Aerosol generation device and heating device thereof

Abstract

The present invention relates to an aerosol generation device and a heating device thereof. The heating device is used for the aerosol generation device and comprises a substrate and at least two heating layers. The substrate comprises at least two heating areas, and a first partition used for stopping heat transfer is provided between each two adjacent heating areas. The at least two heating layers are respectively arranged in the at least two heating areas. In the present invention, by providing the first partition between each two adjacent heating areas, the heat transfer between the at least two heating areas can be reduced.

Description

FIELD

[0001] The present disclosure relates to the field of heat-not-burn apparatuses, more particularly to an aerosol generation device and a heating device thereof.BACKGROUND

[0002] An aerosol generation device is electronic equipment for heating but not burning aerosol generation substances (solid substance, for example, plant leaf products such as tobacco). A core part of the aerosol generation device is a heating device. The heating device can heat the aerosol generation substance to generate an aerosol needed by a user by heating the aerosol generation substance to a temperature at which the aerosol is generated without burning.

[0003] The heating device in related art includes a substrate and a heating layer, with two or multiple sections different of which heat at different times, arranged on the substrate. The substrate is an integrated whole. When the heating layer heats the aerosol generation substance in a section thereof, the heat generated by the heating area will be rapidly transferred to the adjacent sections not needed to be heated, which results in heat loss, thereby increasing the power consumption.SUMMARY

[0004] The present disclosure is to provide an improved aerosol generation device and a heating device thereof.

[0005] The technical solution that the present invention adopts to resolve the technical issue is to provide a heating device, comprising: a substrate, comprising at least two heating areas, wherein a first partition for blocking heat transfer is arranged between every two adjacent heating areas; and at least two heating layers, arranged on the at least two heating areas, respectively.

[0006] In some embodiments, the substrate is tubular-shaped.

[0007] In some embodiments, the at least two heating areas are distributed in an axial direction of the substrate.

[0008] In some embodiments, the first partition comprises at least one groove which penetrates through an inner surface and an outer surface of the substrate and extends in a circumferential direction of the substrate.

[0009] In some embodiments, the first partition comprises a plurality of through holes which penetrate through the inner surface and the outer surface of the substrate and are distributed at an interval in the circumferential direction of the substrate.

[0010] In some embodiments, the substrate is made of a material which comprises metal or ceramic.

[0011] In some embodiments, the heating device further comprises an insulating layer, wherein the insulating layer comprises at least two insulating parts which are arranged on outer surfaces of the at least two heating areas, respectively, and the at least two heating layers are arranged on outer surfaces of the at least two insulating parts, respectively.

[0012] In some embodiments, a second partition is arranged between every two of the insulating parts, and the second partition corresponds to the first partition.

[0013] In some embodiments, the heating device further comprises a protecting layer, wherein the protecting layer comprises at least two protecting parts that cover the at least two heating layers, respectively.

[0014] In some embodiments, a third partition is arranged between every two of the protecting parts, and the third partition corresponds to the first partition.

[0015] In some embodiments, the at least two heating layers are arranged on outer sides of the at least two heating areas, respectively.

[0016] In some embodiments, the heating device, further comprising at least two another heating layers, wherein the at least two another heating layers are disposed on inner sides of the at least two heating areas, respectively.

[0017] In some embodiments, the at least two heating areas both are tubular-shaped and are integrally connected.

[0018] In some embodiments, the substrate further comprises a fixing section arranged at an end of the substrate, and the fixing section is integrally connected to the heating areas.

[0019] In some embodiments, the at least two heating layers comprise resistive film layers and the at least two heating layers are spiral.

[0020] The present disclosure further provides an aerosol generation device, comprising the heating device described above.

[0021] The present disclosure has the following beneficial effects: by arranging the first partition between every two adjacent heating areas, heat transfer between at least two heating areas can be reduced.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present disclosure will be further described in detail below in conjunction with drawings and embodiments. FIG. 1 is a three-dimensional schematic structural diagram of an aerosol generation device in some embodiments of the present disclosure; FIG. 2 is a three-dimensional schematic structural diagram of a heating device of the aerosol generation device shown in FIG. 1; FIG. 3 is an exploded view of the heating device shown in FIG. 2; FIG. 4 is a partial schematic diagram of a first partition of the heating device shown in FIG. 3; FIG. 5 is a sectional schematic diagram of the schematic diagram of the exploded structure of the heating device shown in FIG. 3; and FIG. 6 is a three-dimensional structural schematic diagram of the heating device shown in FIG. 3 when heating layers are arranged on a substrate. DESCRIPTION OF THE EMBODIMENTS

[0023] To understand the technical features, objects, and effects of the present disclosure more clearly, the specific embodiments of the present disclosure are illustrated with reference to drawings.

[0024] In the descriptions of the present disclosure, it should be understood that orientation or position relations indicated by the terms "longitudinal", "axial", "length", "width", "upper", "lower", "top", "bottom", "inner", "outer", etc. are orientation or position relations shown in the drawings or orientation or position relations of common placement when the product of the present disclosure is used, are only to facilitate description of the present disclosure and simplify the description rather than indicating or implying that the referenced device or element must have a particular orientation and be constructed and operated in a particular orientation, and thus may not be construed as a limitation to the present disclosure.

[0025] In addition, the terms "first" and "second" are merely used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defining "first", "second", and the like can expressively or implicitly include at least one feature. In the description of the present disclosure, unless otherwise specified, "a plurality of" means at least two, for example, two, three, and the like.

[0026] In the present disclosure, unless otherwise specified and defined, the terms "mount", "connect", "connection" and "fix" shall be understood in a board sensor. For example, it can be either fixed connection or detachable connection or integrated connection; either mechanical connection or electrical connection; either direct connection or indirect connection through an intermediate, and communication in two components or interaction relaxation of the two components, unless otherwise specified. Those of ordinary skill in the art can understand the specific meaning of the terms in the present invention under specific circumstances.

[0027] Figure 1 illustrates an aerosol generation device 1 in some embodiments of the present disclosure and an aerosol generation substance 2 detachably inserted at one end of the aerosol generation device 1. The aerosol generation device 1 can be in a square column shape in some embodiment to facilitate a user to hold it. The aerosol generation device 1 can bake and heat the aerosol generation substance 2 inserted therein at a low temperature to release an aerosol extract in the aerosol generation substance 2 in a non-burn state. The aerosol generation substance 2 can be cylindrical in some embodiments, which may include a solid aerosol generation substance of plant leaves after treatment. It can be understood that the aerosol generation device 1 is not limited to the square column shape. In some other embodiments, it can also be cylindrical, cylindroid, and the like.

[0028] The aerosol generation device 1 in some embodiment can include a heating device 10 and a housing 20 for carrying the heating device 10. The heating device 10 in some embodiments can be tubular-shaped. The aerosol generation substance 2 can be detachably inserted into the heating device 10 such that the heating device 10 can heat and bake the aerosol generation substance 2 from the periphery of the aerosol generation substance 2. The aerosol generation device 1 in some embodiment can further include a battery or batteries (not shown in the Figures) arranged in the housing 20. The battery is electrically connected to the heating device 10 to supply power to the heating device 10.

[0029] Referring to Figures 2-5 together, the heating device 10 in some embodiments can include a substrate 11, an insulating layer 12 arranged on an outer surface of the substrate 11, two heating layers 13 arranged on an outer surface of the insulating layer 12, and protecting layer 14 arranged on outer surfaces of the two heating layers 13. It can be understood that the number of the heating layers 13 can be greater than two.

[0030] The substrate 11 in some embodiment can be cylindrical-shaped and made of a metal material, which includes two heating areas axially integrally connected to each other and a first partition 113 arranged between the two heating areas. Specifically, the two heating areas include a first heating area 111 and a second heating area 112. The first partition 113 is arranged between the first heating area 111 and the second heating area 112. When the first heating area 111 heats and the second heating area 112 does not heat, the first partition 113 can reduce heat transfer from the first heating area 111 to the second heating area 112 thereby reducing the heat loss of the first heating area 111 and improve the heating efficiency of the first heating area 111, so that the power consumption is reduced. Moreover, when the first heating area 111 heats and the second heating area 112 does not heat, the temperature of the first heating area 111 can be rapidly increased, so that the preheating time is shortened. Further, as the first heating area 111 is fixed, the area of a heated medium is decreased, so that the aerosol generation substance can be rapidly heated and atomized in a small area to improve the concentration of the aerosol.

[0031] Similarly, when the second heating area 112 heats and the first heating area 111 does not heat, the first partition 113 can reduce heat transfer from the second heating area 112 to the first heating area 111 thereby reducing the heat loss of the second heating area 112 and improve the heating efficiency of the second heating area 112, so that the power consumption is reduced. Moreover, when the second heating area 112 heats and the first heating area 111 does not heat, the temperature of the second heating area 112 can be rapidly increased, so that the preheating time is shortened. Further, as the second heating area 112 is fixed, the area of a heated medium is decreased, so that the aerosol generation substance can be rapidly heated and atomized in a small area to improve the concentration of the aerosol.

[0032] In some embodiments, the two heating layers 13 are arranged on outer sides of the two heating areas, respectively, and two another heating layers 13 can also be disposed on inner sides of the two heating areas, respectively. It can be understood that the substrate 11 is not limited to being cylindrical-shaped, but can be square tubular-shaped, regular polygonal tubular-shaped, and the like. It can be further understood that the substrate 11 is not limited to being cylindrical, but can be flake-like and so on. It can also be understood that the substrate 11 is not limited to being made of a conducting material such as a metal, but can be made of a non-metal material such as a heat conducting ceramic. It can be understood that the number of the heating areas is not limited to two, but can also be three or more, and one first partition 113 is arranged between every two adjacent heating areas.

[0033] The first partition 113 in some embodiments can include a plurality of grooves, and each of the grooves penetrates through the inner surface and the outer surface of the substrate 11 so that the grooves have a better heat insulation effect. In some embodiments, the grooves can be elongated-shaped and have a certain extension length. Each of the grooves extends in a circumferential direction of the substrate 11, and the plurality of grooves are uniformly distributed at an interval in the circumferential direction of the substrate 11. It can be understood that each of the first partitions 113 can also include one groove only. In some other embodiments, the grooves do not penetrate through the inner and outer surfaces of the tubular-shaped substrate 11. For example, the grooves can extend from the outer surface of the cylindrical substrate 11 to the inner surface but do not penetrate through the inner surface. It can be understood that the more space occupied by the first partition 113 on the substrate 11, the better the heat insulation effect is. The first partition 113 occupying too much space may lead to insufficient structural strength of the substrate 11, which affects the heating effect. In other embodiments, the number and size of the grooves can be designed according to the material, thickness, and the like of the substrate 11.

[0034] In some embodiments, the first partition 113 may include a plurality of through holes (not shown in the drawings), and the through holes can be distributed at an interval in the circumferential direction of the substrate 11. Each of the through holes penetrates through the inner surface and the outer surface of the substrate 11. It can be understood that the shape of the through holes is not limited and can be in various shapes such as round, elliptic, square, or triangular shapes. It can be understood that the arrangement mode of the plurality of through holes can be set as needed, for example, the distribution of the plurality of through holes in the axial direction of the substrate 11. It can be understood that the first partition 113 can be achieved by way of either the grooves and / or through holes or other ways, which is not limited herein.

[0035] The insulating layer 12 in some embodiments can cover the outer surface of the substrate 11, including a first insulating part 121 and a second insulating part 122. The first insulating part 121 and the second insulating part 122 cover the first heating area 111 and the second heating area 112, respectively. A second partition 123 is arranged between the first insulating part 121 and the second insulating part 122. The size, shape, and position of the second partition 123 correspond to the size, shape, and position of the first partition 113. The insulating layer 12 can be formed by one of the processes such as dipcoating, sintering, magnetron sputtering, and spraying, covering the outer surface of the substrate 11. Specifically, the insulating layer 12 in some embodiments can also be a ceramic film formed by a casting process technology. After the heating layer 13 is screen-printed to the insulating layer 12, the insulating layer 12 made of the ceramic film is wound on the substrate 11 and the heating layer 13 is located on one side opposite to the substrate 11. Then, the ceramic film and the heating layer 13 are sintered to the substrate 11. It can be understood that when the substrate 11 is made of a non-metal material such as heat conducting ceramic, the insulating layer 12 may be omitted.

[0036] The heating layer 13 in some embodiments is a spiral resistive film layer, including a first heating layer and a second heating layer. The first heating layer and the second heating layer are formed on the first insulating part 121 and the second insulating part 122 by way of screen printing, respectively, so that segmented heating of the aerosol generation substance can also be achieved. The first heating layer and the second heating layer can be distributed in the axial direction of the cylindrical substrate 11, to segmented heat the aerosol generation substance in the axial direction of the aerosol generation substance. It can be understood that the first heating layer and the second heating layer can also be distributed in the circumferential direction of the substrate 11. When voltages are applied to two poles of the heating layer 13, a current passes through the heating layer 13 to make the heating layer 13 generate heat to bake and heat the aerosol generation substance. It can be understood that the structural form of the heating layer 13 is not limited, for example, it can be a heating film, a metal heating wire, a metal heating sheet, or a metal heating mesh. It can be understood that the number of the heating layers 13 is not limited to two, but can also be three or more.

[0037] The protecting layer 14 in some embodiments can include a first protecting part 141 and a second protecting part 142, covering the two heating layers 13, respectively. In some embodiments, the protecting layer 14 can be formed by glazing glass glaze or a ceramic coating. The protecting layer 14 can reduce the erosion effect of oxygen and impurities on the heating layer 13 so that the service life of the heating layer is prolonged. In some embodiments, a third partition 143 can be arranged on the outer surface of the protecting layer 14, and the shape, size, and position of the third partition 143 correspond to the shape, size, and position of the first partition 113.

[0038] Referring to Figure 6 together, in some embodiments, the substrate 11 in some embodiments can further include a fixing section 114 arranged at the tail end of the substrate 11. The fixing section 114 is integrally connected to the second heating area 112. The fixing section 114 is used to fix and mount the substrate 11. It can be understood that in some other embodiments, the fixing section 114 and the second heating area 112 in the substrate 11 can also be independently made as two parts. Moreover, the fixing section 114 can be made of a material with a small heat capacity and low heat conductivity, for example, PEEK or ceramic material. The second heating area 112 can be made of a material with high heat conductivity so that the heat in the second heating area 112 transferred by the fixing section 114 can be reduced.

[0039] It can be understood that the above embodiments merely express the preferred implementations of the present disclosure. The description is specific and detailed but cannot, therefore, be construed as a limitation to the patent scope of the present disclosure. It is to be pointed out that those of ordinary skill in the art can freely combine the above technical features without departing from the concept of the present disclosure and also can make several variations and improvements. These variations and improvements fall within the protection scope of the present disclosure. Therefore, equivalent substitutions and modifications made within the scope of the claims of the present disclosure shall all fall within the coverage of the claims of the present disclosure.

Claims

1. A heating device, applicable for an aerosol generation device, <b>characterized by comprising: a substrate, comprising at least two heating areas, wherein a first partition for blocking heat transfer is arranged between every two adjacent heating areas; and at least two heating layers, arranged on the at least two heating areas, respectively.

2. The heating device according to claim 1, characterized in that the substrate is tubular-shaped.

3. The heating device according to claim 2, characterized in that the at least two heating areas are distributed in an axial direction of the substrate.

4. The heating device according to claim 3, characterized in that the first partition comprises at least one groove which penetrates through an inner surface and an outer surface of the substrate and extends in a circumferential direction of the substrate.

5. The heating device according to claim 3, characterized in that the first partition comprises a plurality of through holes which penetrate through the inner surface and the outer surface of the substrate and are distributed at an interval in the circumferential direction of the substrate.

6. The heating device according to claim 3, characterized in that the substrateis made of a material that comprises metal or ceramic.

7. The heating device according to claim 6, characterized by further comprising an insulating layer, wherein the insulating layer comprises at least two insulating parts which are arranged on outer surfaces of the at least two heating areas, respectively, and the at least two heating layers are arranged on outer surfaces of the at least two insulating parts, respectively.

8. The heating device according to claim 7, characterized in that a second partition is arranged between every two of the insulating parts, and the second partition corresponds to the first partition.

9. The heating device according to claim 7, characterized by further comprising a protecting layer, wherein the protecting layer comprises at least two protecting parts that cover the at least two heating layers, respectively.

10. The heating device according to claim 9, characterized in that a third partition is arranged between every two of the protecting parts, and the third partition corresponds to the first partition.

11. The heating device according to claim 3, characterized in that the at least two heating layers are arranged on outer sides of the at least two heating areas, respectively.

12. The heating device according to claim 11, characterized by further comprising at least two another heating layers, wherein the at least two another heating layers are disposed on inner sides of the at least two heating areas, respectively.

13. The heating device according to claim 3, characterized in that the at least two heating areas both are tubular-shaped and are integrally connected.

14. The heating device according to claim 1, characterized in that the substrate further comprises a fixing section arranged at an end of the substrate, and the fixing section is integrally connected to the heating areas.

15. The heating device according to claim 1, characterized in that the at least two heating layers comprise resistive film layers and the at least two heating layers are spiral.

16. An aerosol generation device, characterized by comprising the heating device according to any one of claims 1-15.

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