Heating assembly and aerosol generating device

Abstract

The application relates to the aerosol production technical field, and provides a heating assembly and an aerosol production device. The heating assembly comprises a base, a magnetic induction heating assembly and a resistance heating element. The base is internally provided with a containing cavity, and one end of the containing cavity is provided with a socket. The magnetic induction heating assembly comprises a magnetic field generator and an induction body. The magnetic field generator is arranged on the outer side of the base at intervals. The induction body is mounted on the base. The induction body is used for generating heat in response to the magnetic field generated by the magnetic field generator. The resistance heating element is mounted on the base. The resistance heating element is used for generating heat after being electrified, so as to heat an aerosol substrate. At least part of the induction body is arranged close to the socket relative to the resistance heating element. The induction body of the application can be rapidly heated in the preheating stage, so that the aerosol substrate close to the socket can be rapidly heated, thereby rapidly reaching the heating temperature required for the first puffing in the preheating stage. The preheating time of the aerosol production device is greatly shortened, and the use experience of the user is improved.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to a heating component and an aerosol generation device. Background Technology

[0002] An aerosol generating device is a device capable of generating aerosols. By inserting an aerosol matrix into the heating element of the aerosol generating device, the heating element heats the aerosol matrix to generate aerosols for the user to inhale.

[0003] Currently, heating components heat aerosol matrices via resistance heating, such as by printing a resistance heating film onto a substrate. When energized, the film generates heat, which is then transferred to the aerosol matrix within the substrate, thus heating the aerosol matrix. However, the resistance of the resistance heating film is relatively high, and it is difficult to reduce this resistance, resulting in a slow heating rate and a long preheating time for the aerosol generation device. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device, which can solve the problem of long preheating time in aerosol generating devices.

[0005] To address the aforementioned technical problems, this application provides a heating assembly comprising a substrate, a magnetic induction heating assembly, and a resistance heating element. The substrate has a receiving cavity, one end of which has a socket for inserting an aerosol matrix into the receiving cavity. The magnetic induction heating assembly includes a magnetic field generator and an inductor. The magnetic field generator is spaced apart on the outer side of the substrate, and the inductor is mounted on the substrate. The inductor generates heat in response to the magnetic field generated by the magnetic field generator to heat the aerosol matrix. The resistance heating element is mounted on the substrate and generates heat upon energization to heat the aerosol matrix. At least a portion of the inductor is positioned close to the socket relative to the resistance heating element.

[0006] In one embodiment, the sidewalls of the substrate enclose a cavity, and the inductor is embedded in the sidewalls of the substrate; the resistive heating element is disposed on the outer surface of the sidewalls of the substrate.

[0007] In one embodiment, the projection portion of the inductor and the resistive heating element onto the axial cross-section of the substrate coincides.

[0008] In one embodiment, the inductor and the resistive heating element are offset from each other in the circumferential direction of the substrate.

[0009] In one embodiment, the substrate is a tubular structure, the magnetic field generator includes a magnetic induction coil, the inductor is arc-shaped, and the resistive heating element is a heating sheet, a heating film, or a heating mesh.

[0010] In one embodiment, the resistive heating element includes a heating circuit and at least two electrodes. The heating circuit includes at least two straight sections and at least one curved section. Adjacent straight sections are connected through the curved section, and the at least two electrodes are connected to the heating circuit.

[0011] To address the aforementioned technical problems, this application provides an aerosol generating device, which includes a support assembly and a heating assembly. The heating assembly is mounted on the support assembly, and the heating assembly is the heating assembly involved in any of the above embodiments.

[0012] In one embodiment, the support assembly includes a tube assembly and a base. The tube assembly has a mounting cavity, the base is connected to one end of the mounting cavity, the heating assembly is disposed in the mounting cavity, one end of the base abuts against the base, and the other end of the base abuts against the end of the tube assembly away from the base.

[0013] In one embodiment, the tube assembly includes an inner tube and an outer tube, with the outer tube sleeved around the outer periphery of the inner tube, and an installation cavity formed inside the inner tube; a magnetic field generator is disposed between the inner tube and the outer tube.

[0014] In one embodiment, the tube assembly has an air intake channel, which is spaced apart on the outside of the mounting cavity. The base is provided with an air intake hole that communicates with the receiving cavity. One end of the air intake channel is connected to the air intake hole, and the other end of the air intake channel is connected to the outside atmosphere.

[0015] This application provides a heating assembly and an aerosol generating device. The heating assembly includes a substrate, a magnetic induction heating assembly, and a resistance heating element. The substrate has a receiving cavity with a socket at one end for inserting an aerosol matrix into the cavity. The magnetic induction heating assembly includes a magnetic field generator and an inductor. The magnetic field generator is spaced apart on the outside of the substrate, and the inductor is mounted on the substrate. The inductor generates heat in response to the magnetic field generated by the magnetic field generator to heat the aerosol matrix. The resistance heating element is mounted on the substrate and generates heat upon energization to heat the aerosol matrix. At least a portion of the inductor is positioned close to the socket relative to the resistance heating element. Because the substrate of this application is provided with an inductor and a resistance heating element, and because the heating rate of electromagnetic induction is significantly faster than that of resistance heating, and at least part of the inductor is positioned close to the socket relative to the resistance heating element, the inductor can heat up rapidly during the preheating stage, causing the aerosol matrix near the socket to heat up rapidly, thereby quickly reaching the heating temperature required for the first suction in the preheating stage. Compared with resistance heating alone, this application greatly shortens the preheating time of the aerosol generating device and improves the user experience by combining electromagnetic induction heating and resistance heating and positioning the inductor close to the socket. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a heating assembly provided in one embodiment of this application;

[0017] Figure 2 An exploded view of a heating assembly provided in an embodiment of this application;

[0018] Figure 3 A cross-sectional view of a heating assembly provided in an embodiment of this application;

[0019] Figure 4 A schematic diagram of the structure of an aerosol generating device and an aerosol matrix provided in an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the structure of the support assembly and heating assembly provided in one embodiment of this application;

[0021] Figure 6 This is a cross-sectional view of a support assembly and a heating assembly provided in an embodiment of this application.

[0022] Reference numerals: base 10, accommodating cavity 11, socket 111, resistance heating element 20, magnetic field generator 30, inductor 40, tube assembly 50, mounting cavity 51, inner tube 52, outer tube 53, air inlet channel 54, base 60, air inlet 61, outer shell 70. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0024] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0026] The terms "parallel" and "perpendicular," etc., are specific to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between A and B ranging from 0° to 10°. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between A and B ranging from 80° to 100°. The directional terms used in the embodiments of this application, such as "upper," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0027] Please refer to Figure 1-3 This application provides a heating assembly, which includes a substrate 10, a magnetic induction heating assembly, and a resistance heating element 20. The substrate 10 has a receiving cavity 11, one end of which has a socket 111 for inserting an aerosol matrix into the receiving cavity 11. The end of the receiving cavity 11 away from the socket 111 can be either a closed end or an open end, adaptable to the airflow direction.

[0028] In some embodiments, the substrate 10 may be a tubular structure, for example, a cylindrical tube, an elliptical tube, or a quasi-elliptical tube. The radial cross-section of the accommodating cavity 11 is circular, elliptical, or quasi-elliptical. Since the tubular structure has definite radial, axial, and circumferential directions, the radial, axial, and circumferential directions described in this application can all refer to the directions of the substrate 10 of the tubular structure.

[0029] The substrate 10 can be configured as an insulating substrate, or the substrate 10 itself can be made of a conductive substrate, but an insulating layer needs to be provided on the outer surface of the conductive substrate. The substrate 10 also needs to be made of a material with high thermal conductivity, for example, the thermal conductivity of the substrate 10 needs to be greater than 50 W / (m·K) to facilitate rapid heat transfer to the aerosol matrix, such as a ceramic substrate.

[0030] The aerosol matrix includes at least a matrix segment, which is used to generate aerosols upon heating. In one embodiment, the aerosol matrix further includes an encapsulation layer surrounding the matrix segment. The matrix segment is primarily composed of tobacco, herbal or plant leaves, or medicinal materials. It is understood that the materials forming the matrix segment are not limited; the matrix segment can be formed from a single material or from a mixture of multiple materials in different proportions.

[0031] The coating layer can be formed of a coating material such as paper, thereby maintaining the shape of the matrix segment. The material forming the coating layer is not limited to this; in other embodiments, the coating layer can also be formed of other materials such as aluminum foil to meet different requirements. In one embodiment, the aerosol matrix further includes a nozzle segment, a cooling segment, and a sealing segment, which are arranged sequentially along the axis of the matrix segment. The nozzle segment primarily functions as a filter, through which the user inhales the aerosol. The nozzle segment may contain a filter medium that filters tar, suspended particles, etc., from the aerosol, thereby reducing unwanted substances in the aerosol inhaled by the user. The filter medium can be, for example, a polylactic acid filament tow or a cellulose acetate filament tow. The main function of the cooling segment is to lower the temperature of the aerosol to prevent burns to the mouth. The cooling segment has a cooling channel, and the inner wall of the cooling channel has cooling holes communicating with the outside of the cooling segment. After being generated in the matrix section, the aerosol flows through the cooling channel and finally exits from the nozzle section for the user to inhale. As the aerosol passes through the cooling channel, cold air can enter the cooling channel through the cooling holes under negative pressure to mix with the aerosol and lower its temperature.

[0032] The cooling section can be made of one of the following materials: polylactic acid / aluminum foil composite film, paper filter rod, polylactic acid nonwoven fabric, polylactic acid granules, polylactic acid filament braided tube, serrated polylactic acid folded film, cellulose acetate, or cooling activated carbon composite material. The sealing section is located at the end of the aerosol matrix and provides a physical support base to prevent matrix particles or materials from loosening or falling off during heating, maintaining the integrity of the aerosol matrix and avoiding leakage due to thermal expansion or movement of the matrix section, thus affecting the user experience. Furthermore, if condensate is generated in the cooling section or matrix section, the fiber structure of the sealing section can prevent the liquid from flowing out of the aerosol matrix. The sealing section can also control airflow resistance through fiber density to ensure smooth suction. The sealing section can be made of materials such as polypropylene fiber, polyester fiber, cotton, or cellulose acetate. In other embodiments, the aerosol matrix may not have at least one of the cooling section, sealing section, or nozzle section, or it may have other functional sections, which will not be elaborated here.

[0033] The magnetic induction heating assembly includes a magnetic field generator 30 and an inductor 40. The magnetic field generator 30 can generate an alternating magnetic field; for example, the magnetic field generator 30 can be a magnetic induction coil. The inductor 40 generates heat in response to the magnetic field generated by the magnetic field generator 30. Typically, the inductor can be a conductor, which can respond to the alternating magnetic field and generate eddy currents within the conductor. For example, it can be made of materials such as metals, alloys, or non-metallic conductors. Alternatively, the inductor can also be a ferromagnetic material, such as pure iron, ferrite, or soft magnetic alloys. The inductor can also be made of other materials, not limited to those mentioned above. Since the substrate 10 can be configured as a tube, the inductor 40 can also be configured as an arc-shaped or ring-shaped structure to adapt to the structure of the substrate 10.

[0034] Magnetic field generators 30 are spaced apart on the outer side of the substrate 10. The outer and inner sides of the substrate 10 are relative to the accommodating cavity 11 of the substrate 10; the inner side of the substrate 10 is located within the accommodating cavity 11, while the outer side of the substrate 10 is located outside the accommodating cavity 11 and spaced apart from it. Specifically, in some embodiments, the sidewall of the substrate 10 is an annular sidewall, which encloses the accommodating cavity 11, and the magnetic field generators 30 are spaced apart on the outer sidewall of the substrate 10. When the magnetic field generator 30 is a magnetic induction coil, it is arranged circumferentially on the outer sidewall of the substrate 10.

[0035] The sensor 40 is mounted on the substrate 10. The sensor 40 generates heat in response to an alternating magnetic field. This heat is conducted through the substrate 10 to the aerosol matrix inside the substrate 10, thus heating the aerosol matrix. The method by which the sensor 40 is mounted on the substrate 10 is not limited; for example, it can be mounted by snap-fit, adhesive, embedding, interference fit, etc. In some embodiments, such as... Figure 3 As shown, the sensor 40 is embedded in the sidewall of the substrate 10, meaning the sensor 40 is completely located within the sidewall of the substrate 10, and the surface of the sensor 40 is spaced apart from the surface of the sidewall of the substrate 10. This allows the sensor 40 to be closer to the aerosol matrix, facilitating faster heat transfer to the aerosol matrix, while preventing direct contact between the sensor 40 and the aerosol matrix, thus avoiding scorching the outer coating layer of the aerosol matrix. In some other embodiments, the surface of the substrate 10 may have a mounting groove, and the sensor 40 may be mounted within the mounting groove.

[0036] The resistive heating element 20 is mounted on the substrate 10. The resistive heating element 20 generates heat after being energized. This heat is conducted through the substrate 10 to the aerosol matrix inside the substrate 10, thus heating the aerosol matrix. In other words, the resistive heating element 20 heats the aerosol matrix through resistive heating. The resistive heating element 20 can be in the form of a heating plate, heating film, heating wire, or heating mesh, etc. The resistive heating element 20 can be mounted on the substrate 10 using processes such as bonding, snap-fitting, deposition, printing, or coating. Generally, the resistive heating element 20 is made of metal.

[0037] At least a portion of the inductor 40 is disposed relative to the resistive heating element 20 near the socket 111. The entire inductor 40 may be disposed relative to the resistive heating element 20 near the socket 111, or a portion of the inductor 40 may be disposed relative to the resistive heating element 20 near the socket 111.

[0038] Since the substrate 10 of this application is provided with an inductor 40 and a resistance heating element 20, and since the heating rate of electromagnetic induction is significantly faster than that of resistance heating, and at least a portion of the inductor 40 is positioned close to the socket 111 relative to the resistance heating element 20, the inductor 40 can heat up rapidly during the preheating stage, causing the aerosol matrix near the socket 111 to heat up rapidly, thereby quickly reaching the heating temperature required for the first suction in the preheating stage. Compared with resistance heating alone, this application greatly shortens the preheating time of the aerosol generating device by combining electromagnetic induction heating and resistance heating, and by positioning the inductor close to the socket 111, thus improving the user experience.

[0039] During use, the magnetic field generator 30 can be powered on during the preheating stage to rapidly heat the inductor 40. The inductor 40 quickly reaches the target temperature to heat the top of the substrate section, thereby quickly generating the aerosol required for the first suction. After several suctions (e.g., after three suctions), the resistance heating element 20 is powered on. The coil can be powered off synchronously or after a period of time, and the resistance heating element 20 provides heat for subsequent suction.

[0040] In one embodiment, such as Figure 1-3 As shown, the resistive heating element 20 is disposed on the outer surface of the sidewall of the substrate 10 to prevent the resistive heating element 20 from directly contacting the outer surface of the aerosol matrix and scorching the aerosol matrix. Of course, in some embodiments, the resistive heating element 20 may also be disposed on the inner surface of the substrate 10.

[0041] In one embodiment, the projections of the inductor 40 and the resistive heating element 20 onto the axial cross-section of the substrate 10 coincide. The axial cross-section is a cross-section perpendicular to the radial direction, so that there is no gap between the inductor 40 and the resistive heating element 20 in the axial direction, allowing them to cover the entire substrate segment in the axial direction and preventing some areas of the substrate segment from being too cold in the axial direction.

[0042] In one embodiment, the inductor 40 and the resistive heating element 20 are offset in the circumferential direction of the substrate 10, so that the inductor 40 and the resistive heating element 20 can cooperate to heat the substrate segment as a whole in the circumferential direction.

[0043] In one embodiment, the resistive heating element 20 includes a heating line and at least two electrodes. The heating line includes at least two straight portions and at least one curved portion. Adjacent straight portions are connected by the curved portion. At least two electrodes are connected to the heating line. By configuring the heating line to have straight portions and curved portions, the heating line can bend and extend to cover more of the surface of the substrate 10, thereby heating a larger area of ​​the aerosol matrix.

[0044] like Figure 4-6 As shown, this application provides an aerosol generating device, which includes a support assembly and a heating assembly. Furthermore, the aerosol generating device may also include a housing 70, a power supply, and a controller. The support assembly, heating assembly, power supply, and controller are all installed within the housing 70. The heating assembly is mounted on the support assembly, the power supply provides power to the heating assembly, and the controller controls the heating of the heating assembly.

[0045] In one embodiment, such as Figure 5 and Figure 6 As shown, the support assembly includes a tube assembly 50 and a base 60. The tube assembly 50 has an installation cavity 51. The base 60 is connected to one end of the installation cavity 51. The heating component is located in the installation cavity 51. One end of the base 10 abuts against the base 60, and the other end of the base 10 abuts against the end of the tube assembly 50 away from the base 60.

[0046] Furthermore, the tube assembly 50 includes an inner tube 52 and an outer tube 53. The outer tube 53 is sleeved around the outer periphery of the inner tube 52, and an installation cavity 51 is formed inside the inner tube 52. The magnetic field generator 30 is disposed between the inner tube 52 and the outer tube 53. For example, a groove may be provided on the side wall of the inner tube 52, and the magnetic field generator 30 may be assembled in the groove. Of course, the magnetic field generator 30 may also be disposed on the outer tube 53, or the magnetic field generator 30 may also be disposed on the outer side wall of the outer tube 53.

[0047] In one embodiment, the tube assembly 50 has an air inlet channel 54, which is spaced apart on the outside of the mounting cavity 51. The base 60 is provided with an air inlet hole 61 that communicates with the accommodating cavity 11. One end of the air inlet channel 54 is connected to the air inlet hole 61, and the other end of the air inlet channel 54 is connected to the outside atmosphere. The air inlet channel 54 is arranged around the outer periphery of the heating component, that is, the aerosol generating device is top air inlet, with a short air inlet path and low suction resistance. If the heat from the heating component flows to the air inlet channel 54, it can also preheat the gas in the air inlet channel 54, so that the aerosol generating device can also have the form of hot airflow heating the aerosol matrix, thereby making the radial heat of the aerosol matrix more uniform.

[0048] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heating assembly, characterized in that, include: The matrix has a receiving cavity, one end of which has an insertion port for inserting an aerosol matrix into the receiving cavity; A magnetic induction heating assembly includes a magnetic field generator and an inductor. The magnetic field generator is spaced apart on the outside of the substrate, and the inductor is mounted on the substrate. The inductor generates heat in response to the magnetic field generated by the magnetic field generator to heat the aerosol matrix. The sensor includes a resistive heating element mounted on the substrate, which generates heat upon energization to heat the aerosol matrix; at least a portion of the sensor is disposed near the socket relative to the resistive heating element.

2. The heating assembly according to claim 1, characterized in that, The sidewalls of the substrate enclose the accommodating cavity, and the inductor is embedded in the sidewalls of the substrate; the resistive heating element is disposed on the outer surface of the sidewalls of the substrate.

3. The heating assembly according to claim 1, characterized in that, The projection of the inductor and the resistive heating element onto the axial cross-section of the substrate coincides.

4. The heating assembly according to claim 1, characterized in that, The inductor and the resistive heating element are offset from each other in the circumferential direction of the substrate.

5. The heating assembly according to any one of claims 1-4, characterized in that, The substrate is a tubular structure, the magnetic field generator includes a magnetic induction coil, the inductor is arc-shaped, and the resistive heating element is a heating sheet, a heating film, or a heating mesh.

6. The heating assembly according to claim 1, characterized in that, The resistive heating element includes a heating circuit and at least two electrodes. The heating circuit includes at least two straight sections and at least one curved section. Adjacent straight sections are connected through the curved section, and at least two electrodes are connected to the heating circuit.

7. An aerosol generating device, characterized in that, include: Support assembly; And a heating component, which is mounted on the bracket assembly, wherein the heating component is the heating component as described in any one of claims 1-6.

8. The aerosol generating apparatus according to claim 7, characterized in that, The support assembly includes a tube assembly and a base. The tube assembly has an installation cavity. The base is connected to one end of the installation cavity. The heating assembly is disposed in the installation cavity. One end of the base abuts against the base, and the other end of the base abuts against the end of the tube assembly away from the base.

9. The aerosol generating apparatus according to claim 8, characterized in that, The tube assembly includes an inner tube and an outer tube, the outer tube being sleeved around the outer periphery of the inner tube, and the mounting cavity being formed inside the inner tube; the magnetic field generator is disposed between the inner tube and the outer tube.

10. The aerosol generating apparatus according to claim 8, characterized in that, The tube assembly has an air intake channel, which is spaced apart on the outside of the mounting cavity. The base is provided with an air intake hole that communicates with the accommodating cavity. One end of the air intake channel communicates with the air intake hole, and the other end of the air intake channel communicates with the outside atmosphere.

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