Aerosol generation device and heating assembly

Abstract

The present invention relates to an aerosol generation device and a heating assembly. The heating assembly comprises: a substrate, which comprises a first end and a second end arranged opposite each other, wherein the first end and the second end are arranged in sequence in an aerosol output direction; and a heating structure, which is arranged on the substrate and comprises a carrier and at least three heating units arranged on the carrier, wherein the at least three heating units are arranged at intervals between the first end and the second end, and the projection area of the heating unit close to the second end on the substrate is smaller than the projection areas of the remaining heating units on the substrate. In the heating assembly, the at least three heating units are arranged on the carrier, and the projection area of the heating unit close to the second end on the substrate is smaller than the projection areas of the remaining heating units on the substrate, such that the heating area of the heating unit close to the second end is reduced, the temperature rise rate of the heating assembly is increased, and the preheating time of the aerosol generating device is reduced, thereby ensuring the consistency of the taste during vaping, and improving the user experience.

Description

Aerosol generating device and heating element Technical Field

[0001] This invention relates to the field of atomization, and more particularly to aerosol generating devices and heating components. Background Technology

[0002] In related technologies, the heating components of aerosol generating devices are usually set directly on the surface of a metal substrate with a single or dual heating element. This usually cannot meet the two requirements of rapid smoke output and consistent smoke volume, and thus cannot guarantee the consistency of the smoking experience, resulting in a poor user experience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved heating component, and further to provide an improved aerosol generating device.

[0004] The technical solution adopted by this invention to solve its technical problem is: constructing a heating component, comprising:

[0005] The matrix includes a first end and a second end disposed opposite to each other; the first end and the second end are arranged sequentially along the aerosol output direction;

[0006] A heating structure is disposed on the substrate, including a carrier and at least three heating units disposed on the carrier. The at least three heating units are spaced apart between the first end and the second end, and the projected area of ​​the heating unit closer to the second end on the substrate is smaller than the projected area of ​​the other heating units on the substrate.

[0007] In some embodiments, each of the heating units includes at least one longitudinally arranged heating element, which extends at least partially along the circumferential direction of the substrate;

[0008] The length of the heating element of the heating unit near the second end is less than the length of the heating elements of the other heating units.

[0009] In some embodiments, the length ratio of the heating elements of the heating units arranged sequentially from the second end to the first end is 1:1 to 1:2.5.

[0010] In some embodiments, the distance between two heating elements that are adjacent and spaced apart in the axial direction of the substrate is 0.6-2 mm.

[0011] In some embodiments, the width of the heating element in the axial direction of the substrate is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0012] In some embodiments, the carrier includes a first side and a second side disposed opposite to the first side; the first side is disposed toward the first end; the second side is disposed toward the second end; at least three heating units are disposed between the first side and the second side;

[0013] The minimum distance from the heating unit closest to the first side to the first side is greater than or equal to 0.6 mm;

[0014] And / or, the minimum distance from the heating unit closest to the second side to the second side is greater than or equal to 0.6 mm.

[0015] In some embodiments, the resistance of the heating unit is 0.5-1.5Ω.

[0016] In some embodiments, the carrier is strip-shaped, and the heating structure is wound around the substrate;

[0017] The carrier is provided with an overlap area, the width of which is greater than or equal to 0.4 mm and less than or equal to 1.5 mm.

[0018] In some embodiments, all the heating units have the same shape;

[0019] Alternatively, at least one of the heating units may have a different shape than the remaining heating units;

[0020] Alternatively, all the heating units may be arranged independently of each other, with each heating unit corresponding to a substrate region.

[0021] In some embodiments, the carrier includes a first surface disposed toward the substrate and a second surface disposed opposite to the first surface; the heating unit is disposed on the first surface;

[0022] The heating structure further includes at least two conductive units, which are spaced apart on the second surface and connected to the heating unit.

[0023] In some embodiments, at least a portion of at least one of the conductive units extends circumferentially along the substrate, and the width of at least one of the conductive units in the circumferential direction of the substrate is greater than the width of the remaining conductive units in the circumferential direction of the substrate.

[0024] In some embodiments, at least one of the conductive units is divided into at least three conductive regions along the axial direction of the substrate by providing at least two dividing notches, and each conductive region is provided corresponding to a heating unit.

[0025] In some embodiments, at least two conductive units are spaced apart in the circumferential direction of the substrate, and the interval between two adjacent conductive units is 0.6-1.2 mm.

[0026] The present invention also provides an aerosol generating device, comprising the heating component described in the present invention and a power supply component connected to the heating component.

[0027] The aerosol generating device and heating component of the present invention have the following beneficial effects: the heating component provides a heating structure on the substrate and provides at least three heating units on the carrier, with the at least three heating units spaced apart between the first end and the second end of the substrate. The projected area of ​​the heating unit near the second end on the substrate is smaller than that of the other heating units, thereby reducing the heating area corresponding to the heating unit near the second end. This increases the heating rate of the heating component, reduces the preheating time of the aerosol generating device, ensures the consistency of taste during the inhalation process, and improves the user experience. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of the aerosol generating device in the first embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the heating component structure of the aerosol generating device in the first embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the heating component of the aerosol generating device shown in Figure 2 from another angle.

[0032] Figure 4 is a cross-sectional view of the heating component shown in Figure 1;

[0033] Figure 5 is a magnified schematic diagram of a partial structure of the heating component shown in Figure 2;

[0034] Figure 6 is a partial structural exploded view of the heating component shown in Figure 2;

[0035] Figure 7 is a partial structural schematic diagram of the heating component shown in Figure 2;

[0036] Figure 8 is a schematic diagram of the heating structure of the heating component shown in Figure 2;

[0037] Figure 9 is a structural exploded view of the heating structure shown in Figure 2;

[0038] Figure 10 is a schematic diagram of the heating unit structure of the heating structure shown in Figure 2;

[0039] Figure 11 is a schematic diagram of the connection between the conductive unit and the conductive structure in the heating structure shown in Figure 2;

[0040] Figure 12 is a partial structural schematic diagram of the heating component of the aerosol generating device in the second embodiment of the present invention;

[0041] Figure 13 is a partial structural exploded view of the heating structure shown in Figure 12;

[0042] Figure 14 is a partial structural schematic diagram of the heating component of the aerosol generating device in the third embodiment of the present invention;

[0043] Figure 15 is a partial structural schematic diagram of the heating component of the aerosol generating device in the fourth embodiment of the present invention;

[0044] Figure 16 is a partial structural schematic diagram of the heating structure shown in Figure 15;

[0045] Figure 17 is a partial exploded view of the heating structure shown in Figure 15;

[0046] Figure 18 is a partial structural schematic diagram of the heating component of the aerosol generating device in the fifth embodiment of the present invention. Detailed Implementation

[0047] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the terms "upper," "inner," "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing the technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on the present invention.

[0048] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0049] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0050] Figure 1 illustrates a first embodiment of the aerosol generating device 100 of the present invention. The aerosol generating device 100 heats the aerosol generating matrix 200 using a heating-without-combustion method. Specifically, the aerosol generating device 100 can heat the aerosol generating matrix 200 through heat conduction, radiation heating, or convection heating. More specifically, it can heat the aerosol generating matrix 200 through resistance heating, infrared heating, electromagnetic heating, laser heating, microwave heating, etc. In this embodiment, the aerosol generating matrix 200 can be columnar, and can be a solid material in the form of strips, sheets, granules, or integral molding made from the leaves and / or stems of plants (e.g., tobacco). Aroma components can be further added to this solid material.

[0051] As shown in Figure 1, in this embodiment, the aerosol generating device 100 may include a housing 3, a heating element 1, and a power supply element 2. The housing 3 is used to house the heating element 1 and the power supply element 2. The heating element 1 is generally tubular, and a matrix segment of the aerosol generating matrix 200 can be inserted into the heating element 1. When energized, the heating element 1 heats the matrix segment to generate aerosol. The power supply element 2 is connected to the heating element 1 and is used to supply power to the heating element 1.

[0052] As shown in Figures 2 to 8, in this embodiment, the heating component 1 may include a substrate 10 and a heating structure 20 disposed on the substrate 10. The substrate 10 may be used to support the heating structure 20 or to contain the aerosol generating matrix 200. The heating structure 20 may be disposed on the outer periphery of the substrate 10 and may be used to heat at least a portion of the aerosol generating matrix 200 inserted into the substrate 10 when energized. In some other embodiments, the heating structure 20 may not be limited to being disposed on the outer periphery of the substrate 10, but may also be disposed on the inner side of the substrate 10.

[0053] In this embodiment, the substrate 10 is a hollow structure with two through ends, and it can be roughly cylindrical. The substrate 10 may include a first end 10a and a second end 10b; the first end 10a and the second end 10b can be arranged sequentially along the aerosol output direction, that is, the second end 10b is closer to the suction end than the first end 10a. Specifically, one end of the substrate 10 is provided with a first opening 11, and the other end of the substrate 10 is provided with a second opening 12, wherein the first opening 11 is located at the first end 10a, and the second opening 12 is located at the second end 10b. The first opening 11 and the second opening 12 are interconnected, and a channel 13 is formed inside the substrate 10, which can be used for the insertion of the aerosol generation matrix 200. It can be understood that in some other embodiments, the substrate 10 may also be a hollow structure with an opening at one end. In some embodiments, the substrate 10 is not limited to being cylindrical, but can be plate-shaped.

[0054] In this embodiment, the substrate 10 can be made of metal, such as stainless steel, aluminum, or aluminum alloy. In some embodiments, the substrate 10 can also be made of non-metallic materials, such as ceramic materials (e.g., zirconium oxide) or quartz glass. In this embodiment, the axial length of the substrate 10 can be 21 mm. It is understood that in some other embodiments, the axial length of the substrate 10 is not limited to 21 mm, and its axial length can be greater than the axial length of the heating structure 20 on the substrate 10.

[0055] In this embodiment, the heating structure 20 can be in the form of a film strip; in other embodiments, the heating structure 20 can also be in the form of a longitudinally elongated sheet. The heating structure 20 is wound around the substrate 10. Specifically, the heating structure 20 can be wound around the outer surface of the substrate 10, and the heating structure 20 is fixed to the outer surface of the substrate 10 by sintering. In other embodiments, the heating structure 20 can be integrally formed with the substrate 10, thereby facilitating the assembly of the heating component 1.

[0056] As shown in Figures 9 and 10, in this embodiment, the heating structure 20 is located between the first end 10a and the second end 10b of the substrate 10; it may include a carrier 21, a heating unit 22, and at least two conductive units 23. The carrier 21 is longitudinally arranged and can be used to support the heating unit 22 and at least two conductive units 23. When the heating structure 20 is wound and fixed to the outer surface of the substrate 10, the carrier 21 may extend circumferentially along the substrate 10. The carrier 21 may include a first surface 21a and a second surface 21b. The first surface 21a may face the substrate 10. The second surface 21b may be opposite to the first surface 21a. When the carrier 21 is wound around the outer periphery of the substrate 10, the first surface 21a may be the inner surface. The second surface 21b may be the outer surface. In some other embodiments, when the carrier 21 is wound around the inner side of the substrate 10, the first surface 21a may also be opposite to the substrate 10. In this embodiment, the heating unit 22 can be disposed on the first surface 21a, and the heating unit 22 can generate heat to heat the aerosol generating matrix 200 when energized. There can be at least three heating units 22; specifically, there can be three heating units 22. In other embodiments, there can be one, two, or more than three heating units 22. The at least two conductive units 23 can be disposed on the second surface 21b and are conductively connected to the heating unit 22. Each conductive unit is disposed between the first end 10a and the second end 10b, and the conductive unit 23 can be used to conductively connect the heating unit 22 to the power supply component 2. The distance from at least one conductive unit 23 to the second end 10b is less than the distance from another conductive unit 23 to the second end 10b; that is, the distance from at least one conductive unit 23 to the second end 10b is not equal to the distance from another conductive unit 23 to the second end 10b. Furthermore, the width of the conductive unit 23 disposed near the second end 10b in the circumferential direction of the substrate 10 is greater than the width of the conductive unit 23 disposed near the first end 10a in the circumferential direction of the substrate 10. In other words, in this embodiment, at least some of the conductive units 23 can be widened to meet the actual conductivity requirements, thereby achieving the function of uniformly heating the circumferential temperature of the structure 20.

[0057] The heating structure 20 is formed by carrying the heating unit 22 and the conductive unit 23 on the carrier 21 and then placed on the base 10. By placing the heating unit 22 and the conductive unit 23 in different layers, the upward extension angle of the multiple heating units 22 around the base 10 is basically the same (the deviation of the upward extension angle of the multiple heating units 22 around the base 10 is within a very small range, which is negligible, such as no more than 3 degrees). This avoids interference between the conductive unit 23 and the heating unit 22. In addition, the area available for the heating unit 22 is increased, and it is beneficial to set multiple heating units 22 in the axial direction of the base 10, thereby increasing the heating area of ​​the heating unit 22, improving the heating consistency, improving the consistency of the sucking taste, and reducing the overall energy consumption.

[0058] In this embodiment, the carrier 21 can be a film strip, and it is made of a non-conductive material through casting. Specifically, the carrier 21 can be a ceramic film strip or a glass film strip. The carrier 21 is rectangular, and it can be wound into a cylindrical shape. Its length direction can correspond to the circumferential direction of the substrate 10, and its width direction can correspond to the axial direction of the substrate 10. In this embodiment, the thickness of the carrier 21 can be 90-160 μm (including the two end values). Further, the thickness of the carrier 21 can be selected as 110-140 μm (including the two end values). By selecting this thickness, sufficient strength can be ensured when supporting the heating unit 22 and the conductive unit 23, while also facilitating the miniaturization of the heating structure 20. In this embodiment, as shown in FIG3, an overlap area 210 is provided on the carrier 21. The width of the overlap area 210 can be greater than or equal to 0.4 mm and less than or equal to 1.5 mm. More specifically, the width of the overlap area 210 is greater than or equal to 1.3 mm and less than or equal to 3 mm. Generally, the overlap area 210 refers to the area where the carrier 21 is stacked after being wound. By selecting an overlap area 210 with this width, the extension length of the heating unit 22 in the length direction of the carrier 21 can be ensured, thereby improving the uniformity of the temperature in the heated area and facilitating the fixing of the carrier 21 after winding.

[0059] In this embodiment, the carrier 21 may include a first side 2101 and a second side 2102; the first side 2101 and the second side 2102 are disposed opposite to each other, and the two can define a first surface 21a. The first side 2101 may be disposed toward the first end 10a, and the second side 2102 may be disposed toward the second end 20b.

[0060] In this embodiment, the carrier 21 may be provided with through holes 211. There may be multiple sets of through holes 211, spaced apart along the width direction of the carrier 21 (i.e., the axial direction of the substrate 10). Each set of through holes 211 may correspond one-to-one with a heating unit 22. Each set of through holes 211 may have two rows, each row corresponding to a conductive disk of the heating unit 22; each row may have one or more through holes 211, generally preferably two. The heating unit 22 and the conductive unit 23 can be connected through the through holes 211. In this embodiment, the through hole 211 may be a circular hole. In other embodiments, the through hole 211 may not be limited to a circular hole, but may also be a square hole. The area of ​​each through hole 211 is greater than or equal to 0.05 mm². 2 and less than 3mm 2 By selecting the size of the through hole 211, the stability of the connection between the conductive unit 23 and the heating unit 22 can be ensured, and the assembly of the conductive unit 23 and the heating unit 22 can be facilitated.

[0061] The at least three heating units 22 can be disposed between the first side 2101 and the second side 2102. The minimum distance from the heating unit 22 closest to the first side 2101 to the first side 2101 can be greater than or equal to 0.6 mm, and the minimum distance from the heating unit 22 closest to the second side 2102 to the second side 2102 can be greater than or equal to 0.6 mm. This ensures that the heating unit 22 has a sufficiently large projected area on the substrate 10, i.e., the heating area, while facilitating the processing and assembly of the heating unit 22.

[0062] In this embodiment, the three heating units 22 can be designated as a first heating unit 22a, a second heating unit 22b, and a third heating unit 22c. These three heating units 22 can be spaced apart along the width direction of the carrier 21 (the axial direction of the substrate 10), thereby enabling segmented heating of the aerosol generation matrix 200, reducing preheating time, and decreasing the preheating area, thus reducing energy consumption, the maximum discharge current of the power supply component 2, and the difficulty of selecting battery cells in the power supply component 2. Furthermore, the heating units 32 can heat different areas of the matrix at different times according to the heating situation, thereby improving the consistency during the matrix extraction process. The three heating units 22 can be set independently, and each heating unit 22 can be connected to a controller, which controls its on / off state, without interference from other heating units 32. The aerosol generation matrix 200 can be divided into multiple matrix regions along the axial direction. Each heating unit 32 can be used to heat the corresponding matrix region, thereby ensuring the heating area and shortening the heating time, reducing energy consumption. By setting a heating structure 20 with multiple heating units 22 on a substrate 10, compared to setting only one heating unit 22, the matrix area corresponding to each heating unit 22 becomes smaller, and the temperature field generated when the heating unit 22 is heated covers the entire matrix area, so that the entire matrix area can be heated evenly, thereby improving the suction taste of the aerosol generation matrix 200.

[0063] In this embodiment, the heating unit 22 located near the second end 10b of the substrate 10 has a lower axial height on the substrate 10 than the other heating units 22, resulting in a smaller projected area on the substrate 10 than the other heating units 22. The first heating unit 22a, the second heating unit 22b, and the third heating unit 22c are sequentially arranged along the second end 10b toward the first end 10a, with the first heating unit 22a located near the first end 10a of the substrate 10. The axial height of the first heating unit 22a on the substrate 10 is smaller than the axial heights of the second heating unit 22b and the third heating unit 22c. The projected area of ​​the first heating unit 22a on the substrate 10 is smaller than the projected area of ​​the other heating units 22 on the substrate 10.

[0064] In this embodiment, the heating unit 22 can be formed on the first surface 21a of the carrier 21 by screen printing. Of course, it is understood that in some other embodiments, the heating unit 22 may not be limited to being formed on the carrier 21 by screen printing, for example, it may be bonded to the carrier 21.

[0065] In this embodiment, the heating unit 22 can be longitudinally arranged, extending at least partially along the length direction of the carrier 21. One end of each heating unit 22 can be connected to one of the conductive units 23, and the other end of each heating unit 22 can be connected to another of the conductive units. In this embodiment, each heating unit 22 includes a longitudinally elongated heating element 221, which can extend and meander at least partially along the length direction of the carrier 21 (i.e., the circumferential direction of the substrate 10). Each heating element 221 can have two bends. The heating element 221 can be a heating film, specifically, it can be a metal heating film. In some embodiments, the heating element 221 can also be a metal heating plate. In other embodiments, the heating element 221 of each heating unit 22 is not limited to one; it can be two, three, etc.

[0066] When there are multiple heating units 22, the heating elements 221 of the multiple heating units 22 extend at basically the same angle in the circumferential direction (length direction of the carrier 21) of the substrate 10. That is, the heating elements 221 of the multiple heating units 22 are roughly parallel in the circumferential direction of the substrate 10, or the angle deviation of the heating elements 221 of the multiple heating units 22 extending in the circumferential direction of the substrate 10 is within a very small range, which is negligible, such as no more than 3 degrees. This ensures the consistency of heating and improves the uniformity of heating.

[0067] Generally, the length of the heating element 221 of the heating unit 22 near the second end 10b can be set to be smaller than the length of the heating elements 221 of the other heating units 22, so that the projected area of ​​the heating unit 22 near the second end 10b on the base 10 is smaller than the projected area of ​​the other heating units 22 on the base 10. For example, the length of the heating element 221 of the first heating unit 22a can be set to be smaller than the length of the heating elements 221 of the second heating unit 22b and the third heating unit 22c.

[0068] By reducing the projected area of ​​the first heating unit 22a on the substrate 10, the area of ​​the heating region corresponding to the first heating unit 22a can be reduced, thereby increasing the heating rate of the heating structure 20 and reducing the preheating time. Furthermore, the reduced preheating area decreases the capacity required by the power supply component 2, thus reducing the maximum discharge current to the battery cell of the power supply component 2 and simplifying the selection of the battery cell.

[0069] In this embodiment, the length ratio of the heating elements 221 of the heating units 22 arranged sequentially from the second end 10b to the first end 10a can be 1:1 to 1:2.5. Specifically, when there are N heating units 22, where N is an integer and greater than three, the length ratio of each heating element 221 is L1:L2:…:Ln = 1:1-1.5:…:1-2. In this embodiment, the length of the heating elements 221 arranged from the second end 10b to the first end 10a of the base 10 can increase sequentially. The length of the heating element 221 of the first heating unit 22a can be 3.3 mm - 5 mm (including both ends), for example, 3.4 mm; the length of the heating element 221 of the second heating unit 22b can be 3.9 mm - 5 mm (including both ends), for example, 3.9 mm; and the length of the heating element 221 of the third heating unit 22c can be 5.5 mm - 7.6 mm (including both ends), for example, 7.6 mm. Since the first heating unit 22a needs to heat up rapidly during preheating, it can be selected to have a shorter heating element 221, which has the best heating effect when its length is 3-5 mm. The second heating unit 22b will assist in heating during the preheating process, so it can be selected to have a heating element 221 that is longer than the heating element 221 in the first heating unit 22a. In some other embodiments, the length of the third heating unit 22c can also be shorter than the length of the heating element 221 in the second heating unit 22b, as long as the length of the heating element 221 in the first heating unit 22a is shorter than the length of the heating elements 221 in the other heating units 22.

[0070] In this embodiment, the distance between the heating unit 22 located near the second end 10b and the heating unit 22 located near the first end 10a is less than the axial length of the base 10. Furthermore, the distance between the heating unit 22 located near the second end 10b and the heating unit 22 located near the first end 10a can be 18.3 mm.

[0071] In this embodiment, the resistance of each heating unit 22 is 0.5-1.5Ω (inclusive of the two-terminal value). That is, the heating element 221 can be selected with a resistance of 0.5-1.5Ω (inclusive of the two-terminal value). Specifically, the heating element 221 of the first heating unit 22a has a resistance of 0.65-0.85Ω (inclusive of the two-terminal value), and the heating elements 221 of the second heating unit 22b and the third heating unit 22c have a resistance of 0.65-1.05Ω (inclusive of the two-terminal value). Selecting heating elements 221 with this resistance value can meet the preheating power requirements. Typically, preheating requires 30-36W of power. If the resistance is too high, the preheating power will not be reached, affecting the aerosol generation effect. If the resistance is too low, the cell discharge current will be too high, affecting the cell lifespan.

[0072] In this embodiment, each heating element 221 may include a heating body 2211; the heating body 2211 may be longitudinally arranged and may include multiple heating segments, wherein at least two heating segments extend along the length direction of the carrier 21 (i.e., the circumferential direction of the substrate 10) and are spaced apart along the width direction of the carrier 21 (i.e., the axial direction of the substrate 10), and at least one heating segment may extend along the width direction of the carrier 21 (i.e., the axial direction of the substrate 10). In this embodiment, the spacing between two adjacent and spaced heating elements 221 arranged axially on the substrate 10 is 0.6-2 mm; specifically, the spacing between two heating segments extending circumferentially on the substrate 10 and adjacent in the axial direction on the substrate 10 can be 0.6-2 mm (including the end values). If the gap between the heating segments is greater than 2 mm, the temperature of the heating area corresponding to the heating unit 22 will be too low, resulting in insufficient heating of the aerosol generation matrix 200.

[0073] Specifically, the plurality of heating segments may include at least a first heating segment 221a, a second heating segment 221b, a third heating segment 221c, a fourth heating segment 221d, and a fifth heating segment 221e. The first heating segment 221a extends along the length of the carrier 21 (i.e., the circumferential direction of the substrate 10). The second heating segment 221b is connected to one end of the first heating segment 221a and extends along the width of the carrier 21 (the axial direction of the substrate 10), bending over the first heating segment 221a. The third heating segment 221c is connected to one end of the second heating segment 221b and bent over the second heating segment 221b, extending along the length of the carrier 21 (i.e., the circumferential direction of the substrate 10). The fourth heating segment 221d is connected to the other end of the first heating segment 221a and bent over the first heating segment 221a, extending along the width of the carrier 21 (the axial direction of the substrate 10). The fifth heating segment 221e can be connected to the end of the fourth heating segment 221d away from the first heating segment 221a, and is bent along with the fourth heating segment 221d. It can extend along the length direction of the carrier 21 (i.e., the circumferential direction of the substrate 10). The distance between the first heating segment 221a, the third heating segment 221c, and the fifth heating segment 221d is 0.6-2mm (including the end values). In two adjacent heating units 22, the heating segments of one heating unit 22 are spaced apart from the heating segments of the other heating unit 22, that is, they are independent and not connected to each other.

[0074] In this embodiment, the width of the heating element 221 along the axial direction of the substrate 10 can be greater than or equal to 0.5 mm and less than or equal to 1.5 mm. The widths of each heating segment of the heating element 221 can be set equally, which helps to improve the uniformity of heating and meet the processing strength requirements of the heating element 221. In some other embodiments, the widths of each heating segment of the heating element 221 may also be unequal.

[0075] Each heating element 221 further includes two conductive pads 2212; the two conductive pads 2212 are spaced apart and connected to the heating body 2211. Specifically, the two conductive pads 2212 can be disposed at both ends of the heating body 2211. Further, one conductive pad 2212 can be disposed at the end of the third heating segment 221c away from the second heating segment 221b, and the other conductive pad 2212 can be disposed at the end of the fifth heating segment 221e away from the fourth heating segment 221d. In this embodiment, the conductive pads 2212 can be integrally formed with the heating body 2211, and the conductive pads 2212 can be formed on one end of the heating body 2211 by printing or spraying.

[0076] In this embodiment, each conductive pad 2212 can be connected to a conductive unit 23, and the width of the conductive pad 2212 can be greater than the width of the heating body 2211. Specifically, the conductive pad 2212 can be connected to the conductive unit through a through hole 211. In some embodiments, the area of ​​the conductive pad 2212 can be greater than 1 mm2, thereby ensuring effective and stable contact with the conductive unit 23.

[0077] In this embodiment, at least one heating unit 22 has a different shape than the other heating units 22. Specifically, the first heating unit 22a and the second heating unit 22b have the same shape, while the third heating unit 22d may have a different shape than the first heating unit 22a and the second heating unit 22b. The second heating segment 221b and the fourth heating segment 221d of the third heating unit 22d may be arranged meanderingly along the axial direction of the base 10. The second heating segment 221b and the fourth heating segment 221d may be generally wavy. The height of the third heating unit 22d along the axial direction of the base 10 is greater than the height of the first heating unit 22a and the second heating unit 22b along the axial direction of the base 10. In some other embodiments, all heating units 22 may have the same shape.

[0078] As shown in Figures 9 and 11, in this embodiment, the conductive unit 23 and the heating unit 22 can partially overlap in the thickness direction of the carrier 21. Specifically, the projection of the conductive unit 23 onto the thickness direction of the carrier 21 of the heating unit 22 can overlap with the conductive disk 2212, thereby improving the stability of the connection between the conductive unit 23 and the heating unit 22.

[0079] In this embodiment, there can be four conductive units 23, namely, the conductive unit 23 may include a first conductive unit 23a, a second conductive unit 23b, a third conductive unit 23c, and a fourth conductive unit 23d. The first conductive unit 23a can be connected to one conductive disk 2212 of the first heating unit 22a, one conductive disk 2212 of the second heating unit 22b, and one conductive disk 2212 of the third heating unit; the second conductive unit 23b can be connected to another conductive disk 2212 of the first heating unit 22a; the second conductive unit 23b can be connected to another conductive disk 2212 of the second heating unit 22b; and the third conductive unit 23c can be connected to another conductive disk 2212 of the third heating unit 22c.

[0080] In this embodiment, the conductive unit 23 can be a conductive film, specifically a conductive metal film, such as a copper film or a silver film. The conductive unit 23 can be formed on the carrier 21 by screen printing. Specifically, each conductive unit 23 can be formed on the second surface 21b of the carrier 21 by screen printing. It is understood that in some other embodiments, the conductive unit 23 is not limited to being formed on the carrier 21 by screen printing; it can also be fixed to the carrier 21 by adhesive bonding or welding.

[0081] In this embodiment, each conductive unit 23 extends along the axial direction of the substrate 10 toward the first end 10a of the substrate 10, and at least one conductive unit 23 extends along the circumferential direction of the substrate 10. That is, the conductive unit 23 can be widened to increase the area covered by the conductive unit 23. The conductive unit 23 can conduct heat to the area covered by the conductive unit 23, thereby improving the temperature uniformity of the heating area corresponding to the heating unit 22, and thus improving the suction feel of the aerosol generating matrix 200.

[0082] In this embodiment, at least one conductive unit 23 has a width greater than the width of the other conductive units 23 in the circumferential direction of the substrate 10. Specifically, the conductive unit 23 connected to the heating unit 22 located near the second end 10b has a width greater than the width of the conductive units 23 connected to the other heating units 22 in the circumferential direction of the substrate 10. The width of the conductive unit 23 in the circumferential direction of the substrate 10 is proportional to its length in the axial direction of the substrate 10. The conductive unit 23 with a longer axial length in the axial direction of the substrate 10 has a greater width than the conductive unit 23 with a shorter axial length in the axial direction of the substrate 10. This ensures that the resistance of all conductive units 23 is approximately equal, thereby reducing the electrode impedance of each segment of the heating unit 22 and improving the heating efficiency of the heating unit 22. The ring design also provides a uniform heat distribution effect. That is, in the circumferential direction of the substrate 10, the width of the first conductive unit 23a can be greater than the widths of the second conductive unit 23b, the third conductive unit 23c, and the fourth conductive unit 23d. The width of the second conductive unit 23b may be greater than the width of the third conductive unit 23c and the fourth conductive unit 23d; the width of the third conductive unit 23c may be greater than the width of the fourth conductive unit 23d. The first conductive unit 23a, the second conductive unit 23b, the third conductive unit 23c, and the fourth conductive unit 23d all extend to the first end 10a.

[0083] In this embodiment, the spacing between two adjacent conductive units 23 is smaller than the spacing between two adjacent heating segments extending circumferentially along the substrate 10 in the heating unit 22, thereby achieving a uniform temperature. In some embodiments, the spacing between two adjacent conductive units 23 in the circumferential direction of the substrate 10 can be 0.6-2 mm (including the end values). Further, the spacing between two adjacent conductive units 23 in the circumferential direction of the substrate 10 can be 0.6-1.2 mm (including the end values).

[0084] In this embodiment, at least one conductive unit 23 is divided into at least three conductive regions 2301 along the axial direction of the substrate 10 by providing at least two dividing notches 230. Each conductive region 2301 can be correspondingly provided with a heating unit 22. Specifically, both the first conductive unit 23a and the second conductive unit 23b can be divided into three conductive regions 2301 along the axial direction by providing two dividing notches 230. Providing dividing notches 230 facilitates the positioning of the conductive disk 2212 of the heating unit 22 with the conductive regions 2301, and prevents some heating units 22 from overheating and causing heat to be transferred to other heating units 22.

[0085] As shown in Figures 2 and 6, in this embodiment, the heating component 1 further includes a protective layer 30. This protective layer 30 can be disposed on the substrate 10. Specifically, the protective layer 30 may include a first protective layer 30a and a second protective layer 30b. The first protective layer 30a can be disposed on the surface of the substrate 10 opposite to the heating structure 20, i.e., on the outer surface of the substrate 10. The second protective layer 30b can be disposed on the inner surface of the substrate 10. In some other embodiments, the protective layer 30 may be a single layer, disposed only on the surface of the substrate 10 opposite to the heating structure 20.

[0086] In this embodiment, the protective layer 30 can be an insulating material. Specifically, the protective layer 30 can be an insulating glaze layer, and the substrate 10 can be prepared by dip-coating and sintering on its inner and outer surfaces. By providing the protective layer 30, the strength of the substrate 10 can be improved, and it is beneficial to insulate the substrate 10 from the heating structure 20. In some embodiments, the thickness of the protective layer 30 can be selected as 10-50 μm, and further, the thickness of the protective layer 30 can be 20-30 μm.

[0087] As shown in Figure 11, in this embodiment, the heating component 1 further includes a conductive structure 40, which can be connected to the heating structure 20 to connect the heating component 1 to the power supply component 2, thereby enabling power to be supplied to the heating structure 20.

[0088] In this embodiment, the conductive structure 40 may include at least two conductive connectors 41, which can be connected to the heating structure 20 and are all led out from the first end 10a. Specifically, there may be four conductive connectors 41, which can be correspondingly arranged and connected to the four conductive units 23. In this embodiment, the conductive connectors 41 can be leads, which can be arranged longitudinally. Of course, it is understood that in some other embodiments, the conductive connectors 41 are not limited to leads, and can be conductive posts or conductive sheets. By leading all the conductive connectors 41 out from the first end 10a, it is convenient to match the heating structure 20 and to facilitate the assembly of the heating component 1.

[0089] In this embodiment, the connection positions 231 of the heating structure 20 with the at least two conductive connectors 41 are all located close to or near the first end 10a. Specifically, the connection position 231 of each conductive unit 23 with the conductive connector 41 is located close to or near the first end 10a. That is, the distance from the connection position 231 to the first end 10a is less than its distance to the second end 10b. In this embodiment, all connection positions 231 are equidistant from the first end 10a and are all less than their distance to the second end 10b. That is, the distance from all connection positions 231 to the first end 10a can be zero or a specific value, which is less than half the axial height of the base 10. By making all connection positions 231 equidistant from the first end 10a, conductive connectors 41 of the same length can be selected, and the length of the conductive connectors 41 can be reduced, which facilitates the selection and processing of the conductive connectors 41 and thus reduces manufacturing costs.

[0090] In this embodiment, the conductive connector 41 can be connected to the conductive unit 23 by welding or sintering with conductive paste. The welding may include tin soldering or brazing. A pad 50 may be provided at the connection position 231 between the conductive connector 41 and the conductive unit 23, and the pad 50 may be disposed on the conductive unit 23. In this embodiment, the pad 50 may be misaligned with the through hole 211, thereby improving the stability of the connection between the conductive connector 41 and the conductive unit 23.

[0091] Figures 12 and 13 show a second embodiment of the aerosol generating device 100 of the present invention. The difference between the second and third embodiments is that the shape of the heating element 221 of the heating unit 22 may be different from that of the previous embodiment. There may be four heating units 22. The shape of the first heating unit 22a may be different from that of the other heating units 22. The height of the first heating unit 22a in the axial direction of the base 10 is less than the height of the other heating units 22 in the axial direction of the base 10.

[0092] Figure 14 shows a second embodiment of the aerosol generating device 100 of the present invention. The difference between the second and third embodiments is that the shape of the heating element 221 of the heating unit 22 may be different from that of the previous embodiment. Each heating unit 22 has the same shape and the heating element 221 of each heating unit 22 has the same length.

[0093] Figures 15 to 17 illustrate a fourth embodiment of the aerosol generating device 100 of the present invention, which differs from the second embodiment in that the bending shape of the heating element 221 of the heating unit 22 may differ from the aforementioned embodiments. The first conductive unit 23a may extend along the entire circumference of the substrate 10, and the connection positions of all conductive units 23 and conductive structures 40 are not limited to being located at or near the first end 10a of the substrate 10.

[0094] Figure 18 shows a fifth embodiment of the aerosol generating device 100 of the present invention. The difference between this embodiment and the first embodiment is that the at least two conductive units 23 can be arranged at intervals along the axial direction. Specifically, the first conductive unit 23a, the second conductive unit 23b, the third conductive unit 23c, and the fourth conductive unit 23d can be arranged at intervals along the axial direction of the substrate 10. The distances from the first conductive unit 23a, the second conductive unit 23b, the third conductive unit 23c, and the fourth conductive unit 23d to the second end 10b increase sequentially, and the widths of the first conductive unit 23a, the second conductive unit 23b, the third conductive unit 23c, and the fourth conductive unit 23d in the circumferential direction of the substrate 10 decrease sequentially.

[0095] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A heating element, characterized in that, include: The substrate (10) includes a first end (10a) and a second end (10b) disposed opposite to each other; the first end (10a) and the second end (10b) are disposed sequentially along the aerosol output direction; A heating structure (20) is disposed on the substrate (10) and includes a carrier (21) and at least three heating units (22) disposed on the carrier (21). The at least three heating units (22) are disposed at intervals between the first end (10a) and the second end (10b). The projected area of ​​the heating unit (22) closer to the second end (10b) on the substrate (10) is smaller than the projected area of ​​the other heating units (22) on the substrate (10).

2. The heating component according to claim 1, characterized in that, Each of the heating units (22) includes at least one longitudinally arranged heating element (221), which extends at least partially along the circumferential direction of the base (10); The length of the heating element (221) of the heating unit (22) near the second end (10b) is less than the length of the heating element (221) of the other heating units (22).

3. The heating component according to claim 2, characterized in that, The length ratio of the heating element (221) of the heating unit (22) arranged sequentially from the second end (10b) to the first end (10a) is 1:1 to 1:2.

5.

4. The heating component according to claim 2, characterized in that, The distance between two heating elements (221) that are adjacent and spaced apart in the axial direction of the substrate (10) is 0.6-2 mm.

5. The heating component according to claim 2, characterized in that, The width of the heating element (221) in the axial direction of the substrate (10) is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

6. The heating component according to claim 1, characterized in that, The carrier (21) includes a first side (2101) and a second side (2102) disposed opposite to the first side (2101); the first side (2101) is disposed toward the first end (10a); the second side (2102) is disposed toward the second end (10b); at least three heating units (22) are disposed between the first side (2101) and the second side (2102); The minimum distance from the heating unit (22) near the first side (2101) to the first side (2101) is greater than or equal to 0.6 mm; And / or, the minimum distance from the heating unit (22) near the second side (2102) to the second side (2102) is greater than or equal to 0.6 mm.

7. The heating component according to claim 1, characterized in that, The resistance of the heating unit (22) is 0.5-1.5Ω.

8. The heating component according to claim 1, characterized in that, The carrier (21) is strip-shaped, and the heating structure (20) is wound around the substrate (10); The carrier (21) is provided with an overlap area (210), the width of which is greater than or equal to 0.4 mm and less than or equal to 1.5 mm.

9. The heating component according to claim 1, characterized in that, All of the heating units (22) have the same shape; Alternatively, at least one of the heating units (22) may have a different shape than the other heating units (22); Alternatively, all the heating units (22) are arranged independently of each other, and each heating unit (22) corresponds to a matrix region.

10. The heating component according to claim 1, characterized in that, The carrier (21) includes a first surface (21a) disposed toward the substrate (10) and a second surface (21b) disposed opposite to the first surface (21a); ​​the heating unit (22) is disposed on the first surface (21a); The heating structure (20) further includes at least two conductive units (23), which are spaced apart on the second surface (21b) and connected to the heating unit (22).

11. The heating component according to claim 10, characterized in that, At least a portion of at least one of the conductive units (23) extends circumferentially along the substrate (10), and the width of at least one of the conductive units (23) in the circumferential direction of the substrate (10) is greater than the width of the remaining conductive units (23) in the circumferential direction of the substrate (10).

12. The heating component according to claim 10, characterized in that, At least one of the conductive units (23) is divided into at least three conductive regions (2301) in the axial direction of the substrate (10) by providing at least two dividing notches (230), and each of the conductive regions (2301) is correspondingly provided with a heating unit (22).

13. The heating component according to claim 10, characterized in that, At least two of the conductive units (23) are spaced apart in the circumferential direction of the substrate (10), and the interval between two adjacent conductive units (23) is 0.6-1.2 mm.

14. An aerosol generating device, characterized in that, It includes the heating component (1) as described in any one of claims 1 to 13, and the power supply component connected to the heating component (1).

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