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 is used in the aerosol generating device and includes a heating tube with a receiving cavity inside. One end of the receiving cavity has an insertion port for inserting an aerosol matrix into the receiving cavity. The heating tube has an expansion section and at least one extrusion section arranged sequentially along its axial direction. The expansion section protrudes outward in the radial direction of the heating tube relative to the extrusion section. At least one extrusion section is located on the side of the expansion section near the insertion port. Thus, when the aerosol matrix is ​​inserted into the heating tube, the matrix section of the aerosol matrix near the insertion port is extruded by the extrusion section, which enhances the heat transfer of the heating tube to the matrix section near the insertion port. Therefore, aerosol can be generated quickly in the upper part of the matrix section. There is a certain gap between the expansion section and the aerosol matrix, which reduces the heat transfer of the aerosol matrix at the expansion section and prevents the problem of the aerosol being too hot to handle.

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] However, current methods of circumferentially heating aerosol matrices result in slow aerosol emission rates and the aerosols can easily burn the mouth. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device, which can solve the problems of slow aerosol output speed and easy scalding of the mouth when the aerosol generating device is heated circumferentially.

[0005] To solve the above-mentioned technical problems, this application provides a heating assembly for an aerosol generating device. The heating assembly includes a heating tube 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 tube is provided with an expansion portion and at least one extrusion portion in sequence along its axial direction. The expansion portion protrudes outward in the radial direction of the heating tube relative to the extrusion portion. At least one extrusion portion is located on the side of the expansion portion near the socket.

[0006] In one embodiment, there are two extrusion sections, namely a first extrusion section and a second extrusion section, which are arranged sequentially along the axial direction of the heating tube.

[0007] In one embodiment, at least a portion of the expansion portion is located at the midpoint of the heating tube's axial direction on the side near the inlet.

[0008] In one embodiment, the expansion portion protrudes outward from the compression portion along the radial direction of the heating tube by 0.1mm-0.3mm.

[0009] In one embodiment, the radial cross-section of the expansion portion is consistent at all axial heights of the expansion portion, and the radial cross-section of the extrusion portion is consistent at all axial heights of the extrusion portion.

[0010] In one embodiment, the radial cross-sections of the expansion portion and the compression portion are elliptical rings.

[0011] In one embodiment, the projection of the expansion portion onto the radial cross-section of the extrusion portion is a first ring, and the projection of the extrusion portion onto the radial cross-section of the extrusion portion is a second ring, with the first ring fitted around the outer periphery of the second ring.

[0012] In one embodiment, the heating assembly further includes an aerosol matrix, wherein when the aerosol matrix is ​​contained within the receiving cavity, the extrusion portion contacts the outer wall of the aerosol matrix, and the expansion portion is spaced apart from the outer wall of the aerosol matrix.

[0013] In one embodiment, the heating assembly further includes a magnetic induction coil, which is sleeved on the outer periphery of the heating tube and is used for magnetic induction heating of the heating tube.

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

[0015] This application provides a heating component and an aerosol generating device. The heating component is used in the aerosol generating device and includes a heating tube with a receiving cavity inside. One end of the receiving cavity has an insertion port for inserting an aerosol matrix into the receiving cavity. The heating tube has an expansion section and at least one extrusion section arranged sequentially along its axial direction. The expansion section protrudes radially outward relative to the extrusion section of the heating tube. At least one extrusion section is located on the side of the expansion section near the insertion port. Thus, when the aerosol matrix is ​​inserted into the heating tube, the matrix section of the aerosol matrix near the insertion port is extruded by the extrusion section, enhancing the heat transfer of the matrix section near the insertion port from the heating tube. Therefore, aerosol can be generated rapidly in the upper part of the matrix section. The expansion section protrudes radially outward relative to the extrusion section, creating a certain gap between the expansion section and the aerosol matrix, reducing heat transfer of the aerosol matrix at the expansion section, reducing water vapor generated by the heated aerosol matrix, and preventing the aerosol from easily burning the mouth. 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 A cross-sectional view of a heating assembly provided in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of a heating tube provided in one embodiment of this application;

[0020] Figure 5 This is a cross-sectional view of a heating tube provided in an embodiment of this application.

[0021] Reference numerals: heating component 10, heating tube 11, receiving cavity 111, socket 112, expansion part 113, extrusion part 114, first extrusion part 1141, second extrusion part 11422, magnetic induction coil 115, aerosol matrix 12, matrix segment 121, outer shell 20, mounting cavity 21, bracket assembly 30, power supply 40. 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 2 This 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 a mounting 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] like Figure 3-5 As shown, the heating assembly 10 includes a heating tube 11, and a receiving cavity 111 is provided inside the heating tube 11. One end of the receiving cavity 111 has a socket 112 for inserting the aerosol matrix 12 into the receiving cavity 111. The side of the receiving cavity 111 away from the socket 112 can be an open end or a closed end.

[0029] The aerosol matrix 12 includes at least a matrix segment 121, wherein the matrix segment 121 is used to generate aerosols upon heating. In one embodiment, the aerosol matrix 12 further includes an encapsulation layer surrounding the matrix segment 121. The matrix segment 121 is primarily composed of tobacco, herbal or plant leaves, or medicinal materials. It is understood that the materials forming the matrix segment 121 are not limited; the matrix segment 121 can be formed from a single material or from a mixture of multiple materials in different proportions.

[0030] The coating layer can be formed of a coating material such as paper, thereby maintaining the shape of the matrix segment 121. 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 12 further includes a nozzle segment, a cooling segment, and a sealing segment. The nozzle segment, cooling segment, matrix segment 121, and sealing segment are arranged sequentially along the axis of the matrix segment 121. 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 reduce 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 is provided with cooling holes communicating with the outside of the cooling segment. After the aerosol is generated in the matrix section 121, it flows through the cooling channel and finally flows out from the nozzle section for the user to inhale. When 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 reduce its temperature.

[0031] 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 braided tubing, 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 12 structure and serves as a physical support base to prevent the aerosol matrix 12 particles or materials from loosening or falling off during heating, maintaining the integrity of the aerosol matrix 12 structure and preventing leakage due to thermal expansion or movement of the matrix section 121, which would affect the user experience. Furthermore, if condensate is generated in the cooling section or matrix section 121, the fiber structure of the sealing section can prevent the liquid from flowing out of the aerosol matrix 12 structure. 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 12 structure may not have at least one of the cooling section, sealing section, and nozzle section, or the aerosol matrix 12 may have other functional sections, which will not be described in detail here.

[0032] like Figure 3-5As shown, the heating tube 11 is provided with an expansion portion 113 and at least one extrusion portion 114 sequentially along its axial direction. The axial direction of the heating tube 11 is generally the same as the axis of the socket 112. The expansion portion 113 and the extrusion portion 114 are generally connected along the axial direction of the heating tube 11. The expansion portion 113 protrudes radially outward relative to the extrusion portion 114, that is, in each axial cross-section of the heating tube 11, the inner diameter of the expansion portion 113 is larger than the inner diameter of the extrusion portion 114. The axial cross-section is a cross-section parallel to the axial direction of the heating tube 11. At least one extrusion portion 114 is provided on the side of the expansion portion 113 near the socket 112 for heating the end of the substrate section 121 near the socket 112.

[0033] like Figure 3 As shown, when the aerosol matrix 12 is inserted into the heating tube 11, the matrix section 121 of the aerosol matrix 12 near the insertion port 112 is squeezed by the extrusion section 114, which enhances the heat transfer from the heating tube 11 to the matrix section 121 near the insertion port 112. Therefore, aerosol can be generated quickly in the upper part of the matrix section 121. The expansion section 113 protrudes radially outward relative to the extrusion section 114, so that there is a certain gap between the expansion section 113 and the aerosol matrix 12, reducing the heat transfer of the aerosol matrix 12 at the expansion section 113, reducing the water vapor generated by the aerosol matrix 12 when heated, and preventing the problem of the aerosol easily burning the mouth.

[0034] Specifically, in one embodiment, the heating assembly 10 further includes an aerosol matrix 12. When the aerosol matrix 12 is received in the receiving cavity 111, the extrusion portion 114 contacts the outer wall of the aerosol matrix 12, and the expansion portion 113 is spaced apart from the outer wall of the aerosol matrix 12. The inner diameter of the extrusion portion 114 is smaller than the outer diameter of the aerosol matrix 12 at least in a certain axial cross-section, so that the extrusion portion 114 can extrude the aerosol matrix 12 after it is received in the receiving cavity 111. Since the expansion portion 113 is located on the side of the extrusion portion 114 away from the insertion port 112, and the expansion portion 113 protrudes radially outward relative to the extrusion portion 114, the aerosol matrix 12 will not come into contact with the expansion portion 113 after being extruded and shaped by the extrusion portion 114 during the insertion process of the aerosol matrix 12.

[0035] In one embodiment, such as Figure 3-5As shown, there are two extrusion sections 114, namely a first extrusion section 1141 and a second extrusion section 1142. The first extrusion section 1141, the expansion section 113, and the second extrusion section 1142 are arranged sequentially along the axial direction of the heating tube 11. Specifically, the first extrusion section 1141, the expansion section 113, and the second extrusion section 1142 are connected sequentially along the axial direction of the heating tube 11. Generally, the radial cross-section of the first extrusion section 1141 is the same as the radial cross-section of the second extrusion section 1142, that is, the shape of the first extrusion section 1141 is approximately the same as the shape of the second extrusion section 1142. Of course, in other embodiments, the inner diameter of the first extrusion section 1141 may be larger than the inner diameter of the second extrusion section 1142 on each axial cross-section of the heating tube 11, and the first extrusion section 1141 may be positioned closer to the inlet 112 than the second extrusion section 1142. The expansion portion 113 is connected between the first extrusion portion 1141 and the second extrusion portion 1142, and protrudes radially relative to the first extrusion portion 1141 and the second extrusion portion 1142. In other embodiments, the number of extrusion portions 114 and the number of expansion portions 113 may also be other numbers, for example, the number of extrusion portions 114 may be two or more, and the number of expansion portions 113 may be two or more.

[0036] Therefore, when the matrix segment 121 of the aerosol matrix 12 is located in the receiving cavity 111, the first extrusion part 1141 extrudes the matrix segment 121 from the end of the matrix segment 121 near the insertion port 112, and the second extrusion part 1142 extrudes the matrix segment 121 from the end of the matrix segment 121 away from the insertion port 112. This can accelerate the generation of aerosol in the matrix segment 121 and increase the aerosol generation rate. Since the expansion segment does not contact the outer wall of the aerosol matrix 12, the scheme of contacting the heating tube 11 with the outer wall of the aerosol matrix 12 as a whole can reduce the temperature of the aerosol and prevent the aerosol from burning the mouth.

[0037] In one embodiment, at least a portion of the expansion portion 113 is located on the side near the inlet 112 at the midpoint of the axial direction of the heating tube 11. That is, the expansion portion 113 may be located in the upper-middle part of the axial direction of the heating tube 11. This is because the aerosol will flow toward the side of the inlet 112, and heat concentration is likely to occur in the upper-middle part of the axial direction of the heating tube 11. Therefore, the upper-middle part of the heating tube 11 needs to be provided with the expansion portion 113 to reduce the temperature of the aerosol matrix 12, thereby reducing the temperature of the aerosol.

[0038] In one embodiment, the expansion portion 113 protrudes radially outward from the extrusion portion 114 along the heating tube 11 by 0.1mm-0.3mm, for example, 0.1mm, 0.2mm, or 0.3mm. Within this range, the size difference between the expansion portion 113 and the extrusion portion 114 is moderate. If the size difference between the expansion portion 113 and the extrusion portion 114 is too large, it will cause the heat reduction of the matrix section 121 relative to the expansion portion 113 to be too large, resulting in insufficient overall heating. If the size difference between the expansion portion 113 and the extrusion portion 114 is too small, the cooling effect of the aerosol is not significant.

[0039] In one embodiment, the radial cross-section of the expansion portion 113 at each axial height is consistent, and the radial cross-section of the extrusion portion 114 at each axial height is consistent. That is, the inner diameter of the expansion portion 113 and the extrusion portion 114 remain unchanged at any axial cross-section, so that both the expansion portion 113 and the extrusion portion 114 are cylindrical, making the heating of the expansion portion 113 and the extrusion portion 114 more uniform.

[0040] In one embodiment, the radial cross-section of the expansion portion 113 and the extrusion portion 114 is an elliptical ring. Therefore, when the aerosol matrix 12 is inserted into the extrusion portion 114, the narrower inner diameter of the ellipse extrudes the cylindrical aerosol matrix 12, flattening it and increasing the tightness of contact between the extrusion portion 114 and the aerosol matrix 12, thereby improving the thermal conductivity of the extrusion portion 114 to the aerosol matrix 12.

[0041] In one embodiment, the projection of the expansion portion 113 onto the radial cross-section of the extrusion portion 114 is a first ring, and the projection of the extrusion portion 114 onto the radial cross-section of the extrusion portion 114 is a second ring. The first ring is fitted around the outer periphery of the second ring, that is, the expansion portion 113 as a whole protrudes outward in the radial direction relative to the extrusion portion 114, so as to prevent the aerosol matrix 12 from contacting the expansion portion 113 when it is inserted into the receiving cavity 111 after the extrusion section is shaped.

[0042] In one embodiment, such as Figure 3 As shown, the heating assembly 10 also includes a magnetic induction coil 115, which is sleeved around the outer periphery of the heating tube 11. The magnetic induction coil 115 is used for magnetic induction heating of the heating tube 11. The heating tube 11 is a magnetic induction sensor and can generate heat under the action of the magnetic induction coil 115. Of course, this application does not limit the form of heat generation of the heating tube 11; it can also be infrared, microwave, resistance heating, or other heating methods.

[0043] 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 for an aerosol generating device, characterized in that, include: A heating tube is provided with a receiving cavity inside the heating tube. One end of the receiving cavity has a socket for inserting an aerosol matrix into the receiving cavity. The heating tube is provided with an expansion portion and at least one extrusion portion in sequence along its axial direction. The expansion portion protrudes outward in the radial direction of the heating tube relative to the extrusion portion. At least one of the extrusion portions is provided on the side of the expansion portion near the socket.

2. The heating assembly of claim 1, wherein, There are two extrusion sections, namely a first extrusion section and a second extrusion section, which are arranged sequentially along the axial direction of the heating tube.

3. The heating assembly of claim 2, wherein, At least a portion of the expansion portion is located at the midpoint of the axial direction of the heating tube on the side near the inlet.

4. The heating assembly according to claim 1, characterized in that, The expansion portion protrudes outward from the extrusion portion in the radial direction of the heating tube by 0.1mm-0.3mm.

5. The heating assembly according to any one of claims 1-4, characterized in that, The radial cross-section of the expansion portion is consistent at all axial heights of the expansion portion, and the radial cross-section of the extrusion portion is consistent at all axial heights of the extrusion portion.

6. The heating assembly according to claim 1, characterized in that, The radial cross-sections of the expansion section and the compression section are elliptical rings.

7. The heating assembly according to claim 6, characterized in that, The projection of the expansion portion onto the radial cross-section of the extrusion portion is a first ring, and the projection of the extrusion portion onto the radial cross-section of the extrusion portion is a second ring, with the first ring fitted around the outer periphery of the second ring.

8. The heating assembly according to any one of claims 1-4, characterized in that, The heating assembly also includes an aerosol matrix. When the aerosol matrix is ​​contained within the receiving cavity, the extrusion portion contacts the outer wall of the aerosol matrix, and the expansion portion is spaced apart from the outer wall of the aerosol matrix.

9. The heating assembly according to any one of claims 1-4, characterized in that, The heating assembly also includes a magnetic induction coil, which is sleeved on the outer periphery of the heating tube and is used to magnetically induction heat the heating tube.

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

Images