Heating device, aerosol generating system, and heater for heating device

Abstract

The utility model provides a heating device, an aerosol generating system and a heater for the heating device. The heating device comprises a near end and a far end which are opposite to each other; the receiving cavity is provided with a receiving opening located in the near end and used for receiving the aerosol generating product; the heater is configured to radiate light rays to the aerosol generating product received in the receiving cavity so as to heat the aerosol generating product to generate aerosol; at least part of the heater is located between the receiving cavity and the far end, and the length direction of the heater is basically perpendicular to the longitudinal arrangement of the receiving cavity. According to the heating device, the heater is transversely arranged basically perpendicular to the longitudinal direction of the receiving cavity, so that the utilization of light and the installation and fixation of the heater are facilitated.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible aerosol generation technology, and in particular to a heating device, an aerosol generation system, and a heater for the heating device. Background Technology

[0002] Tobacco products (such as cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Efforts are being made to replace these tobacco-burning products by creating products that release compounds without combustion.

[0003] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material could be tobacco or other non-tobacco products, which may or may not contain nicotine. Known heating devices heat tobacco or other non-tobacco products by contact heat conduction at temperatures of approximately 250°C to 500°C. Utility Model Content

[0004] One embodiment of this application provides a heating device configured to heat an aerosol generating article to generate an aerosol; comprising:

[0005] The proximal and distal ends facing away from each other;

[0006] The receiving cavity has a receiving port located at the proximal end; in use, the aerosol-generated article can be received into or removed from the receiving cavity through the receiving port.

[0007] A heater is configured to radiate light onto an aerosol generating article received in the receiving cavity, thereby heating the aerosol generating article to generate an aerosol; at least a portion of the heater is located between the receiving cavity and a distal end, and the longitudinal direction of the heater is substantially perpendicular to the longitudinal direction of the receiving cavity.

[0008] In some embodiments, the heater is arranged at a distance from the receiving cavity along the longitudinal direction of the receiving cavity; the heater and the receiving cavity have a first gap, so that the heater and the aerosol generating article are not in contact when the aerosol generating article is received in the receiving cavity.

[0009] In some embodiments, the heater is configured to be essentially in the form of a light bulb or lamp.

[0010] In some embodiments, the heater has a substantially cylindrical shape.

[0011] In some embodiments, the heater has a length of 10 to 25 mm.

[0012] In some embodiments, the heater includes:

[0013] The first and second ends, which are opposite to each other along the length direction;

[0014] A light-transmitting cover is arranged to extend between the first end and the second end; the light-transmitting cover surrounds or defines a sealed cavity.

[0015] A light-emitting element is located inside the cavity and is used to emit light.

[0016] In some embodiments, the light-emitting element is configured as a spiral coil.

[0017] In some embodiments, the angle between the axial direction of the light-emitting element and the longitudinal direction of the light-transmitting cover is between 0° and 30°.

[0018] And / or, the number of windings or turns of the light-emitting element is greater than or equal to 3;

[0019] And / or, the light-emitting element has a length of 3mm to 10mm;

[0020] And / or, the wire material of the light-emitting element has a diameter of 0.1 mm to 1 mm;

[0021] And / or, the ratio of the outer diameter of the light-emitting element to the inner diameter of the cavity is between 0.5 and 1;

[0022] And / or, the operating resistance of the light-emitting element is between 0.2Ω and 4Ω.

[0023] In some embodiments, the light-emitting element is an electroluminescent element;

[0024] The heater also includes:

[0025] A first conductive lead and a second conductive lead are provided for guiding current in the light-emitting element; the first conductive lead extends at least partially from the first end through the cavity to the outside of the light-transmitting cover, and / or the second conductive lead extends at least partially from the second end through the cavity to the outside of the light-transmitting cover.

[0026] In some embodiments, the light-transmitting cover further includes a first side facing the receiving cavity and a second side facing away from the first side;

[0027] The heater also includes:

[0028] A reflective element is configured to reflect at least a portion of the light emitted by the light-emitting element toward the second side toward the first side.

[0029] In some embodiments, the reflective element is arranged as a coating or film formed or incorporated into the outer surface of the light-transmitting cover.

[0030] In some embodiments, the reflective element covers only a portion of the outer surface of the light-transmitting cover, and the portion of the outer surface of the light-transmitting cover not covered by the reflective element defines the light-emitting surface of the heater.

[0031] In some embodiments, the area of ​​the outer surface of the light-transmitting cover covered by the reflective element accounts for 30% to 90% of the total area of ​​the outer surface of the light-transmitting cover.

[0032] In some embodiments, the reflective element extends substantially from the first end to the second end;

[0033] And / or, the extension dimension of the reflective element along the length direction of the heater is greater than or equal to the extension dimension of the cavity along the length direction of the heater.

[0034] In some embodiments, the angle of extension of the reflective element along the circumference of the heater is between 60° and 300°.

[0035] In some embodiments, the light-transmitting cover has a light-emitting surface facing the receiving cavity;

[0036] The light emitting surface is a curved surface that bends toward the receiving cavity; or, the light emitting surface is a plane arranged substantially perpendicular to the longitudinal direction of the receiving cavity.

[0037] In some embodiments, the light-transmitting cover further includes a first side facing the receiving cavity and a second side facing away from the first side;

[0038] The light-emitting element is configured as an arc that bends toward the first side.

[0039] In some embodiments, the light-emitting element is configured as a planar light-emitting element.

[0040] In some embodiments, the light-emitting element is configured in the shape of a grid;

[0041] Alternatively, the light-emitting element may be configured to reciprocate or bend along the length of the heater.

[0042] In some embodiments, the light-transmitting cover includes a first portion, a second portion, and a third portion arranged sequentially from the first end to the second end; the second portion surrounds or defines the cavity.

[0043] In some embodiments, the extension dimension of the first portion and / or the third portion along the length direction of the heater is between 1 mm and 10 mm.

[0044] In some embodiments, the heating device provides retention for the heater by being combined with the first portion and / or the third portion.

[0045] In some embodiments, the light-transmitting cover further includes a first side facing the receiving cavity and a second side facing away from the first side;

[0046] The heater also includes:

[0047] A reflective element is incorporated into the outer surface of the second portion and avoids the first and third portions; the reflective element is configured to reflect at least a portion of the light emitted by the light-emitting element toward the second side toward the first side.

[0048] In some embodiments, the light-transmitting cover further includes a first side facing the receiving cavity and a second side facing away from the first side;

[0049] The heater also includes:

[0050] A reflective element, incorporated into the outer surface of the light-transmitting cover, is used to reflect at least a portion of the light emitted by the light-emitting element toward the second side toward the first side;

[0051] The reflective element includes a first section, a second section, and a third section arranged sequentially from the first end to the second end; the first section completely covers or surrounds a first part of the light-transmitting cover in the circumferential direction, the second section only partially covers or surrounds a second part of the light-transmitting cover in the circumferential direction, and the third section completely covers or surrounds a third part of the light-transmitting cover in the circumferential direction.

[0052] In some embodiments, it also includes:

[0053] A temperature sensor is integrated into the surface of the heater and is shielded from the light-emitting surface;

[0054] The circuit board is configured to determine the temperature or power of the light-emitting element based on the sensing result of the temperature sensor, and adjust the power supplied to the light-emitting element to keep the light-emitting element at a predetermined temperature or predetermined power.

[0055] Another embodiment of this application also proposes an aerosol generation system, comprising:

[0056] Aerosol-generating products; and

[0057] The heating device described above.

[0058] Another embodiment of this application provides a photoheater for a heating device, comprising:

[0059] The first and second ends that are opposite to each other along the length direction; the first and second sides that are opposite to each other.

[0060] A light-transmitting cover is arranged to extend between the first end and the second end; the light-transmitting cover surrounds or defines a sealed cavity.

[0061] A light-emitting element is located inside the cavity and is used to emit light;

[0062] A reflective element is formed or incorporated on the outer surface of the light-transmitting cover and is configured to reflect at least a portion of the light emitted by the light-emitting element toward the second side toward the first side.

[0063] Another embodiment of this application provides a photoheater for a heating device, comprising:

[0064] A light-transmitting cover has a first end and a second end opposite to each other along its length, as well as a first side and a second side opposite to each other; a sealed cavity surrounds or defines the inside of the light-transmitting cover.

[0065] A light-emitting element is located inside the cavity and is used to emit light;

[0066] The light-transmitting cover has a light-emitting surface located on the first side, and the light-emitting surface is a flat plane.

[0067] In some embodiments, the light-emitting element is arranged as a planar light-emitting element substantially parallel to the light-emitting surface.

[0068] Another embodiment of this application provides a photoheater for a heating device, comprising:

[0069] The first and second ends that are opposite to each other along the length direction, and the first and second sides that are opposite to each other;

[0070] A light-transmitting cover surrounds or defines a sealed cavity; the light-transmitting cover also has a light-emitting surface located on the first side;

[0071] A light-emitting element is located within the cavity and is used to emit light; the light-emitting element is configured to be an arc-shaped shape that is bent or convex toward the first side.

[0072] The heating device described above is arranged with the heater horizontally positioned, basically perpendicular to the longitudinal direction of the receiving cavity. This arrangement is beneficial for promoting the utilization of light and for the installation and fixation of the heater. Attached Figure Description

[0073] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0074] Figure 1 This is a schematic diagram of an aerosol generation system provided in one embodiment;

[0075] Figure 2 yes Figure 1 A schematic diagram of the structure of the heater from one perspective;

[0076] Figure 3 yes Figure 2 Another exploded view of the heater;

[0077] Figure 4 yes Figure 2 A cross-sectional view of the heater from another perspective;

[0078] Figure 5 This is a schematic diagram of the heater from one perspective of yet another embodiment;

[0079] Figure 6 yes Figure 5 A cross-sectional view of the heater from another perspective;

[0080] Figure 7 This is a schematic diagram of the heater from one perspective of yet another embodiment;

[0081] Figure 8 yes Figure 7 A cross-sectional view of the heater from another perspective;

[0082] Figure 9 This is a cross-sectional schematic diagram of the heater from one perspective of yet another embodiment;

[0083] Figure 10 yes Figure 9 Another exploded view of the heater;

[0084] Figure 11 This is a cross-sectional schematic diagram of the heater from one perspective of yet another embodiment;

[0085] Figure 12 yes Figure 11 Another exploded view of the heater;

[0086] Figure 13 This is a schematic diagram of the structure of a light-emitting element from one viewpoint in yet another embodiment;

[0087] Figure 14This is a schematic diagram of the heater from one perspective of yet another embodiment;

[0088] Figure 15 yes Figure 14 A cross-sectional view of the heater from another perspective;

[0089] Figure 16 yes Figure 14 Another exploded view of the heater;

[0090] Figure 17 This is a schematic diagram of the heater from one perspective of yet another embodiment;

[0091] Figure 18 yes Figure 17 A cross-sectional view of the heater from another perspective;

[0092] Figure 19 yes Figure 17 Another exploded view of the heater;

[0093] Figure 20 This is a schematic diagram of the heater from one perspective of yet another embodiment;

[0094] Figure 21 yes Figure 20 Another exploded view of the heater;

[0095] Figure 22 yes Figure 20 Another exploded view of the heater. Detailed Implementation

[0096] To facilitate understanding of this application, a more detailed description of this application will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0097] One embodiment of this application provides an aerosol generation system for generating aerosols. In some embodiments, the aerosol generation system includes: an aerosol generation article and a heating device for heating the aerosol generation article to generate aerosols. The aerosol generation article can generate aerosols by being heated.

[0098] Figure 1 A schematic diagram of an aerosol generation system according to one embodiment is shown; in this embodiment, the aerosol generation system includes:

[0099] Aerosol generating article 1000 includes an aerosol generating matrix, which generates aerosols when heated;

[0100] Heating device 100 is used to receive aerosol generation product 100 and heat it to generate aerosol for users to inhale.

[0101] In some embodiments, the aerosol generating article 1000 has an overall elongated cylindrical structure, for example, configured to resemble the cylindrical shape of a cigarette. Alternatively, in other variations, the aerosol generating article 1000 may be an elongated elliptical cylinder, a square prism, a polygonal prism, etc. In some embodiments, the appearance of the aerosol generating article 1000 may mimic the appearance of a conventional lit and smokeable cigarette. The aerosol generating article 1000 may have an outer diameter between approximately 5 mm and 12 mm (e.g., between approximately 5 mm and 10 mm). The aerosol generating article 1000 has a total length between approximately 40 and 100 mm; in alternative embodiments, the aerosol generating article 1000 has a total length between approximately 45 and 55 mm.

[0102] In some embodiments, the aerosol-generating article 1000 includes an aerosol-generating matrix; the aerosol-generating matrix describes a matrix capable of releasing volatile compounds upon heating, which can form aerosols. The aerosols described herein can be visible or invisible and can include vapors (e.g., fine particles of matter in a gaseous state, which are typically liquid or solid at room temperature) as well as droplets of gas and condensed vapors. The aerosol-generating matrix can include one or more of the following: powder, granules, pellets, fragments, strands, strips, or sheets, comprising one or more of the following: dried flowers or leaves, grass leaves, tobacco leaves, tobacco midribs, expanded tobacco, and homogenized tobacco.

[0103] In some embodiments, the aerosol generating article 1000 may further include a filter nozzle for filtering and discharging the aerosol; the filter nozzle may typically comprise a porous material such as cellulose acetate. In some embodiments, when the aerosol generating article 1000 is heated within the heating device 100, the filter nozzle is exposed outside the heating device 100, thus facilitating suction for the user.

[0104] according to Figure 1 As shown, the heating device 100 includes:

[0105] The housing 10 has a proximal end 110 and a distal end 120 facing away from each other; the proximal end 110 is provided with a receiving port 111, through which the aerosol-generated article 1000 can be received into or removed from the heating device 100 during use.

[0106] In some embodiments, a partition wall 150 is arranged inside the housing 10; the partition wall 150 is arranged substantially perpendicular to the longitudinal direction of the heating device 100.

[0107] In use, an electronic chamber is formed and defined between the partition wall 150 and the distal end 120 of the housing 10. In this embodiment, the electronic chamber is primarily used to house electronic functional components, such as a battery cell 130 for power supply, and a circuit board 140, etc.

[0108] In one embodiment, an aerosol-generating article 1000 is arranged between a partition wall 150 and the proximal end 110 of the outer casing 10, and a heater 30 is arranged for heating.

[0109] In some embodiments, the output voltage of cell 130 can be approximately 3.7V to 4.5V.

[0110] according to Figure 1 In the illustrated embodiment, the heating device 100 further includes:

[0111] The support 20 may be generally arranged in a tubular shape; the support 20 surrounds or defines the receiving cavity 210 for receiving the aerosol generating article 1000; when the aerosol generating article 1000 is received within the receiving cavity 210, it is at least partially surrounded and enclosed by the support 20. In some embodiments, the support 20 is rigid; the support 20 may be made of rigid materials such as ceramics, polymer plastics, or metals.

[0112] according to Figure 1 As shown, a stop structure 22 is also arranged inside the heating device 100, such as a protrusion or abutment step arranged on the inner wall of the support 20; when the aerosol generating article 1000 is received in the receiving cavity 210 or / or the support 20, the aerosol generating article 1000 is inserted into the upstream end of the heating device 100 and abuts against the stop structure 22 longitudinally, and is stopped by abutting against the stop structure 22.

[0113] according to Figure 1 As shown, a shielding or sealing element 21, such as an O-ring, is also arranged inside the support 20, near the receiving port 111. When the aerosol generating article 1000 is received in the receiving cavity 210, the sealing element 21 elastically abuts against the inner surface of the aerosol generating article 1000 and the support 20; the sealing element 21 clamps or holds the aerosol generating article 1000 in the radial direction.

[0114] In some embodiments, the inner diameter of the support 20 is substantially the same as the outer diameter of the aerosol generating article 1000; when the aerosol generating article 1000 is received in the receiving cavity 210, the inner surface of the support 20 contacts and abuts against the outer surface of the aerosol generating article 1000, so that there is substantially no gap or gap between them.

[0115] Or for example in Figure 1In the illustrated embodiment, the diameter of the receiving cavity 210 is larger than the diameter of the aerosol generating article 1000; when the aerosol generating article 1000 is received in the receiving cavity 210, there is a gap between it and the inner surface of the support 20 in the radial direction. In some embodiments, there is a gap of approximately 0.1 to 2 mm between the aerosol generating article 1000 and the inner surface of the support 20 in the radial direction of the receiving cavity 210. The gap between the aerosol generating article 1000 and the support 20 is sealed by the sealing element 21 near the receiving port 11.

[0116] according to Figure 1 As shown, the heating device 100 also includes:

[0117] The heater 30 is electrically connected to the circuit board 140, and the circuit board 140 can control the supply of power from the battery cell 140 to the heater 30. When the circuit board 130 supplies power, the heater 30 can radiate light to the aerosol generating article 1000 to heat the aerosol generating article 1000 by light.

[0118] according to Figure 1 As shown, the heater 30 is aligned with the receiving cavity 210 along the longitudinal direction of the heating device 100. And in Figure 1 As shown, heater 30 is closer to the distal end 120 than receiving cavity 210. In use, heater 30 emits light toward proximal end 110 and / or receiving cavity 210.

[0119] exist Figure 1 In the illustrated embodiment, heater 30 is configured as a light bulb or LED; in some alternative embodiments, heater 30 is substantially elongated. Alternatively, heater 30 may be approximately a point light source.

[0120] In one embodiment, the receiving cavity 210 and the heater 30 are arranged at a distance; or, the heater 30 does not extend into the receiving cavity 210. According to... Figure 1 As shown, when the aerosol generating article 1000 is received in the receiving cavity 210, the heater 30 is spaced apart from the aerosol generating article 1000. Alternatively, the heater 30 and the aerosol generating article 1000 are not in contact; thus, in use, the heater 30 does not heat the aerosol generating article 1000 through contact heat conduction. Figure 1 In the illustrated embodiment, when the aerosol generating article 1000 is received in the receiving cavity 210 along the longitudinal direction of the receiving cavity 210, there is a first distance d11 between the heater 30 and the aerosol generating article 1000, the first distance d11 being approximately 0.1 mm to 5 mm. Alternatively, there is a first distance d11 between the heater 30 and the receiving cavity 210 along the longitudinal direction of the receiving cavity 210.

[0121] In some embodiments, for example Figure 1 As shown, heater 30 is located upstream of receiving chamber 210 / aerosol generating article 1000, or receiving chamber 210 / aerosol generating article 1000 is located downstream of heater 30. Thus, during suction, air flows at least partially through heater 30 to partially absorb heat from the surface of heater 30 before being delivered to aerosol generating article 1000, thereby providing auxiliary heating of aerosol generating article 1000 by hot air in addition to photothermal heating. The terms 'upstream' and 'downstream' are used with respect to the relative directions of suction performed by the user during use. Downstream can be the direction closer to the user's suction, while upstream is the direction away from the user; and upstream is the direction of air inflow, while downstream is the direction of air outflow.

[0122] During use, according to Figure 1 As shown, part of the light emitted by heater 30 is like... Figure 1 As indicated by the middle arrow R1, the aerosol generating article 1000 is directly irradiated or radiated to its upstream end and absorbed; another portion of the light, such as... Figure 1 As indicated by the middle arrow R2, the light is irradiated onto the inner surface of the support 20 and then reflected onto the peripheral surface of the aerosol generating article 1000, where it is absorbed by the aerosol generating article 1000.

[0123] In some embodiments, the inner surface of the support 20 is reflective, thereby reflecting light incident on the inner surface of the support 20 toward the outer surface of the aerosol generating article 1000. In some specific embodiments, the reflectivity of the inner surface of the support 20 can be formed by spraying a reflective coating or film. The reflective coating or film may include metals such as silver, aluminum, tin, stainless steel, etc.

[0124] according to Figures 1 to 4 In the illustrated embodiment, the heater 30 is a non-spherical shape, i.e., a non-spherical bulb. In this embodiment, the heater 30 is substantially cylindrical. In this embodiment, the longitudinal direction of the heater 30 is substantially perpendicular to the longitudinal direction of the receiving cavity 210.

[0125] In some optional embodiments, the heater 30 has a length of approximately 10–25 mm; the heater 30 has an outer diameter of approximately 5–15 mm. In some specific optional embodiments, the heater 30 has a length of approximately 10–25 mm.

[0126] exist Figures 1 to 4 In the illustrated embodiment, the heater 30 includes:

[0127] The first light-transmitting cover at least partially defines the outer surface of the light heater 30; the light-transmitting cover 31 is hollow and has a sealed cavity 311 inside;

[0128] The light-emitting element 32 is located inside the cavity 311 and is used to emit light.

[0129] In some embodiments, the light-emitting element 32 is an electroluminescent element and is connected to the circuit board 140 by soldering or arranging a first conductive lead 321 and a second conductive lead 322 at both ends; in use, the circuit board 140 controls the supply of power from the battery cell 130 to the light-emitting element 32, thereby causing the light-emitting element 32 to emit light.

[0130] In some embodiments, the light-emitting element 32 is held or soldered between the first conductive lead 321 and the second conductive lead 322, and is supported and guided by the first conductive lead 321 and the second conductive lead 322. The first conductive lead 321 and the second conductive lead 322 pass through the cavity 31 to the outside of the light-transmitting cover 31, and are then electrically connected to the circuit board 140.

[0131] exist Figures 1 to 4 In the illustrated embodiment, the light-emitting element 32 is an electroluminescent element that emits light when powered by the circuit board 140. In this embodiment, the light-emitting element 32 is substantially configured as a solenoid coil. In some specific embodiments, the axis of the solenoid coil-shaped light-emitting element 32 is perpendicular to the longitudinal direction of the aerosol generating article 1000 and / or the receiving cavity 210. In some specific embodiments, the solenoid coil-shaped light-emitting element 32 has three or more windings or turns; or more preferably, the solenoid coil-shaped light-emitting element 32 has approximately 3 to 12 windings and a length of approximately 3 to 10 mm. Furthermore, the conductor material of the light-emitting element 32 has a diameter of approximately 0.1 to 1 mm.

[0132] In some embodiments, the wire material of the light-emitting element 32 may include tungsten wire, carbon fiber wire, tin oxide wire, stainless steel wire, etc. Alternatively, in some other embodiments, the wire material of the light-emitting element 32 is composed of an oxide of at least one metallic element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, Zn. Alternatively, in some other embodiments, the wire material of the light-emitting element 32 may include a light-emitting metal or alloy, such as Fe-Mn-Cu alloys, stainless steel alloys, nickel-chromium alloys, etc. In one specific embodiment, the light-emitting element 32 is a tungsten wire; or, the light-emitting element 32 is composed of a tungsten wire with a purity of 99% or higher. Alternatively, in yet another specific embodiment, the light-emitting element 32 is made of stainless steel wire.

[0133] In some embodiments, the light-emitting element 32 is powered by the circuit board 130 and heated by resistive Joule heating, emitting light at an operating temperature of 450–2800°C. More preferably, the light-emitting element 32 emits light at an operating temperature of 500–2200°C. More preferably, the light-emitting element 32 emits light at an operating temperature of 800–1500°C, the emitted light wavelength range being advantageous for heating the aerosol-generating matrix.

[0134] In some embodiments, the wavelength range of the light emitted by the light-emitting element 32 is in the range of 200 nm to 3500 nm. The light emitted by the light-emitting element 32 is primarily infrared light. More specifically, the proportion of light with wavelengths of 800 nm to 1300 nm in the light emitted by the light-emitting element 32 is greater than 50% of the total light. Alternatively, in some other embodiments, the proportion of light with wavelengths of 800 nm to 1300 nm in the light emitted by the light-emitting element 32 is greater than 70% of the total light, which is advantageous for the heating aerosol generating article 1000.

[0135] In some embodiments, due to the PTC effect of the light-emitting material of the light-emitting element 32, the resistance of the light-emitting element 32 increases with increasing operating temperature. Preferably, in this embodiment, the initial resistance of the light-emitting element 32 at room temperature is less than 1Ω, more specifically, for example, 0.2Ω to 1Ω. During operation, the operating resistance of the light-emitting element 32 is less than 4Ω, more specifically, for example, 0.2Ω to 4Ω. In some embodiments, the light-emitting element 32 has a positive temperature coefficient of resistance, so that during use, the circuit board 140 can determine the temperature of the light-emitting element 32 by measuring its resistance.

[0136] In some embodiments, the first conductive lead 321 and the second conductive lead 322 may be made of a low resistivity metal or alloy, such as silver, copper or gold, nickel or alloys containing them.

[0137] In some embodiments, the light-transmitting cover 31 may be made of a high-temperature resistant and light-transmitting material such as quartz, glass, ceramic, or mica; preferably, it is a transparent material. For example, the light-transmitting cover 31 made of quartz glass or borosilicate glass has a transmittance of more than 90% for the light emitted by the light-emitting element 32; in a more preferred embodiment, the light-transmitting cover 31 made of high-purity quartz has a transmittance of more than 95% for the light emitted by the light-emitting element 32.

[0138] In some embodiments, the axial direction of the light-emitting element 32, which is configured as a spiral coil, is substantially parallel to the length direction of the light-transmitting cover 31. Alternatively, in some optional embodiments, the angle of inclination between the axial direction of the light-emitting element 32 and the length direction of the light-transmitting cover 31 is less than 30°; for example, the angle of inclination between the axial direction of the light-emitting element 32 and the length direction of the light-transmitting cover 31 is between 0° and 30°.

[0139] In some embodiments, the light-emitting element 32 and the light-transmitting cover 31 are non-contact. In some embodiments, the ratio of the outer diameter of the light-emitting element 32, which is configured as a spiral coil, to the inner diameter of the cavity 311 of the light-transmitting cover 31 is between 0.5 and 1. Alternatively, after assembly, there is a gap of 0 to 5 mm between the light-emitting element 32 of the spiral coil and the inner surface of the cavity 311 of the light-transmitting cover 31.

[0140] Alternatively, in some other variations, the outer diameter of the light-emitting element 32 of the spiral coil is substantially the same as the inner diameter of the cavity 311 of the light-transmitting cover 31; then, after assembly, the light-emitting element 32 is in contact with and abuts against the inner surface of the cavity 311.

[0141] In some embodiments, the cavity 311 of the light-transmitting cover 31 is filled with halogen, such as iodine vapor. In some specific embodiments, the cavity 311 is sealed with 1×10 -6 ~1×10 -2 μmol / mm 3 Halogen. Or in some embodiments, the cavity 311 of the light-transmitting cover 31 is filled with an inert gas, such as argon or helium.

[0142] Alternatively, in some embodiments, the pressure inside the cavity 311 of the light-transmitting cover 31 is less than the pressure outside the light-transmitting cover 31; that is, the cavity 311 has a vacuum or the cavity 311 is evacuated. In some specific embodiments, the pressure inside the cavity 311 is less than 0.85 atm.

[0143] according to Figures 1 to 4 As shown, heater 30 includes:

[0144] The first side 310 and the second side 320 are opposite to each other, and the first end 330 and the second end 340 are opposite to each other along the length direction.

[0145] In this embodiment, the first side 310 and the second side 320 are arranged opposite to each other along the longitudinal direction of the heating device 100 and / or the receiving cavity 210. After assembly, the first side 310 faces the receiving cavity 210, and the first side 310 is the light-emitting side of the heater 30, while the second side 320 is the backlight side of the heater 30. In use, light emitted by the light-emitting element 32 is emitted from the first side 310. The second side 320 is the backlight side of the heater 30.

[0146] After assembly, at least a portion of the first conductive lead 321 extends from the first end 330 to the outside of the heater 30 and is electrically connected to the circuit board 140; and at least a portion of the second conductive lead 322 extends from the second end 340 to the outside of the heater 30 and is electrically connected to the circuit board 140.

[0147] exist Figures 1 to 4 In the illustrated embodiment, the light-transmitting cover 31 is a columnar shape extending along the length of the heater 30 between the first end 330 and the second end 340; and the light-transmitting cover 31 defines the light-emitting surface of the heater 30 facing the first side 310. The wall thickness of the light-transmitting cover 31 surrounding and defining the portion of the cavity 311 is approximately 0.15 to 1.5 mm, which is advantageous for giving the light-transmitting cover 31, made of quartz or glass, suitable strength.

[0148] exist Figures 1 to 4 In the illustrated embodiment, the surfaces of the light-transmitting cover 31 on the first side 310 and the second side 320 are curved surfaces; for example, in Figures 1 to 4 In one embodiment, the light-transmitting cover 31 is substantially cylindrical; therefore, the surfaces of the light-transmitting cover 31 on the first side 310 and the second side 320 are curved arc surfaces. Correspondingly, in Figures 1 to 4 In the embodiment shown, the light-emitting surface of the heater 30 facing the first side 310 is a curved arc surface.

[0149] according to Figures 1 to 4 As shown, heater 30 also includes:

[0150] The reflective element 33 provides reflection at least partially on the second side 320. Alternatively, the reflective element 33 is configured to reflect light emitted by the light-emitting element 32 toward the second side 320 toward the first side 310, so that the light emitted by the light-emitting element 32 is used as much as possible to heat the aerosol generating article 1000, thereby improving the utilization rate of the light emitted by the light-emitting element 32.

[0151] In some embodiments, the reflective element 33 is arranged as a coating or film formed or bonded to the surface of the light-transmitting cover 31. For example, in some embodiments, the reflective element 33 includes a light-reflecting coating such as silver, mercury, or aluminum formed or bonded to the surface of the light-transmitting cover 31. In some embodiments, the thickness of the coating or film of the reflective element 33 may be between 0.05 mm and 1.0 mm.

[0152] exist Figures 1 to 4 In the illustrated embodiment, the reflective element 33 is at least partially formed or incorporated into at least a portion of the surface of the light-transmitting cover 31 facing the second side 320. Figures 1 to 4 In the illustrated embodiment, the reflective element 33 is substantially arc-shaped. More specifically in Figures 1 to 4 In the embodiment shown, the reflective element 33 extends in an arc of approximately π along the circumference of the heater 30; or, the reflective element 33 extends in an angle of 180° along the circumference of the heater 30.

[0153] exist Figures 1 to 4In the illustrated embodiment, the reflective element 33 extends substantially from the first end 330 of the light-transmitting cover 31 to the second end 340. Alternatively, the length of the reflective element 33 along the length of the heater 30 is substantially equal to the length of the outer surface of the light-transmitting cover 31 along the length of the heater 30. The length of the reflective element 33 along the length of the heater 30 is greater than or equal to the length of the cavity 311 along the length of the heater 30.

[0154] In one embodiment, the reflective element 33 is only incorporated into or covers a portion of the outer surface of the light-transmitting cover 31. In another embodiment, the portion of the outer surface of the light-transmitting cover 31 not covered by the reflective element 33 defines the light-emitting surface of the heater 30. In some alternative embodiments, the area of ​​the outer surface of the light-transmitting cover 31 covered by the reflective element 33 accounts for between 30% and 90% of the total area of ​​the outer surface of the light-transmitting cover 31.

[0155] exist Figures 1 to 4 In the illustrated embodiment, the light-transmitting cover 31 is convex on the surface of the first end 330; and the light-transmitting cover 31 is convex on the surface of the second end 340. In some specific embodiments, the protrusion height of the surfaces of the first end 330 / second end 340 of the light-transmitting cover 31 is approximately 1.4 mm to 1.5 mm.

[0156] exist Figures 1 to 4 In the illustrated embodiment, the heater 30 further includes:

[0157] A temperature sensor 34, such as a thermocouple or a PTC temperature sensor, is attached to the outer surface of the light-transmitting cover 31 to sense the temperature of the surface of the light-transmitting cover 31. In some embodiments, the circuit board 140 can indirectly determine the temperature or power of the light-emitting element 32 by monitoring the sensing results of the temperature sensor 34; and adjust the power supplied to the light-emitting element 32 so that the light-emitting element 32 is maintained at a predetermined temperature or predetermined power.

[0158] In some embodiments, the temperature sensor 34 is arranged away from the light-emitting surface of the light-transmitting cover 31.

[0159] or Figures 5 to 6 A schematic diagram of a heater 30a according to yet another embodiment is shown; in this embodiment, the heater 30a includes:

[0160] The first side 310a and the second side 320a are opposite to each other, and the first end 330a and the second end 340a are opposite to each other along the length direction;

[0161] A light-transmitting cover 31a extends along the length direction between a first end 330a and a second end 340a; a substantially sealed cavity 311a is defined inside the light-transmitting cover 31a, and a light-emitting element 32a is contained and arranged inside the cavity 311a; the light-emitting element 32a is configured as a spiral coil extending along the length direction of the heater 30a.

[0162] The first conductive lead 321a and the second conductive lead 322a are respectively connected to the two ends of the light-emitting element 32a to guide current on the light-emitting element 32a; the first conductive lead 321a extends at least partially from the cavity 311a to the outside of the first end 330a of the light-transmitting cover 31a, and the second conductive lead 322a extends at least partially from the cavity 311a to the outside of the second end 340a of the light-transmitting cover 31a.

[0163] In some embodiments, heater 30a further includes:

[0164] Sealing materials, such as a first sealing material 351a and a second sealing material 352a. The first sealing material 351a is used to provide a seal between the first conductive lead 321a and the light-transmitting cover 31a, and the second sealing material 352a is used to provide a seal between the second conductive lead 322a and the light-transmitting cover 31a, thereby preventing gaps from forming between the first conductive lead 321a and / or the second conductive lead 322a and the light-transmitting cover 31a, which would damage the seal of the cavity 311a.

[0165] In some embodiments, the first sealing material 351a and the second sealing material 352a are metals capable of withstanding high temperatures of at least 800°C, such as molybdenum, titanium, or alloys containing them, whose coefficients of thermal expansion are close to those of the glass or quartz light-transmitting cover 31a. In some specific embodiments, during fabrication, the first sealing material 351a (molybdenum sheet or titanium alloy sheet) is bonded at high temperature between the first conductive lead 321a and the light-transmitting cover 31a, thereby tightly bonding the first conductive lead 321a and the light-transmitting cover 31a to form a seal. Similarly, the second sealing material 352a (molybdenum sheet or titanium alloy sheet) is bonded at high temperature between the second conductive lead 322a and the light-transmitting cover 31a, thereby tightly bonding the second conductive lead 322a and the light-transmitting cover 31a to form a seal.

[0166] according to Figure 5 and Figure 6 In the embodiment shown, heater 30a further includes:

[0167] The reflective element 33a is configured to reflect light emitted by the light-emitting element 32a toward the second side 320a toward the first side 310a. In some embodiments, the reflective element 33a is arranged as a coating or film formed or bonded to the surface of the light-transmitting cover 31a. For example, in some embodiments, the reflective element 33a includes a light-reflecting coating such as silver, mercury, or aluminum formed or bonded to the surface of the light-transmitting cover 31a.

[0168] In this embodiment, the extension dimension of the reflective element 33a along the length direction of the heater 30a is smaller than the extension dimension of the light-transmitting cover 31a. Specifically, in this embodiment, the extension dimension of the reflective element 33a along the length direction of the heater 30a is substantially the same as the extension dimension of the cavity 311a. Furthermore, in this embodiment, the extension of the reflective element 33a overlaps with the cavity 311a along the length direction of the heater 30a.

[0169] Alternatively, in one embodiment, the light-transmitting cover 31a may include a first portion, a second portion, and a third portion arranged sequentially along its length from a first end 330a to a second end 340a; wherein the cavity 311a is defined by the second portion, or the cavity 311a is located within the second portion; a reflective element 33a is formed or incorporated on the second portion and avoids the first and third portions. Furthermore, the reflective element 33a extends at an angle of 180° along the circumference of the heater 30. In another embodiment, a first sealing material 351a forms a seal between the first conductive lead 321a and the first portion through high-temperature welding or the like, and a second sealing material 352a forms a seal between the second conductive lead 322a and the third portion through high-temperature welding or the like.

[0170] In some embodiments, the first portion and / or the third portion extend in the length direction of the heater 30a by an dimension between 1 and 10 mm.

[0171] In use, the heating device 100 can provide support for the heater 30a by means of a support component such as silicone or plastic parts, which is attached to the first part and / or the third part. Alternatively, the heating device 100 can hold the heater 30a by means of the first part and / or the third part.

[0172] Or in Figure 7 and Figure 8 The diagram shows a schematic of another variation of the heater 30b, in which the heater 30b includes:

[0173] The first side 310b and the second side 320b are opposite to each other, and the first end 330b and the second end 340b are opposite to each other along the length direction;

[0174] A light-transmitting cover 31b extends along the length direction between a first end 330b and a second end 340b. The light-transmitting cover 31b may include a first part, a second part, and a third part arranged sequentially from the first end 330b to the second end 340b along the length direction. A cavity is defined in the second part, and a light-emitting element is arranged in the cavity.

[0175] The reflective element 33b is configured to reflect light emitted by the light-emitting element toward the second side 320b toward the first side 310b; in this embodiment, the reflective element 33b has a larger area on the outer surface of the light-transmitting cover 31b. Specifically in Figure 7 As shown, the reflective element 33b includes a first segment 331b, a second segment 332b, and a third segment 333b extending along the length direction between a first end 330b and a second end 340b. The first segment 331b is attached to the outer surface of the first portion and is a closed ring in the circumferential direction of the first portion. The third segment 333b is attached to the outer surface of the third portion and is a closed ring in the circumferential direction of the third portion. The second segment 332b is attached to the outer surface of the second segment 332b and is arranged close to the second side 320b. The second segment 332b is a non-closed ring in the circumferential direction. The light emitting surface of the heater 30b is defined by the surface of the second portion of the light-transmitting cover 31b that is not covered by the second segment 332b of the reflective element 33b.

[0176] exist Figure 7 and Figure 8 In the illustrated embodiment, the second segment 332b extends at an angle of approximately 180° in the circumferential direction. Alternatively, in other variations, the second segment 332b may extend at an angle between 60° and 300° in the circumferential direction.

[0177] or Figure 9 and Figure 10 A schematic diagram of a heater 30c according to yet another embodiment is shown, in which the heater 30c includes:

[0178] A light-transmitting cover 31c extends along its length between a first end and a second end; a cavity 311c is defined inside the light-transmitting cover 31b.

[0179] The light-emitting element 32c is located within the cavity 311c; in this embodiment, the light-emitting element 32c is configured as a cylindrical shape wound from a sheet; more specifically, the light-emitting element 32c is wound from a mesh-like sheet. In this embodiment, the mesh-like sheet wound to form the light-emitting element 32c can be formed by etching, stamping, or cutting.

[0180] Specifically in Figure 9 and Figure 10 In the illustrated embodiment, the light-emitting element 32c has the following formed or defined features:

[0181] The slits or notches 323c arranged longitudinally make the light-emitting element 32c non-closed in the circumferential direction;

[0182] The first electrical connection portion 324c and the second electrical connection portion 325c are located on both sides of the slit or notch 323c, respectively; and the first electrical connection portion 324c and the second electrical connection portion 325c define the electrical connection area of ​​the light-emitting element 32c; the first electrical connection portion 324c is connected to the first conductive lead 321c by welding or other means, and the second electrical connection portion 325c is connected to the second conductive lead 322c by welding or other means, so that current is guided on the light-emitting element 32c through the first conductive lead 321c and the second conductive lead 322c during use;

[0183] The electroluminescent part 326c is connected between the first electrical connection part 324c and the second electrical connection part 325c, and is basically cylindrical in shape; a plurality of mesh holes 327c are arranged on the electroluminescent part 326c, so that the electroluminescent part 326c is basically mesh-like.

[0184] In this embodiment, the first electrical connection portion 324c and the second electrical connection portion 325c do not have mesh holes.

[0185] exist Figure 9 and Figure 10 In the embodiment shown, in the wound light-emitting element 32c, the first electrical connection portion 324c and the second electrical connection portion 325c are closer to the second side 320c than the electroluminescent portion 326c.

[0186] or Figure 11 and Figure 12 A schematic diagram of a heater 30d according to yet another variation is shown; in this embodiment, the heater 30d includes:

[0187] The first side 310d and the second side 320d are opposite to each other, and the first end 330d and the second end 340d are opposite to each other along the length direction;

[0188] A light-transmitting cover 31d extends along its length between a first end and a second end; a cavity 311d is defined within the light-transmitting cover 31d.

[0189] The light-emitting element 32d is housed or arranged within the cavity 311d.

[0190] exist Figure 11 and Figure 12 In the illustrated embodiment, the light-emitting element 32d is formed by bending a mesh-like sheet. In this embodiment, the light-emitting element 32d is a curved arc shape, rather than a cylindrical shape. Figure 11 and Figure 12In the embodiment shown, the light-emitting element 32d is bent or protrudes toward the first side 310d.

[0191] exist Figure 11 and Figure 12 In the illustrated embodiment, the circumferential extension of the light-emitting element 32d is approximately π, i.e., the extension angle is approximately 180°. Alternatively, in more embodiments, the extension angle of the light-emitting element 32d in the circumferential direction may be between 60° and 240°.

[0192] exist Figure 11 and Figure 12 In the illustrated embodiment, the light-emitting element 32d has a first electrical connection portion 324d and a second electrical connection portion 325d arranged at intervals, and a mesh-like electroluminescent portion 326d connected between the first electrical connection portion 324d and the second electrical connection portion 325d. A first conductive lead 321d is soldered to the first electrical connection portion 324d, and a second conductive lead 322d is soldered to the second electrical connection portion 325d, thereby connecting the light-emitting element 32d to the circuit board 140.

[0193] Or in Figure 13 A schematic diagram of an arc-shaped, curved light-emitting element 32e according to yet another embodiment is shown; in Figure 13 As shown, the circumferential extension of the light-emitting element 32e is approximately π, that is, the extension angle is approximately 180°; or in more embodiments, the extension angle of the light-emitting element 32e in the circumferential direction may be between 60° and 240°. Figure 13 In the illustrated embodiment, the light-emitting element 32e is arranged in a longitudinally reciprocating or bending manner; specifically, the light-emitting element 32e is formed by repeatedly bending a conductive wire material in the longitudinal direction. The repeatedly bent light-emitting element 32e has multiple U-shaped repeating units. Current is guided across the two ends of the light-emitting element 32e by connecting a first conductive lead 321e and a second conductive lead 322e.

[0194] or Figures 14 to 16 A schematic diagram of a heater 30f according to yet another variation is shown; in this embodiment, the heater 30f includes:

[0195] The first side 310f and the second side 320f are opposite to each other, and the first end 330f and the second end 340f are opposite to each other along the length direction;

[0196] A light-transmitting cover 31f extends along its length between a first end 330f and a second end 340f; a cavity 311f is defined inside the light-transmitting cover 31f.

[0197] A light-emitting element 32f is housed or arranged within a cavity 311f. A first conductive lead 321f and a second conductive lead 322f are respectively connected to both ends of the light-emitting element 32f to guide current through it. The first conductive lead 321f extends from inside the cavity 311f to outside the first end 330f, and the second conductive lead 322f extends from inside the cavity 311f to outside the second end 340f.

[0198] exist Figures 14 to 16 In the illustrated embodiment, the light-transmitting cover 31f is substantially semi-cylindrical; correspondingly, the cavity 311f also has a substantially semi-cylindrical shape. In this embodiment, the surfaces of the light-transmitting cover 31f at the first end 330f and / or the second end 340f are flat planes. In this embodiment, the surface of the light-transmitting cover 31f facing the first side 310f is a flat plane; in use, this flat plane defines the light-emitting surface of the heater 30f facing the first side 310f. In this embodiment, the light-emitting surface of the heater 30f is arranged substantially perpendicular to the longitudinal direction of the receiving cavity 210. In some embodiments, the flat surface of the light-transmitting cover 31f facing the first side 310f has a length of approximately 10–25 mm and a width of approximately 5–15 mm.

[0199] exist Figures 14 to 16 In the illustrated embodiment, the surface of the light-transmitting cover 31f facing the second side 320f is curved. The circumferential extension angle of the surface of the light-transmitting cover 31f facing the second side 320f is approximately 180°; or in more embodiments, the circumferential extension angle of the surface of the light-transmitting cover 31f facing the second side 320f may be between 60° and 240°.

[0200] exist Figures 14 to 16 In the illustrated embodiment, the light-emitting element 32f is essentially a planar light-emitting element. The light-emitting element 32f is arranged essentially parallel to the light-emitting surface of the heater 30f.

[0201] exist Figures 14 to 16 In the illustrated embodiment, the light-emitting element 32f is essentially bent back and forth along its length. Alternatively, in other embodiments, the light-emitting element 32f may be a grid shape.

[0202] exist Figures 14 to 16 In the embodiment shown, the light-emitting element 32f is arranged relatively closer to the first side 310f; specifically, the distance between the light-emitting element 32f and the first side 310f is less than the distance between it and the second side 320f.

[0203] exist Figure 15In the illustrated embodiment, the substantially semi-cylindrical cavity 311f has a first inner surface facing or near the first side 310f and a second inner surface facing or near the second side 320f. The first inner surface is flat, and the second inner surface is curved. The light-emitting element 32f is substantially parallel to the first inner surface.

[0204] exist Figure 15 In the illustrated embodiment, along the longitudinal direction of the heating device 100 / receiving cavity 210, the distance between the light-emitting element 32f and the first inner surface is less than the maximum distance d22 between the light-emitting element 32f and the second inner surface. In some specific embodiments, the distance between the light-emitting element 32f and the first inner surface is approximately 0.1 mm to 1.0 mm; the maximum distance d22 between the light-emitting element 32f and the second inner surface can be between 0.5 mm and 5.0 mm.

[0205] exist Figures 14 to 16 In the embodiment shown, a reflective element 33f is also formed or arranged on the surface of the light-transmitting cover 31f facing the second side 320f, for reflecting the light emitted by the light-emitting element 32f toward the second side 320f toward the first side 310f.

[0206] or Figures 17 to 19 A schematic diagram of a heater 30g according to yet another embodiment is shown; in this embodiment, the heater 30g is configured to be generally square or square tubular in shape. Figures 17 to 19 The 30g medium heater is basically flat in shape.

[0207] In this embodiment, the heater 30g comprises:

[0208] The heater 30g comprises a first side 310g and a second side 320g facing away from each other, and a first end 330g and a second end 340g facing away from each other along the length direction. In this embodiment, the first side 310g and the second side 320g are facing away from each other along the thickness direction of the heater 30g. The heater 30g includes a first outer surface located on the first side 310g and a second outer surface located on the second side 320g; both the first outer surface and the second outer surface are flat planes. The first outer surface is a light-emitting surface.

[0209] In this embodiment, the heater 30g further includes:

[0210] A light-transmitting cover 31g extends along its length between a first end 330g and a second end 340g; a cavity 311g is defined inside the light-transmitting cover 31g.

[0211] A light-emitting element 32g is housed or arranged within a cavity 311g. In this embodiment, the light-emitting element 32g is substantially planar. A first conductive lead 321g and a second conductive lead 322g are respectively connected to both ends of the light-emitting element 32g for guiding current through it. The first conductive lead 321g extends from inside the cavity 311g to outside the first end 330g, and the second conductive lead 322g extends from inside the cavity 311g to outside the second end 340g.

[0212] In this embodiment, the heater 30g further includes:

[0213] A reflective element 33g is formed or disposed on the second side 320g of the heater 30g, for reflecting light emitted by the light-emitting element 32g toward the second side 320g toward the first side 310g. In this embodiment, the reflective element 33g is substantially planar.

[0214] exist Figures 17 to 19 In the illustrated embodiment, before the components of the heater 30g are assembled, the light-transmitting cover 31g is open at its first end 330g to allow the light-emitting element 32g to extend into or be assembled into the cavity 311g from the first side 310g. After the light-emitting element 32g extends into or is assembled into the cavity 311g from the first side 310g, a molten precursor material, such as glass glaze, is applied to the open end 330g of the light-transmitting cover 31g using an adhesive application or dispensing process. After the molten precursor material cools and solidifies, it forms a blocking element 37g that is bonded to the light-transmitting cover 31g to close the open end 330g of the light-transmitting cover 31g.

[0215] Using the above-mentioned adhesive application or dispensing to seal the first end 330g of the light-transmitting cover 31g is advantageous for the mass production of heaters 30g.

[0216] or Figures 20 to 22 A schematic diagram of a heater 30h according to yet another embodiment is shown; in this embodiment, the heater 30h includes:

[0217] A light-transmitting cover 31h extends along its length between a first end 330h and a second end 340h; the light-transmitting cover 31h defines a first side 310h and a second side 320h facing away from each other. The first side 310h is the light-emitting side, and the second side 320h is the backlight side. A cavity 311h is defined within the light-transmitting cover 31h.

[0218] The light-emitting element 32h is housed and arranged within the cavity 311h. In this embodiment, the light-emitting element 32h is a wound cylindrical shape. A first conductive lead 321h and a second conductive lead 322h are connected to the light-emitting element 32h for guiding current through the light-emitting element 32h.

[0219] exist Figures 20 to 22 In the illustrated embodiment, both the first conductive lead 321h and the second conductive lead 322h extend from the first end 330h to the outside of the light-transmitting cover 31h, thereby facilitating connection with the circuit board 140. In this embodiment, the first conductive lead 321h and the second conductive lead 322h extend from the same end of the light-transmitting cover 31h to the outside of the light-transmitting cover 31h, which is convenient for fabrication.

[0220] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A heating device configured to heat an aerosol generating article to generate an aerosol; characterized in that, Comprise: opposite proximal and distal ends; a receiving cavity having a receiving opening at the proximal end; in use, an aerosol-generating article is receivable into or removable from the receiving cavity through the receiving opening; a heater configured to radiate light to an aerosol-generating article received in the receiving cavity, thereby heating the aerosol-generating article to generate an aerosol; at least a portion of the heater is located between the receiving cavity and the distal end, and the length direction of the heater is substantially perpendicular to the longitudinal direction of the receiving cavity.

2. The heating device of claim 1, wherein In the longitudinal direction of the receiving cavity, the heater is arranged spaced apart from the receiving cavity; the heater and the receiving cavity have a first spacing therebetween, thereby the heater is non-contact with an aerosol-generating article when the aerosol-generating article is received in the receiving cavity.

3. The heating device of claim 1 or 2, wherein The heater is configured to be substantially in the form of a lamp bead or a lamp bulb.

4. The heating device of claim 1 or 2, wherein The heater has a substantially columnar shape.

5. The heating device of claim 1 or 2, wherein The heater has a length of 10-25 mm.

6. The heating device of claim 1 or 2, wherein The heater comprises: opposite first and second ends in the length direction; a light-transmissive cover arranged to extend between the first and second ends; the light-transmissive cover surrounds or defines a sealed cavity; a light-emitting element located in the cavity and configured to emit light.

7. The heating device of claim 6, wherein The light-emitting element is configured to be in the form of a spiral coil.

8. The heating device of claim 7, wherein, An included angle between the axial direction of the light-emitting element and the length direction of the light-transmissive cover is 0-30°; and / or, the light-emitting element has a winding number or a number of turns of greater than or equal to 3; and / or, the light-emitting element has a length of 3-10 mm; and / or, a wire material of the light-emitting element has a diameter of 0.1-1 mm; and / or, a ratio of an outer diameter of the light-emitting element to an inner diameter of the cavity is 0.5-1; and / or, an operating resistance of the light-emitting element is 0.2-4 Ω.

9. The heating device of claim 6, wherein, The light-emitting element is an electro-optic light-emitting element. The heater further comprises: first and second conductive leads for conducting electric current through the light-emitting element; the first conductive lead at least partially extends from the first end to outside the light-transmissive cover within the cavity, and / or the second conductive lead at least partially extends from the second end to outside the light-transmissive cover within the cavity.

10. The heating device of claim 6, wherein, The light-transmissive cover further comprises a first side facing the receiving cavity, and a second side facing away from the first side; The heater further comprises: a reflective element configured to reflect at least part of the light emitted by the light-emitting element towards the second side towards the first side.

11. The heating device of claim 10, wherein, The reflective element is arranged to be a coating or a film formed on or bonded to an outer surface of the light-transmissive cover.

12. The heating device of claim 10, wherein, The reflective element only covers or coats part of the outer surface of the light-transmissive cover, and a light exit surface of the heater is defined by the part of the outer surface of the light-transmissive cover not covered or coated by the reflective element.

13. The heating device of claim 10, wherein, An area of the outer surface of the light-transmissive cover covered by the reflective element accounts for 30-90% of a total area of the outer surface of the light-transmissive cover.

14. The heating device of claim 10, wherein, The reflective element is substantially extended from the first end to the second end. And / or, the extension size of the reflective element along the length direction of the heater is greater than or equal to the extension size of the cavity along the length direction of the heater.

15. The heating device of claim 10, wherein, The extension angle of the reflective element along the circumference direction of the heater is between 60° and 300°.

16. The heating device of claim 6, wherein, The light-transmissive cover has a light exit surface facing the receiving cavity; The light exit surface is a curved surface curved towards the receiving cavity; or, the light exit surface is a plane arranged substantially perpendicular to the longitudinal direction of the receiving cavity.

17. The heating device of claim 6, wherein, The light-transmissive cover further comprises a first side facing the receiving cavity, and a second side facing away from the first side; The light-emitting element is configured to be an arc shape curved towards the first side.

18. The heating device of claim 6, wherein, The light-emitting element is configured to be a planar light-emitting element.

19. The heating device of claim 6, wherein, The light-emitting element is configured to be a grid shape; Or, the light-emitting element is configured to be reciprocally winding or reciprocally bending along the length direction of the heater.

20. The heating device of claim 6, wherein, The light-transmissive cover comprises a first portion, a second portion and a third portion arranged in sequence from the first end to the second end; the second portion surrounds or defines the sealed cavity.

21. The heating device of claim 20, wherein, The extension size of the first portion and / or the third portion along the length direction of the heater is between 1mm and 10mm.

22. The heating device of claim 20, wherein, The heating device provides retention to the heater by being combined with the first portion and / or the third portion.

23. The heating device of claim 20, wherein, The light-transmissive cover further comprises a first side facing the receiving cavity, and a second side facing away from the first side; The heater further comprises: A reflective element combined with the outer side surface of the second portion, and avoiding the first portion and the third portion; the reflective element is configured to reflect at least part of the light emitted by the light-emitting element towards the second side towards the first side.

24. The heating device of claim 20, wherein, The light-transmissive cover further comprises a first side facing the receiving cavity, and a second side facing away from the first side; The heater further comprises: A reflective element combined with the outer side surface of the light-transmissive cover, for reflecting at least part of the light emitted by the light-emitting element towards the second side towards the first side; The reflective element comprises a first segment, a second segment and a third segment arranged in sequence from the first end to the second end; the first segment completely covers or surrounds the first portion of the light-transmissive cover in the circumferential direction, the second segment only partially covers or surrounds the second portion of the light-transmissive cover in the circumferential direction, and the third segment completely covers or surrounds the third portion of the light-transmissive cover in the circumferential direction.

25. The heating device of claim 16, wherein, Further comprising: A temperature sensor combined with the surface of the heater, and avoiding the light exit surface; A circuit board configured to determine the temperature or power of the light-emitting element according to the sensing result of the temperature sensor, and adjust the power provided to the light-emitting element to maintain the light-emitting element at a predetermined temperature or a predetermined power.

26. An aerosol-generating system comprising: Comprising: An aerosol-generating article; And The heating device of any one of claims 1 to 25.

27. A heater for a heating device, characterized in that Comprising: Opposite first and second ends in the length direction, and opposite first and second sides; A light-transmissive cover arranged to extend between the first and second ends; the light-transmissive cover surrounds or defines a sealed cavity; A light-emitting element located in the cavity and configured to emit light; A reflective element formed on or in connection with an outer surface of the light-transmissive cover and configured to reflect at least part of the light emitted by the light-emitting element towards the first side.

28. A heater for a heating device, characterized in that Comprising: a light-transmissive cover having first and second ends opposite along a length direction, and first and second sides opposite; a sealed cavity enclosed or defined by the light-transmissive cover; a light-emitting element located within the cavity and configured to emit light; the light-transmissive cover has a light exit surface located at the first side, the light exit surface being a flat plane.

29. A heater for a heating device as claimed in claim 28, wherein, the light-emitting element is arranged as a planar light-emitting element substantially parallel to the light exit surface.

30. A heater for a heating device, characterized in that Comprising: first and second ends opposite along a length direction, and first and second sides opposite; a light-transmissive cover enclosing or defining a sealed cavity; the light-transmissive cover further has a light exit surface located at the first side; a light-emitting element located within the cavity and configured to emit light; the light-emitting element is configured as an arc-shaped light-emitting element curved or convex towards the first side.

Images