Heating structure and atomization device

Abstract

The utility model discloses a heating structure and an atomization device, and relates to the technical field of heating non-combustion atomization, and the heating structure comprises a heat conduction cylinder and a heating piece. An inner cavity of the heat conduction cylinder is used for containing an aerosol forming substrate, a first protruding part is arranged on the inner wall of the heat conduction cylinder, a second protruding part is arranged at the cylinder bottom of the heat conduction cylinder, and the first protruding part is used for forming a first airflow channel between the side wall of the heat conduction cylinder and the aerosol forming substrate. The second protruding part is used for forming a second airflow channel between the cylinder bottom and the aerosol forming substrate, and the first airflow channel is communicated with the outside and the second airflow channel. A cylinder body of the heat conduction cylinder is provided with a first area and a second area in the axial direction of the heat conduction cylinder, the first area is located on the side away from the cylinder bottom, the second area is located on the side close to the cylinder bottom, and the heating piece is fixed to the cylinder body at the second area. The heating piece provides heat for the heat conduction cylinder at the local position, the heat provided for the aerosol forming matrix is controlled, and the problem of mouth scalding is solved.

Description

Technical Field

[0001] The present application relates to the technical field of heating without burning atomization, and in particular to a heating structure and an atomization device. Background Art

[0002] An atomizer is a device that heats and atomizes an aerosol-forming matrix to produce an inhalable aerosol. The atomizer mainly includes two parts: a heating structure and a power supply structure. The heating structure is used to heat the aerosol-forming matrix, and the power supply structure is used to provide electrical energy to the heating structure.

[0003] The existing heating structure can heat the aerosol-forming matrix through the side wall hot air flow, but because the heating structure heats the aerosol-forming matrix through the entire heating element, the temperature of the aerosol released from the aerosol-forming matrix is too high, causing a mouth-scalding problem. Utility Model Content

[0004] The present application provides a heating structure and an atomizing device, the main purpose of which is to solve the problem of burning the mouth when the heating structure heats the aerosol to form a matrix.

[0005] According to a first aspect of the present application, there is provided a heating structure comprising:

[0006] a heat-conducting tube, wherein the inner cavity of the heat-conducting tube is used to accommodate an aerosol-forming substrate, the inner wall of the heat-conducting tube is provided with a first protrusion, and the bottom of the heat-conducting tube is provided with a second protrusion, the first protrusion is used to form a first airflow channel between the side wall of the heat-conducting tube and the aerosol-forming substrate, and the second protrusion is used to form a second airflow channel between the bottom of the tube and the aerosol-forming substrate, the first airflow channel being in communication with the outside and the second airflow channel respectively; and

[0007] The heating element is fixed to the cylinder at the second area along the axial direction of the heat-conducting cylinder. The cylinder body of the heat-conducting cylinder is provided with a first area and a second area. The first area is located on the side away from the cylinder bottom, and the second area is located on the side close to the cylinder bottom.

[0008] In one embodiment, the heating element is configured as one, and the heating element forms at least one layer of heating ring along the circumference of the cylinder.

[0009] In one embodiment, the heating element forms a layer of the heating ring along the circumference of the cylinder, and connecting electrodes are respectively fixed at both ends of the heating element along the circumference of the cylinder, and the connecting electrodes are used to be electrically connected to a power supply.

[0010] In one embodiment, a connecting member is provided between the heating member and the connecting electrode. The connecting member and the connecting electrode are provided in a one-to-one correspondence. Along the axial direction of the heat-conducting tube, the connecting member is respectively connected to the heating member and the connecting electrode.

[0011] In one embodiment, any one of the two connecting members is used to allow current to flow into the heating member from the end edge of the heating member through the connecting electrode, and the other of the two connecting members is used to allow current on the heating member to flow from the end edge to the connecting electrode.

[0012] In one embodiment, the heating element is configured as a plurality of heating elements, and the plurality of heating elements are connected in parallel.

[0013] In one embodiment, the plurality of heating elements are distributed along the axial direction of the heat-conducting cylinder, and the heating elements form at least one layer of heating ring along the circumference of the cylinder.

[0014] In one embodiment, the heating element is configured as two.

[0015] In one embodiment, an assembly groove is provided on the cylinder at the second region, and the heating element is fixed in the assembly groove.

[0016] According to a second aspect of the present application, an atomization device is provided, comprising a control board and the above-mentioned atomization heating structure, wherein the control board is electrically connected to the heating element, and the control board is used to control the working state of the heating element.

[0017] According to the heating structure of the above-described embodiment, when the aerosol-forming substrate is inhaled, external airflow can sequentially pass through the first and second airflow channels, and then enter the aerosol-forming substrate through the bottom of the aerosol-forming substrate. The airflow channel formed by the heating structure is the airflow channel formed within the heat-conducting tube. When the airflow channel is formed within the heat-conducting tube, the airflow path can be shortened or simplified, which helps reduce power consumption and improve the energy utilization efficiency of the heating structure. The body of the heat-conducting tube is provided with a first region and a second region. The heating element is fixed to the body in the second region. The heating element provides heat to a localized location of the heat-conducting tube, thereby controlling the heat provided to the aerosol-forming substrate and solving the problem of mouthburn. The first region is located away from the bottom of the tube, and the second region is located closer to the bottom of the tube. In this way, the heating element is located relatively close to the bottom of the aerosol-forming substrate. When heating the bottom section of the aerosol-forming substrate, the water vapor in the aerosol-forming substrate continues to flow toward the top of the aerosol-forming substrate, causing a certain degree of temperature reduction, which also has a cooling effect and alleviates the problem of mouthburn. After the aerosol-forming matrix at the bottom section is heated to release the aerosol, since the section near the top of the aerosol-forming matrix has not been baked or has not been fully baked, it can filter the aerosol released by the heated bottom section of the aerosol-forming matrix, so that the aerosol released from the top of the aerosol-forming matrix contains less impurities and particulate matter, thereby improving the taste of the aerosol. When heating the aerosol-forming matrix, the designed heating structure bakes the aerosol-forming matrix from the bottom little by little upwards, which will enable the aerosol-forming matrix to continuously release aerosol, thereby avoiding the phenomenon of heating the aerosol-forming matrix as a whole and ending the aerosol before a few puffs are taken. The heating element is located in the second area of the heat-conducting tube body near the bottom of the tube. On the one hand, due to the reduced area of the heating element, and on the other hand, due to the relatively farther distance between the heating element and the tube mouth, the amount of heat transferred from the heat-conducting tube to the outside world can be reduced, thereby reducing heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of a heat-conducting tube in one embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the heat-conducting tube in one embodiment of the present application;

[0020] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the heat conduction tube from another perspective;

[0021] Figure 4 This is a structural diagram of a heating element in an expanded state in one embodiment of the present application;

[0022] Figure 5 This is a structural diagram of another embodiment of the present application in which the heating element is in an expanded state;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the heat-conducting tube in another embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of the explosion structure of the heating structure in one embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of an atomization device in one embodiment of the present application;

[0026] Figure 9 for Figure 8 Enlarged structural diagram at point B in the middle.

[0027] Explanation of the accompanying drawings: 10. Heat-conducting tube, 11. Bottom of the tube, 12. Cylinder, 13. Cylinder mouth, 14. L-shaped support bar, 141. First protrusion, 142. Second protrusion, 15. Air flow groove, 16. Assembly groove, 17. Snap ring, 101. First area, 102. Second area, 20. Heating element, 21. Connecting electrode, 22. Connecting element, 23. Common electrode, 201. First heating element, 202. Second heating element, 30. Support member, 31. Assembly tube, 311. First tube cavity, 312. Second tube cavity, 313. Stop surface, 32. Outer tube, 40. End cover, 50. Base, 60. Clamping ring, 61. Clamping part, 70. Power supply, 80. Control panel, 90. Shell, 100. Aerosol-forming matrix. DETAILED DESCRIPTION

[0028] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may 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. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0030] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0031] There are many types of aerosol-forming matrices, which can be roughly divided into two categories based on how easily they release aerosols. One category is aerosol-forming matrices that have low heating requirements and are easy to release aerosols, such as herbal aerosol-forming matrices; the other category is aerosol-forming matrices that have high heating requirements and are not easy to release aerosols.

[0032] Currently, the heating element in the heating structure is not specifically designed according to the characteristics of the aerosol-forming matrix to be heated. Instead, the entire side wall of the heating element is used to heat the airflow, and then the heated airflow is used to heat the aerosol-forming matrix. In this process, the heating structure provides a large amount of heat to the aerosol-forming matrix at one time, so that a large amount of water in the aerosol-forming matrix is evaporated into water vapor at one time and released together with the aerosol, thereby causing a mouth-scalding problem. The mouth-scalding problem is more obvious especially when the aerosol-forming matrix is inhaled in the early stage.

[0033] The heating structure in the present application is suitable for heating an aerosol-forming substrate that has low heating requirements and is easy to release aerosols.

[0034] The heating structure, based on the characteristics of the aerosol-forming substrate 100, divides the body 12 of the heat-conducting tube 10 into a first region 101 and a second region 102. The heating element 20 is only provided in one of the two regions, so that heat is primarily distributed in a specific section of the heat-conducting tube 10, rather than throughout the entire section. This allows for controlled heat delivery to the aerosol-forming substrate 100, thereby resolving the mouth-scalding issue. The specific technical solution for the heating structure is described below:

[0035] See also Figures 1-9 In one embodiment of the present application, a heating structure is provided, including: a heat-conducting tube 10 and a heating element 20.

[0036] The inner cavity of the thermal tube 10 is used to accommodate the aerosol-forming substrate 100. A first protrusion 141 is provided on the inner wall of the thermal tube 10, and a second protrusion 142 is provided on the bottom 11 of the thermal tube 10. The first protrusion 141 is used to form a first airflow channel between the side wall of the thermal tube 10 and the aerosol-forming substrate 100, and the second protrusion 142 is used to form a second airflow channel between the bottom 11 and the aerosol-forming substrate 100. The first airflow channel is connected to the outside and the second airflow channel respectively.

[0037] Along the axial direction of the thermal tube 10, the barrel 12 of the thermal tube 10 is provided with a first region 101 and a second region 102. The first region 101 is located on a side away from the barrel bottom 11, and the second region 102 is located on a side close to the barrel bottom 11. The heating element 20 is fixed to the barrel 12 at the second region 102. For example, the heating element 20 is fixed to the barrel 12 using a thick film printing process.

[0038] The thick film printing may be metal thick film printing or ceramic thick film printing. The heating element 20 is configured to generate heat when energized and transfer the generated heat to the heat-conducting tube 10. The heat generated by the heat-conducting tube 10 can directly heat the sidewalls of the aerosol-forming substrate 100. Furthermore, the heat can be indirectly heated by heating the airflow passing through the first airflow channel, so that the heated airflow then flows into the aerosol-forming substrate 100 through the second airflow channel.

[0039] Using the heating structure of the above embodiment, when the aerosol-forming substrate 100 is inhaled, the external airflow can pass through the first airflow channel, the second airflow channel in sequence, and then enter the aerosol-forming substrate 100 through the bottom of the aerosol-forming substrate 100. The airflow channel formed by the heating structure (a general term for the first airflow channel and the second airflow channel) is the airflow channel formed inside the heat-conducting tube 10. When the airflow channel is formed inside the heat-conducting tube 10, the airflow path can be shortened or simplified, which helps to reduce power consumption and improve the energy utilization of the heating structure. The barrel 12 of the heat-conducting tube 10 is provided with a first area 101 and a second area 102, and the heating element 20 is fixed to the barrel 12 at the second area 102, that is, the heating element 20 provides heat to the heat-conducting tube 10 at a local position, thereby controlling the heat provided to the aerosol-forming substrate 100 to solve the problem of burning the mouth. The first region 101 is located away from the bottom 11 of the cartridge, and the second region 102 is located closer to the bottom 11. This allows the heating element 20 to be located relatively close to the bottom of the aerosol-forming substrate 100. When the bottom section of the aerosol-forming substrate 100 is heated, the water vapor within the aerosol-forming substrate 100 continues to flow toward the top of the aerosol-forming substrate 100, causing the temperature to decrease to a certain extent. This also has a cooling effect, thereby alleviating the problem of burning the mouth. After the bottom section of the aerosol-forming substrate 100 is heated to release aerosol, the top section of the aerosol-forming substrate 100, which is not baked or not fully baked, can filter the aerosol released by the bottom section of the aerosol-forming substrate 100. This results in the aerosol released from the top of the aerosol-forming substrate 100 containing less impurities and particulate matter, thereby improving the mouthfeel when inhaling the aerosol. The designed heating structure heats the aerosol-forming substrate 100 by gradually heating it upward from the bottom. This allows the substrate 100 to continuously release aerosol, preventing the phenomenon of monolithic heating of the substrate 100, where the aerosol is finished before a few puffs are taken. The heating element 20 is located in the second region 102 of the body 12 of the heat-conducting tube 10, near the bottom 11. This reduces the area of the heating element 20 and its relative distance from the tube opening 13, thereby reducing the amount of heat transferred from the heat-conducting tube 10 to the outside world and minimizing heat loss.

[0040] It should be noted that the bottom of the aerosol-forming substrate 100 refers to the end surface of the aerosol-forming substrate 100 located near the barrel bottom 11, and the top of the aerosol-forming substrate 100 refers to the end surface located outside the heating structure and away from the barrel bottom 11. The user inhales the aerosol through the top of the aerosol-forming substrate 100. When the aerosol-forming substrate 100 is heated by the heating structure, the aerosol released from the bottom section of the aerosol-forming substrate 100 continues to flow toward the top side as the user takes a puff.

[0041] See also Figure 4 The first area 101 and the second area 102 provided on the barrel 12 of the heat-conducting tube 10 are areas of the same or similar area. Specifically, for example, the first area 101 is roughly the area formed by the upper half of the barrel 12, and the second area 102 is roughly the area formed by the lower half of the barrel 12. The barrel 12 of the heat-conducting tube 10 is unfolded into a rectangular shape. After the barrel 12 of the heat-conducting tube 10 is unfolded, the first area 101 and the second area 102 thereon are also rectangular shapes. The length of the first area 101 and the length of the second area 102 are both similar to the length of the barrel 12 of the heat-conducting tube 10 in the unfolded state. The sum of the width of the first area 101 and the width of the second area 102 is approximately equal to the width of the barrel 12 of the heat-conducting tube 10. The length mentioned here refers to the horizontal dimension, and the width mentioned here refers to the vertical dimension. In other embodiments, the proportions of the first area 101 and the second area 102 on the barrel 12 of the thermal tube 10 can also be other values. For example, the first area 101 occupies 3 / 4 of the circumferential area of the barrel 12 of the thermal tube 10, and the second area 102 occupies 1 / 4 of the circumferential area of the barrel 12 of the thermal tube 10. There is no limitation on the specific area or shape of the first area 101 and the second area 102 on the barrel 12 of the thermal tube 10, and they can be flexibly set according to actual conditions.

[0042] Specifically, in the embodiment of the present application, the first protrusion 141 is a strip-shaped protrusion on the inner wall of the heat-conducting tube 10, and the second protrusion 142 can be a block-shaped, strip-shaped, or other protruding structure. Along the axial direction of the heat-conducting tube 10, the first protrusion 141 extends to the second protrusion 142. The first protrusion 141 and the second protrusion 142 are integrally connected to form an L-shaped support bar 14. The L-shaped support bars 14 in the heat-conducting tube 10 are configured in plurality, and the plurality of L-shaped support bars 14 are distributed in an array around the axis of the heat-conducting tube 10. Air flow grooves 15 are formed between adjacent L-shaped support bars 14, and the plurality of L-shaped support bars 14 correspondingly form a plurality of air flow grooves 15 distributed in an array around the axis of the heat-conducting tube 10. Please refer to Figure 9 When a user inhales the aerosol-forming substrate 100, the external airflow flows along the airflow grooves 15 between the inner wall of the heat-conductive tube 10 and the aerosol-forming substrate 100, to the airflow grooves 15 between the tube bottom 11 and the bottom of the aerosol-forming substrate 100, and then flows from the bottom of the aerosol-forming substrate 100 to the top of the aerosol-forming substrate 100. In other embodiments, the first protrusions 141 and the second protrusions 142 are two relatively independent parts. The number of the first protrusions 141 and the number of the second protrusions 142 may be the same or different, and the shapes of the first protrusions 141 and the second protrusions 142 may be the same or different. There is no specific limitation, as long as the first protrusions 141 and the second protrusions 142 can perform their respective functions.

[0043] In some embodiments, the heating element 20 is configured as a single heating element, forming at least one heating ring along the circumference of the barrel 12. The heating element 20 may be in sheet, mesh, or filamentary form. A sheet-shaped resistive heating circuit is used as an example to illustrate the specific layout of the heating element 20. The heating element 20 may be fixed to the circumference of the barrel 12 in a spiral arrangement or in a curved arrangement. The heating ring formed by the heating element 20 may be single, double, or triple-layered, depending on actual needs.

[0044] Specifically, the heating element 20 forms a heating ring along the circumference of the barrel 12, and connecting electrodes 21 are fixed to both ends of the heating element 20 along the circumference of the barrel 12. The connecting electrodes 21 are used to electrically connect to the power supply 70. At this time, any one of the two connecting electrodes 21 on the heating element 20 can be used to electrically connect to the positive pole of the power supply 70 through a lead, and the other of the two connecting electrodes 21 on the heating element 20 can be used to electrically connect to the negative pole of the power supply 70 through a lead. The shape of the barrel 12 of the heat-conducting tube 10 is compatible with the outer shape of the aerosol-forming matrix 100. Taking the aerosol-forming matrix 100 as an example, the corresponding heat-conducting tube 10 is also cylindrical. The heating ring formed by the heating element 20 on the circumference of the barrel 12 is approximately a complete ring structure, but because the two ends of the heating element 20 need to be electrically connected to the connecting electrodes 21, the heating element 20 cannot form a complete ring structure. When the heating element 20 forms a heating ring along the circumference of the barrel 12, the structure of the heating element 20 is simple and easy to process. At this time, the heating element 20 has a smaller heating area and is less likely to cause a burnt mouth problem.

[0045] More specifically, a connector 22 is provided between the heating element 20 and the connecting electrode 21. The connector 22 and the connecting electrode 21 are arranged in a one-to-one correspondence. Along the axial direction of the heat-conducting tube 10, the connector 22 is respectively connected to the heating element 20 and the connecting electrode 21. If the connector 22 is not provided, and the ends of the connecting electrode 21 and the heating element 20 are directly connected, for example, the connecting electrode 21 and the ends of the heating element 20 are overlapped, the temperature of the overlapping area of the heating element 20 and the connecting electrode 21 will decrease, and it will be impossible to provide a relatively uniform heating effect to different positions of the circumferential surface of the aerosol-forming substrate 100 at the same axial position. For another example, when the connecting electrode 21 is directly connected to the edge of the end of the heating element 20 along the axial direction of the heat-conducting tube 10, the current takes the shortest path, which will result in no current flowing through some parts of the end of the heating element 20, and thus no heating will be achieved, and it will also be impossible to provide a relatively uniform heating effect to different positions of the circumferential surface of the aerosol-forming substrate 100 at the same axial position. When a connector 22 is provided between the heating element 20 and the connecting electrode 21, it electrically connects the end edge of the heating element 20 and the connecting electrode 21 along the axial direction of the thermal tube 10. Connector 22 acts as a lead, allowing current to flow through the entire heating element 20 as much as possible, ensuring the heating effect of the heating structure. Specifically, connector 22 is a layer of silver paste. This way, connector 22 has very low resistance, generates very little heat, and minimizes its impact on the temperature field within the thermal tube 10.

[0046] More preferably, any one of the two connecting members 22 is used to allow the current to flow from the end edge of the heating member 20 to the heating member 20 through the connecting electrode 21, and the other of the two connecting members 22 is used to allow the current on the heating member 20 to flow from the end edge to the connecting electrode 21. Figure 4 As shown, the heating element 20, the connecting electrode 21 and the connecting element 22 are all in the shape of rectangular sheets. Figure 4 Taking the portion selected by the dotted line at A as an example, at this time, the edges of the left side of the heating element 20, the connecting electrode 21 and the connecting element 22 can be made flush, so that the current in the connecting electrode 21 can flow from the left edge of the heating element 20 into the heating element 20 through the connecting element 22, or the current on the heating element 20 can flow from the left edge of the heating element 20 to the connecting electrode 21. In this way, current can flow through the entire heating element 20, and the entire heating element 20 can generate heat evenly, thereby providing a more uniform heating effect to different positions on the circumferential surface of the aerosol-forming matrix 100 at the same axial position. The specific shapes and position layouts of the heating element 20, the connecting electrode 21 and the connecting element 22 here are only listed to better understand the technical solutions and technical effects of the present application, and should not be understood as limiting the present application.

[0047] In some embodiments, the heating element 20 is configured as a plurality of heating elements 20, and the plurality of heating elements 20 are connected in parallel. When the plurality of heating elements 20 are connected in parallel, it is convenient to flexibly control the plurality of heating elements 20, so that the heating structure can provide more heating modes, and provide better heating effects in accordance with the heating requirements of the aerosol-forming substrate 100.

[0048] Specifically, the plurality of heating elements 20 are distributed along the axial direction of the heat-conducting tube 10, and the heating elements 20 form at least one layer of heating rings along the circumference of the tube 12. The distribution of the plurality of heating elements 20 along the axial direction of the heat-conducting tube 10, and the heating elements 20 in the form of heating rings on the tube 12, can firstly ensure a relatively uniform heating effect at different locations on the circumference of the aerosol-forming substrate 100 at the same axial position, and secondly, can provide more refined segmented heating of the aerosol-forming substrate 100 along the axial direction of the heat-conducting tube 10.

[0049] More specifically, the heating element 20 is configured as two. For ease of description, any one of the two heating elements 20 is named the first heating element 201, and the other of the two heating elements 20 is named the second heating element 202. The number of heating rings formed by the first heating element 201 and the second heating element 202 can be the same or different, for example, Figure 5 As shown, the first heating element 201 is bent on the circumference of the barrel 12 to form two layers of heating rings, and the second heating element 202 is bent on the circumference of the barrel 12 to form a single layer of heating rings. A connecting electrode 21 is provided at the ends of the first heating element 201 and the second heating element 202 that are separated from each other, and a common electrode 23 is provided between the ends of the first heating element 201 and the second heating element 202 that are close to each other. In this case, the connecting electrode 21 is used to electrically connect to either the positive or negative pole of the power supply 70, and the common electrode 23 is used to electrically connect to the other of the positive and negative poles of the power supply 70.

[0050] See also Figure 6 More preferably, in one embodiment, an assembly groove 16 is provided on the cylinder 12 at the second region 102, and the heating element 20 is fixed in the assembly groove 16. When the heating element 20 is a heating ring structure, the assembly groove 16 is an annular assembly groove 16. Providing the assembly groove 16 on the cylinder 12 at the second region 102 can, on the one hand, reduce the thickness of the cylinder 12 at this location, so that the heat generated by the heating element 20 is more concentrated on the cylinder 12 at the second region 102, so as to concentrate the heating of the bottom section of the aerosol-forming substrate 100. On the other hand, the assembly groove 16 can clearly define the installation position of the heating element 20, thereby ensuring the consistency of products produced across a batch of heating structures.

[0051] To ensure the heat conduction effect of the heat conducting tube 10, the thermal conductivity of the heat conducting tube 10 should be no less than 10W / mk. If the heat conducting tube 10 has a higher heat conduction speed requirement, a material with higher heat conduction can be selected, such as aluminum alloy, copper, aluminum nitride, etc.

[0052] See also Figure 7-Figure 8 The heating structure also includes: a support member 30, an end cover 40, a base 50 and a clamping ring 60. The support member 30 includes an integrally connected assembly tube 31 and an outer tube 32. The outer tube 32 is sleeved on the outside of the assembly tube 31, and there is a radial gap between the outer tube 32 and the assembly tube 31. The assembly tube 31 has a first tube cavity 311 and a second tube cavity 312 that are connected. The diameter of the first tube cavity 311 is larger than the diameter of the second tube cavity 312. A stop surface 313 is formed at the connection between the first tube cavity 311 and the second tube cavity 312. A radially outward-protruding clamping ring 17 is provided at the tube mouth 13 of the heat-conducting tube 10. The heat-conducting tube 10 passes through the second tube cavity 312 and is placed in the outer tube 32. The clamping ring 17 and the stop surface 313 abut against each other to hang the heat-conducting tube 10 on the assembly tube 31. The end of the assembly tube 31 remote from the second lumen 312 is fixed to the inner wall of the outer tube 32. The end cap 40 is fixed within one end of the outer tube 32 and abuts the retaining ring 17. Thus, the retaining ring 17 can be clamped by the end cap 40 and the stop surface 313 to secure the thermal tube 10. A base 50 is fixed to the other end of the outer tube 32. A hollow passage is formed within the end cap 40 to facilitate the passage of the aerosol-forming substrate 100 into the thermal tube 10. A clamping ring 60 is fixed to the end of the end cap 40 remote from the base 50. A plurality of clamping portions 61 are formed on the inner wall of the clamping ring 60. The clamping portions 61 are configured to abut the sidewalls of the aerosol-forming substrate 100. Through the clamping portions 61, an air inlet channel is formed between the clamping ring 60 and the aerosol-forming substrate 100, communicating with the first airflow channel. Ambient air can flow into the aerosol-forming substrate 100 through the air inlet channel, the first airflow channel, and the second airflow channel, in sequence.

[0053] The heating structure of the above-described embodiment designed by this application provides an airflow channel within the heat-conducting tube 10, thereby shortening the airflow path within the heating structure. This helps reduce power consumption and improves the energy utilization of the heating structure. Furthermore, since the airflow channel is provided within the heat-conducting tube 10, cleaning the heating structure is facilitated. During cleaning, one need only remove the aerosol-forming matrix 100 and clean the interior of the heat-conducting tube 10. A heating element 20 is fixed to the barrel 12 near the second region 102 of the tube bottom 11. Because the heating element 20 is located at the lower section of the heat-conducting tube 10 and is relatively far from the tube mouth 13, it can reduce the amount of heat transferred from the heat-conducting tube 10 to the outside world, thereby reducing heat loss. The lower section of the heat-conducting tube 10 corresponds to the lower section of the aerosol-forming matrix 100 (i.e., the section near the bottom of the aerosol-forming matrix 100), allowing the aerosol-forming matrix 100 to be baked to ensure aerosol release while avoiding burns caused by excessive heating area.

[0054] In another embodiment of the present application, an atomizing device is provided, comprising a power supply 70, a control panel 80, a housing 90, and the atomizing heating structure of the above-described embodiment. The control panel 80 is electrically connected to the power supply 70 and the heating element 20, respectively. The power supply 70 is used to provide electrical energy to the heating element 20, and the control panel 80 is used to control the operating state of the heating element 20. The power supply 70, the control panel 80, and the heating structure are all located within the housing. Since the atomizing device has the heating structure of the above-described embodiment, it also has the advantages or beneficial effects of the heating structure of the above-described embodiment, and therefore will not be described in detail here.

[0055] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. A heating structure, characterized in that: include: a heat-conducting barrel, wherein the inner cavity of the heat-conducting barrel is configured to accommodate an aerosol-forming substrate, the inner wall of the heat-conducting barrel being provided with a first protrusion, and the bottom of the heat-conducting barrel being provided with a second protrusion, the first protrusion being configured to form a first airflow channel between the side wall of the heat-conducting barrel and the aerosol-forming substrate, and the second protrusion being configured to form a second airflow channel between the bottom of the barrel and the aerosol-forming substrate, the first airflow channel being in communication with the outside and the second airflow channel, respectively; and The heating element is fixed to the cylinder at the second area along the axial direction of the heat-conducting cylinder. The cylinder body of the heat-conducting cylinder is provided with a first area and a second area. The first area is located on the side away from the cylinder bottom, and the second area is located on the side close to the cylinder bottom.

2. The heating structure according to claim 1, wherein The heating element is configured as one, and the heating element forms at least one layer of heating ring along the circumference of the cylinder.

3. The heating structure according to claim 2, wherein: The heating element forms a layer of the heating ring along the circumference of the cylinder. Connecting electrodes are respectively fixed at both ends of the heating element along the circumference of the cylinder. The connecting electrodes are used to be electrically connected to a power source.

4. The heating structure according to claim 3, wherein: A connecting member is provided between the heating member and the connecting electrode. The connecting member and the connecting electrode are provided in a one-to-one correspondence. Along the axial direction of the heat-conducting tube, the connecting member is respectively connected to the heating member and the connecting electrode.

5. The heating structure according to claim 4, characterized in that Any one of the two connecting members is used to allow current to flow into the heating member from the end edge of the heating member through the connecting electrode, and the other one of the two connecting members is used to allow current on the heating member to flow from the end edge to the connecting electrode.

6. The heating structure according to claim 1, wherein: The heating element is configured in plurality, and the plurality of heating elements are connected in parallel.

7. The heating structure according to claim 6, wherein: The plurality of heating elements are distributed along the axial direction of the heat-conducting cylinder, and the heating elements form at least one layer of heating ring along the circumference of the cylinder.

8. The heating structure according to claim 6, wherein: The heating elements are configured in two.

9. The heating structure according to any one of claims 1 to 8, characterized in that An assembly groove is provided on the cylinder at the second area, and the heating element is fixed in the assembly groove.

10. An atomizing device, characterized in that: It comprises a control board and the atomizing heating structure according to any one of claims 1 to 9, wherein the control board is electrically connected to the heating element, and the control board is used to control the working state of the heating element.

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