Heating device and aerosol generating equipment

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating device and aerosol generation equipment, the heating device comprises a heating piece and a heating piece, the heating piece comprises an outer pipe and an inner pipe, the outer pipe is arranged outside the inner pipe in a sleeving mode, and an installation space is formed between the inner pipe and the outer pipe; the heating piece is provided with a first end and a second end which are oppositely arranged in the length direction of the heating piece, and the first end is used for being inserted into an aerosol substrate; at least one of the outer pipe and the inner pipe at the second end is provided with an air inlet; the heating element is arranged in the mounting space; the heating piece can heat the heating piece, and the heating piece can heat the air to form hot air flow. Due to the adoption of the heat conduction of the heat conduction piece and the heating of the hot air flow, the aerosol substrate is uniformly heated, the burning or insufficient heating temperature is avoided, and the use taste of a user can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and more particularly to a heating device and an aerosol generation device. Background Art

[0002] In existing central heating aerosol generation devices, at least part of the structure of the heating device is inserted into the aerosol matrix. The heating device usually has an excessively high temperature due to heat accumulation, causing the aerosol matrix in direct contact with it to be burned, and the aerosol matrix in the outer periphery not in direct contact with it to be incompletely baked due to insufficient temperature, resulting in uneven heating of the entire aerosol matrix and affecting the user's taste. Summary of the Utility Model

[0003] The present application provides a heating device and an aerosol generation device, which can make the aerosol matrix heated evenly and improve the user's taste.

[0004] The present application provides a heating device, including:

[0005] A heating element, the heating element includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube, and an installation space is provided between the inner tube and the outer tube; the heating element has a first end and a second end oppositely arranged along its length direction, and the first end is used for inserting the heating element into the aerosol matrix; an air flow channel is provided in the heating element; the air flow channel includes an air outlet and an air inlet, the air outlet is arranged on at least one of the inner tube and the outer tube at the first end, and the air inlet is arranged on at least one of the outer tube and the inner tube at the second end; and

[0006] A heating element, the heating element is arranged in the installation space; the heating element is energized to generate heat, and can heat the aerosol matrix and heat the air to form a hot air flow through heat conduction, and the hot air flow passes through the air flow channel to heat the aerosol matrix.

[0007] In one embodiment, the air inlet is arranged on the inner tube at the second end; the air outlet includes a first air outlet, and the first air outlet is arranged on the inner tube at the first end; the air inlet and the first air outlet are communicated; the air flow channel penetrates through the inner tube along the direction from the first end to the second end.

[0008] In one embodiment, the air flow channel further includes a first air flow hole and a second air flow hole, the first air flow hole penetrates through the side wall of the inner tube, the second air flow hole penetrates through the side wall of the outer tube, and the central axes of the first air flow hole and the second air flow hole are both arranged at an angle with the length direction of the heating element; the air inlet, the first air flow hole and the second air flow hole are communicated in sequence.

[0009] In one embodiment, the air inlet is provided on the inner tube at the second end; the air flow channel further includes a first air flow hole that penetrates the side wall of the inner tube, and the central axis of the first air flow hole is arranged at an angle with respect to the length direction of the heating element; the air outlet includes a second air outlet that is provided on the outer tube at the first end; the air inlet, the first air flow hole, and the second air outlet are sequentially communicated.

[0010] In one embodiment, the air inlet is provided on the inner tube at the second end; the air outlet includes a second air outlet that is provided on the outer tube at the first end; the air flow channel further includes a first air flow hole and a second air flow hole, the first air flow hole penetrates the side wall of the inner tube, the second air flow hole penetrates the side wall of the outer tube, and the central axes of the first air flow hole and the second air flow hole are both arranged at an angle with respect to the length direction of the heating element; the air inlet, the first air flow hole, the second air flow hole, and the second air outlet communicate with each other.

[0011] In one embodiment, the air inlet is provided on the outer tube at the second end; the air outlet includes a first air outlet that is provided on the inner tube at the first end; the air flow channel further includes a first air flow hole that penetrates the side wall of the inner tube, and the central axis of the first air flow hole is arranged at an angle with respect to the length direction of the heating element; the air inlet, the first air flow hole, and the first air outlet are sequentially communicated.

[0012] In one embodiment, the air flow channel further includes a second air flow hole that penetrates the side wall of the outer tube, and the central axis of the second air flow hole is arranged at an angle with respect to the length direction of the heating element; the air inlet, the first air flow hole, the second air flow hole, and the first air outlet communicate with each other.

[0013] In one embodiment, the first air flow hole and the second air flow hole are arranged offset from each other along the length direction of the heating element;

[0014] Or, the central axes of the first air flow hole and the second air flow hole are collinear; the central axes of the first air flow hole and the second air flow hole are both perpendicular to the length direction of the heating element.

[0015] In one embodiment, a plurality of convex structures are provided on the outer wall of the inner tube, and the convex structures abut against the inner wall of the outer tube; the plurality of convex structures are arranged at intervals in the direction from the first end to the second end, or the plurality of convex structures are arranged in a spiral shape in the direction from the first end to the second end with their heads and tails connected; the heating element is arranged in a spiral shape on the convex structures; the first air flow holes are arranged on the convex structures;

[0016] Alternatively, the inner tube includes a plurality of convex portions and concave portions, and the convex portions and the concave portions are alternately arranged in sequence to form a wavy structure, and a concave portion is provided between every two adjacent convex portions; the first air flow holes are arranged on the convex portions.

[0017] In one embodiment, the heating element includes a heating wire, a first lead pin and a second lead pin, and the first lead pin and the second lead pin are electrically connected to the heating wire;

[0018] There is one heating wire, and the heating wire is spirally arranged in the direction from the first end to the second end; the first lead pin is electrically connected to the heating wire near the first end, and the second lead pin is electrically connected to the heating wire near the second end; the first lead pin is arranged on the outer wall or the inner wall of the inner tube;

[0019] Alternatively, there are two heating wires, and both of the two heating wires are spirally arranged in the direction from the first end to the second end; the two heating wires at the second end are respectively electrically connected to the first lead pin and the second lead pin.

[0020] The present application provides a heating device, including:

[0021] a heating element, the heating element includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube to form an installation space between the inner tube and the outer tube; the heating element has a first end and a second end arranged oppositely along its length direction, and the first end is used for inserting the heating element into an aerosol matrix; an air flow channel is provided inside the heating element; the air flow channel includes an air inlet, a first air flow hole and a second air flow hole, the first air flow hole penetrates through the side wall of the inner tube, the second air flow hole penetrates through the side wall of the outer tube, and the central axes of the first air flow hole and the second air flow hole are both arranged at an angle to the length direction of the heating element; the air inlet is arranged on the inner tube at the second end; the air inlet, the first air flow hole and the second air flow hole are communicated in sequence; and

[0022] A heating element, which is arranged in the installation space; the heating element is powered on to generate heat, and can heat the aerosol matrix and heat the air to form a hot air flow through heat conduction, and the hot air flow passes through the air flow channel to heat the aerosol matrix.

[0023] The present application provides an aerosol generating device, which includes a power supply component and the heating device as described above.

[0024] According to the heating device in the above embodiment, it includes a heating member and a heating element. The heating member includes an outer tube and an inner tube. The heating element is arranged in the installation space between the outer tube and the inner tube. An air flow channel is provided in the heating member. Since the heating element is arranged in the installation space between the outer tube and the inner tube and there is an air flow channel in the heating member, the heating element can generate heat when powered on. Part of this heat is used to heat the aerosol matrix by heat conduction through the heating member, and part is used to heat the air to form a hot air flow to heat the aerosol matrix. The aerosol matrix is heated by comprehensively using the methods of heat conduction and hot air flow. It can not only utilize the high heat transfer efficiency of heat conduction, but also utilize the characteristic of long heat transfer distance of the hot air flow, increasing the heating range and making the aerosol matrix heated evenly. At the same time, since the air in the heating member is heated to form a hot air flow, it can take away a part of the heat generated by the heating element, reducing the heat transferred to the outer tube. Since the outer tube is in direct contact with the aerosol matrix, it can avoid the high temperature aggregation at the outer tube, avoid the aerosol matrix being scorched due to high temperature, and also avoid the problem that some aerosol matrices cannot generate aerosol due to insufficient baking temperature, thereby improving the user's taste. Description of the Drawings

[0025] Figure 1 It is a structural cross-sectional view of the heating device in an embodiment;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the heating member in an embodiment;

[0027] Figure 3 It is a structural schematic diagram of the heating element in an embodiment;

[0028] Figure 4 It is a structural cross-sectional view of the heating member in the first embodiment;

[0029] Figure 5 It is a structural cross-sectional view of the heating member in the second embodiment;

[0030] Figure 6 It is a structural cross-sectional view of the heating member in the third embodiment;

[0031] Figure 7 It is a structural cross-sectional view of the heating member in the fourth embodiment;

[0032] Figure 8 Structural cross-sectional view of the heating element in the fifth embodiment;

[0033] Figure 9 Structural cross-sectional view of the heating element in the sixth embodiment;

[0034] Figure 10 Structural cross-sectional view of the heating element in the seventh embodiment;

[0035] Figure 11 Structural cross-sectional view with both ends of the heating element closed;

[0036] Figure 12 Structural cross-sectional view with a convex structure provided on the inner tube;

[0037] Figure 13 Structural cross-sectional view with the inner tube being wavy.

[0038] Wherein: 100, heating element; 110, outer tube; 120, inner tube; 121, convex structure; 122, convex portion; 123, concave portion; 130, installation space; 140, first end; 150, second end; 160, air flow channel; 161, first air outlet; 162, air inlet; 163, first air flow hole; 164, second air flow hole; 165, second air outlet; 200, heating element; 210, heating wire; 220, conductor; 221, first pin; 222, second pin. Detailed implementation manners

[0039] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part 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, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0040] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners, and the operation steps involved in each embodiment can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the specification and the drawings are only for clearly describing a certain embodiment, and do not mean to be the necessary composition and / or sequence.

[0041] The serial numbers assigned to components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. As used in this application, the terms "connected" and "coupled", unless otherwise specified, both include direct and indirect connection (coupling).

[0042] This application provides an aerosol generating device (hereinafter referred to as the generating device), which can be used to heat an aerosol generating substrate to generate an aerosol that can be used.

[0043] It should be noted that the aerosol referred to in the terms is a dispersion of solid or liquid particles in a gas. As used herein, "aerosol" generally refers to a substance that has been vaporized, atomized, in the form of a spray or jet, or otherwise converted from a solid or liquid form into an inhalable form containing suspended solid or liquid drug particles.

[0044] As used herein, the term "aerosol generating substrate" refers to any suitable compound or mixture of compounds that facilitates the formation of an aerosol (such as a stable aerosol that substantially resists thermal degradation at the operating temperature of the system) during use. Suitable aerosol generating substrates are well known in the art and include, but are not limited to: polyols, such as triethylene glycol, 1,3 - butanediol, and glycerol; esters of polyols, such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

[0045] The aerosol generating substrate may include nicotine. The aerosol generating substrate may include water. Aerosol generating substrate A may include glycerol (also known as glycerin) which has a higher boiling point than nicotine. The aerosol generating substrate may include propylene glycol. The aerosol generating substrate may include plant - based materials. The aerosol generating substrate may include a homogeneous plant matrix material. The homogeneous plant matrix material may contain volatile compounds. These compounds may be released from the aerosol generating substrate upon heating. The aerosol generating substrate may be contained in a container to form a columnar structure with a preset length, etc.

[0046] The generating device includes a housing (not shown in the figure), a heating device, and a power supply component (not shown in the figure). An installation space is provided inside the housing, and both the heating device and the power supply component are arranged in the installation space. The power supply component is electrically connected to the heating device to provide the power required for the heating device to operate and control its operation. The housing can be understood as a collection of related components that constitute the overall outer contour of the generating device. For example, the housing can be assembled by combining one or more components, and corresponding assembly structures are provided inside the housing or on the housing wall to assemble other components of the generating device. For example, the PCB control circuit board, battery, etc. in the power supply component can be assembled inside the housing, and the operation buttons, etc. in the power supply component can be installed on the housing in a manner that is exposed outside the housing. With the help of this housing, users can carry, move, operate, and use the generating device.

[0047] It should be noted that the housing and the power supply component are technologies that have been publicly disclosed in the prior art and are not the core protected by this application, so they will not be elaborated here. The heating device to be protected by this application will be introduced in detail below.

[0048] Please refer to Figures 1 to 13 , the heating device includes a heating element 100 and a heating component 200. The heating component 200 can generate heat after being powered on and transfer the heat to the heating element 100. The heating element 100 transfers the heat to the aerosol matrix in at least one heat conduction method including heat conduction, hot air flow, and heat radiation, and heats and bakes it to form an aerosol for users to use.

[0049] Please refer to Figure 1 and Figure 2 , the heating element 100 includes an outer tube 110 and an inner tube 120. The outer tube 110 is sleeved outside the inner tube 120 and is spaced apart to form an installation space 130 between the inner tube 120 and the outer tube 110. The heating element 100 has a first end 140 and a second end 150 that are oppositely arranged along its length direction. The first end 140 is used for the heating element 100 to be inserted into the aerosol matrix and contact the aerosol matrix. Among them, the outer tube 110 is in direct contact with the aerosol matrix, and the aerosol matrix is mainly heated directly through the heat conduction of the outer tube 110. An air flow channel 160 is also provided inside the heating element 100. The air entering from the outside can be heated to form a hot air flow, and the hot air flow flows into the aerosol matrix through the air flow channel 160 to heat the aerosol matrix in the way of central hot air flow heating. The heat conduction and hot air flow heating methods can be comprehensively utilized to achieve uniform heating of the aerosol matrix.

[0050] Please refer to Figure 1 and Figure 3, the heating element 200 is disposed within the installation space 130. The heating element 200 includes a heating wire 210 and a conductor 220. The conductor 220 is electrically connected to the heating wire 210 for electrically connecting the heating wire 210 to the power supply assembly; the heating element 100 is inserted into the aerosol matrix, and its outer tube 110 mainly contacts the aerosol matrix. The heat generated by the energization of the heating element 200 is transferred to the heating element 100, so that the heating element 100 (mainly the outer tube 110) heats the aerosol matrix through heat conduction, and heats the air to form a hot air flow. The hot air flow passes through the air flow channel 160 to heat the aerosol matrix.

[0051] The heating element 200 disposed between the outer tube 110 and the inner tube 120 generates heat when energized. Since the outer tube 110 is in direct contact with the aerosol matrix, part of the heat generated by the heating element 200 can directly heat the aerosol matrix in a heat conduction manner through the outer tube 110, and part can heat the air to form a hot air flow, and then heat the aerosol matrix through the hot air flow. The aerosol matrix is heated by comprehensively using the heat conduction and hot air flow methods. The aerosol matrix around it is heated through the heat conduction of the outer tube 110. By utilizing the characteristic that the hot air flow has a long transmission distance, the heating range is increased, and the aerosol matrix far from the heating element 100 is prevented from being insufficiently heated, so that the aerosol matrix is heated evenly. At the same time, after the air in the heating element 100 is heated to form a hot air flow, it can take away a part of the heat generated by the heating element 200, reducing the heat transferred to the outer tube 110. Since the outer tube 110 is in direct contact with the aerosol matrix, it can avoid the high-temperature accumulation at the outer tube 110, avoid the aerosol matrix being scorched due to high temperature, and also avoid the problem that part of the aerosol matrix cannot generate aerosol due to insufficient baking temperature, thereby improving the user's taste.

[0052] The heating element 200 is disposed between the outer tube 110 and the inner tube 120. The heating element 200 is relatively close to the aerosol matrix and will not affect the heat conduction efficiency due to a long heat transfer path. At the same time, the aerosol matrix can also be heated by the hot air flow, which is beneficial to improving the utilization rate of heat and the heating efficiency.

[0053] In one embodiment, the heating wire 210 can be in a spiral structure, a mesh structure or a tubular structure. The heating wire 210 can be disposed on the inner wall of the outer tube 110 and fixed by an adhesive method, such as fixing the heating wire 210 by filling ceramic glue, silicate or glass frit. The filling materials not only require adhesiveness but also require high temperature resistance. Especially when the heating device is working, the internal temperature may reach 300°C - 400°C, and ceramic glue, silicate and glass frit can meet the above requirements. Alternatively, an installation groove adapted to the heating wire 210 can also be provided on the inner wall of the outer tube 110, such as providing a spiral groove to fix the spiral heating wire 210.

[0054] In one embodiment, the outer tube 110 and the inner tube 120 can be made of materials with excellent thermal conductivity (such as alumina, magnesia, silicon nitride, aluminum nitride, or an aluminum tube with a hard anodized surface, etc.), or infrared-transmitting materials (such as quartz glass, etc.), or materials with infrared characteristics (such as chalcogenide infrared glass, spinel, cordierite, ochre, etc.), or can be composed of two different materials spliced or compounded. The materials of the outer tube 110 and the inner tube 120 can be different or the same. For example, both the outer tube 110 and the inner tube 120 can be made of quartz glass, which is convenient for processing and has low cost.

[0055] The outer tube 110 and the inner tube 120 can be of a split structure. During preparation, they are processed separately and then assembled. The mold is easy to process and the preparation process is simple. Of course, the outer tube 110 and the inner tube 120 can also be of an integral structure, reducing assembly and avoiding the influence of tolerances during processing on the use effect after assembly. For example, the integrated outer tube 110 and inner tube 120 are formed by hot melting and stretching quartz glass in batches.

[0056] In one embodiment, the air flow channel 160 includes an air inlet 162 and an air outlet. The air outlet is provided on at least one of the outer tube 110 and the inner tube 120 located at the first end 140, and the air inlet 162 is provided on at least one of the outer tube 110 and the inner tube 120 located at the second end 150. The air inlet 162, the air outlet, and a part of the structure inside the heating element 100 (such as the installation space 130 or the cavity inside the inner tube 120) form the air flow channel 160 for the hot air to pass through.

[0057] It should be further noted that the air inlet 162 is provided on at least one of the outer tube 110 and the inner tube 120 located at the second end 150. It can be that the air inlet 162 is provided on the outer tube 110 located at the second end 150, and air enters the installation space 130 between the outer tube 110 and the inner tube 120 from the air inlet 162 and is heated to form hot air. It can also be that the air inlet 162 is provided on the inner tube 120 located at the second end 150, and air enters the inner tube 120 from the air inlet 162 and is heated to form hot air. The outer tube 110 located at the second end 150 closes the gap between it and the inner tube 120, which can realize the fixation of the outer tube 110 and the inner tube 120. It can also be that air inlets 162 are provided on both the outer tube 110 and the inner tube 120 located at the second end 150, so that air can enter both the inner tube 120 and the installation space 130 between the outer tube 110 and the inner tube 120. Similarly, there are also three similar arrangements for the air outlet provided on at least one of the outer tube 110 and the inner tube 120 located at the first end 140, which will not be elaborated here.

[0058] Please refer to Figure 4, in one embodiment, the air inlet 162 is provided on the inner tube 120 at the second end 150; the air outlet includes a first air outlet 161, and the first air outlet 161 is provided on the inner tube 120 at the first end 140; the air flow channel 160 penetrates through the inner tube 120 along the direction from the first end 140 to the second end 150. Specifically, the inner tube 120 is a hollow structure that penetrates through both ends. Air enters the inner tube 120 from the air inlet 162, is heated to form a hot air flow, and then is discharged from the first air outlet 161 and flows into the aerosol matrix for heating.

[0059] Of course, the outer tube 110 can also be a hollow structure that penetrates through both ends. The inner diameter of the outer tube 110 at the first end 140 is smaller than the outer diameter of the inner tube 120. When the inner tube 120 is disposed inside the outer tube 110, the end of its first end 140 abuts against the inside of the outer tube 110, and a closed structure can be formed between the outer tube 110 and the inner tube 120 at the first end 140.

[0060] Please refer to Figure 5 , in one embodiment, the air inlet 162 is provided on the inner tube 120 at the second end 150; the air outlet includes a first air outlet 161, and the first air outlet 161 is provided on the inner tube 120 at the first end 140; the air flow channel 160 further includes a first air hole 163 and a second air hole 164. The first air hole 163 penetrates through the side wall of the inner tube 120, and the second air hole 164 penetrates through the side wall of the outer tube 110. The central axes of the first air hole 163 and the second air hole 164 are both arranged at an angle to the length direction of the heating element 100; the air inlet 162, the first air hole 163, and the second air hole 164 are sequentially connected. The air inlet 162, the first air hole 163, the second air hole 164, and the first air outlet 161 form the air flow channel 160. Air enters the inner tube 120 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow can directly flow into the aerosol matrix from the first air outlet 161, and part of the hot air flow can sequentially flow into the aerosol matrix through the first air hole 163 and the second air hole 164, so as to heat the aerosol matrix by both heat conduction and hot air flow on the periphery of the heating element 100, so as to increase the heating range from the center to the periphery.

[0061] Please refer to Figure 6, in one embodiment, the air inlet 162 is disposed on the inner tube 120 at the second end 150; the air outlet includes a first air outlet 161, and the first air outlet 161 is disposed on the inner tube 120 at the first end 140; the air flow channel 160 further includes a first air hole 163 and a second air outlet 165. The first air hole 163 penetrates through the side wall of the inner tube, and the second air outlet 165 is disposed on the outer tube 110 at the first end 140. The central axis of the first air hole 163 is arranged at an angle with the length direction of the heating element 100; the air inlet 162, the first air hole 163 and the second air outlet 165 are communicated in sequence. Air enters the inner tube 120 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow can directly flow into the aerosol matrix from the first air outlet 161, and part of the hot air flow can flow into the aerosol matrix through the first air hole 163 and the second air outlet 165 in sequence, heating the aerosol matrix by heat conduction on the periphery of the heating element 100, and heating the aerosol matrix by the hot air flow at the first end 140 of the heating element 100.

[0062] Please refer to Figure 7 , in one embodiment, the air inlet 162 is disposed on the inner tube 120 at the second end 150; the air outlet includes a first air outlet 161, and the first air outlet 161 is disposed on the inner tube 120 at the first end 140; the first air outlet 161 is communicated with the air inlet 162. The air flow channel 160 further includes a first air hole 163, a second air hole 164 and a second air outlet 165. The first air hole 163 penetrates through the side wall of the inner tube, and the second air hole 164 penetrates through the side wall of the outer tube 110. The central axes of the first air hole 163 and the second air hole 164 are both arranged at an angle with the length direction of the heating element 100; the second air outlet 165 is disposed on the outer tube 110 at the first end 140; the air inlet 162, the first air hole 163, the second air hole 164 and the second air outlet 165 are communicated with each other. Air enters the inner tube 120 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow can directly flow into the aerosol matrix from the first air outlet 161, and part of the hot air flow can flow into the aerosol matrix through the first air hole 163 and the second air outlet 165 in sequence, and part of the hot air flow can flow into the aerosol matrix through the first air hole 163 and the second air hole 164 in sequence, heating the aerosol matrix by heat conduction on the periphery of the heating element 100, and heating the aerosol matrix by the hot air flow on the periphery of the heating element 100 and at the first end 140 of the heating element 100.

[0063] Please refer to Figure 8, in one embodiment, the air inlet 162 is provided on the inner tube 120 at the second end 150; the air flow channel 160 further includes a first air flow hole 163, a second air flow hole 164, and a second air outlet 165. The first air flow hole 163 penetrates the side wall of the inner tube, and the second air flow hole 164 penetrates the side wall of the outer tube 110. The central axes of both the first air flow hole 163 and the second air flow hole 164 are arranged at an angle to the length direction of the heating element 100; the second air outlet 165 is provided on the outer tube 110 at the first end 140; the air inlet 162, the first air flow hole 163, the second air flow hole 164, and the second air outlet 165 are interconnected. Air enters the inner tube 120 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow can flow into the aerosol matrix successively through the first air flow hole 163 and the second air outlet 165, and part of the hot air flow can flow into the aerosol matrix successively through the first air flow hole 163 and the second air flow hole 164, heating the aerosol matrix by heat conduction on the periphery of the heating element 100, and heating the aerosol matrix by hot air flow on the periphery of the heating element 100 and at the first end 140 of the heating element 100.

[0064] Please refer to Figure 9 , in one embodiment, the air inlet 162 is provided on the inner tube 120 at the second end 150; the air outlet includes a second air outlet 165, and the second air outlet 165 is provided on the outer tube 110 at the first end 140; the air flow channel 160 further includes a first air flow hole 163, and the first air flow hole 163 penetrates the side wall of the inner tube 120. The central axis of the first air flow hole 163 is arranged at an angle to the length direction of the heating element 110; the air inlet 162, the first air flow hole 163, and the second air outlet 165 are connected in sequence. Air enters the inner tube 120 from the air inlet 162 and is heated to form a hot air flow. The hot air flow can flow into the aerosol matrix successively through the first air flow hole 163 and the second air outlet 165, heating the aerosol matrix by heat conduction on the periphery of the heating element 100, and heating the aerosol matrix by hot air flow at the first end 140 of the heating element 100.

[0065] In one embodiment, the second air outlet 165 can be a plurality of air flow holes provided on the outer tube 110, so that there is also a connection structure between the outer tube 110 and the inner tube 120, enabling the outer tube 110 and the inner tube 120 to be connected into an integral structure.

[0066] In another embodiment, the second air outlet 165 can also be arranged around the inner tube 120, such that the outer tube 110 is also a hollow structure with both ends penetrating. To further effectively ensure that the outer tube 110 and the inner tube 120 can be connected into an integral structure, a connecting member can be provided at the second end 150. The connecting member can be made of filled ceramic glue, or glass glue, etc.

[0067] Of course, other connecting structures with channels can also be provided between the outer tube 110 and the inner tube 120. The channels also serve as part of the air flow channel 160. The installation position of the connecting structure is not limited and can be set at any position along the direction from the first end 140 to the second end 150. When the connecting structure is provided at the first end 140, the connecting structure and the outer tube 110 are of an integral structure, and the channel forms a second air outlet 165 to be connected to the inner tube 120 in a semi-closed form, or the outer tube 110 at the first end 140 directly extends to the outer wall of the inner tube 120, and the channel forms a second air outlet 165.

[0068] Please refer to Figure 10 , in one embodiment, the air inlet 162 is provided on the outer tube 110 at the second end 150; the air outlet includes a second air outlet 165, and the second air outlet 165 is provided on the outer tube 110 at the first end 140. Air enters the installation space 130 from the air inlet 162, is heated to form a hot air flow, and then the hot air flow is discharged from the second air outlet 165 into the heating element 100 and enters the aerosol matrix.

[0069] In one embodiment, the air inlet 162 is provided on the outer tube 110 at the second end 150. The air flow channel 160 further includes a first air flow hole 163. The first air flow hole 163 penetrates the side wall of the inner tube 120, and the central axis of the first air flow hole 163 is arranged at an angle with the length direction of the heating element 100; the air outlet includes a first air outlet 161, and the first air outlet 161 is provided on the inner tube 120 at the first end 140. The air inlet 162, the first air flow hole 163, and the first air outlet 161 are sequentially communicated. Air enters the installation space 130 from the air inlet 162, is heated to form a hot air flow, and then the hot air flow is discharged from the heating element 100 through the first air flow hole 163 and the first air outlet 161 in sequence and enters the aerosol matrix.

[0070] In one embodiment, the air inlet 162 is provided on the outer tube 110 at the second end 150. The air flow channel 160 further includes a second air flow hole 164. The second air flow hole 164 penetrates the side wall of the outer tube 110, and the central axis of the second air flow hole 164 is arranged at an angle with the length direction of the heating element 100; the air outlet includes a second air outlet 165, and the second air outlet 165 is provided on the outer tube 110 at the first end 140. The air inlet 162, the second air flow hole 164, and the second air outlet 165 are all communicated with each other. Air enters the installation space 130 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow directly flows into the aerosol matrix from the installation space 130 through the second air outlet 165, and the aerosol matrix is heated by the hot air flow at the first end 140 of the heating element 100. Part of the hot air flow directly flows into the aerosol matrix from the installation space 130 through the second air flow hole 164, and the aerosol matrix is heated by the hot air flow from the periphery of the heating element 100.

[0071] In one embodiment, the air inlet 162 is arranged on the outer tube 110 located at the second end 150, and the air flow channel 160 also includes a first air flow hole 163 and a second air flow hole 164, the first air flow hole 163 penetrates the side wall of the inner tube 120, and the second air flow hole 164 penetrates the side wall of the outer tube 110, and the central axes of the first air flow hole 163 and the second air flow hole 164 are both arranged at an angle to the length direction of the heating element 100; the air outlet includes a first air outlet 161, and the first air outlet 161 is arranged on the inner tube 120 located at the first end 140, and the air inlet 162, the first air flow hole 163, the first air outlet 161 and the second air flow hole 164 are all interconnected. Air enters the installation space 130 from the air inlet 162 and is heated to form a hot air flow. Part of the hot air flow flows into the aerosol matrix from the installation space 130 through the first air flow hole 163 and the first air outlet 161 in sequence, and the aerosol matrix is heated by the hot air flow at the first end 140 of the heating element 100. Part of the hot air flow flows directly into the aerosol matrix from the installation space 130 through the second air flow hole 164, and the aerosol matrix is heated by the hot air flow from the surrounding side of the heating element 100.

[0072] See also Figure 11 In one embodiment, the air flow channel 160 includes an air inlet 162, a first air flow hole 163 and a second air flow hole 164. The inner tube 120 and the outer tube 110 located at the first end 140 are both closed structures. The air inlet 162 is arranged on the inner tube 120 located at the second end 150. The air inlet 162, the first air flow hole 163 and the second air flow hole 164 are connected in sequence. Air enters the inner tube 120 from the air inlet 162, is heated to form a hot air flow, and the hot air flow passes through the first air flow hole 163 and the second air flow hole 164 in sequence and flows into the aerosol matrix.

[0073] Of course, in other embodiments, the air flow channel 160 includes an air inlet 162 and a second air flow hole 164. The air inlet 162 is arranged on the outer tube 110 located at the second end 150. The air enters the installation space 130 from the air inlet 162, and after being heated to form a hot air flow, the hot air flow flows into the aerosol matrix through the second air flow hole 164.

[0074] In one embodiment, the first air flow holes 163 and the second air flow holes 164 are staggered along the length direction of the heating element 100 .

[0075] Of course, in order to effectively shorten the air flow path and improve the heating efficiency, the central axes of the first air flow hole 163 and the second air flow hole 164 are arranged collinearly; the central axes of the first air flow hole 163 and the second air flow hole 164 are arranged perpendicular to the length direction of the heating element 100.

[0076] To make the heating more uniform, a plurality of first air flow holes 163 and second air flow holes 164 are provided, such as 2, 3, 4 or even more. The number of the first air flow holes 163 and the second air flow holes 164 can correspond one by one. Of course, the number of the first air flow holes 163 and the second air flow holes 164 can also be designed in a one-to-many or many-to-one manner.

[0077] To further ensure that the air is fully heated into hot air flow, at least the first air flow hole 163 is set at a certain distance from the second end 150, and the air passes through the first air flow hole 163 and flows into the second air outlet 162 or the second air flow hole 164 only after being heated by the heating wire 210. Of course, the second air flow hole 164 can also be set at a certain distance from the second end 150.

[0078] Please refer to Figure 12 , in an embodiment, a plurality of convex structures 121 are provided on the outer wall of the inner tube 120. The convex structures 121 abut against the inner wall of the outer tube 110. The first air flow hole 163 is arranged on the convex structure 121, so that the outlet of the first air flow hole 163 can be directly docked with the second air flow hole 164, shortening the hot air flow path, avoiding the chaotic flow of the hot air flow, and ensuring the effective outflow of the hot air flow. The plurality of convex structures 121 are arranged at intervals along the direction from the first end 140 to the second end 150. The heating wire 210 is arranged in a spiral shape on the convex structure 121, which can further fix the heating wire 210.

[0079] Of course, in other embodiments, the plurality of convex structures 121 are arranged in a spiral shape along the direction from the first end 140 to the second end 150 with the heads and tails connected, which is adapted to the structure of the heating wire 210 and can further fix the heating wire 210.

[0080] Please refer to Figure 13 , in an embodiment, the inner tube 120 includes a plurality of convex portions 122 and concave portions 123. The convex portions 122 and the concave portions 123 are alternately arranged in sequence to form a wavy structure and form at least part of the structure of the inner tube 120. A concave portion 123 is provided between adjacent two convex portions 122, and the heating wire 210 can be fixed in the concave portion 123.

[0081] Further, the first air flow hole 163 can be arranged on the convex portion 122 or the concave portion 123. As shown in FIG. 13, the first air flow hole 163 is arranged on the convex portion 122, is docked with the second air flow hole 164, and the distance therebetween is small, which can shorten the flow path and ensure the effective transfer of heat.

[0082] In one embodiment, there is one heating wire 210, which is spirally arranged along the direction from the first end 140 to the second end 150 to form an end point at the first end 140 and the second end 150 respectively. The conductor 220 includes a first pin 221 and a second pin 222. The first pin 221 is electrically connected to the end point of the heating wire 210 near the first end 140, and the second pin 222 is electrically connected to the end point of the heating wire 210 near the second end 150. The first pin 221 is arranged on the outer wall of the inner tube 120. Since there is a possibility that the first pin 221 contacts the heating wire 210 when it is led out, it is easy to cause a short circuit in the whole circuit. Therefore, the first pin 221 is insulated. Except for the part electrically connected to the heating wire 210 near the first end 140 and the part electrically connected to the power supply component, an insulating layer is provided on the remaining first pin 221. This insulating layer not only has insulating properties but also has high-temperature resistance. Metal oxides or glass, such as kovar alloy, borosilicate glass, etc., can be selected to prepare the insulating layer.

[0083] Further, in order to better fix the first pin 221, a wire groove (not shown in the figure) can be provided on the outer wall of the inner tube 120. This wire groove can not only fix the first pin 221 but also increase the distance between the first pin 221 and the heating wire 210, further effectively ensuring the insulation effect. The wire groove is a straight groove extending along the length direction of the inner tube 120.

[0084] Of course, in other embodiments, the first pin 221 can also be arranged on the inner wall of the inner tube 120. When assembling the outer tube 110 and the inner tube 120, the first pin 221 can be directly led into the inner tube 120 to fix the first pin 221 between them. At the same time, the first pin 221 is led out along the inner wall of the inner tube 120. The inner tube 120 can be made of a high-temperature resistant insulating material and directly serve as the insulating structure between the first pin 221 and the heating wire 210, simplifying the steps of setting the insulating layer.

[0085] In another embodiment, there are two heating wires 210, and both of the two heating wires 210 are spirally arranged along the direction from the first end 140 to the second end 150 to form two end points at the second end 150. The conductor 220 includes a first pin 221 and a second pin 222. The first pin 221 and the second pin 222 are respectively electrically connected to the parts of the two heating wires 210 near the second end 150. When the first pin 221 and the second pin 222 are led out, there is no possibility of other contact with the heating wires 210, so insulation is not required, which can simplify the production process and structure of the device.

[0086] Of course, in other embodiments, there may also be one heating wire 210. After folding the single heating wire 210 in half, it is spirally arranged along the direction from the first end 140 to the second end 150, so that both of its endpoints are arranged at the second end 150. The first pin 221 and the second pin 222 can be directly electrically connected to the two endpoints respectively. When the first pin 221 and the second pin 222 are led out, there is no possibility of other contact with the heating wire 210, and insulation setting is not required. At the same time, the single heating wire 210 folded in half can further simplify the production process and structure of the device.

[0087] The above uses specific examples to elaborate on 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 technical field to which the present application pertains, based on the idea of the present application, several simple deductions, deformations or substitutions can also be made.

Claims

1. A heating device, characterized in that, Comprising: A heating element, the heating element includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube, and an installation space is provided between the inner tube and the outer tube; the heating element has a first end and a second end oppositely arranged along its length direction, the first end is used for inserting the heating element into the aerosol matrix; an air flow channel is provided in the heating element, the air flow channel includes an air outlet and an air inlet, the air outlet is arranged on at least one of the inner tube and the outer tube located at the first end, and the air inlet is arranged on at least one of the outer tube and the inner tube located at the second end; and A heating element, the heating element is arranged in the installation space; the heating element is energized to generate heat, and can heat the aerosol matrix and heat air to form a hot air flow through heat conduction, and the hot air flow passes through the air flow channel to heat the aerosol matrix.

2. The heating device according to claim 1, characterized in that, The air inlet is arranged on the inner tube located at the second end; the air outlet includes a first air outlet, and the first air outlet is arranged on the inner tube located at the first end; the air inlet and the first air outlet are communicated; the air flow channel penetrates through the inner tube along the direction from the first end to the second end.

3. The heating device according to claim 2, characterized in that, The air flow channel further includes a first air flow hole and a second air flow hole, the first air flow hole penetrates through the side wall of the inner tube, the second air flow hole penetrates through the side wall of the outer tube, and the central axes of the first air flow hole and the second air flow hole are both arranged at an angle with the length direction of the heating element; the air inlet, the first air flow hole and the second air flow hole are communicated in sequence.

4. The heating device according to any one of claims 1 to 3, characterized in that The air inlet is arranged on the inner tube located at the second end; the air flow channel further includes a first air flow hole, the first air flow hole penetrates through the side wall of the inner tube, and the central axis of the first air flow hole is arranged at an angle with the length direction of the heating element; the air outlet includes a second air outlet, and the second air outlet is arranged on the outer tube located at the first end; the air inlet, the first air flow hole and the second air outlet are communicated in sequence.

5. The heating device according to claim 1, characterized in that, The air inlet is arranged on the inner tube located at the second end; the air outlet includes a second air outlet, and the second air outlet is arranged on the outer tube located at the first end; the air flow channel further includes a first air flow hole and a second air flow hole, the first air flow hole penetrates through the side wall of the inner tube, the second air flow hole penetrates through the side wall of the outer tube, and the central axes of the first air flow hole and the second air flow hole are both arranged at an angle with the length direction of the heating element; the air inlet, the first air flow hole, the second air flow hole and the second air outlet are communicated with each other.

6. The heating device according to claim 1, characterized in that, The air inlet is arranged on the outer tube located at the second end; the air outlet includes a first air outlet, and the first air outlet is arranged on the inner tube located at the first end; the air flow channel further includes a first air flow hole, the first air flow hole penetrates through the side wall of the inner tube, and the central axis of the first air flow hole is arranged at an angle with the length direction of the heating element; the air inlet, the first air flow hole and the first air outlet are communicated in sequence.

7. The heating device according to claim 6, characterized in that, The air flow channel further includes a second air hole which penetrates through the side wall of the outer tube, and the central axis of the second air hole is arranged at an angle with the length direction of the heating element; the air inlet, the first air hole, the second air hole and the first air outlet are communicated with each other.

8. The heating device according to any one of claims 3, 5 or 7, characterized in that The first air hole and the second air hole are arranged staggered along the length direction of the heating element; or, the central axes of the first air hole and the second air hole are collinear; the central axes of the first air hole and the second air hole are both arranged perpendicular to the length direction of the heating element.

9. The heating device according to any one of claims 3, 5, 6 or 7, characterized in that A plurality of convex structures are provided on the outer wall of the inner tube, and the convex structures abut against the inner wall of the outer tube; the plurality of convex structures are arranged at intervals along the direction from the first end to the second end, or, the plurality of convex structures are arranged in a spiral shape along the direction from the first end to the second end end to end; the heating element is arranged in a spiral shape on the convex structure; the first air hole is arranged on the convex structure; or, the inner tube includes a plurality of convex portions and concave portions, and the convex portions and the concave portions are alternately arranged in sequence to form a wavy structure, and the concave portions are provided between adjacent two of the convex portions; the first air hole is arranged on the convex portion.

10. The heating device according to claim 1, characterized in that, The heating element includes a heating wire, a first lead and a second lead, and the first lead and the second lead are electrically connected to the heating wire; There is one heating wire, and the heating wire is arranged in a spiral shape along the direction from the first end to the second end; the first lead is electrically connected to the heating wire near the first end, and the second lead is electrically connected to the heating wire near the second end; the first lead is arranged on the outer wall or the inner wall of the inner tube; or, there are two heating wires, and both of the two heating wires are arranged in a spiral shape along the direction from the first end to the second end; the two heating wires at the second end are respectively electrically connected to the first lead and the second lead.

11. A heating device, characterized in that, Comprising: A heating element, the heating element includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube to form an installation space between the inner tube and the outer tube; the heating element has a first end and a second end arranged opposite to each other along its length direction, and the first end is used for inserting the heating element into the aerosol matrix; an air flow channel is arranged in the heating element, the air flow channel includes an air inlet, a first air hole and a second air hole, the first air hole penetrates through the side wall of the inner tube, the second air hole penetrates through the side wall of the outer tube, and the central axes of the first air hole and the second air hole are both arranged at an angle with the length direction of the heating element; the air inlet is arranged on the inner tube at the second end; the air inlet, the first air hole and the second air hole are communicated in sequence; and A heating element, the heating element is arranged in the installation space; the heating element is powered on to generate heat, and can heat the aerosol matrix and heat air to form a hot air flow through heat conduction, and the hot air flow passes through the air flow channel to heat the aerosol matrix.

12. The heating device according to claim 11, characterized in that, The first air flow holes and the second air flow holes are arranged staggeredly along the length direction of the heating element; Alternatively, the central axes of the first air flow holes and the second air flow holes are collinear; the central axes of the first air flow holes and the second air flow holes are both perpendicular to the length direction of the heating element.

13. The heating device according to claim 11 or 12, characterized in that, A plurality of convex structures are provided on the outer wall of the inner tube, and the convex structures abut against the inner wall of the outer tube; the plurality of convex structures are arranged at intervals along the direction from the first end to the second end, or, the plurality of convex structures are arranged in a spiral shape along the direction from the first end to the second end with the head and tail connected; the heating element is arranged in a spiral shape on the convex structures; the first air flow holes are arranged on the convex structures; Alternatively, the inner tube includes a plurality of convex portions and concave portions, and the convex portions and the concave portions are alternately arranged in sequence to form a wavy structure, and a concave portion is provided between adjacent two convex portions; the first air flow holes are arranged on the convex portions.

14. The heating device according to claim 11, wherein, The heating element includes a heating wire, a first lead and a second lead, and the first lead and the second lead are electrically connected to the heating wire; There is one heating wire, and the heating wire is spirally arranged along the direction from the first end to the second end; the first lead is electrically connected to the heating wire near the first end, and the second lead is electrically connected to the heating wire near the second end; the first lead is arranged on the outer wall or the inner wall of the inner tube; Alternatively, there are two heating wires, and both of the two heating wires are spirally arranged along the direction from the first end to the second end; the two heating wires at the second end are respectively electrically connected to the first lead and the second lead.

15. An aerosol generating device, characterized in that, Comprising: A power supply assembly; And the heating device according to any one of claims 1-10 or the heating device according to any one of claims 11-14.

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