Heating assembly and aerosol-generating device

Abstract

The utility model relates to the technical field of aerosol generation, and provides a heating assembly and an aerosol generation device.The heating assembly comprises a magnetic field generation part and an assembly, and the magnetic field generation part is used for generating a magnetic field after being electrified; an accommodating cavity is formed in the assembly body and is used for accommodating an aerosol substrate; the assembly body is provided with a non-heating area and at least two heating areas; the heating areas are distributed in the axial direction of the containing cavity, and at least parts of the heating areas are arranged in the axial direction of the containing cavity in a staggered mode. An assembly located in the heating zone is used for responding to the magnetic field to magnetically inductively heat the aerosol substrate. According to the application, the heating area and the non-heating area are arranged on the assembly body assembled with the aerosol substrate, the part of substrate section arranged opposite to the heating area is heated, and the part of substrate section arranged opposite to the non-heating area is not heated by the assembly body, so that the assembly body can be prevented from carrying out electromagnetic induction heating on the substrate section of the whole aerosol substrate in the circumferential direction; and the problem of mouth scalding caused by overlarge electromagnetic induction heating area is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generating device. BACKGROUND

[0002] An aerosol generating device is a device capable of heating an aerosol substrate to generate an aerosol. The type of heating assembly in the aerosol generating device can be resistance heating, electromagnetic induction heating, infrared heating, microwave heating, etc. In the technology of electromagnetic induction circumferential heating, the entire heating body heats in the circumferential direction to heat the entire outer wall of the substrate section of the aerosol substrate, which makes the high-temperature heating area of the heating body too large. During the preheating stage, more water vapor is evaporated and roasted, which makes the aerosol smoked by the user contain too much water, resulting in a burning mouth and other bad experiences. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heating assembly and an aerosol generating device, which can solve the problem of excessive roasting area of the electromagnetic induction heating aerosol substrate, resulting in a burning mouth when smoking.

[0004] To solve the above technical problems, the present application provides a heating assembly applied to an aerosol generating device, the heating assembly comprising a magnetic field generating piece and an assembly body, the magnetic field generating piece being used to generate a magnetic field after being electrified; the assembly body forming a containing cavity therein, the containing cavity being used to accommodate an aerosol substrate; the assembly body having at least two heating zones and a non-heating zone; each heating zone being distributed along the axial direction of the containing cavity, and at least part of each heating zone being arranged in a staggered manner in the axial direction of the containing cavity; the assembly body located in the heating zone being used to magnetically induce the aerosol substrate in response to the magnetic field.

[0005] In an embodiment, the assembly body comprises a base body and at least two induction pieces, the base body forming the containing cavity therein, the induction pieces being arranged on the base body and being configured to magnetically induce the aerosol substrate in response to the magnetic field; each induction piece forming at least two heating zones on the base body, and the part of the base body not provided with the induction piece forming the non-heating zone.

[0006] In an embodiment, the at least two induction pieces are configured to be induction pieces with different magnetic permeabilities, so that the heating temperatures of the induction pieces are different.

[0007] In an embodiment, the containing cavity has an opening at one end in the axial direction thereof, the opening being used for inserting the aerosol substrate into the containing cavity; the magnetic permeability of the induction piece close to the opening is greater than that of the induction piece far from the opening.

[0008] In an embodiment, the number of the induction pieces is two, which are a first induction piece arranged close to the opening and a second induction piece arranged far from the opening.

[0009] The heating area of the first induction element is smaller than the heating area of the second induction element, or the height of the first induction element is 40-50% of the height of the base body in the axial direction of the accommodation cavity, or the circumferential length of the first induction element is smaller than the circumferential length of the second induction element.

[0010] In an embodiment, the inner wall of the accommodation cavity is provided with at least two accommodation grooves, at least part of each induction element is arranged in the accommodation grooves, and the radial thickness of the induction element is the same as the depth of the accommodation grooves; and / or the accommodation cavity is cylindrical in shape, and the induction element is arc-shaped.

[0011] In an embodiment, the accommodation cavity has an opening at one end in the axial direction thereof, and the opening is used for inserting the aerosol substrate into the accommodation cavity; each heating zone has a top portion close to the opening and a bottom portion away from the opening; and in the axial direction of the accommodation cavity, the top portions of two adjacent heating zones are arranged in a staggered manner, and the bottom portions of the two adjacent heating zones are arranged in a staggered manner.

[0012] In an embodiment, the projection of each heating zone on a radial projection plane of the accommodation cavity is completely separated, immediately adjacent or partially overlapped, and the radial projection plane is perpendicular to the axis of the accommodation cavity.

[0013] And / or, the projection of each heating zone on a longitudinal projection plane of the accommodation cavity is completely separated, immediately adjacent or partially overlapped, and the longitudinal projection plane is parallel to the axis of the accommodation cavity.

[0014] In an embodiment, each heating zone is completely separated from each other, and at least part of a non-heating zone is arranged between each heating zone.

[0015] To solve the above technical problems, the application provides an aerosol generating device, which comprises the heating assembly of any of the above embodiments.

[0016] The application provides a heating assembly applied to an aerosol generating device, which comprises a magnetic field generating element and an assembly body. The magnetic field generating element is used to generate a magnetic field after being powered on. The assembly body forms an accommodation cavity therein, and the accommodation cavity is used to accommodate an aerosol substrate. The assembly body has at least two heating zones and a non-heating zone. Each heating zone is distributed along the axial direction of the accommodation cavity, and at least part of each heating zone is arranged in a staggered manner in the axial direction of the accommodation cavity. The assembly body located in the heating zone is used to magnetically induce the aerosol substrate in response to the magnetic field. The application sets the heating zone and the non-heating zone on the assembly body assembling the aerosol substrate. The part of the substrate segment arranged opposite to the heating zone is heated, and the part of the substrate segment arranged opposite to the non-heating zone is not heated by the assembly body. Therefore, the assembly body can prevent the electromagnetic induction heating of the entire circumferential direction of the substrate segment of the aerosol substrate, reduce the heating area of the electromagnetic induction, and solve the problem of burning the mouth caused by the excessive heating area of the electromagnetic induction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic view of an aerosol generating device and an aerosol substrate provided by an embodiment of the present application is shown in FIG. 1.

[0018] Figure 2 A cross-sectional view of the aerosol generating device is shown in FIG. 2. Figure 1

[0019] Figure 3 A structure schematic view of a heating assembly and an aerosol substrate provided by an embodiment of the present application is shown in FIG. 3.

[0020] Figure 4 An exploded view of the heating assembly is shown in FIG. 4. Figure 3

[0021] A structure schematic view of an assembly provided by an embodiment of the present application is shown in FIG. 5. Figure 5

[0022] An exploded view of the assembly is shown in FIG. 6. Figure 6 Figure 5 A structure schematic view of the assembly is shown in FIG. 7.

[0023] Figure 7 An expanded schematic view of the assembly is shown in FIG. 8. Figure 5 The reference signs: aerosol substrate 10, heating assembly 20, magnetic field generating member 21, assembly 22, accommodating cavity 221, opening 2211, non-heating area 222, heating area 223, base 224, accommodating groove 2241, inductive member 225, first inductive member 2251, second inductive member 2252, bracket 23, base 24, mounting position 241, air inlet channel 242.

[0024] DETAILED DESCRIPTION The present application will be further described below in conjunction with the drawings. Like reference numerals in different embodiments of the present application denote similar elements. In the following embodiments, many details are described in order to provide a better understanding of the present application. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core of the present application being overwhelmed by too many descriptions, and it is not necessary to describe these related operations in detail for those skilled in the art based on the description in the specification and general technical knowledge in the art.

[0025]

[0026] ​​​In addition, features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments, and the order of the steps involved in each embodiment can be adjusted or modified in a manner apparent to those skilled in the art. Therefore, the description and drawings are only intended to clearly describe one embodiment, and do not mean the necessary composition and / or order.

[0027] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in this application include direct and indirect connections (couplings) unless otherwise specified.

[0028] The terms "parallel", "perpendicular" and the like are defined in relation to the current process level, not the absolute strict definition in the mathematical sense, and a small amount of deviation is allowed, and approximate parallel, approximate perpendicular, etc. are also allowed. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B is between 0° and 10°. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B is between 80° and 100°. The orientation terms mentioned in the embodiments of the application, such as "upper", "inner", "outer", "side" and the like, are only with reference to the direction of the drawings. Therefore, the orientation terms used are to better and more clearly illustrate and understand the embodiments of the application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0029] Please refer to Figures 1-2 The aerosol generating device provided in the present application includes the heating assembly 20 involved in any of the embodiments described below. In addition, the aerosol generating device can also include a housing, a power supply, a controller, an airflow sensor and the like.

[0030] The aerosol generating device is used to heat the aerosol substrate 10 to make the aerosol substrate 10 generate an aerosol. The aerosol substrate 10 is a solid aerosol substrate 10, which usually can include a substrate section and a smoking section. The smoking section can include a smoking substrate, which can generate an aerosol after being heated. The substrate section is usually arranged inside the aerosol generating device to be heated by the aerosol generating device. The smoking section is arranged outside the aerosol generating device and is communicated with the substrate section, so that the aerosol generated by the substrate section can flow to the smoking section to be smoked by the user. In addition, the aerosol substrate 10 can also include a cooling section.

[0031] Please refer to Figure 3 and Figure 4The application also provides a heating assembly 20 which can be applied to an aerosol generating device. The heating assembly 20 comprises a magnetic field generating member 21 and an assembly body 22. The magnetic field generating member 21 is used to generate a magnetic field after being powered on. In a specific embodiment, the magnetic field generating member 21 is a magnetic induction coil which is arranged around the outer periphery of the assembly body 22. The magnetic field generated by the magnetic field generating member 21 can cover the assembly body 22, and part of the structure of the assembly body 22 is made of a material which can respond to the magnetic field and generate heat by magnetic induction.

[0032] Specifically, as shown in Figure 5 and Figure 6 , a receiving cavity 221 is formed in the assembly body 22, and the receiving cavity 221 is used to accommodate the aerosol substrate 10. The receiving cavity 221 has an opening 2211 at one end in the axial direction, and the opening 2211 is used for inserting the aerosol substrate 10 into the receiving cavity 221. The substrate section of the aerosol substrate 10 is inserted into the receiving cavity 221 through the opening 2211, and the smoking section of the aerosol substrate 10 is located outside the aerosol generating device. Preferably, the assembly body 22 is tubular, and the receiving cavity 221 is in the shape of a cylinder to adapt to the cylindrical aerosol substrate 10.

[0033] The assembly body 22 has a non-heating area 222 and at least two heating areas 223. Specifically, the assembly body 22 has an annular side wall, and the annular side wall of the assembly body 22 is provided with the non-heating area 222 and the at least two heating areas 223. The assembly body 22 located in the heating area 223 is used to respond to the magnetic field to magnetically induce the heating of the aerosol substrate 10. Preferably, the number of magnetic induction coils in the application is one, and the axial length of the magnetic induction coil is substantially the same as the axial length of the assembly body 22 to cover each heating area 223 on the assembly body 22. The assembly body 22 located in the non-heating area 222 cannot respond to the magnetic field, that is, the assembly body 22 in the non-heating area 222 cannot magnetically induce the heating of the aerosol substrate 10. Preferably, the assembly body 22 located in the heating area 223 comprises a material with high magnetic permeability, such as a ferromagnetic material, while the assembly body 22 in the non-heating area 222 is made of a material with low magnetic permeability, such as ceramic and the like. Further, the material of the assembly body 22 in the non-heating area 222 is a material with low thermal conductivity to prevent heat transfer from the heating area 223 to the non-heating area 222.

[0034] By arranging the heating area 223 and the non-heating area 222 on the assembly body 22 which assembles the aerosol substrate 10, the part of the substrate section arranged opposite to the heating area 223 is heated by the assembly body 22, and the part of the substrate section arranged opposite to the non-heating area 222 is not heated by the assembly body 22. Therefore, the assembly body 22 only electromagnetically induces the heating of part of the circumference of the substrate section, which can prevent the assembly body 22 from electromagnetically inducing the heating of the entire circumference of the substrate section of the aerosol substrate 10, reduce the electromagnetic induction heating area of the aerosol substrate 10, and solve the problem of burning mouth caused by the excessive electromagnetic induction heating area.

[0035] In an embodiment, each heating zone 223 is arranged in sequence along the axial direction of the accommodation cavity 221, i.e. in sequence from top to bottom in the unfolded view of the assembly 22. Figure 7 In the unfolded view of the assembly 22, each heating zone 223 is arranged in sequence from top to bottom, and at least part of each heating zone 223 is arranged in sequence in the axial direction of the accommodation cavity 221. Preferably, part of the heating zones 223 are arranged close to one side of the opening 2211, and part of the heating zones 223 are arranged away from the other side of the opening 2211, so that the assembly 22 can be heated more uniformly in the axial direction.

[0036] Specifically, each heating zone 223 has a top portion close to the opening 2211 and a bottom portion away from the opening 2211, where the top portion and the bottom portion refer to the end points of the heating zone 223. At least part of each heating zone 223 is arranged in sequence in the axial direction of the accommodation cavity 221, i.e. in the axial direction of the accommodation cavity 221, the top portions of two adjacent heating zones 223 are arranged in sequence, the bottom portions of two adjacent heating zones 223 are arranged in sequence, and the top portion of the heating zone 223 closer to the opening 2211 is higher than the top portion of the heating zone 223 farther away from the opening 2211, and the bottom portion of the heating zone 223 closer to the opening 2211 is higher than the bottom portion of the heating zone 223 farther away from the opening 2211.

[0037] Specifically, in an embodiment, as shown in Figures 5-7 The assembly 22 includes a base body 224 and at least two induction pieces 225. The accommodation cavity 221 is formed in the base body 224, and the induction pieces 225 are arranged on the side wall of the base body 224. Preferably, the accommodation cavity 221 is in the shape of a cylinder, and the induction pieces 225 are in the shape of arc pieces. The induction pieces 225 are configured to respond to a magnetic field to magnetically induce heating of the material of the aerosol substrate 10. The base body 224 is configured to be a material that cannot respond to a magnetic field to generate heat. Each induction piece 225 is arranged on the base body 224 to form at least two heating zones 223 on the base body 224, respectively. The number of induction pieces 225 can be less than or equal to the number of heating zones 223, and the part of the base body 224 without an induction piece 225 arranged thereon forms a non-heating zone 222. By arranging the induction pieces 225 on the base body 224, each heating zone 223 and non-heating zone 222 can be formed on the assembly 22, and the assembly and processing process is simple, facilitating mass production and cost control.

[0038] Further, in an embodiment, as shown in Figure 6As shown, the inner wall of the accommodating cavity 221 is provided with at least two accommodating grooves 2241, and at least part of each inductive piece 225 is arranged in the accommodating groove 2241. The shape of the accommodating groove 2241 can match the shape of the inductive piece 225. The radial thickness of the inductive piece 225 is greater than or equal to the depth of the accommodating groove 2241, and preferably, the radial thickness of the inductive piece 225 is the same as the depth of the accommodating groove 2241, so that the surface of the inductive piece 225 close to the central axis of the accommodating cavity 221 is flush with the opening 2211 of the accommodating groove 2241, so that the inner wall of the assembly body 22 is relatively flat, facilitating the insertion of the aerosol substrate 10.

[0039] In an embodiment, the at least two inductive pieces 225 are configured as inductive pieces 225 with different magnetic permeabilities, so that the heating temperatures of the inductive pieces 225 are different. Since at least part of each heating zone 223 of the present application is arranged in the axial direction of the accommodating cavity 221, that is, the magnetic permeability of the assembly body 22 in the axial direction is different, the heating temperature of the assembly body 22 in the axial direction is different, so that the assembly body 22 can perform multi-stage heating on the aerosol substrate 10 in the axial direction. Preferably, the magnetic permeability of the inductive piece 225 close to the opening 2211 is greater than that of the inductive piece 225 far from the opening 2211, so that the heating temperature of the inductive piece 225 close to the opening 2211 is higher than that of the inductive piece 225 far from the opening 2211, ensuring that the user can stably smoke the aerosol when smoking for the first time, and the inductive piece 225 far from the opening 2211 can ensure the continuation of smoking in the middle and later stages of smoking.

[0040] In an embodiment, as shown in the accompanying drawings, Figures 5-7 The number of inductive pieces 225 is two, which are a first inductive piece 2251 close to the opening 2211 and a second inductive piece 2252 far from the opening 2211. The magnetic permeability of the first inductive piece 2251 is greater than that of the second inductive piece 2252, for example, the material of the first inductive piece 2251 can be spce material or 45 steel, and the material of the second inductive piece 2252 can be 316 stainless steel. Further, the heating area of the first inductive piece 2251 is smaller than that of the second inductive piece 2252, so as to prevent the first inductive piece 2251 with higher temperature from burning the aerosol substrate 10.

[0041] In one embodiment, the heating area of ​​the two sensors 225 can be adjusted by adjusting the dimensions of the sensors 225. For example, in the axial direction of the accommodating cavity 221, the height of the first sensor 2251 is 40%-50% of the height of the base 224, while the height of the second sensor 2252 is 50%-60% of the height of the base 224, so that the heating area of ​​the first sensor 2251 is smaller than that of the second sensor 2252. Alternatively, the circumferential length of the first sensor 2251 can be smaller than the circumferential length of the second sensor 2252, so that the heating area of ​​the first sensor 2251 is smaller than that of the second sensor 2252.

[0042] like Figures 5-7 As shown, in one embodiment, the projections of each heating zone 223 onto the radial projection plane of the accommodating cavity 221 are completely spaced apart, adjacent, or partially overlapping, wherein the radial projection plane is perpendicular to the axis of the accommodating cavity 221. That is, the heating zones 223 can be completely staggered, adjacent, or partially staggered in the circumferential direction to make the heating of the aerosol matrix 10 by the assembly 22 more uniform in the circumferential direction.

[0043] In one embodiment, the projections of the heating zones 223 onto the longitudinal projection plane of the accommodating cavity 221 are completely spaced apart, adjacent, or partially overlapping, and the longitudinal projection plane is parallel to the axis of the accommodating cavity 221. That is, the heating zones 223 can be completely staggered, adjacent, or partially staggered in the axial direction to make the heating of the aerosol matrix 10 by the assembly 22 more uniform in the axial direction. Preferably, as shown... Figure 7 As shown, each heating zone 223 is completely staggered in both the circumferential and axial directions to ensure that the assembly 22 has a certain degree of heating uniformity in both the circumferential and axial directions.

[0044] In one embodiment, the heating zones 223 are completely spaced apart, and at least a portion of the non-heating zones 222 are provided between the heating zones 223. By spaced apart the heating zones 223, the heating independence of each heating zone 223 can be guaranteed, and the temperature of the heating zones 223 can be prevented from affecting each other.

[0045] Please refer to Figures 2-4The heating assembly 20 can further include a bracket 23 and a base 24, wherein the base 24 is provided with a mounting position 241 and an air inlet channel 242 in communication, the mounting position 241 can be used to assemble the aerosol substrate 10 away from one end of the suction section, and the air inlet channel 242 is in communication with the outside atmosphere and the mounting position 241, so that when the user inhales, the airflow can enter the inside of the aerosol substrate 10 from the bottom surface of the aerosol substrate 10 through the air inlet channel 242. The assembly body 22 is arranged at one end of the base 24 close to the opening 2211, when the aerosol substrate 10 is mounted in the mounting position 241, the assembly body 22 is sleeved on the outer periphery of the substrate section of the aerosol substrate 10. The bracket 23 is sleeved on the outer periphery of the assembly body 22, the magnetic induction coil is sleeved on the outer side surface of the bracket 23, and one end of the bracket 23 close to the opening 2211 can be used to clamp the aerosol substrate 10, and one end of the bracket 23 away from the opening 2211 is arranged on the base 24.

[0046] The above application of specific examples to illustrate the present application, is only used to help understand the present application, and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformation or replacement can be made.

Claims

1. A heating assembly for an aerosol-generating device, the heating assembly comprising: The heating assembly comprises: a magnetic field generating component for generating a magnetic field after being energized; and an assembly body in which a receiving cavity is formed for accommodating an aerosol substrate; the assembly body has a non-heating area and at least two heating areas, each of the heating areas is distributed along the axial direction of the receiving cavity, and at least part of each of the heating areas is arranged in a staggered manner in the axial direction of the receiving cavity; the assembly body at the heating areas is used to magnetically induce heating of the aerosol substrate in response to the magnetic field.

2. The heating assembly of claim 1, wherein, The assembly body comprises a base body in which the receiving cavity is formed, and at least two induction components arranged on the base body, the induction components are configured to magnetically induce heating of the aerosol substrate in response to the magnetic field; each of the induction components forms at least two of the heating areas on the base body, and the part of the base body where the induction components are not arranged forms the non-heating area.

3. The heating assembly of claim 2, wherein, The at least two induction components are configured to be induction components with different magnetic permeabilities, so that the heating temperatures of the induction components are different.

4. The heating assembly of claim 3, wherein, The receiving cavity has an opening at one end of its axial direction, and the opening is used for inserting the aerosol substrate into the receiving cavity; the magnetic permeability of the induction component close to the opening is greater than that of the induction component away from the opening.

5. The heating assembly of claim 4, wherein, The number of the induction components is two, which are a first induction component arranged close to the opening and a second induction component arranged away from the opening; The heating area of the first induction component is smaller than that of the second induction component; or, in the axial direction of the receiving cavity, the height of the first induction component is 40%-50% of the height of the base body; or, the circumferential length of the first induction component is smaller than that of the second induction component.

6. The heating assembly of claim 2, wherein, The inner wall of the receiving cavity is provided with at least two receiving grooves, at least part of each of the induction components is arranged in the receiving grooves, the radial thickness of the induction component is the same as the depth of the receiving groove; and / or, the shape of the receiving cavity is cylindrical, and the shape of the induction component is arc-shaped.

7. The heating assembly of claim 1, wherein, The receiving cavity has an opening at one end of its axial direction, and the opening is used for inserting the aerosol substrate into the receiving cavity; each of the heating areas has a top portion close to the opening and a bottom portion away from the opening; in the axial direction of the receiving cavity, the top portions of two adjacent heating areas are arranged in a staggered manner, and the bottom portions of two adjacent heating areas are arranged in a staggered manner.

8. The heating assembly of claim 1, wherein, The projection of each of the heating areas on the radial projection plane of the receiving cavity is completely separated, immediately adjacent or partially overlapped, and the radial projection plane is perpendicular to the axis of the receiving cavity; and / or, the projection of each of the heating areas on the longitudinal projection plane of the receiving cavity is completely separated, immediately adjacent or partially overlapped, and the longitudinal projection plane is parallel to the axis of the receiving cavity.

9. The heating assembly of claim 1, wherein, Each of the heating areas is completely separated, and at least part of the non-heating area is arranged between each of the heating areas.

10. An aerosol-generating device comprising: The heating assembly comprises any one of claims 1-9.

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