Heating assembly and aerosol generating device

Abstract

This application relates to the field of aerosol generation technology, and provides a heating component and an aerosol generating device. The heating component, applied to the aerosol generating device, includes a heating tube and a heating wire. The heating tube includes a sidewall, with a receiving cavity surrounding the sidewall. One end of the receiving cavity has a socket for inserting an aerosol matrix into the receiving cavity. The heating wire is embedded in the sidewall and surrounds the outer periphery of the receiving cavity. The heating wire includes dense sections and loose sections arranged sequentially along the axial direction of the receiving cavity. The dense sections are more tightly arranged than the loose sections, and the dense sections are closer to the socket than the loose sections. Because the heating tube of this application generates heat by embedding the heating wire, the heating wire itself has a stable, pre-formed shape. Compared to the method of printing heating circuits, there is no problem of unevenness in various places, resulting in strong heating stability and improved consistency of the heating component.

Description

Technical Field

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

[0002] An aerosol generating device is a device that heats an aerosol matrix to generate aerosols. Typically, an aerosol generating device has a heating chamber, which is heated by inserting the aerosol matrix into the heating chamber, with the inner wall of the chamber in thermally conductive contact with the aerosol matrix.

[0003] Current heating chambers are typically formed by heating tubes with heating circuits printed on their outer walls. When the heating circuits are energized, they generate heat, which can be conducted through the heating tubes to the aerosol matrix inside the heating chamber. However, the method of printing heating circuits is prone to uneven printing, resulting in poor heating stability and poor consistency of the heating components. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device that can solve the problems of poor heating stability and poor consistency of the heating component.

[0005] To address the aforementioned technical problems, this application provides a heating assembly applied to an aerosol generating device. The heating assembly includes a heating tube and a heating wire. The heating tube includes a sidewall, with a receiving cavity surrounding the sidewall. One end of the receiving cavity has a socket for inserting an aerosol matrix into the receiving cavity. The heating wire is embedded in the sidewall and surrounds the outer periphery of the receiving cavity. The heating wire includes a dense section and a loose section arranged sequentially along the axial direction of the receiving cavity. The dense section is more tightly surrounded than the loose section, and the dense section is closer to the socket than the loose section.

[0006] In one embodiment, the heating wire is spirally wound around the outer periphery of the receiving cavity, with the pitch of the dense section being smaller than that of the loose section.

[0007] In one embodiment, the dense segment is connected to the loose segment, and the axial length of the dense segment is less than the axial length of the loose segment.

[0008] In one embodiment, the dense section is a first spiral coil, the loose section is a second spiral coil, and the first spiral coil and the second spiral coil are disconnected.

[0009] In one embodiment, at least one of the dense and loose sections includes a plurality of coils arranged axially along the receiving cavity and not connected to each other.

[0010] In one embodiment, the inner diameter of the receiving cavity along the first direction is smaller than the inner diameter along the second direction, and both the first and second directions are perpendicular to the axial direction of the receiving cavity.

[0011] In one embodiment, the radial cross-section of the receiving cavity is elliptical.

[0012] In one embodiment, the radial cross-section of the receiving cavity is consistent at all points in its axial direction.

[0013] In one embodiment, an installation cavity is embedded in the side wall, the installation cavity surrounds the receiving cavity and is spaced apart from the receiving cavity, the shape of the installation cavity is consistent with the shape of the heating wire, and the heating wire is disposed in the installation cavity.

[0014] To address the aforementioned technical problems, this application provides an aerosol generating device, which includes the heating component mentioned in any of the above claims.

[0015] This application provides a heating component and an aerosol generating device. The heating component, used in the aerosol generating device, includes a heating tube and a heating wire. The heating tube includes a sidewall with a receiving cavity inside. One end of the receiving cavity has a socket for inserting an aerosol matrix into the receiving cavity. The heating wire is embedded in the sidewall and surrounds the outer periphery of the receiving cavity. The heating wire includes dense sections and loose sections arranged sequentially along the axial direction of the receiving cavity. The dense sections are more tightly arranged than the loose sections and are closer to the socket than the loose sections. Because the heating tube of this application generates heat by embedding the heating wire, the heating wire itself has a stable, pre-formed shape. Compared to the method of printing heating circuits, there is no problem of unevenness in various places, resulting in strong heating stability and improved consistency of the heating component. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application;

[0017] Figure 2 This is a cross-sectional view of an aerosol generating apparatus provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the structure of a heating assembly provided in one embodiment of this application;

[0019] Figure 4 A cross-sectional view of a heating assembly provided in an embodiment of this application;

[0020] Figure 5 This is an exploded structural diagram of a heating assembly provided in an embodiment of this application.

[0021] Reference numerals: heating component 10, heating tube 11, receiving cavity 111, socket 112, heating wire 12, dense section 121, loose section 122, outer shell 20, assembly cavity 21, support assembly 30, power supply 40, aerosol matrix 50. Detailed Implementation

[0022] 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.

[0023] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0024] 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).

[0025] 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.

[0026] Please refer to Figure 1 and Figure 2This application provides an aerosol generating device, which includes a heating component 10. Furthermore, the aerosol generating device may also include components such as a housing 20, a support assembly 30, a power supply 40, and a controller.

[0027] The housing 20 has an assembly cavity 21, in which the bracket assembly 30, heating assembly 10, power supply 40, and controller are all installed. The bracket assembly 30 is used to mount and fix the heating assembly 10, the power supply 40 is used to supply power to the heating assembly 10, and the controller is used to control the heating of the heating assembly 10.

[0028] The heating component 10 is used to contain and heat the aerosol matrix 50, wherein the aerosol matrix 50 includes at least a matrix segment, which is used to generate aerosols upon heating. In one embodiment, the aerosol matrix 50 further includes a coating 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.

[0029] 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 50 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 mainly has a filtering function, through which the user inhales the aerosol. The nozzle segment may contain a filter medium that can filter tar, suspended particles, etc., in 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.

[0030] 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 50 structure and serves as a physical support base to prevent the aerosol matrix 50 particles or materials from loosening or falling off during heating, maintaining the integrity of the aerosol matrix 50 structure, 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 50 structure. In addition, the sealing section can 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 50 structure may not have at least one of the cooling section, sealing section, and nozzle section, or the aerosol matrix 50 may have other functional sections, which will not be described in detail here.

[0031] like Figure 3-5 As shown, the heating assembly 10 includes a heating tube 11 and a heating wire 12. The heating tube 11 includes a sidewall, wherein the sidewall can be annular in shape, so that a receiving cavity 111 is provided inside the sidewall. One end of the receiving cavity 111 has an insertion port 112 for inserting the aerosol matrix 50 into the receiving cavity 111. The side of the receiving cavity 111 away from the insertion port 112 can be an open end or a closed end.

[0032] like Figure 4 As shown, the heating wire 12 is embedded in the side wall and surrounds the outer periphery of the receiving cavity 111. The heating wire 12 includes a dense section 121 and a loose section 122 arranged sequentially along the axial direction of the receiving cavity 111. The dense section 121 and the loose section 122 can be connected. The axial direction of the receiving cavity 111 is generally consistent with the axial direction of the socket 112. The dense section 121 is more densely arranged than the loose section 122, and the dense section 121 is closer to the socket 112 than the loose section 122. Specifically, the denser arrangement of the dense section 121 compared to the loose section 122 can mean that the number of turns of the dense section 121 per unit height in the axial direction of the receiving cavity 111 is greater than the number of turns of the loose section 122.

[0033] Since the heating tube 11 of this application heats up by embedding the heating wire 12, and the heating wire 12 itself has a stable, pre-formed shape, there is no problem of unevenness in various places compared with the method of printing heating circuits, which makes the heating stability strong and improves the consistency of the heating assembly 10. Moreover, compared with the method of printing heating circuits, the process of embedding the heating wire 12 into the heating tube 11 is simple. Furthermore, since the heating wire 12 includes a dense section 121 and a loose section 122, and the dense section 121 is set close to the insertion port 112, the heating efficiency of the heating wire 12 near the insertion port 112 is higher. Thus, when the aerosol matrix 50 is inserted into the receiving cavity 111, the end of the matrix section near the insertion port 112 has a higher heating efficiency. In the preheating stage, the dense section 121 of the heating wire 12 heats up quickly, generating the first aerosol. After the aerosol matrix 50 obtains sufficient energy, the heating tube can maintain an appropriate temperature to meet the suction requirements, thereby ensuring that the first few aerosols flow out quickly.

[0034] In some embodiments, the heating component 10 heats the aerosol matrix 50 in an anaerobic manner, meaning the bottom of the aerosol matrix 50 is sealed, and no air enters the bottom of the aerosol matrix 50. Of course, the heating component 10 can also heat the aerosol matrix 50 in an aerobic manner, in which case air enters the aerosol matrix 50 from the bottom.

[0035] In one embodiment, such as Figure 5 As shown, the heating wire 12 is spirally wound around the outer periphery of the receiving cavity 111. The pitch of the dense section 121 is smaller than the pitch of the loose section 122, so that the density of the dense section 121 is greater than that of the loose section 122. The heating wire 12 can be a single, continuous heating wire, and both ends of the heating wire 12 are electrically connected to the two ends of the power supply 40 so that the heating wire 12 can generate heat when energized. By setting the heating wire 12 in a spiral shape, the density of the dense section 121 and the loose section 122 can be more easily adjusted.

[0036] In one embodiment, the axial length of the dense section 121 is less than the axial length of the loose section 122, so that when the aerosol matrix 50 is heated as a whole after preheating, the temperature is not easily too high, preventing more water vapor from evaporating from the aerosol matrix 50 and causing the aerosol to burn the mouth.

[0037] In some embodiments, the number of at least one of the dense section 121 and the loose section 122 can be two or more. For example, the heating wire 12 can be provided with dense sections 121 at both ends along the axial direction, and the two dense sections 121 are connected by the loose section 122 in the middle to improve heating efficiency.

[0038] In one embodiment, the dense section 121 is a first spiral coil, the loose section 122 is a second spiral coil, and the first spiral coil and the second spiral coil are disconnected. That is, in this embodiment, the heating wire 12 is composed of two spiral coils.

[0039] In some embodiments, the pitch of the dense section 121 remains unchanged, and the pitch of the loose section 122 remains unchanged, so as to ensure the uniformity of heating of the dense section 121 and the loose section 122, which is beneficial to make the manufacturing of the heating component 10 more consistent.

[0040] In one embodiment, at least one of the dense section 121 and the loose section 122 includes a plurality of non-connected coils arranged axially along the receiving cavity 111. The coils can be one or more turns, meaning that both the dense section 121 and the loose section 122 can each include two or more coils, each generating electricity independently.

[0041] In one embodiment, the inner diameter of the receiving cavity 111 along the first direction is smaller than the inner diameter along the second direction. Both the first and second directions are perpendicular to the axial direction of the receiving cavity 111. In some embodiments, the inner diameter of the receiving cavity 111 along the first direction is the minimum inner diameter, which is smaller than the outer diameter of the aerosol matrix 50. Therefore, when the cylindrical aerosol matrix 50 is inserted into the receiving cavity 111, the narrower inner diameter of the receiving cavity 111 along the first direction allows for compression of the aerosol matrix 50, causing it to deform. The size of the aerosol matrix 50 decreases along the first direction, while its size increases along the second direction. Consequently, the outer contour of the aerosol matrix 50 can become the contour of the receiving cavity 111, resulting in a closer contact between the aerosol matrix 50 and the heating element, enhancing heat conduction, improving heating efficiency, and facilitating rapid aerosol generation during preheating.

[0042] In one embodiment, the radial cross-section of the receiving cavity 111 is elliptical. In other embodiments, the radial cross-section of the receiving cavity 111 may also be elliptical in shape.

[0043] In one embodiment, the radial cross-section of the receiving cavity 111 is consistent at all points in its axial direction, that is, the receiving cavity 111 is cylindrical.

[0044] In one embodiment, a mounting cavity is embedded in the sidewall, surrounding the receiving cavity 111 and spaced apart from it. The shape of the mounting cavity is consistent with the shape of the heating wire 12, and the heating wire 12 is disposed within the mounting cavity. This allows the heating wire 12 to make tight contact with the cavity wall of the mounting cavity, enabling heat to be transferred to the heating tube 11 more quickly and extensively. If there is an air gap between the heating wire 12 and the cavity wall of the mounting cavity, the heat transfer efficiency of the heating wire 12 may be reduced.

[0045] 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 component, applied in an aerosol generating device, characterized in that, include: A heating tube, the heating tube including a side wall, the side wall having an inner circumference of a receiving cavity, one end of the receiving cavity having a socket for inserting an aerosol matrix into the receiving cavity; The heating wire is embedded in the side wall and surrounds the outer periphery of the receiving cavity. The heating wire includes a dense section and a loose section arranged sequentially along the axial direction of the receiving cavity. The dense section is more tightly surrounded than the loose section and is closer to the insertion port than the loose section.

2. The heating assembly according to claim 1, characterized in that, The heating wire is spirally wound around the outer periphery of the receiving cavity, and the pitch of the dense section is smaller than the pitch of the loose section.

3. The heating assembly according to claim 2, characterized in that, The dense segment is connected to the loose segment, and the axial length of the dense segment is less than the axial length of the loose segment.

4. The heating assembly according to claim 1, characterized in that, The dense section is a first spiral coil, and the loose section is a second spiral coil. The first spiral coil and the second spiral coil are disconnected.

5. The heating assembly according to claim 1, characterized in that, At least one of the dense section and the loose section includes a plurality of coils arranged axially along the receiving cavity and not connected to each other.

6. The heating assembly according to any one of claims 1-5, characterized in that, The inner diameter of the receiving cavity along the first direction is smaller than the inner diameter along the second direction. Both the first direction and the second direction are perpendicular to the axial direction of the receiving cavity, and the first direction and the second direction are perpendicular to each other.

7. The heating assembly according to claim 6, characterized in that, The radial cross-section of the cavity is elliptical.

8. The heating assembly according to claim 7, characterized in that, The cavity has a uniform radial cross-section at all points along its axial direction.

9. The heating assembly according to any one of claims 1-5, characterized in that, The side wall is embedded with an installation cavity, which surrounds the receiving cavity and is spaced apart from it. The shape of the installation cavity is consistent with the shape of the heating wire, and the heating wire is disposed in the installation cavity.

10. An aerosol generating device, characterized in that, Includes the heating assembly as described in any one of claims 1-9.

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