Heater and smoking article including the heater

Abstract

The present application relates to the field of smoking articles, and provides a heater and a smoking article including the heater, the heater including: a heating element in the shape of a hollow tube, and a chamber for receiving at least part of the smoking article is formed inside; a fixing seat, having an air inlet; the fixing seat is fixed to one end of the heating element, and the air inlet is connected to the chamber; an airflow bracket, connected to the first fixing seat; the airflow bracket includes a central airflow channel; the central airflow channel is configured to be inserted into the air inlet end of the smoking article, so that at least part of the airflow flowing out of the air inlet is introduced into the air inlet end of the smoking article through the central airflow channel. The present application uses the central airflow channel and multiple peripheral airflow channels to allow the airflow flowing out of the air inlet to be introduced into the interior of the cigarette at least through the central airflow channel, thereby reducing the heat exchange between the airflow and the interior of the cigarette, lowering the temperature of the smoke outlet, and improving the user experience.

Description

Technical Field

[0001] The present application relates to the field of smoking articles, and in particular to a heater and a smoking article comprising the heater. Background Art

[0002] Smoking articles such as cigarettes and cigars burn tobacco to produce smoke during use. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning. Examples of such products are so-called heat-not-burn products, which release compounds by heating tobacco rather than burning it.

[0003] An existing low-temperature heat-not-burn smoking device mainly comprises a far-infrared coating and a conductive coating coated on the outer surface of a substrate. When energized, the far-infrared coating emits far-infrared rays that penetrate the substrate and heat the aerosol-forming matrix in the substrate. Since far-infrared rays have strong penetrability, they can penetrate the periphery of the aerosol-forming matrix and enter the interior, making the heating of the aerosol-forming matrix more uniform.

[0004] The problem with the smoking device using the above structure is that the temperature of the smoke outlet is relatively high, causing the user to feel hot in the mouth when inhaling, which reduces the user experience. Summary of the invention

[0005] The present application provides a heater and a smoking article including the heater, aiming to solve the problem of high temperature of the smoke outlet in the existing smoking articles.

[0006] In a first aspect, the present application provides a heater, comprising:

[0007] The heating element is in the shape of a hollow tube and has a chamber formed therein for receiving at least part of the smoking article; the heating element is used to receive electric power from a power source to generate heat, and transfer the heat to the smoking article received in the chamber, so that at least one component in the smoking article is volatilized to form an aerosol that can be smoked;

[0008] A first fixing seat having an air inlet; the first fixing seat is fixed to one end of the heating element, and the air inlet is connected to the chamber; and

[0009] An airflow bracket is connected to the first fixing seat; the airflow bracket includes a central airflow channel; the central airflow channel is configured to be inserted into the air inlet end of the smoking article so that at least part of the airflow flowing out of the air inlet hole is introduced into the air inlet end of the smoking article through the central airflow channel.

[0010] A second aspect of the present application provides a smoking article, characterized in that the smoking article comprises a shell assembly and the heater described in the first aspect; the heater is disposed in the shell assembly.

[0011] The heater provided in the present application and the smoking device including the heater, through a central airflow channel and multiple peripheral airflow channels, can guide the airflow flowing out of the air inlet hole into the interior of the cigarette at least through the central airflow channel, thereby reducing the heat exchange between the airflow and the interior of the cigarette, lowering the temperature of the smoke outlet, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute a scale limitation.

[0013] Figure 1 It is a schematic diagram of a heater provided in Embodiment 1 of the present application;

[0014] Figure 2 yes Figure 1 Schematic diagram of the decomposition of

[0015] Figure 3 is a cross-sectional schematic diagram of a heater inserted into a smoking article provided in Embodiment 1 of the present application;

[0016] Figure 4 is a schematic diagram of a substrate in a heater provided in Embodiment 1 of the present application;

[0017] Figure 5 This is a schematic diagram of a first fixing seat in a heater provided in Embodiment 1 of the present application;

[0018] Figure 6 It is a schematic diagram of the first fixing seat and the airflow bracket of the heater provided in the first embodiment of the present application after being assembled;

[0019] Figure 7 This is a schematic diagram of an air inlet bracket in an airflow bracket provided in Embodiment 1 of the present application;

[0020] Figure 8 It is a bottom view schematic diagram of the heater provided in the first embodiment of the present application after the first fixing seat and the airflow bracket are assembled;

[0021] Fig. 9 This is a schematic diagram of an extension tube in an airflow bracket provided in Embodiment 1 of the present application;

[0022] Fig.10 It is a schematic diagram of another extension tube in the airflow bracket provided in the first embodiment of the present application;

[0023] Fig.11 This is a schematic diagram of another extension tube in the airflow bracket provided in the first embodiment of the present application;

[0024] Fig.12 It is a schematic diagram of the assembly of a first fixing seat and another airflow bracket in another heater provided in the first embodiment of the present application;

[0025] Fig.13 is a bottom view schematic diagram of another heater provided in Embodiment 1 of the present application after the first fixing seat and another airflow bracket are assembled;

[0026] Fig.14 is a cross-sectional schematic diagram of another heater inserted into a smoking article provided in the first embodiment of the present application;

[0027] Fig.15 It is a schematic diagram of a substrate in another heater provided in the first embodiment of the present application;

[0028] Fig.16 This is a schematic diagram of a smoking device provided in Embodiment 2 of the present application;

[0029] Fig.17 It is a schematic diagram of the decomposition of the smoking device provided in the second embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0032] Implementation Method 1

[0033] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a heater, wherein the heater 1 comprises a heating element 11, an electrode portion (12, 13), a first fixing seat 14 and an airflow bracket (15, 16);

[0034] Please combine Figure 4It is understood that, in this example, the heat generating body 11 includes a base body 111 and an infrared electric heating coating 112 .

[0035] A chamber for receiving at least part of the smoking article 2 is formed inside the substrate 111. Specifically, the substrate 111 has a first end and a second end opposite to each other, and the substrate 111 extends longitudinally between the first end and the second end and is hollow inside to form a chamber suitable for receiving at least part of the smoking article 2. The substrate 111 may be cylindrical, prism-shaped or other cylindrical shapes. The substrate 111 is preferably cylindrical, and the chamber is a cylindrical hole that passes through the middle of the substrate 111, and the inner diameter of the hole is slightly larger than the outer diameter of the smoking article 2. The heating element 11 receives the electric power of the power supply to generate heat, and transfers the heat to the smoking article 2 received in the chamber, so that at least one component of the aerosol-forming matrix in the smoking article 2 volatilizes to form an aerosol that can be inhaled.

[0036] The substrate 111 can be made of high temperature resistant and transparent materials such as quartz glass, ceramics or mica, or other materials with high infrared transmittance, for example, high temperature resistant materials with infrared transmittance of more than 95%, which is not specifically limited here.

[0037] An aerosol-forming substrate is a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol-forming substrate. The aerosol-forming substrate can be solid or liquid or include solid and liquid components. The aerosol-forming substrate can be adsorbed, coated, impregnated or otherwise loaded onto a carrier or support.

[0038] The aerosol-forming substrate may include nicotine. The aerosol-forming substrate may include tobacco, for example, may include a tobacco-containing material containing volatile tobacco flavor compounds, which are released from the aerosol-forming substrate when heated. A preferred aerosol-forming substrate may include a homogenized tobacco material, such as fallen leaf tobacco. The aerosol-forming substrate may include at least one aerosol-forming agent, which may be any suitable known compound or a mixture of compounds, which, in use, is conducive to the formation of a dense and stable aerosol and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating system. Suitable aerosol-forming agents are well known in the art and include, but are not limited to, polyols, such as triethylene glycol, 1,3-butanediol and glycerol; esters of polyols, such as glycerol mono-, di- or triacetates; and fatty acid esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanoic acid. Preferred aerosol formers are polyhydric alcohols or mixtures thereof, such as triethylene glycol, 1,3-butylene glycol and most preferably glycerol.

[0039] The infrared electrothermal coating 112 is coated on the surface of the substrate 111. The infrared electrothermal coating 112 can be coated on the outer surface of the substrate 111 or on the inner surface of the substrate 111. Preferably, the infrared electrothermal coating 112 is coated on the outer surface of the substrate 111.

[0040] The infrared electrothermal coating 112 can generate heat energy when powered, thereby generating infrared rays of a certain wavelength, for example, far infrared rays of 8 μm to 15 μm. When the wavelength of the infrared rays matches the absorption wavelength of the aerosol-forming matrix, the energy of the infrared rays is easily absorbed by the aerosol-forming matrix. In the embodiment of the present application, the wavelength of the infrared rays is not limited, and can be infrared rays of 0.75 μm to 1000 μm, preferably far infrared rays of 1.5 μm to 400 μm.

[0041] The infrared electrothermal coating 112 is preferably prepared by mixing far-infrared electrothermal ink, ceramic powder and inorganic adhesive, and then printing them on the outer surface of the substrate 111, and then drying and curing them for a certain period of time. The thickness of the infrared electrothermal coating 112 is 30μm-50μm; of course, the infrared electrothermal coating 112 can also be prepared by mixing tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride and anhydrous copper sulfate in a certain proportion and then coating them on the outer surface of the substrate 111; or a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium oxide ceramic layer, a zirconium One of the following: titanium nitride ceramic layer, zirconium-titanium boride ceramic layer, zirconium-titanium carbide ceramic layer, iron oxide ceramic layer, iron nitride ceramic layer, iron boride ceramic layer, iron carbide ceramic layer, rare earth oxide ceramic layer, rare earth nitride ceramic layer, rare earth boride ceramic layer, rare earth carbide ceramic layer, nickel-cobalt oxide ceramic layer, nickel-cobalt nitride ceramic layer, nickel-cobalt boride ceramic layer, nickel-cobalt carbide ceramic layer or high silicon molecular sieve ceramic layer; the infrared electrothermal coating 112 can also be a coating of other existing materials.

[0042] In this example, the electrode portion (12, 13) includes at least a first electrode 12 and a second electrode 13 spaced apart on the heating element 11, and both the first electrode and the second electrode are electrically connected to the infrared electrothermal coating 112 for feeding electrical power to the infrared electrothermal coating 112.

[0043] Specifically, the first electrode 12 and the second electrode 13 are at least partially electrically connected to the infrared electrothermal coating 112, so that current can flow from one electrode to the other electrode via the infrared electrothermal coating 112. The polarities of the first electrode 12 and the second electrode 13 are opposite, for example: the first electrode 12 is a positive electrode and the second electrode 13 is a negative electrode; or the first electrode 12 is a negative electrode and the second electrode 13 is a positive electrode. Preferably, the infrared electrothermal coating 112 is coated on the outer surface of the substrate 111, the first electrode 12 is disposed on the outer surface of the substrate 111 close to the first end, and the second electrode 13 is disposed on the outer surface of the substrate 111 close to the second end.

[0044] In this example, the first electrode 12 and the second electrode 13 are both in annular shape (annular electrodes), and the first electrode 12 and the second electrode 13 can be annular conductive coatings coated on the outer surface of the substrate 111 near the first end and the second end. The conductive coating can be a metal coating or a conductive tape, etc. The metal coating can include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium or the above metal alloy materials. In other examples, it can also be an annular conductive sheet sleeved on the outer surface of the substrate 111 near the first end and the second end, and the conductive sheet is a metal conductive sheet, such as a copper sheet, a steel sheet, etc.

[0045] Please combine Figure 5 It is understood that the first fixing base 14 has an air inlet 141 . The first fixing base 14 is fixed to one end of the heating element 11 . The air inlet 141 is communicated with the cavity of the base 111 .

[0046] Please combine Figure 6-Figure 8 It is understood that the airflow bracket ( 15 , 16 ) includes an air inlet hole bracket 15 and an extension pipe 16 .

[0047] The air inlet bracket 15 is disposed in the air inlet 141; the air inlet bracket 15 can be integrally formed with the air inlet 141, or can be a detachable component. The air inlet bracket 15 can also be partially disposed in the air inlet 141, or sleeved on the air inlet 141. The air inlet bracket 15 includes a central air inlet pipe 151 and a plurality of fins 152, which are distributed at intervals on the outer surface of the central air inlet pipe 151 and extend from the outer surface of the central air inlet pipe 151 along the radial direction of the air inlet 141 to the inner surface of the air inlet 141.

[0048] One end of the extension tube 16 is fixed to the central air inlet tube 151, and the other end of the extension tube 16 can be inserted into the air inlet end of the smoking article 2 received in the cavity of the base 111;

[0049] The inner surfaces of the central air inlet pipe 151 and the extension pipe 16 define a central air flow channel A; the two adjacent fins 152, a portion of the outer surface of the central air inlet pipe 151, and a portion of the inner surface of the air inlet hole 141 define a peripheral air flow channel B. The cross-sectional area of ​​the central air flow channel A is less than or equal to the cross-sectional area of ​​the peripheral air flow channel B.

[0050] In this example, the other end of the extension tube 16 is an air outlet, so that part of the airflow flowing out from the air inlet hole 141 passes through the central air inlet pipe 151, and is introduced into the air inlet end of the smoking article 2 from near the end of the other end of the extension tube 16 (i.e., near the end of the central airflow channel A), and the peripheral airflow channel B extends to the air inlet end of the smoking article 2 received in the chamber of the base 111, so that part of the airflow flowing out from the air inlet hole 141 is introduced into the air inlet end of the smoking article 2 through the peripheral airflow channel B.

[0051] In this example, the cross section of the central air intake pipe 151 is circular, and the plurality of fins 152 are evenly spaced along the circumferential direction of the central air intake pipe 151. It should be noted that the cross section of the central air intake pipe 151 is not limited to a circle, but may also be a regular polygon, a pentagonal star, and the like.

[0052] In this example, the number of fins 152 is 8, and the 8 fins 152 are evenly spaced along the circumferential direction of the central air inlet pipe 151 to form 8 peripheral air flow channels B. In other examples, the number of fins 152 may be an integer multiple of 2, such as 4, 16, 32, and so on.

[0053] Please combine Figure 6 , Figure 9-11It is understood that one end of the extension tube 16 can be sleeved on the central intake pipe 151, and the other end of the extension tube 16 has a flat shape. In order to facilitate the insertion of the other end of the extension tube 16 into the interior of the smoking article 2 received in the chamber of the base body 111, in another example, the shape of the other end of the extension tube 16 can be a wavy shape C, a serrated shape D or a pointed shape E. Preferably, it is the pointed shape E, and the aerosol-forming matrix in the smoking article 2 will not fall into the extension tube 16, thus facilitating cleaning. An air outlet can be provided at the end of the pointed shape E, or it is also feasible to provide an air outlet at other parts of the pointed shape E. It should be noted that the shape of the other end of the extension tube 16 shown in the figure can also be closed, and the air outlet is provided on the side wall of the extension tube 16, and multiple air outlets can be provided at different positions on the side wall. In this way, part of the air flow flowing out from the air inlet hole 141 is respectively introduced into different positions inside the intake end of the smoking article 2 through the central intake pipe 151 and the extension tube 16 (i.e., the central air flow channel A). The ratio n of the length of the extension tube 16 in the longitudinal direction to the length of the chamber of the base body 111 in the longitudinal direction is 0 < n <= 0.8, preferably 0 < n <= 0.6, and further preferably 0 < n <= 0.5.

[0054] Please refer to Figure 12-14 for understanding. In another example, the air flow brackets (142, 143) are integrally formed with the air inlet hole 141. The air flow brackets include eight cantilevers 142 longitudinally extending from the inner surface of the air inlet hole 141, and connecting plates 143 are provided between adjacent two cantilevers 142. In this example, four connecting plates 143 are provided between the eight cantilevers 142. One side of the four connecting plates 143 facing the center point O of the air inlet hole 141 defines the central air flow channel a; between the adjacent two cantilevers 142, the side of the connecting plate 143 facing away from the center point O of the air inlet hole 141 and a part of the inner surface of the air inlet hole 141 define a part of the peripheral air flow channel b.

[0055] In this example, part of the air flow flowing out from the air inlet hole 141 is introduced into the interior of the intake end of the smoking article 2 through the central air flow channel a, and the peripheral air flow channel b also extends to the interior of the intake end of the smoking article 2 received in the chamber of the base body 111, so that part of the air flow flowing out from the air inlet hole 141 is introduced into the interior of the intake end of the smoking article 2 through the peripheral air flow channel b.

[0056] In this example, the cross-section of the air inlet hole 141 is circular, and the circumferential length of the side of the connecting plate 143 facing away from the center point O of the air inlet hole 141 is 0 to 2πr / N.

[0057] The distance between the side of the connecting plate 143 facing away from the center point O of the air inlet hole 141 and a part of the inner surface of the air inlet hole 141 is less than or equal to r; where r is the radius of the air inlet hole 141 and N is the number of connecting plates 143, that is, N = 4.

[0058] It should be noted that the number of connecting plates 143 is not limited to that shown in the figure.

[0059] Please refer to Fig.15 As shown, in another example, the heating element 11 includes a base 111 , an infrared radiation layer 113 and an electric heating portion 114 .

[0060] The substrate 111 may refer to the aforementioned description of the substrate, which will not be elaborated here.

[0061] The infrared radiation layer 113 is formed on the outer surface of the substrate 111. The infrared radiation layer 113 may be formed on the outer surface of the substrate 111 or on the inner surface of the substrate 111. Preferably, the infrared radiation layer 113 is formed on the outer surface of the substrate 111.

[0062] After absorbing heat, the infrared radiation layer 113 can heat up and generate infrared rays of a certain wavelength, for example, far infrared rays of 8 μm to 15 μm. When the wavelength of the infrared rays matches the absorption wavelength of the aerosol-forming matrix, the energy of the infrared rays is easily absorbed by the aerosol-forming matrix. In this example, the wavelength of the infrared rays is not limited, and can be infrared rays of 5 μm to 15 μm, preferably far infrared rays of 8 μm to 15 μm.

[0063] The infrared radiation layer 113 can be made of materials with high infrared radiation rates such as oxides, carbon materials, carbides, and nitrides. Specifically, as shown below:

[0064] Metal oxides and multi-component alloy oxides, including: ferric oxide, aluminum oxide, chromium oxide, indium oxide, lanthanum oxide, cobalt oxide, nickel oxide, antimony oxide, antimony pentoxide, titanium dioxide, zirconium dioxide, manganese dioxide, cerium dioxide, copper oxide, zinc oxide, magnesium oxide, calcium oxide, molybdenum trioxide, etc.; it can also be a combination of two or more of the above metal oxides; it can also be a ceramic material with a unit cell structure such as spinel, perovskite, olivine, etc.

[0065] The emissivity of carbon materials is close to the black body characteristics and has a high infrared emissivity. Carbon materials include: graphite, carbon fiber, carbon nanotubes, graphene, diamond-like carbon film, etc.

[0066] Carbides include: silicon carbide, which has high emissivity in a larger infrared wavelength range (2.3 microns-25 microns) and is a better near-full-band infrared radiation material; in addition, there are tungsten carbide, iron carbide, vanadium carbide, titanium carbide, zirconium carbide, manganese carbide, chromium carbide, niobium carbide, etc., all of which have high infrared emissivity (the MeC phase does not have a strict chemical calculation composition and chemical formula).

[0067] Nitrides include: metal nitrides and non-metal nitrides, among which metal nitrides include: titanium nitride, titanium carbonitride, aluminum nitride, magnesium nitride, tantalum nitride, vanadium nitride, etc.; non-metal nitrides include: boron nitride, phosphorus pentane nitride, silicon nitride (Si3N4), etc.

[0068] Other inorganic non-metallic materials include: silicon dioxide, silicates (including phosphosilicates, borosilicates, etc.), titanates, aluminates, phosphates, borides, sulfur compounds, etc.

[0069] The electric heating part 114 is arranged on the outer surface of the substrate 111; the electric heating part 114 is used to receive electric power to generate heat and transfer the generated heat to the infrared radiation layer 113; the infrared radiation layer 113 is used to receive the heat transferred by the electric heating part 114 and then generate infrared rays, and transfer the energy of the infrared rays to the smoking article 2 received in the cavity of the substrate 111 in the form of at least radiation.

[0070] In this example, the electric heating part 114 includes a resistive heating layer (not shown in the drawings) formed on the infrared radiation layer 113 and an electrode part (not shown in the drawings) electrically connected to the resistive heating layer; the electrode part is used to feed electric power from the power supply to the resistive heating layer to generate heat.

[0071] The shape of the resistive heating layer is not limited here, and it can be spirally wrapped around the surface of the substrate 111, or it can cover the surface of the substrate 111.

[0072] The resistance heating layer can be made of metal materials, carbon materials, semiconductor materials, etc. Specifically:

[0073] Conductive metal materials include aluminum, copper, titanium, chromium, silver, iron, nickel, etc.; they may also be alloy components of the above metals, such as stainless steel, iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, etc.;

[0074] Carbon materials, including graphite, conductive diamond-like carbon, carbon fiber, carbon nanotubes, graphene, etc.;

[0075] Semiconductor materials, including: indium tin oxide, nickel oxide, silicon carbide, aluminum nitride, gallium nitride, doped tin oxide, zinc oxide, doped zinc oxide, such as: AZO, GZO, IZO, doped B, doped N, P, As, Sb, Mo, doped La series elements, doped IA (Li, Na, K), IB group (Au, Ag, Cu) elements, etc.

[0076] According to the heating temperature and power requirements, a suitable resistive heating layer material is selected to form a resistive film of appropriate thickness to obtain a suitable resistance range. The resistance value of the resistive heating layer can be 0.1 ohm-10 ohms, preferably 0.3 ohm-8 ohms, more preferably 0.5 ohm-5 ohms, and further preferably 0.6 ohm-3.5 ohms.

[0077] In this example, the resistance heat generating layer is deposited on the infrared radiation layer 113 by a physical vapor deposition method, and the infrared radiation layer 113 is deposited on the surface of the substrate 111 by a physical vapor deposition method.

[0078] It should be noted that, in other embodiments, the electric heating part 114 can be a heating element separable from the infrared radiation layer 113, for example: a ceramic heating element sleeved on the outside of the infrared radiation layer 113, a metal heating element sleeved on the outside of the infrared radiation layer 113, a heating wire wrapped around the infrared radiation layer 113, an FPC heating film wrapped around the infrared radiation layer 113, and the like.

[0079] Implementation Method 2

[0080] Figure 16-Figure 17 The second embodiment of the present application provides a smoking device 100, comprising a housing assembly 6 and the above-mentioned heater 1, wherein the heater 1 is disposed in the housing assembly 6. The smoking device 100 of this embodiment has an infrared electrothermal coating 112 and a first electrode 12 and a second electrode 13 conductively connected to the infrared electrothermal coating 112 disposed on the outer surface of the substrate 111, and the infrared electrothermal coating 112 can emit infrared rays to radiate and heat the aerosol-forming substrate in the chamber of the substrate 111.

[0081] The shell assembly 6 comprises an outer shell 61, a fixed shell 62, a fixed seat (14, 17) and a bottom cover 64, wherein the fixed shell 62 and the fixed seat (14, 17) are both fixed in the outer shell 61, wherein the fixed seat (14, 17) is used to fix the base 111, the fixed seat (14, 17) is arranged in the fixed shell 62, and the bottom cover 64 is arranged at one end of the outer shell 61 and covers the outer shell 61. Specifically, the fixing seat (14, 17) includes a first fixing seat 14 and a second fixing seat 17, both of which are arranged in the fixing shell 62, and the first end and the second end of the base 111 are fixed on the first fixing seat 14 and the second fixing seat 17 respectively, and an air intake pipe 641 is convexly provided on the bottom cover 64, and the end of the second fixing seat 17 away from the first fixing seat 14 is connected to the air intake pipe 641, the first fixing seat 14, the base 111, the second fixing seat 17 and the air intake pipe 641 are coaxially arranged, and the base 111 is sealed with the first fixing seat 14 and the second fixing seat 17, and the second fixing seat 17 is also sealed with the air intake pipe 641, and the air intake pipe 641 is connected with the outside air so that the user can smoothly inhale when inhaling. The heater 1 further comprises an airflow support (15, 16), the airflow support (15, 16) comprising a central airflow channel A and a plurality of peripheral airflow channels B surrounding the central airflow channel A; the central airflow channel A can be inserted into the interior of at least a portion of the smoking article 2 received in the chamber of the base 111, so that the airflow flowing out of the air inlet hole of the first fixing seat 14 is introduced into the interior of the smoking article 2 through the central airflow channel A. The peripheral airflow channels B extend to the bottom of the smoking article 2 received in the chamber of the base 111, so that the airflow flowing out of the air inlet hole of the first fixing seat 14 is introduced into the bottom of the smoking article 2 through the peripheral airflow channels B.

[0082] The smoking device 100 also includes a control circuit 3 and a battery 7. The fixed shell 62 includes a front shell 621 and a rear shell 622, which are fixedly connected. The control circuit 3 and the battery 7 are both arranged in the fixed shell 62, and the battery 7 is electrically connected to the control circuit 3. The button 4 is convexly arranged on the shell 61. By pressing the button 4, the infrared electric heating coating 112 on the surface of the substrate 111 can be powered on or off. The control circuit 3 is also connected to a charging interface 31, which is exposed on the bottom cover 64. The user can charge or upgrade the smoking device 100 through the charging interface 31 to ensure the continuous use of the smoking device 100.

[0083] The smoking device 100 further includes an insulation tube 8, which is disposed in the fixed shell 62 and is disposed on the periphery of the substrate 111. The insulation tube 8 can prevent a large amount of heat from being transferred to the shell 61 and causing the user to feel hot. The insulation tube includes an insulation material, which can be insulation glue, aerogel, aerogel felt, asbestos, aluminum silicate, calcium silicate, diatomaceous earth, zirconium oxide, etc. The insulation tube can also include a vacuum insulation tube. The insulation tube 8 can also be coated with an infrared reflective coating to reflect the infrared rays emitted by the infrared electric heating coating 112 on the substrate 111 back to the infrared electric heating coating 112 to improve the heating efficiency.

[0084] The smoking device 100 also includes a temperature sensor, such as an NTC temperature sensor 5, which is used to detect the real-time temperature of the substrate 111 and transmit the detected real-time temperature to the control circuit 3. The control circuit 3 adjusts the magnitude of the current flowing through the infrared electrothermal coating 112 according to the real-time temperature. Specifically, when the NTC temperature sensor 5 detects that the real-time temperature inside the substrate 111 is low, for example, when the temperature inside the substrate 111 is less than 150°C, the control circuit 3 controls the battery 7 to output a higher voltage to the electrode, thereby increasing the current fed into the infrared electrothermal coating 112, increasing the heating power of the aerosol-forming matrix, and reducing the time the user has to wait for the first puff. When the NTC temperature sensor 5 detects that the temperature of the substrate 111 is 150°C-200°C, the control circuit 3 controls the battery 7 to output a normal voltage to the electrode. When the NTC temperature sensor 5 detects that the temperature of the substrate 111 is between 200°C and 250°C, the control circuit 3 controls the battery 7 to output a lower voltage to the electrode; when the NTC temperature sensor 5 detects that the temperature inside the substrate 111 is at 250°C or above, the control circuit 3 controls the battery 7 to stop outputting voltage to the electrode.

[0085] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present application; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A heater, characterized in that: The heater comprises: The heating element is in the shape of a hollow tube and has a chamber formed therein for receiving at least part of the smoking article; the heating element is used to receive electric power from a power source to generate heat, and transfer the heat to the smoking article received in the chamber, so that at least one component in the smoking article is volatilized to form an aerosol that can be smoked; A first fixing seat having an air inlet; the first fixing seat is fixed to one end of the heating element, and the air inlet is connected to the chamber; and an airflow bracket connected to the first fixing seat; the airflow bracket comprises a central airflow channel; the central airflow channel is configured to be inserted into the air inlet end of the smoking article so that at least part of the airflow flowing out of the air inlet hole is introduced into the air inlet end of the smoking article through the central airflow channel; The airflow support further comprises a peripheral airflow channel arranged around the central airflow channel; the peripheral airflow channel guides part of the airflow flowing out of the air inlet hole to the air inlet end of the smoking article.

2. The heater according to claim 1, characterized in that The airflow bracket includes an air inlet bracket and an extension pipe; The air inlet support is at least partially disposed in the air inlet; the air inlet support comprises a central air inlet pipe and a plurality of fins, the plurality of fins are spaced and distributed on the outer surface of the central air inlet pipe and extend from the outer surface of the central air inlet pipe to the inner surface of the air inlet; One end of the extension tube is fixed to the central air inlet tube, and the other end of the extension tube can be inserted into the air inlet end of the smoking article; The inner surfaces of the central air inlet pipe and the extension pipe define the central air flow channel; The peripheral air flow channel is defined between two adjacent fins, a portion of the outer surface of the central air inlet pipe, and a portion of the inner surface of the air inlet hole.

3. The heater according to claim 2, characterized in that The cross section of the central air intake pipe is circular, and the plurality of fins are distributed at equal intervals along the circumferential direction of the central air intake pipe.

4. The heater according to claim 3, characterized in that The number of the plurality of fins is an integer multiple of 2.

5. The heater according to claim 2, characterized in that The other end of the extension tube is at least one of flat, wavy, serrated, and pointed.

6. The heater according to claim 2, characterized in that The air inlet bracket is integrally formed with the air inlet.

7. The heater according to claim 2, characterized in that The cross-sectional area of ​​the central air inlet pipe is less than or equal to the sum of the cross-sectional areas of the peripheral air flow channels.

8. The heater according to claim 2, characterized in that The ratio n of the length of the extension tube in the longitudinal direction to the length of the chamber in the longitudinal direction is 0. <n<=0.8。 9. The heater according to claim 1, characterized in that The peripheral airflow channel extends to the interior of the air inlet end of the smoking article, so that part of the airflow flowing out of the air inlet hole is introduced into the interior of the air inlet end of the smoking article through the peripheral airflow channel.

10. The heater according to claim 9, characterized in that The airflow bracket is integrally formed with the air inlet hole, and the airflow bracket includes a plurality of cantilevers extending longitudinally from the inner surface of the air inlet hole, and a connecting plate is provided between two adjacent cantilevers; The central air flow channel is defined by one side of the plurality of connecting plates facing the central point of the air inlet hole; A portion of the peripheral air flow channel is defined between two adjacent cantilevers, a surface of the connecting plate facing away from the center point of the air inlet hole, and a portion of the inner surface of the air inlet hole.

11. The heater according to claim 10, characterized in that The cross section of the air inlet hole is circular, and the length of the side of the connecting plate facing away from the center point of the air inlet hole in the circumferential direction is 0 to 2πr / N. The distance between the side of the connecting plate facing away from the center point of the air inlet and a part of the inner surface of the air inlet is less than or equal to r; Wherein, r is the radius of the air inlet hole, and N is the number of the connecting plates.

12. The heater according to any one of claims 1 to 11, characterized in that: The heating element comprises: A base body, the chamber is formed inside; an infrared electrothermal coating formed on the substrate; the infrared electrothermal coating is used to receive the electric power to generate heat and then generate infrared rays, and transmit the energy of the infrared rays to at least part of the smoking article received in the chamber in at least a radiation manner; The electrode portion at least comprises a first electrode and a second electrode which are arranged at intervals on the infrared electrothermal coating, wherein the first electrode and the second electrode are both electrically connected to the infrared electrothermal coating and are used to feed the electric power to the infrared electrothermal coating.

13. The heater according to any one of claims 1 to 11, characterized in that: The heating element comprises: A base body, the chamber is formed inside; an infrared radiation layer formed on the substrate; An electric heating unit is arranged on the infrared radiation layer; Among them, the electric heating part is used to receive the electric power to generate heat and transfer the generated heat to the infrared radiation layer; the infrared radiation layer is used to receive the heat transferred by the electric heating part to increase the temperature and then generate infrared rays, and transfer the energy of the infrared rays to at least part of the smoking article received in the chamber in a radiation manner.

14. A smoking article, characterized in that: The smoking device comprises a shell assembly and a heater according to any one of claims 1 to 13; the heater is arranged in the shell assembly.

15. The smoking article according to claim 14, characterized in that: The smoking device also includes a heat-insulating tube in a hollow shape; The heat insulation tube is arranged at the periphery of the heater to prevent at least part of the heat from being conducted from the heater to the shell assembly.

16. The smoking article according to claim 15, characterized in that: The smoking device further comprises a second fixing seat, and the second fixing seat is used for fixing the other end of the heating element.

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