Aerosol-generating device and heater for aerosol-generating device

Abstract

Provided in the present application are an aerosol-generating device and a heater for an aerosol-generating device. The aerosol-generating device is configured to receive an aerosol-generating product and heat same to generate an aerosol. The aerosol-generating device comprises at least one heater, which is configured to heat at least part of the aerosol-generating product received in the aerosol-generating device, wherein the at least one heater is configured to emit laser to heat the at least part of the aerosol-generating product. In the aerosol-generating device, by means of the at least one heater emitting laser to the aerosol-generating product, the aerosol-generating product is heated.

Description

Aerosol-generating device and heater for an aerosol-generating device

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 202410718040.3, filed on June 04, 2024, and entitled “Aerosol-generating device and heater for an aerosol-generating device”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol-generating device and a heater for an aerosol-generating device. BACKGROUND

[0004] Tobacco products, such as cigarettes, cigars, and the like, burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these burning tobacco products by creating products that release compounds without burning.

[0005] Examples of such products are aerosol-generating devices that release compounds by heating, rather than burning, a material. For example, the material can be tobacco or other non-tobacco products, which can or can not contain nicotine. US5479948A proposes an aerosol-generating device that progressively drives portions or locations of a tape-like aerosol-generating substrate onto a heater for heating by driving the tape-like aerosol-generating substrate; such an aerosol-generating device heats by driving the tape-like aerosol-generating substrate to allow an accurate and consistent amount of aerosol delivery to a consumer in each puff.

[0006] SUMMARY

[0007] The present application provides an aerosol-generating device configured to receive an aerosol-generating article and to heat to generate an aerosol; comprising:

[0008] at least one or more heaters for heating at least a portion of the aerosol-generating article received within the aerosol-generating device; the at least one heater being configured to heat the at least a portion of the aerosol-generating article by emitting a laser.

[0009] In some embodiments, the at least one heater is configured to heat the at least a portion of the aerosol-generating article by emitting a laser having a wavelength of 760nm-1310nm.

[0010] In some embodiments, the at least one heater is configured to have a substantially sheet-like shape.

[0011] The at least one heater is configured to emit laser light in a direction perpendicular to the heater.

[0012] In some embodiments, the at least one heater is configured to have a length or width of 5mm-15mm; and / or, the at least one heater is configured to have a thickness of 1mm-4mm.

[0013] In some embodiments, the at least one heater emits laser light with a spot having a diameter of 2.5mm-8mm.

[0014] In some embodiments, the at least one heater emits laser light with a spot having a radial light intensity distribution approximately in the shape of M;

[0015] Alternatively, the at least one heater emits laser light with a spot including: a central region, and a peripheral region between the central region and an outermost edge of the spot; the central region has a light intensity less than that of the peripheral region, and greater than that of the outermost edge of the spot.

[0016] In some embodiments, the at least one heater includes a plurality of laser emitters arranged non-linearly;

[0017] and / or, the at least one heater includes at least three laser emitters arranged in an array.

[0018] In some embodiments, further comprising:

[0019] a circuit board arranged with a circuit; the circuit is configured to control the at least one heater to emit laser light for heating for less than a maximum predetermined time length in each heating.

[0020] In some embodiments, further comprising:

[0021] a circuit board arranged with a circuit;

[0022] the circuit is configured to allow the at least one heater to initiate heating only when a time length from a previous heating is greater than a minimum predetermined time length; and / or, the circuit is configured to prevent the at least one heater from initiating heating when the time length from the previous heating is less than the minimum predetermined time length.

[0023] In some embodiments, further comprising:

[0024] a circuit board arranged with a circuit;

[0025] the at least one heater includes a laser emitter for emitting laser light;

[0026] the circuit is configured to allow the at least one heater to initiate heating only when the laser emitter is cooled to below a predetermined temperature.

[0027] In some embodiments, the heater comprises a plurality of laser emitters arranged at intervals.

[0028] The plurality of laser emitters are configured to be capable of working simultaneously only; or, any one of the plurality of laser emitters is incapable of working individually.

[0029] In some embodiments, the heater comprises at least one planar laser emitter.

[0030] In some embodiments, the heater comprises:

[0031] An outer body defining an outer surface of the heater; the outer body has a sealed cavity defined therein;

[0032] At least one or more laser emitters located within the cavity for emitting laser light;

[0033] The outer body is only partially laser-transmissive, such that the laser light emitted by the laser emitters passes through the outer body to the outside of the heater.

[0034] In some embodiments, the outer body comprises:

[0035] A support layer having first and second opposite sides;

[0036] A substantially annular fence arranged on the first side of the support layer and at least partially surrounding or defining the cavity;

[0037] A laser-transmissive light-transmissive cover enclosing or sealing the cavity; the laser light emitted by the laser emitters passes through the light-transmissive cover to the outside of the heater.

[0038] In some embodiments, the at least one or more laser emitters are integrated on the support layer and are supported by the support layer;

[0039] And / or, the support layer is not laser-transmissive;

[0040] And / or, the support layer has a thermal conductivity greater than 80 W / (m·K);

[0041] And / or, the support layer has a thickness of 0.3 mm to 1.5 mm;

[0042] And / or, the support layer comprises aluminum nitride ceramic.

[0043] In some embodiments, the light-transmissive cover is planar; or, the light-transmissive cover is at least partially curved.

[0044] In some embodiments, the fence has a thermal conductivity greater than 200 W / (m·K);

[0045] And / or, the fence is made of a metal or alloy material, such that the inner surface of the fence is reflective.

[0046] and / or the fence is non-contact with the at least one or more laser emitters;

[0047] In some embodiments, the at least one or more laser emitters are vertical cavity surface emitting lasers;

[0048] and / or the at least one or more laser emitters are semiconductor lasers.

[0049] In some embodiments, the laser emitters have a first electrode layer and a second electrode layer;

[0050] The heater further comprises:

[0051] first and second electrical connection areas arranged on the surface of the second side of the support layer at intervals; the first electrical connection area is electrically connected with the first electrode layer of the laser emitters, and the second electrical connection area is electrically connected with the second electrode layer of the laser emitters, so as to supply power to the laser emitters through the first and second electrical connection areas in use.

[0052] In some embodiments, the heater further comprises:

[0053] at least one first indication mark for providing an indication associated with the electrode polarity of the first and second electrical connection areas.

[0054] In some embodiments, the heater further comprises:

[0055] a base supporting or holding the heater.

[0056] In some embodiments, the base is in planar contact or bonded with the heater;

[0057] and / or the base is in contact and thermally conductive with the heater for facilitating heat dissipation of the heater;

[0058] and / or the base has a thermal conductivity greater than 100 W / (m·K);

[0059] and / or the heater and the base are configured to have a substantially sheet-like shape, and the area of the base is at least 5 times the area of the heater;

[0060] and / or the base is provided with at least one or more notches or holes through which the aerosol generating device holds or fixes the base.

[0061] In some embodiments, the heater is provided with electrical connection areas, and the base is provided with electrode areas electrically connected with the electrical connection areas;

[0062] a circuit board operatively electrically connected with the electrode areas of the base, so as to supply power to the heater.

[0063] In some embodiments, the part of the surface of the electrode region is covered by the insulating layer, and has a first contact portion and a second contact portion not covered by the insulating layer; the first contact portion and the second contact portion are spaced apart;

[0064] The electrical connection region of the heater is electrically connected to the first contact portion, and the circuit board is electrically connected to the second contact portion.

[0065] In some embodiments, the electrode region comprises a first electrode region and a second electrode region;

[0066] The base is further provided with:

[0067] At least one second indication mark for providing an indication associated with the electrode polarity of the first electrode region and the second electrode region.

[0068] In some embodiments, the application further comprises:

[0069] An electric core;

[0070] A circuit board provided with a circuit and configured to control the electric core to supply power to the heater;

[0071] The heater is fixedly mounted on or arranged on the circuit board, or the heater is separate from the circuit board.

[0072] The application further provides a heater for an aerosol generating device, comprising:

[0073] A support layer having a first side and a second side opposite to each other;

[0074] A substantially annular fence arranged on the first side of the support layer and at least partially surrounding or defining a cavity;

[0075] At least one or more laser emitters located in the cavity for emitting laser light;

[0076] A light-transmissive cover combined with the fence and enclosing or sealing the cavity.

[0077] The application further provides a heater for an aerosol generating device, comprising:

[0078] An outer body defining an outer surface of the heater; the outer body has a sealed cavity defined therein;

[0079] At least one or more laser emitters located in the cavity for emitting laser light;

[0080] The outer body is only partially transmissive to laser light, so that the laser light emitted by the laser emitters passes through the outer body in a direction perpendicular to the heater to the outside of the heater.

[0081] The above aerosol generating device emits laser to the aerosol generating article through at least one heater, and then heats the aerosol generating article. BRIEF DESCRIPTION OF DRAWINGS

[0082] One or more embodiments are illustrated by way of example in the figures that form a part of this detailed description, illustrating but not limiting the embodiments, wherein like reference numbers refer to like elements in which: the figures in the drawings do not limit the proportion.

[0083] Fig. 1 is a schematic view of an aerosol generating system according to an embodiment;

[0084] Fig. 2 is a schematic view of a heater according to an embodiment, viewed from one perspective;

[0085] Fig. 3 is a schematic view of the heater of Fig. 2, viewed from another perspective;

[0086] Fig. 4 is a schematic view of a cross-section of the heater of Fig. 2, viewed from one perspective;

[0087] Fig. 5 is a schematic view of a surface topography of a laser emitter according to an embodiment;

[0088] Fig. 6 is a schematic view of a cross-section of the laser emitter of Fig. 2, viewed from one perspective;

[0089] Fig. 7 is a schematic view of a susceptor for supporting or holding a heater according to an embodiment;

[0090] Fig. 8 is a schematic view of a laser spot emitted by a heater according to an embodiment;

[0091] Fig. 9 is a schematic view of a radial intensity profile of the laser spot of Fig. 8;

[0092] Fig. 10 is a schematic view of a substrate portion heated by a laser of a heater according to an embodiment;

[0093] Fig. 11 is a schematic view of an aerosol generating system according to another embodiment. DETAILED DESCRIPTION

[0094] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments.

[0095] An aerosol generating system according to an embodiment generates an aerosol by heating rather than by combustion. As shown in Fig. 1, the aerosol generating system includes:

[0096] An aerosol generating article 100, such as a tobacco or non-tobacco article, and an aerosol generating device 300 that volatilizes or releases at least one component of the aerosol generating article 100 by heating to form an aerosol for smoking.

[0097] In an alternative embodiment, the aerosol generating article 100 preferably employs a tobacco-containing material that releases volatile compounds from a substrate upon heating; or can also be a non-tobacco material that is suitable for electrically heated smoking after being heated. The aerosol generating article 100 preferably employs a solid substrate that can include one or more of a powder, a granule, a fragment, a fine strip, a strip, or a sheet of one or more of a vanilla leaf, a dried flower, a volatile flavoring herb, a tobacco leaf, a homogenized tobacco, an expanded tobacco; or, the solid substrate can contain additional tobacco or non-tobacco volatile flavoring compounds to be released upon heating of the substrate.

[0098] FIG. 1 shows a schematic view of an aerosol generating system according to an embodiment; according to FIG. 1, the aerosol generating system includes:

[0099] an aerosol generating article 100;

[0100] an aerosol generating device 300 for receiving the aerosol generating article 100 and heating the aerosol generating article 100 to generate an aerosol for a user to inhale.

[0101] According to FIG. 1, the aerosol generating device 300 includes:

[0102] a rechargeable battery 310 for power supply;

[0103] a circuit board 320, such as a PCB board or an FPC board, arranged with a circuit;

[0104] a receiving cavity 340; in use, the aerosol generating article 100 can be removably received in the receiving cavity 340 through an opening on a surface of the aerosol generating device 300, as indicated by an arrow P1 in FIG. 1;

[0105] a heating mechanism 330 surrounding or bounding or adjacent to the receiving cavity 340 for heating at least a portion of the aerosol generating article 100 received in the receiving cavity 340 to generate an aerosol;

[0106] a mouthpiece 350 in fluid communication with the receiving cavity 340 for a user to inhale the aerosol generated by the aerosol generating article 100 through the mouthpiece 350.

[0107] In FIG. 1, the heating mechanism 330 includes a plurality or a number of heaters 30; and the number of heaters 30 can be arranged on a same side of the receiving cavity 340; and when the aerosol generating article 100 is received in the receiving cavity 340, the number of heaters 30 are all facing or adjacent to the aerosol generating article 100.

[0108] According to the embodiment shown in FIG. 1, the number or plurality of heaters 30 are discretely arranged; for example, in FIG. 1 they are arranged in an array. Accordingly, the upper portion of the aerosol-generating article 100 includes a number or plurality of substrate portions 121 that can be heated to generate aerosol; when the aerosol-generating article 100 is received in the receiving cavity 340, the substrate portions 121 can be heated by the corresponding heaters 30 to individually generate aerosol. For example, in FIG. 1, the consecutively arranged substrate portions 121 can be approximately rectangular in shape.

[0109] In some embodiments, the number or plurality of heaters 30 are arranged to be independently connectable to the circuit board 320, and in turn, to be independently powered by the circuit board 320 to independently heat. For example, in some embodiments, the number or plurality of heaters 30 are individually activatable; such that each heater 30 is capable of heating only the corresponding substrate portion 121 individually.

[0110] In some embodiments, the circuit board 320 is configured to control the number or plurality of heaters 30 to heat in a predetermined order, one after another sequentially. In some embodiments, the circuit board 320 is configured to control the number or plurality of heaters 30 to not heat simultaneously; such that, for example, the circuit board 320 only controls one heater 30 to heat to generate aerosol to satisfy one puff when a user puffs.

[0111] In some embodiments, in each puff, the circuit board 320 controls the number of heaters 30 to independently heat the substrate portions of the aerosol-generating article 100 to generate a total particulate matter (TPM) of at least 1.5 mg, at least 1.7 mg, at least 2.0 mg, at least 2.5 mg, at least 3.0 mg, about 1.0 mg to about 5.0 mg, about 1.5 mg to about 4.0 mg, about 2.0 mg to about 4.0 mg, or about 2.0 mg to about 3.0 mg, at least 3 mg to about 7 mg, about 4 mg to about 8 mg, and about 5 mg to about 10 mg.

[0112] In some embodiments, the circuit board 320 controls the predetermined sequence of the several heaters 30 to be activated one after another in sequence. Specifically, for example: at the first puff of the user, the circuit board 320 provides power to the first heater 30 closest to the left side for heating, generating aerosol for one puff; at the next puff of the user, the circuit board 320 provides power to the second heater 30 closest to the left side for heating, generating aerosol for one puff; and so on, until all the heaters 30 are heated, the substrate portion 121 of the aerosol generating article 100 is completed, prompting the user to replace the new aerosol generating article 100. In the above embodiments, the sequential and separate activation of the heaters 30 rather than simultaneous activation means that the aerosol generating substrate is minimally consumed and energy is wasted. Alternatively, in yet other embodiments, the sequence of the sequential and separate activation of the several heaters 30 in the predetermined sequence is performed along the array arrangement direction.

[0113] Alternatively, in yet other variant embodiments, the circuit board 320 controls the sequential and separate activation of the several heaters 30 to be performed without intervals along the arrangement direction of the heaters 30. Alternatively, in yet other variant embodiments, the circuit board 320 controls the sequential and separate activation of the several heaters 30 to be performed with intervals or jumps.

[0114] For example, in some embodiments, the several or multiple heaters 30 can be sequentially powered, i.e., powered once for each user puff, so as to consistently generate aerosol based on each puff. Accordingly, in some embodiments, each user puff action can be sensed by an airflow sensor such as a microphone or a MEMS sensor, etc.; the circuit board 320 sequentially powers the several or multiple heaters 30 based on the sensing result of the airflow sensor. In preferred embodiments, the circuit board 320 controls the sequential activation of the several heaters 30 in the predetermined sequence based on the user's puff action. And in yet other variant embodiments, the circuit board 320 controls the sequential activation of the several heaters 30 in the predetermined sequence at predetermined intervals; for example, the predetermined interval is between about 30 seconds and 300 seconds.

[0115] For example, in yet other embodiments, the circuit board 320 controls the sequential activation of the several heaters 30 in the predetermined sequence based on the operation input signal on the above aerosol generating device 300. For example, the aerosol generating device 300 is provided with an input element, which can include a switch button, a touch operation screen, a knob, etc., and can be operated by the user to generate an input signal; the circuit board 320 controls the sequential activation of the several heaters 30 in the predetermined sequence based on the operation input signal formed by the user operating the input element.

[0116] In some embodiments, the circuit board 320 controls the heaters 30 to be sequentially activated in a predetermined order based on the removal or replacement of the aerosol generating article 100. Specifically, in some embodiments, when the circuit board 320 controls the above heaters 30 to be sequentially activated to be completed, the user is prompted that the aerosol generating article 100 has been consumed, and the user is prompted to replace a new aerosol generating article 100.

[0117] In some embodiments, when a new aerosol generating article 100 is detected to be received in the receiving cavity 340 of the aerosol generating device 300, the heaters 30 are sequentially activated again in the predetermined order. The detection of the replacement of the new aerosol generating article 100 by the user can be detected by a sensor; for example, a light sensor or a pressure sensor is provided in the aerosol generating device to sense the combination or removal of the aerosol generating article 100 in the receiving cavity 340, and to determine the replacement or consumption of the aerosol generating article 100 by the user according to the combination and removal.

[0118] In some embodiments, the circuit board 320 controls the above heaters 30 to be sequentially activated in a cycle. For example, in some embodiments, the cycle is repeated a predetermined number of times; for example, 10 times. Specifically, when the number of times the heaters 30 are activated, and / or the number of times the user puffs, and / or the number of times the input signal input by the input element is input reaches a predetermined number, a new cycle of controlling the heaters 30 to be sequentially activated is entered. For another example, in some embodiments, the cycle is repeated according to the removal or replacement of the aerosol generating article 100.

[0119] In some embodiments, the circuit board 320 controls the heaters 30 to be heated in the same heating curve or heating temperature. For example, in some specific embodiments, the circuit board 320 controls the heaters 30 to be heated at a temperature of 300°C.

[0120] Alternatively, in some other embodiments, the circuit board 320 controls the heaters 30 to be heated in different heating curves or heating temperatures. For example, in some embodiments, the circuit board 320 controls the heating temperature of the heaters 30 to be increased or decreased in turn along the heating activation order.

[0121] For example, in some embodiments, the circuit board 220 is configured to sequentially activate the plurality of heaters 30 such that no two spatially adjacent heaters 30 are activated consecutively. Advantageously, this can minimize the preheating of the heaters 30, which can reduce the likelihood of thermal decomposition of adjacent substrate portions 121.

[0122] In some embodiments, the heater 30 is a laser heater; for example, the heater 30 heats the aerosol generating article 100 by emitting infrared laser light. Or in some further embodiments, the plurality or plurality of heaters 30 can be heated by any suitable method. For example, at least one or all of the plurality or plurality of heaters 30 can comprise an infrared heater, or an inductive heating magnetic field generator, or an electric resistance heater, or a combination thereof.

[0123] In some embodiments, the heater 30 is configured to emit laser light in the near-infrared waveband, thereby heating the aerosol generating article 100. In some embodiments, the heater 30 is configured to emit laser light having a wavelength of 760 nm to 1310 nm, thereby heating the aerosol generating article 100. Or more preferably, the heater 30 is configured to emit laser light having a wavelength of 850 nm to 980 nm.

[0124] In some embodiments, the heater 30 is arranged in a substantially plate-like shape; the heater 30 is configured to be plate-like, which can be characterized by the length and / or width of the heater 30 being greater than its thickness; or, the length and / or width of the heater 30 being greater than 2 times its thickness. For example, in some specific embodiments, the heater 30 is configured to have a length of about 5 mm to 15 mm; the heater 30 is configured to have a width of about 5 mm to 15 mm; the heater 30 is configured to have a thickness of about 1 mm to 4 mm.

[0125] In some embodiments, the plate-like heater 30 is configured to emit laser light in a direction perpendicular to the heater 30. In some specific embodiments, the plate-like heater 30 emits laser light having a spot diameter of 2.5 mm to 8 mm. In some specific embodiments, the plate-like heater 30 emits laser light having a spot diameter of 3.5 mm to 6 mm.

[0126] FIGS. 2 to 4 show schematic diagrams of the structure of the heater 30 of an embodiment; FIG. 2 is a schematic diagram of a top view of the heater 30, and FIG. 3 is a schematic diagram of a bottom view of the heater 30. In this embodiment, the heater 30 comprises:

[0127] an outer body defining an outer surface of the heater 30; the outer body has a cavity 312 formed or defined therein; at least one or more laser emitters are arranged in the cavity 312. The outer body is only partially transparent, specifically laser-transparent, so that the laser light emitted by the laser emitters is emitted only through the transparent portion. Specifically, the heater 30 comprises:

[0128] The electrically insulating support layer 32 is configured to be in a sheet shape; the support layer 32 is made of an electrically insulating rigid material, for example, made of a polymer plastic or a ceramic material capable of withstanding a temperature of at least 250°C; the support layer 32 has a first side and a second side opposite to each other along a thickness direction;

[0129] The substantially annular fence 31 is arranged on the first side of the support layer 32 and surrounds or defines a sealed cavity 312 on the first side of the support layer 32; the fence 31 is arranged with a step 311 thereon;

[0130] The light-transmissive cover 313 is coupled to the fence 31 and seals the cavity 312; in particular, the light-transmissive cover 313 is fitted against the step 311 of the fence 31 and seals the cavity 312;

[0131] The at least one laser emitter, for example, the laser emitter 361, the laser emitter 362, the laser emitter 363, and the laser emitter 364, is packaged in the cavity 312 for emitting laser light.

[0132] In this embodiment, the external body of the heater 30 is defined by the support layer 32, the fence 31, and the light-transmissive cover 313 together.

[0133] In some embodiments, the support layer 32 is light-tight. In some embodiments, the support layer 32 has a thermal conductivity greater than 30 W / (m·K); in some embodiments, the support layer 32 has a thermal conductivity greater than 80 W / (m·K). In some alternative embodiments, the support layer 32 has a thermal conductivity between 130 W / (m·K) and 400 W / (m·K). In some specific embodiments, the support layer 32 has a thermal conductivity between 170 W / (m·K) and 320 W / (m·K). In some embodiments, the support layer 32 comprises or is an aluminum nitride ceramic capable of having the above thermal conductivity. In some embodiments, the support layer 32 has a thickness of 0.3 mm to 1.5 mm.

[0134] In some embodiments, the cavity 312 has a vacuum degree. For example, in some specific embodiments, the pressure in the cavity 312 is less than 0.85 atm.

[0135] In some embodiments, the light-transmissive cover 313 can be made of a high-temperature-resistant and light-transmissive material such as quartz, glass, ceramic, or mica; preferably, the light-transmissive cover 313 is transparent. For example, the light-transmissive cover 313 made of quartz has a transmittance of laser light emitted by the laser emitter of more than 90%; in more preferred embodiments, the light-transmissive cover 313 made of high-purity quartz has a transmittance of laser light emitted by the laser emitter of more than 95%. The light-transmissive cover 313 is transparent.

[0136] In the embodiments shown in FIGS. 2-4, the light-transmissive cover 313 is planar; or the light-transmissive cover 313 is sheet-like. In some embodiments, the light-transmissive cover 313 is curved in an arc shape, which is advantageous for expanding or converging the laser spot. For example, in some embodiments, the light-transmissive cover 313 is curved in an arc shape in a direction away from the laser emitter / cavity 312, such that the surface of the light-transmissive cover 313 facing away from the laser emitter / cavity 312 is convex. Or in yet other embodiments, the light-transmissive cover 313 is curved in an arc shape in a direction toward the laser emitter / cavity 312, such that the surface of the light-transmissive cover 313 facing away from the laser emitter / cavity 312 is concave.

[0137] In some embodiments, the fence 31 is rigid. In some embodiments, the fence 31 has a thermal conductivity greater than 200 W / (m-K). In some embodiments, the fence 31 is made of a metal or an alloy, which is advantageous for being opaque while providing a reflective surface on the inner surface of the fence 31. In some specific embodiments, the fence 31 comprises a metal or an alloy containing gold, silver, copper, aluminum, etc. In some specific embodiments, the fence 31 made of copper has a thermal conductivity of about 400 W / (m-K).

[0138] In the embodiments shown in FIGS. 2-4, the heater 30 comprises four laser emitters, i.e., the laser emitter 361, the laser emitter 362, the laser emitter 363, and the laser emitter 364, arranged in an array. By the arrangement in an array, the light intensity in the central region surrounded by the laser beams emitted by the four laser emitters is relatively small, which eventually forms the laser spot shown in FIGS. 8 and 9. In some embodiments, the plurality of laser emitters are arranged non-linearly or sequentially to avoid forming a linear laser spot when they are working simultaneously. In some embodiments, the plurality of laser emitters are arranged to work simultaneously only, but not individually.

[0139] For example, in FIG. 8, a schematic diagram of the laser spot emitted by the heater 30 with the above-mentioned four laser emitters arranged in an array is shown; the light intensity in the central region is smaller than that in the peripheral region surrounding the central region. More specifically, the light intensity distribution of the laser spot emitted by the heater 30 in the radial direction is shown in FIG. 9, which is approximately M-shaped, rather than the usual Gaussian-distributed laser spot. The light intensity of the outermost edge of the laser spot in FIG. 9 is the lowest, lower than that in the central region. The usual Gaussian-distributed laser spot has the maximum light intensity in the central region, which gradually decreases radially outward.

[0140] During heating, the portion of the outermost edge of the laser has relatively small energy, which can maximize the prevention of heat diffusion from the substrate portion 121 heated by the laser irradiation to the adjacent other substrate portions 121, thereby facilitating the heating of each substrate portion 121 suitable for generating aerosol for one puff in each heating. For example, as shown in FIG. 10, a schematic diagram of the surface charring effect of a substrate portion 121 of the aerosol generating article 100 heated by the heater 30 with the above M-shaped light spot in an embodiment; as can be seen from FIG. 10, the portion of the outermost edge is substantially not charred; the degree of pyrolytic charring in the central region is less than that in the peripheral region.

[0141] Alternatively, in still other variant embodiments, the laser emitter of the heater 30 is at least three; the three laser emitters can be arranged in a triangular or triangular array to generate a laser spot with an approximately M-shaped light intensity distribution as in FIG. 9. When the heater 30 has a larger number of laser emitters, they can be arranged in an array.

[0142] Alternatively, in still other variant embodiments, each of the plurality of laser emitters is independently operably electrically connected to the circuit board 320; then in embodiments, each or at least one of the plurality of laser emitters can be independently activated to work.

[0143] In some embodiments, the at least one or more laser emitters are substantially planar. For example, in some embodiments, the at least one or more laser emitters have a length and / or width of about 1 mm to 4 mm, and a thickness of less than 1 mm.

[0144] In some embodiments, the at least one or more laser emitters are vertical cavity surface emitting lasers (VCSEL). As shown in FIG. 5, the laser emitter 361 is arranged with a plurality of light-emitting holes 360 for emitting laser light towards the surface of the light-transmitting cover 313; thereby causing the laser light to be emitted in the direction of the light-transmitting cover 313. The plurality of light-emitting holes 360 are arranged in an array. In some embodiments, the aperture of the light-emitting hole 360 is less than 3 μm.

[0145] In some embodiments, the at least one or more laser emitters are semiconductor lasers; semiconductor lasers are lasers that use semiconductor materials as working substances, and a large number of electrons and holes are generated by injecting carriers into a semiconductor PN junction, and then form stimulated radiation. Alternatively, the at least one or more laser emitters are semiconductor laser chips. In still other variant embodiments, the at least one or more laser emitters are laser diodes, helium-neon lasers, etc.

[0146] For example, FIG. 6 shows a schematic diagram of a partially cross-sectional view of a laser emitter 361 in one embodiment; in this embodiment, the laser emitter 361 includes a plurality of semiconductor thin films formed on a substrate 3611 in sequence by epitaxy processes. Epitaxy is a term in the field of chip manufacturing, which refers to a process of growing a semiconductor thin film with a complete and orderly arrangement on a substrate.

[0147] In particular, the laser emitter 361 includes:

[0148] a substrate 3611 that is electrically insulating and rigid, such as a gallium arsenide (GaAs) substrate;

[0149] an N electrode 3612, a plurality of N-type semiconductor layers 3613, a plurality of active layers 3614, a plurality of P-type semiconductor layers 3615, and a P electrode 3616 formed on the substrate 3611 in sequence.

[0150] In use, in the semiconductor laser emitter 361 with the above configuration, when a forward voltage is applied through the P electrode 3616, holes of the P-type semiconductor layers 3615 diffuse into the active layers 3614, and electrons of the N-type semiconductor layers 3613 diffuse into the active layers 3614. The electrons and holes that enter the active layers 3614 are confined in the active layers 3614 due to the action of the heterojunction barrier, forming a population inversion distribution. When the electrons in the population inversion distribution in the active layers 3614 recombine with holes by transition, spontaneous emission light is generated. At the same time, the spontaneous emission light is reciprocally reflected and resonantly amplified by the plurality of N-type semiconductor layers 3613 and the plurality of P-type semiconductor layers 3615 on both sides of the active layers 3614, eventually forming stimulated emission amplified light, i.e., laser light, which is emitted from the light emitting hole 360, as shown by the arrow R11 in FIG. 6.

[0151] In some embodiments, the P-type semiconductor layers 3615 and / or the N-type semiconductor layers 3613 are composite layers. The plurality of P-type semiconductor layers 3615 and / or the plurality of N-type semiconductor layers 3613 are typically composed of 20-40 pairs of thin films of semiconductor materials, which in use provide a distributed Bragg reflector (DBR) on both sides of the active layers 3614, respectively. Alternatively, the plurality of P-type semiconductor layers 3615 is referred to as a P-DBR, and the plurality of N-type semiconductor layers 3613 is referred to as an N-DBR. For example, in some embodiments, the P-type semiconductor layers 3615 include alternating P-type doped low refractive index layers and high refractive index layers, such as alternating P-type doped GaAs layers and AlGaAs layers. For example, in some embodiments, the N-type semiconductor layers 3613 include alternating N-type doped high refractive index layers and low refractive index layers, such as alternating N-type doped GaAs layers and AlGaAs layers.

[0152] In some embodiments, the P electrode 3616 and / or the N electrode 3612 comprises gold, silver, copper or alloys thereof. For example, in some specific embodiments, the P electrode 3616 and / or the N electrode 3612 is gold. The thickness of the P electrode 3616 and / or the N electrode 3612 is about 1 μm to 10 μm.

[0153] According to FIG. 2 to FIG. 4, to facilitate the heater 30 to control the operation of multiple laser emitters simultaneously; the heater 30 further comprises:

[0154] The first conductive region 331, the second conductive region 332 and the third conductive region 333 are formed on the first side surface of the support layer 32.

[0155] In some embodiments, the first conductive region 331, the second conductive region 332 and the third conductive region 333 are formed or defined by a coating of conductive material sprayed or deposited or coated on the first side surface of the support layer 32. In some embodiments, the conductive material forming the first conductive region 331, the second conductive region 332 and the third conductive region 333 is gold, silver or copper, etc., and the thickness is about 9 μm.

[0156] In some embodiments, the first conductive region 331, the second conductive region 332 and the third conductive region 333 are located within the cavity 312; and the first conductive region 331, the second conductive region 332 and the third conductive region 333 are all non-contact or non-connected with the fence 31.

[0157] In some embodiments, the first conductive region 331, the second conductive region 332 and the third conductive region 333 are spaced apart from each other; for example, the first conductive region 331, the second conductive region 332 and the third conductive region 333 are arranged in sequence and spaced apart along the length or width direction of the heater 30. The first conductive region 331 and the second conductive region 332 are separated by a separation distance 341; and the second conductive region 332 and the third conductive region 333 are separated by a separation distance 342.

[0158] In an embodiment, the first conductive region 331 and the second conductive region 332 are conductively connected by a soldering wire 351; the laser emitter 361 and the laser emitter 362 are arranged in the first conductive region 331 in an interval manner, and the N electrode 3612 of the laser emitter 361 and the N electrode of the laser emitter 362 are conductively connected with the first conductive region 331 in the package; the laser emitter 363 and the laser emitter 364 are arranged in the second conductive region 332 in an interval manner, and the N electrode of the laser emitter 363 and the N electrode of the laser emitter 364 are conductively connected with the second conductive region 332 in the package; and then the P electrode 3612 of the laser emitter 361 is conductively connected to the third conductive region 333 through a soldering wire 352, the P electrode of the laser emitter 362 is conductively connected to the third conductive region 333 through a soldering wire 353, the P electrode of the laser emitter 363 is conductively connected to the third conductive region 333 through a soldering wire 354, and the P electrode of the laser emitter 364 is conductively connected to the third conductive region 333 through a soldering wire 355. In an embodiment, the laser emitter 361, the laser emitter 362, the laser emitter 363 and the laser emitter 364 are connected in a mixed connection mode of being connected in series and then connected in parallel. In use, through the mixed connection arrangement of being connected in series and then connected in parallel, the heater 30 with four laser emitters can emit a laser spot of a suitable size to heat a sufficient area of the substrate portion 121 to generate aerosol for smoking, and on the other hand, the overall equivalent impedance of the heater 30 is kept in a suitable range, so that when the output voltage of 3.7V of the battery 310 is provided to the heater 30, the heater 30 has a working power greater than 5W. For example, in a specific embodiment, when the output voltage of 3.7V of the battery 310 is provided to the heater 30, the current flowing through the heater 30 is 2.0A, and the working power of the heater 30 is about 8.5W, which is beneficial to the working efficiency of the heater 30 to meet the required heating.

[0159] In still other variant embodiments, the plurality of laser emitters, such as the laser emitter 361, the laser emitter 362, the laser emitter 363 and the laser emitter 364, are all arranged in series or in parallel, and then in operation, they are all operated at the same time in series or in parallel.

[0160] Alternatively, in still other variant embodiments, the heater 30 comprises:

[0161] a first conductive region and a second conductive region formed on the first side surface of the support layer 32; the first conductive region and the second conductive region are arranged spaced apart; at least one or more laser emitters are arranged on the first conductive region, and an N electrode of the at least one or more laser emitters is conductively connected to the first conductive region, and a P electrode of the at least one or more laser emitters is electrically connected to the second conductive region by a soldering wire or the like; and then in use, the at least one or more laser emitters are powered by the first conductive region and the second conductive region. Or in this embodiment, the first side surface of the support layer 32 only includes the first conductive region and the second conductive region arranged spaced apart.

[0162] In some embodiments, the circuit board 320 is configured to control the heater 30 to emit laser to heat the aerosol generating article 100 for less than 10 seconds in each heating. Or, the circuit board 320 is configured to control the heater 30 to emit laser to heat the aerosol generating article 100 for less than a maximum predetermined time length, to prevent excessive heating from forming excessive carbonization. For example, in some optional embodiments, the circuit board 320 is configured to control the heater 30 to emit laser to heat the aerosol generating article 100 for a time length of 3s in each heating.

[0163] In some embodiments, when a time length from a previous heating is less than a minimum predetermined time length, the circuit board 320 is configured to prevent the heater 30 from emitting laser to heat the aerosol generating article 100; or, the circuit board 320 is configured to allow the heater 30 to emit laser to heat the aerosol generating article 100 only when a time length from a previous heating is greater than the minimum predetermined time length. For example, when a time length from a previous heating by the heater 30 is less than a minimum predetermined time length, for example, 5s, the heater 30 is prevented from starting heating; to prevent the heater 30 from heating the semiconductor-based VCSEL laser emitter and the like inside which is easily burnt out without sufficient heat dissipation. Or, the circuit board 320 is configured to allow the heater 30 to start heating only when accumulated heat or temperature on the heater 30 is dissipated to be lower than a predetermined temperature. More specifically, the heater 30 is allowed to start heating when accumulated heat or temperature on the laser emitter inside the heater 30 is dissipated to be lower than a predetermined temperature. In some embodiments, the predetermined temperature can be 200℃, or 150℃, or 100℃, or 85℃, or lower.

[0164] According to FIGS. 2 to 4, to facilitate connection of the heater 30 to the circuit board 320, and then power supply to the heater 30, the heater 30 further includes:

[0165] first and second electric connection regions 371, 372 are defined by a layer of electrically conductive material formed on the second side surface of the support layer 32; the material of the first and second electric connection regions 371, 372 is, for example, gold, silver, copper or alloys thereof. The thickness of the first and second electric connection regions 371, 372 is approximately between 0.05 mm and 0.5 mm.

[0166] In embodiments, the first electric connection region 371 is electrically connected to the third electrically conductive region 333 by means of an electrically conductive material 357 that penetrates the support layer 32, and the second electric connection region 372 is electrically connected to the first electrically conductive region 331 by means of an electrically conductive material 358 that penetrates the support layer 32. In use, then, by connecting the first electric connection region 371 to the circuit board 320 and operatively connecting the positive pole of the electric cell 310, and by connecting the second electric connection region 372 to the circuit board 320 and operatively connecting the negative pole of the electric cell 310, the laser emitters 361, 362, 363 and 364 are simultaneously supplied with voltage from the electric cell 310 as a laser pumping source, so that they simultaneously work to generate laser light.

[0167] In yet other embodiments, the first electric connection region 371 connected to the P electrode and the second electric connection region 372 connected to the N electrode are provided with an indication mark for facilitating identification by a user or automated equipment, such as a camera or a sensor, during assembly; the first electric connection region 371 and / or the second electric connection region 372 are provided with an identifiable mark for providing the indication. For example, the first electric connection region 371 and / or the second electric connection region 372 are provided with an identifiable pattern mark, such as positive pole text and negative pole text, symbols or shapes, to provide the indication. Alternatively, in yet other embodiments, the first electric connection region 371 and the second electric connection region 372 have different shapes, or they have foolproof different shapes, to provide the indication. Alternatively, in yet other embodiments, the heater 30 has an identifiable shape or hole or pattern on the second side surface of the support layer 32 as an indication mark, so that the second side surface of the heater 30 is an asymmetrically identifiable shape, to further provide the indication of the electrode polarity of the first electric connection region 371 and the second electric connection region 372.

[0168] In some embodiments, according to Figs. 2 to 4, the heater 30 further comprises:

[0169] A heat dissipation region 373 is arranged between the first and second electrical connection regions 371, 372 and is defined by a heat dissipation material. In some embodiments, the heat dissipation material of the heat dissipation region 373 has a thermal conductivity greater than 100 W / (m·K), for example in some embodiments, the heat dissipation region 373 is made of the same material as the first and second electrical connection regions 371, 372, for example they are made of copper; the heat dissipation material of the heat dissipation region 373 has a thermal conductivity greater than 200 W / (m·K); in particular, the heat dissipation region 373 made of copper has a thermal conductivity of about 400 W / (m·K). In some embodiments, the first and second electrical connection regions 371, 372 and the heat dissipation region 373 are all formed by deposition or mounting or printing of copper; which is advantageous for improving the efficiency of manufacture.

[0170] In embodiments, the heat dissipation region 373 is arranged spaced apart or isolated from the first and second electrical connection regions 371, 372. For example, there is a spacing distance 374 between the first electrical connection region 371 and the heat dissipation region 373, and a spacing distance 375 between the second electrical connection region 372 and the heat dissipation region 373.

[0171] In some embodiments, due to the small volume of the heater 30 described above, it is convenient to mechanically fix the heater 30 and solder the lead wires to access the circuit board 320; according to the illustration in Figure 7, the heating mechanism 330 of the aerosol generating device 300 further comprises:

[0172] A base 380 supports or holds or fixedly mounts the heater 30. In addition, the base 380 can also assist in dissipating heat from the heater 30. Furthermore, the base 380 is configured to provide an electrically conductive connection between the heater 30 and the circuit board 320. According to the illustration in Figure 7, the base 380 is configured to have a substantially sheet-like shape.

[0173] In embodiments, the base 380 is arranged with a plurality of or a plurality of spaced apart notches or holes 383; the notches or holes 383 are spaced apart around the circumference of the base 380. In assembly, the aerosol generating device 300 is held or fixed by extending into or inserting into the notches or holes 383.

[0174] In embodiments, the base 380 is made of a material with a relatively high thermal conductivity; the substantially sheet-like heater 30 is combined on the surface of the base 380 by welding or mounting, and is in thermal conduction with the base 380; thereby the base 380 assists in dissipating heat from the heater 30. In embodiments, the heater 30 substantially contacts at the planar contact surface of the base 380. The heater 30 and the base 380 are in planar contact or combination.

[0175] In some embodiments, the base 380 is made of a surface-insulated metal material, such as copper or other high thermal conductivity material. In some embodiments, the base 380 has a thermal conductivity greater than 100 W / (m·K).

[0176] According to FIG. 7, the base 380 comprises:

[0177] a third side 3810 and a fourth side 3820 opposite to each other;

[0178] a first electrode region 3811 and a second electrode region 3821 arranged at intervals; wherein the first electrode region 3811 is arranged close to the third side 3810, and the second electrode region 3821 is arranged close to the fourth side 3820; the first electrode region 3811 and the second electrode region 3821 are formed as a coating or a thin layer on the surface of the base 380 by deposition or spraying or printing or other methods using a conductive metal or alloy material, for electrically connecting with the first electrical connection region 371 and the second electrical connection region 372 of the heater 30 to supply power to the heater 30.

[0179] In embodiments, the first electrode region 3811 is formed continuously by a conductive metal or alloy material; and / or, the second electrode region 3821 is formed continuously by a conductive metal or alloy material.

[0180] In embodiments, the first electrode region 3811 and / or the second electrode region 3821 are not entirely exposed. The first electrode region 3811 and / or the second electrode region 3821 are partially coated or deposited or formed with a surface-insulating layer, so that part of the surface of the first electrode region 3811 and / or the second electrode region 3821 is covered and not entirely exposed. The material of the insulating layer is, for example, glaze, glass, or commonly used insulating coating materials such as polyaminoformaldehyde.

[0181] In the embodiment shown in FIG. 7, the first electrode region 3811 has an exposed contact portion 3812, and a plurality of contact portions 3813 in electrically conductive communication with the contact portion 3812. The plurality of contact portions 3813 are arranged at intervals close to the edge of the base 380. Each of the plurality of contact portions 3813 is located between two adjacent notches or holes 383.

[0182] In the embodiment shown in FIG. 7, the second electrode region 3821 has an exposed contact portion 3822, and a plurality of contact portions 3823 in electrically conductive communication with the contact portion 3822. The plurality of contact portions 3823 are arranged at intervals close to the edge of the base 380. Each of the plurality of contact portions 3823 is located between two adjacent notches or holes 383.

[0183] In assembly, when the heater 30 is mounted or coupled to the base 380, the first electrical connection region 371 of the heater 30 is aligned and fitted to and in contact with the contact portion 3812 for electrical conduction, and the second electrical connection region 372 of the heater 30 is aligned and fitted to and in contact with the contact portion 3822 for electrical conduction; and then, any one of the contact portions 3813 is connected to the circuit board 320 by soldering the first conductive lead 391, and any one of the contact portions 3823 is connected to the circuit board 320 by soldering the second conductive lead 392. In use, the base 380 provides the conductive connection between the heater 30 and the circuit board 320, which is more advantageous than the way of soldering the leads to the circuit board 320 on the first electrical connection region 371 and the second electrical connection region 372 of the small-sized heater 30.

[0184] According to the embodiment shown in Fig. 7, when the heater 30 is coupled to the base 380, the contact portion 3812 and the contact portion 3822 are shielded and covered by the heater 30; the contact portion 3813 and the contact portion 3823 are not shielded and covered by the heater 30 and are exposed outside the heater 30, which is advantageous for facilitating the soldering of the conductive leads 391 and 392.

[0185] In order to facilitate the alignment and assembly of the heater 30 and the base 380 in a predetermined direction in assembly, in the embodiment shown in Fig. 7, the contact portion 3812 and / or the contact portion 3822 is provided with an indication mark distinguishing the polarity of the electrode; for example, in Fig. 7, the contact portion 3812 is printed or sprayed with a pattern mark of the positive electrode "+" and the contact portion 3822 is printed or sprayed with a pattern mark of the negative electrode "-"; to provide an indication of the alignment of the first electrical connection region 371 with the contact portion 3812 and the alignment of the second electrical connection region 372 of the heater 30 with the contact portion 3822 in assembly.

[0186] Alternatively, in some other variant embodiments, the contact portion 3812 and / or the contact portion 3822 can also be printed or sprayed with a "P or N" pattern mark representing the P-type and N-type of the semiconductor, to provide an indication of the alignment and assembly of the heater 30 and the base 380 in a predetermined direction. Alternatively, in some other variant embodiments, the base 380 and / or the heater 30 can also be provided with identifiable foolproof structures, indication structures such as protrusions, etc., to provide an indication of the alignment and assembly of the heater 30 and the base 380 in a predetermined direction.

[0187] In the embodiment shown in Fig. 7, the base 380 is also provided with a heat dissipation connection region 384 between the contact portion 3812 and the contact portion 3822; after assembly, the heat dissipation region 373 of the heater 30 is aligned and abuts against the heat dissipation connection region 384 to form a heat conduction contact, which is advantageous for facilitating heat dissipation.

[0188] In some embodiments, when the aerosol generating article 100 is heated by the laser emitted by the heater 30, the thermal conductivity of the base 380 is good for heat dissipation, so that the temperature of the base 380 is less than 100°C. More preferably, the temperature of the base 380 is less than 85°C during operation.

[0189] In some embodiments, the heater 30 and the base 380 are both in the shape of a sheet; the area of the base 380 is at least 5 times larger than the area of the heater 30, which is advantageous for providing a larger heat dissipation area by the base 380. In some embodiments, the heater 30 and / or the base 380 are separate from the circuit board 320 and are connected by wires or the like.

[0190] Alternatively, in yet other embodiments, the heater 30 and / or the base 380 can be directly mounted or attached or arranged on the circuit board 320. For example, the heater 30 is directly soldered to the circuit board 320, so that the heater 30 is mounted on the circuit board 320 and is supported by the circuit board 320. Alternatively, the base 380 is directly soldered to the circuit board 320, so that the base 380 is mounted on the circuit board 320 and is supported by the circuit board 320.

[0191] Alternatively, FIG. 11 shows a schematic view of an aerosol generating system according to yet another embodiment; in this embodiment, the aerosol generating system comprises:

[0192] An aerosol generating article 100a configured to be a long or elongated strip; the aerosol generating article 100a is flexible and thus can be wound;

[0193] An aerosol generating device 300a comprising:

[0194] A conveying mechanism to move or convey the aerosol generating article 100a in a predetermined direction;

[0195] At least one or more heaters 30a to heat a portion of the aerosol generating article 100a delivered to a predetermined position;

[0196] An electric cell 310a and a circuit board 320a; the circuit board 320a is operable to connect the at least one or more heaters 30a to the electric cell 310a, and thus to control the electric cell 310a to supply power to the heater 30a.

[0197] In embodiments, the at least one or more heaters 30a are laser emitters that heat by radiating laser light; alternatively, the at least one or more heaters 30a comprise laser emitters. In some embodiments, the predetermined position can be a position opposite to the heater 30a in parallel.

[0198] In the embodiment shown in Figure 11, the transport mechanism comprises first and second rotatable wheels 391a, 392a arranged at intervals; when the aerosol generating article 100a is received within the aerosol generating device 300a, it is wound or wrapped around the first and second rotatable wheels 391a, 392a. In use, the first and second rotatable wheels 391a, 392a and the aerosol generating article 100a wrapped therearound form a belt drive, which enables the aerosol generating article 100a to be moved or transported in a predetermined direction by rotation of one of the first and second rotatable wheels 391a, 392a. The transported aerosol generating article 100a unwinds from one of the first and second rotatable wheels 391a, 392a and is wound around the other.

[0199] Alternatively in this embodiment, the aerosol generating article 100a can comprise:

[0200] a strip-like substrate, such as aluminium foil or the like;

[0201] a plurality of substrate portions arranged discretely or at intervals along the length of the substrate. In each heating, the heater 30a heats one substrate portion transported to a predetermined position by the transport mechanism to generate aerosol for one puff.

[0202] Alternatively in yet further varied embodiments, the aerosol generating article 100a is configured to be annular in shape; or the strip-like aerosol generating article 100a is received within the aerosol generating device 300a and transported by the transport mechanism along an arcuate or annular path of movement; and the heater 30a is located within the aerosol generating article 100a or within the arcuate or annular path of movement, which enables the heater 30a to heat only one substrate portion of the aerosol generating article 100a transported to a predetermined position in each heating.

[0203] In the above embodiments, when the aerosol generating article 100a is received within the aerosol generating device 300a, the aerosol generating device 300a is able to drive the aerosol generating article 100a to move relative to the heater 30a, which enables the heater 30a to selectively heat different positions of the aerosol generating article 100a. Alternatively in yet further varied embodiments, when the aerosol generating article 100a is received within the aerosol generating device 300a, the aerosol generating article 100a is not movable; the aerosol generating device 300a is able to drive the heater 30a to move relative to the aerosol generating article 100a, which enables the heater 30a to selectively heat different positions of the aerosol generating article 100a. In further embodiments, the aerosol generating article 100a can also be configured to be cylindrical, columnar or the like in shape.

[0204] In the above embodiments, the heater 30a is configured to emit laser light from the outside of the aerosol generating article 100a to heat the aerosol generating article 100a, or in further modified embodiments, the heater 30a can be located in or inserted into the aerosol generating article 100a to emit laser light from the inside of the aerosol generating article 100a to heat the aerosol generating article 100a.

[0205] 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 modifications based on the above description, and all such improvements and modifications should be within the scope of the claims of the present application.

Claims

1. An aerosol-generating device configured to receive an aerosol-generating article and to heat to generate an aerosol; characterized in that, Comprising: at least one heater for heating at least a portion of an aerosol generating article received in the aerosol generating device; the at least one heater is configured to heat at least a portion of an aerosol generating article by emitting laser light.

2. An aerosol-generating device according to claim 1, wherein, the at least one heater is configured to be substantially sheet-like; the at least one heater is configured to emit laser light in a direction perpendicular to the heater.

3. An aerosol-generating device according to claim 1 or 2, wherein, the at least one heater is configured to have a length and / or width of 5mm to 15mm; and / or, the at least one heater is configured to have a thickness of 1mm to 4mm.

4. An aerosol-generating device according to claim 1 or 2, wherein, the at least one heater emits laser light having a spot with a diameter of 2.5mm to 8mm.

5. An aerosol-generating device according to claim 1 or 2, wherein, the at least one heater emits laser light having a spot with a radial light intensity distribution that is approximately M-shaped; alternatively, the at least one heater emits laser light having a spot comprising a central region and a peripheral region between the central region and an outermost edge of the spot; the central region has a light intensity that is less than a light intensity of the peripheral region and greater than a light intensity of the outermost edge of the spot.

6. An aerosol-generating device according to claim 1 or 2, wherein the at least one heater comprises a plurality of laser emitters arranged non-linearly; and / or, the at least one heater comprises at least three laser emitters arranged in an array.

7. An aerosol-generating device according to claim 1 or 2, wherein Further comprising: a circuit board arranged with a circuit; the circuit is configured to control the at least one heater to heat by emitting laser light for less than a maximum predetermined time duration in each heating.

8. An aerosol-generating device according to claim 1 or 2, wherein, Further comprising: a circuit board arranged with a circuit; the circuit is configured to allow the at least one heater to initiate heating only when a time duration since a previous heating is greater than a minimum predetermined time duration; and / or, the circuit is configured to prevent the at least one heater from initiating heating when the time duration since the previous heating is less than the minimum predetermined time duration.

9. An aerosol-generating device according to claim 1 or 2, wherein, Further comprising: a circuit board arranged with a circuit; the at least one heater comprises a laser emitter for emitting laser light; the circuit is configured to allow the at least one heater to initiate heating only when the laser emitter is cooled to below a predetermined temperature.

10. An aerosol-generating device according to claim 1 or 2, wherein, the heater comprises a plurality of laser emitters arranged at intervals; the plurality of laser emitters are configured to be able to work simultaneously only; or, any one of the plurality of laser emitters is not able to work individually.

11. An aerosol-generating device according to claim 1 or 2, wherein, the heater comprises at least one planar laser emitter.

12. An aerosol-generating device according to claim 1 or 2, wherein, the heater comprises: an outer body defining an outer surface of the heater; the outer body has a sealed cavity defined therein; at least one or more laser emitters within the cavity for emitting laser light; the outer body is only partially laser-transparent, such that the laser light emitted by the laser emitters passes through the outer body to the outside of the heater.

13. An aerosol-generating device according to claim 12, wherein, the outer body comprises: a support layer having opposite first and second sides; a substantially annular fence arranged on the first side of the support layer and at least partially surrounding or defining the cavity; a light-transmissive cover, which is transparent to laser light, encloses or seals the cavity; the laser light emitted by the laser emitter is emitted through the light-transmissive cover to the outside of the heater.

14. An aerosol-generating device according to claim 13, wherein, The at least one or more laser emitters are combined with the support layer and are supported by the support layer; and / or, the support layer is not transparent to light; and / or, the support layer has a thermal conductivity greater than 80 W / (m·K); and / or, the support layer has a thickness of 0.3 mm to 1.5 mm; and / or, the support layer comprises aluminum nitride ceramic.

15. An aerosol-generating device according to claim 13, wherein, The light-transmissive cover is planar; or, the light-transmissive cover is at least partially curved.

16. An aerosol-generating device according to claim 13, wherein The fence has a thermal conductivity greater than 200 W / (m·K); and / or, the fence is made of metal or alloy material, so that the inner side surface of the fence is reflective; and / or, the fence is non-contact with the at least one or more laser emitters.

17. The aerosol-generating device of claim 12, wherein, The at least one or more laser emitters are vertical-cavity surface-emitting lasers; and / or, the at least one or more laser emitters are semiconductor lasers.

18. An aerosol-generating device according to claim 13, wherein, The laser emitter has a first electrode layer and a second electrode layer; The heater further comprises: first and second electrical connection regions, which are arranged on the surface of the second side of the support layer at intervals; the first electrical connection region is electrically connected with the first electrode layer of the laser emitter, and the second electrical connection region is electrically connected with the second electrode layer of the laser emitter, so as to supply power to the laser emitter through the first and second electrical connection regions in use.

19. An aerosol-generating device according to claim 18, wherein, The heater further comprises: at least one first indicator for providing an indication of the electrode polarity associated with the first and second electrical connection regions.

20. An aerosol-generating device according to claim 1 or 2, wherein, Further comprising: a base that supports or holds the heater.

21. An aerosol-generating device according to claim 20, wherein, The base is in planar contact or combination with the heater; and / or, the base is in contact and thermally conductive with the heater, so as to facilitate heat dissipation of the heater; and / or, the base has a thermal conductivity greater than 100 W / (m·K); and / or, the heater and the base are configured to have a substantially sheet-like shape, and the area of the base is at least 5 times the area of the heater; and / or, the base is provided with at least one or more notches or holes through which the aerosol generating device holds or fixes the base.

22. An aerosol-generating device according to claim 20, wherein, The heater is provided with an electrical connection region, and the base is provided with an electrode region electrically connected with the electrical connection region; a circuit board electrically connected with the electrode region of the base, so as to supply power to the heater.

23. An aerosol-generating device according to claim 22, wherein, Part of the surface of the electrode region is covered by an insulating layer, and has a first contact portion and a second contact portion not covered by the insulating layer; the first and second contact portions are spaced apart; The electrical connection region of the heater is electrically connected with the first contact portion, and the circuit board is electrically connected with the second contact portion.

24. An aerosol-generating device according to claim 22, wherein, The electrode region comprises a first electrode region and a second electrode region; The base is further provided with: At least one second indicator to provide an indication associated with electrode polarity of the first electrode region and the second electrode region.

25. An aerosol-generating device according to claim 1 or 2, wherein, Also included are: a circuit board configured to control the provision of power to the heater; the heater is fixedly mounted or arranged on the circuit board, or the heater is separate from the circuit board.

26. A heater for an aerosol-generating device, the heater comprising: Included are: a support layer having first and second opposite sides; a substantially annular fence arranged on the first side of the support layer and at least partially surrounding or defining a cavity; at least one or more laser emitters located within the cavity for emitting laser light; a laser light transmissive cover coupled to the fence and enclosing or sealing the cavity.

27. A heater for an aerosol generating device, characterized in that, Included are: an outer body defining an outer surface of the heater; the outer body has a sealed cavity defined therein; at least one or more laser emitters located within the cavity for emitting laser light; the outer body is only partially laser light transmissive, such that the laser light emitted by the laser emitters passes through the outer body to the outside of the heater in a direction perpendicular to the heater.

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