating article.

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