Heating body and aerosol generating device

Abstract

A heating element and an aerosol generating device relate to the technical field of aerosol generating equipment, the heating element comprises a heat conducting substrate, the heat conducting substrate is provided with a heating cavity, a mounting port and an air inlet channel, the heating cavity is used for accommodating an aerosol generating substrate, and the mounting port is used for inserting the aerosol generating substrate into the heating cavity; a first heating area and a second heating area are arranged on the heat conduction base body in the insertion direction of the aerosol generation base body, the air inlet channel comprises an air flow groove, the air flow groove is formed in the cavity wall of the heating cavity and communicates with the installation opening, and the air flow groove is used for allowing air flow to sequentially pass through the first heating area and the second heating area and then enter the aerosol generation base body; the heating pieces comprise the first heating piece and the second heating piece, the first heating piece is arranged in the first heating area of the heat conduction base body, and the second heating piece is arranged in the second heating area of the heat conduction base body. By arranging the first heating piece and the second heating piece, heating can be matched in different use stages, and the problem that the temperature of generated aerosol is too high can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating equipment, and in particular to a heating element and an aerosol generating device. Background Art

[0002] At present, aerosol generating devices often use sidewall hot air flow heating to heat aerosol generating substrates such as aerosol generating rods. The heating element based on the sidewall hot air flow heating method is usually set to an overall heating form, that is, when heating the aerosol generating substrate, the heating element heats up as a whole, but the overall heating can easily cause the aerosol generated by the aerosol generating substrate to have an excessively high temperature. Utility Model Content

[0003] In order to improve the problem of excessively high temperature of aerosol generated by an aerosol generating device, the present application provides a heating element and an aerosol generating device.

[0004] According to the first aspect, an embodiment provides a heating element, comprising:

[0005] A heat-conductive substrate having a heating cavity, a mounting port, and an air inlet channel. The heating cavity is used to accommodate an aerosol-generating substrate. The mounting port is used to allow the aerosol-generating substrate to be inserted into the heating cavity. The heat-conductive substrate is provided with a first heating zone and a second heating zone along the insertion direction of the aerosol-generating substrate. The air inlet channel includes at least one airflow groove provided on a cavity wall of the heating cavity. The airflow groove is used to allow airflow to sequentially pass through the first heating zone and the second heating zone before entering the aerosol-generating substrate.

[0006] The heating element includes a first heating element and a second heating element. The first heating element is arranged in the first heating area of the heat-conducting base, and the second heating element is arranged in the second heating area of the heat-conducting base.

[0007] In one embodiment, a support protrusion is provided at one end of the heating chamber away from the mounting port, and the support protrusion is used to support the end face of the aerosol generating substrate so that an air intake gap can be formed between the cavity wall of the heating chamber away from the mounting port and the aerosol generating substrate, and the air intake gap is connected to the airflow groove.

[0008] In one embodiment, the first heating element and the second heating element are both resistive heating elements, and the first heating element and the second heating element are arranged in parallel.

[0009] In one embodiment, the thermally conductive substrate has a first electrical connection member, a second electrical connection member, and a third electrical connection member. The first heating element and the second heating element each have two electrical connection ends. The two electrical connection ends of the first heating element are electrically connected to the first electrical connection member and the third electrical connection member, respectively. The two electrical connection ends of the second heating element are electrically connected to the second electrical connection member and the third electrical connection member, respectively. The first electrical connection member and the second electrical connection member are used to be electrically connected to the same electrode of an external power supply, and the third electrical connection member is used to be electrically connected to the other electrode of the external power supply.

[0010] In one embodiment, the first heating element and the second heating element are resistance heating circuits.

[0011] In one embodiment, the first heating element and the second heating element are metal thick film printed resistance heating circuits, the printed substrates of the first heating element and the second heating element are made of metal, and the printed substrates of the first heating element and the second heating element have an insulating layer on their surfaces;

[0012] Alternatively, the first heating element and the second heating element are resistance heating circuits printed by ceramic thick film, and the material of the printing substrates of the first heating element and the second heating element is ceramic.

[0013] According to the second aspect, an embodiment provides an aerosol generating device, comprising a shell, a power supply and a heating element, wherein the power supply and the heating element are arranged in the shell, the heating element comprises the heating element described in any one of the above embodiments, and the power supply is used to supply power to the first heating element and the second heating element.

[0014] In one embodiment, a support member is further included, and the support member is used to fix the heating element. When the heating element is fixed to the support member, an isolation space is provided on the outside of the heating element.

[0015] In one embodiment, a supporting step is provided on the supporting member, a supporting protrusion is provided on the thermal conductive base, and the thermal conductive base is hung on the supporting step through the supporting protrusion.

[0016] In one embodiment, a fixing member is further included, which is used to fix the heat-conducting substrate on the support member; a matrix insertion channel connected to the outside of the shell is provided on the fixing member corresponding to the installation port, and the air intake channel is connected to the outside of the shell through the matrix insertion channel.

[0017] According to the heating element of the above embodiment, by setting the first heating element and the second heating element, it is possible to heat the aerosol generating substrate by heating and generating a hot air flow in different use stages. For example, in the preheating stage of the aerosol generating substrate, the first heating element is mainly used for heating so as to quickly generate aerosol. After heating for a period of time, the second heating element is mainly used for heating. The aerosol generated by the aerosol generating substrate portion corresponding to the second heating element needs to pass through the aerosol generating substrate portion corresponding to the first heating element before being discharged, which helps to reduce the discharge temperature of the aerosol and improve the problem of excessive temperature of the generated aerosol. In addition, heat transfer also helps to fully bake the aerosol generating substrate in the aerosol generating substrate, thereby improving the aerosol generation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a heating element according to an embodiment;

[0019] Figure 2 This is a schematic cross-sectional view of a heating element according to an embodiment;

[0020] Figure 3 is a schematic cross-sectional view of an aerosol generating device according to an embodiment;

[0021] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0022] Figure 5 is a front view of an aerosol generating device according to an embodiment;

[0023] Figure 6 For the Figure 5 Schematic diagram of a partial cross-section of the aerosol generating device along the BB direction.

[0024] In the figure, 100, heating element; 110, heat-conducting base; 111, heating chamber; 112, mounting port; 113, air inlet channel; 1131, air flow groove; 1132, air inlet gap; 114, supporting protrusion; 115, supporting protrusion; 120, heating assembly; 121, first heating element; 122, second heating element; 123, first power connection member; 124, second power connection member; 125, third power connection member;

[0025] 200, housing; 210, matrix socket; 220, support member; 221, isolation space; 222, support step; 223, hollow inner cavity; 230, fixing member; 231, matrix insertion channel; 232, fixing ring; 233, matrix positioning member; 2331, elastic clamping portion; 234, guide surface; 240, thermal insulation base;

[0026] 300, power supply; 301, battery cell; 302, circuit board;

[0027] 400. Aerosol-generating 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] Aerosol generating devices based on HNB (Heat Not Burning) technology usually have a heating body to heat the aerosol generating matrix 400 to generate an aerosol. Common heating methods include setting a heating body at the bottom or side wall of the aerosol generating device to directly heat the aerosol generating matrix 400. In order to improve the uniformity of heating, there is also a heating method that uses a sidewall hot air flow heating method to heat the aerosol generating matrix 400. However, the heating body 100 used in the sidewall hot air flow heating method is usually set as an integral part. When heating the aerosol generating matrix 400, the heating body 100 is heated as a whole, which can easily cause the temperature of the generated aerosol to be too high, which is not conducive to the user's inhalation and poses a risk of burns.

[0032] In an embodiment of the present application, a first heating element 121 and a second heating element 122 are provided to heat different areas of a heat-conducting substrate 110 having an air inlet channel 113, so that hot air flows of various temperatures can be formed to heat the aerosol generating matrix 400 according to usage requirements, and segmented heating control of the aerosol generating matrix 400 can be achieved to improve the problem of excessively high temperature of the aerosol generated by the aerosol generating matrix 400, and also help to increase the aerosol generation speed during the preheating stage.

[0033] In one embodiment, a heating element 100 is disclosed, please refer to Figure 1-Figure 2 The heating element 100 includes a heat-conducting base 110 and a heating component 120 disposed on the heat-conducting base 110 .

[0034] Please refer to Figure 1-Figure 2 The heat-conductive substrate 110 can be understood as a structural component capable of heating the heating section of the aerosol-generating substrate 400. The heating section of the aerosol-generating substrate 400 refers to the portion of the aerosol-generating substrate 400 that contains the aerosol-generating substrate and is capable of generating aerosol. The heat-conductive substrate 110 has a heating cavity 111 and an installation opening 112. The heating cavity 111 is used to accommodate the aerosol-generating substrate 400, and the installation opening 112 is used to allow the aerosol-generating substrate 400 to be inserted into the heating cavity 111.

[0035] In some embodiments, the heat-conducting substrate 110 can be made of a material such as aluminum alloy, copper, aluminum nitride, or other highly thermally conductive materials with a high thermal conductivity coefficient to better transfer the heat generated by the heating component 120 to the aerosol-generating substrate 400. The heating chamber 111 can be configured to accommodate the heating section of the aerosol-generating substrate 400, and the mounting opening 112 can be configured to allow the heating section of the aerosol-generating substrate 400 to be inserted into the heating chamber 111. In other embodiments, the heating chamber 111 can also be configured to accommodate other portions of the aerosol-generating substrate 400.

[0036] In order to improve the problem of excessively high aerosol temperature generated by the heated aerosol generating substrate 400, please refer to Figure 1-Figure 2The heat-conducting substrate 110 is provided with a first heating zone and a second heating zone along the insertion direction of the aerosol generating matrix 400. The heating assembly 120 includes a first heating element 121 and a second heating element 122. The first heating element 121 is provided in the first heating zone of the heat-conducting substrate 110, and the second heating element 122 is provided in the second heating zone of the heat-conducting substrate 110. That is, the first heating zone is heated by the first heating element 121, and the second heating element 122 heats the second heating zone, forming a zoned heating structure. In addition, the heat-conducting substrate 110 has an air inlet channel 113, and the air inlet channel 113 includes at least one air flow groove 1131. The air flow groove 1131 is provided on the cavity wall of the heating cavity 111 and is connected to the mounting port 112. The air flow groove 1131 is used to supply air flow to pass through the first heating zone and the second heating zone in sequence and then enter the aerosol generating matrix 400.

[0037] This provides multiple options for heating and generating hot airflow, facilitating tailored application. For example, during the preheating phase of the aerosol-generating matrix 400, the first heating element 121 is primarily used for heating, enabling rapid aerosol generation. After a period of heating, the second heating element 122 is primarily used for heating. The aerosol generated by the portion of the aerosol-generating matrix 400 corresponding to the second heating element 122 must pass through the portion of the aerosol-generating matrix 400 corresponding to the first heating element 121 before being discharged. This helps lower the discharge temperature of the aerosol, addressing issues with excessively high aerosol temperatures, preventing burns from the aerosol or the mouthpiece when the user inhales the aerosol. Furthermore, it helps fully bake the aerosol-generating substrate within the aerosol-generating matrix 400, enhancing aerosol generation efficiency.

[0038] For example, please refer to Figure 1-Figure 2 The first heating zone is disposed on a side of the heat-conducting base 110 close to the mounting opening 112, and the second heating zone is disposed on a side of the heat-conducting base 110 away from the mounting opening 112, with the second heating zone and the first heating zone spaced apart. A plurality of airflow grooves 1131 are disposed on the wall of the heating chamber 111 at intervals around the circumference of the heating chamber 111. Each airflow groove 1131 is disposed along the axial direction of the heating chamber 111, with a portion located in the first heating zone and a portion located in the second heating zone. The airflow grooves 1131 are also connected to the mounting opening 112, meaning that the mounting opening 112 also serves as the airflow inlet of the airflow grooves 1131, allowing the airflow to flow through the first heating zone and the second heating zone in sequence after entering the airflow grooves 1131.

[0039] In other embodiments, the air flow groove 1131 may be arranged in other ways, such as in a spiral shape passing through the first heating zone and the second heating zone, as long as the arrangement meets the use and design requirements. As for the air flow inlet of the air flow groove 1131, an air inlet connected to the air flow groove 1131 may be provided on the heat conductive base 110 as the air flow inlet. The air inlet can be arranged in the first heating zone or on the side of the first heating zone facing away from the second heating zone.

[0040] In order to allow the hot air flow in the air flow slot 1131 to enter the aerosol generating substrate 400, in one embodiment, please refer to Figure 2 A support protrusion 114 is provided at one end of the heating chamber 111 away from the mounting port 112. The support protrusion 114 is used to support the end face of the aerosol generating substrate 400 so that an air intake gap 1132 can be formed between the cavity wall of the heating chamber 111 away from the mounting port 112 and the aerosol generating substrate 400. The air intake gap 1132 is connected to the air flow groove 1131 so that the hot air flow heated in the air flow groove 1131 can pass through the air intake gap 1132 and enter the aerosol generating substrate 400.

[0041] For example, please refer to Figure 2 The support protrusions 114 are all disposed at the junction of the peripheral wall and the end wall of the heating chamber 111, and multiple support protrusions 114 are provided on the wall of the heating chamber 111 corresponding to each airflow groove 1131. Each support protrusion 114 collectively provides circumferential support for the aerosol generating substrate 400 in the heating chamber 111, helping to stably position the aerosol generating substrate 400 in the heating chamber 111. In other examples, the number, shape, and position of the support protrusions 114 can be flexibly adjusted according to usage needs, and the aerosol generating substrate 400 can be limited so that an air inlet gap 1132 is formed between the end surface of the aerosol substrate and the wall of the heating chamber 111 away from the mounting opening 112.

[0042] In one embodiment, both the first heating element 121 and the second heating element 122 are resistive heating elements, and the first heating element 121 and the second heating element 122 are arranged in parallel. The use of resistive heating elements allows the heating power to be adjusted by controlling the input current. The parallel arrangement of the first heating element 121 and the second heating element 122 allows the first heating element 121 and the second heating element 122 to operate separately or simultaneously, which helps to improve heating flexibility.

[0043] In one embodiment, please refer to Figure 1The first heating element 121 and the second heating element 122 are resistive heating circuits, which not only have high energy density and facilitate heating, but also facilitate integration. For example, the first heating element 121 and the second heating element 122 are both arranged in an arc shape on the outer peripheral wall of the heat-conducting base 110. In other examples, the first heating element 121 and the second heating element 122 can also be arranged in the heat-conducting base 110 or on the wall of the heating chamber 111.

[0044] For the resistive heating circuit, in some embodiments, a resistive heating circuit made by a thick film printing process can be used. The resistive heating circuit made by the thick film printing process is easy to adapt to the surface morphology of the thermally conductive substrate 110, and has high temperature tolerance, and is highly compatible with the heating requirements of the heating element 100. For example, the first heating element 121 and the second heating element 122 can be resistive heating circuits printed by metal thick film, and the material of the printed substrate of the first heating element 121 and the second heating element 122 can be metal, but the surface of the printed substrate of the first heating element 121 and the second heating element 122 needs to have an insulating layer, that is, the thermally conductive substrate 110 can be a metal material with an insulating layer on the surface. The first heating element 121 and the second heating element 122 can also be resistive heating circuits printed by ceramic thick film, and the material of the printed substrate of the first heating element 121 and the second heating element 122 can be ceramic.

[0045] In other embodiments, the first heating element 121 and the second heating element 122 may also be electric heating wires, resistance wires, electric heating tubes or other resistive heating elements.

[0046] In one embodiment, please refer to Figure 1 The thermally conductive base 110 has a first electrical connector 123, a second electrical connector 124, and a third electrical connector 125. The first heating element 121 and the second heating element 122 each have two electrical terminals. The two electrical terminals of the first heating element 121 are electrically connected to the first electrical connector 123 and the third electrical connector 125, respectively. The two electrical terminals of the second heating element 122 are electrically connected to the second electrical connector 124 and the third electrical connector 125, respectively. The first electrical connector 123 and the second electrical connector 124 are used to electrically connect to the same electrode of the external power source 300, and the third electrical connector 125 is used to electrically connect to the other electrode of the external power source 300. The first heating element 121 and the second heating element 122 share the third electrical connector 125, which helps save materials and reduce costs while achieving parallel connection.

[0047] For example, please refer to Figure 1The first electrical connection member 123, the second electrical connection member 124 and the third electrical connection member 125 are all solder pads and are arranged on the portion of the thermally conductive base 110 between the first heating element 121 and the second heating element 122. Each solder pad is connected to the corresponding first heating element 121 and the second heating element 122 through a conductor, and the conductor can be silver, copper or other conductive materials.

[0048] Another embodiment discloses an aerosol generating device, please refer to Figure 3-Figure 6 , including a shell 200, a power supply 300 and a heating element 100, the power supply 300 and the heating element 100 are arranged in the shell 200, the heating element 100 includes the heating element 100 of any one of the above embodiments, and the power supply 300 is used to supply power to the first heating element 121 and the second heating element 122.

[0049] The shell 200 can be understood as a collection of related components that constitute the basic structural framework and outer contour of the aerosol generating device. With the help of the shell 200, the aerosol generating device can be held, moved, operated and used.

[0050] For example, please refer to Figure 3 and Figure 4 The power supply 300 is disposed on one side of the inner cavity of the housing 200, and the heating element 100 is disposed on the other side of the inner cavity of the housing 200, near one end of the housing 200. The housing 200 is provided with a substrate insertion port 210, which is arranged opposite to the mounting port 112 of the heating element 100, for inserting the aerosol-generating substrate 400 into the heating element 100 from outside the housing 200. In some embodiments, after the aerosol-generating substrate 400 is inserted into the heating element 100, the heating section of the aerosol-generating substrate 400 is located within the heating cavity 111, and the mouthpiece section of the aerosol-generating substrate 400 is located outside the housing 200 for user inhalation. In other embodiments, a mouthpiece may also be provided on the housing 200 for user inhalation.

[0051] In one embodiment, please refer to Figure 4-Figure 6 , further comprising a support member 220 for securing the heating element 100. When the heating element 100 is secured to the support member 220, an isolation space 221 is defined on the outside of the heating element 100. The outside of the heating element 100 includes the outer peripheral surface of the heating element 100 and the lateral area away from the mounting opening 112. The support member 220 allows the heating element 100 to be secured within the housing 200 and separated from other parts by the isolation space 221, thereby reducing heat loss from the heating element 100 due to direct contact.

[0052] In a specific embodiment, please refer to Figure 4 and Figure 6The support member 220 is provided with a support step 222, and the heat-conducting base 110 is provided with a support protrusion 115. The heat-conducting base 110 is hung on the support step 222 via the support protrusion 115. The heat-conducting base 110 is arranged in a hanging manner in the housing 200 to reduce contact with the housing 200 and other components inside the housing 200, thereby reducing the impact of heat generation of the heat-conducting base 110 on the use of the aerosol generating device.

[0053] For example, please refer to Figure 4 and Figure 6 The support member 220 is a hollow columnar structure having a hollow inner cavity 223. The support member 220 is fixedly secured between the power supply 300 and the wall of the housing 200. The support step 222 is integrally formed in the hollow inner cavity 223 of the support member 220 and circumferentially surrounds the wall of the hollow inner cavity 223. One end of the heat conductive substrate 110 having the mounting opening 112 extends outwardly to form a support protrusion 115. The heat conductive substrate 110 is inserted into the hollow inner cavity 223, and the support protrusion 115 is secured to the support step 222. This ensures that the heat conductive substrate 110 is spaced apart from the wall of the hollow inner cavity 223 and is suspended in the support member 220.

[0054] In one embodiment, a fixing member 230 is further included, and the fixing member 230 is used to fix the heat conductive base 110 to the support member 220. The fixing member 230 can be a structural member capable of fixing the heat conductive base 110 to the support member 220, such as a fixing cover, a fixing screw, etc.

[0055] In one embodiment, please refer to Figure 4 and Figure 6 A substrate insertion channel 231 is provided on the fixing member 230 corresponding to the mounting opening 112, communicating with the exterior of the housing 200. The air inlet channel 113 communicates with the exterior of the housing 200 through the substrate insertion channel 231. Exemplarily, the fixing member 230 is a fixing cover, which is clamped between the support member 220 and the housing 200. The fixing cover has a fixing ring 232 protruding toward the support step 222. The fixing ring 232 is used to press and fix the support protrusion 115 against the support step 222 to secure the heat-conducting substrate 110. The substrate insertion channel 231 is provided through the middle of the fixing cover and is arranged opposite the substrate insertion opening 210 on the housing 200, so that the aerosol-generating substrate 400 can be inserted into the heating chamber 111 through the substrate insertion opening 210 along the substrate insertion channel 231.

[0056] In addition, the inner diameters of the substrate insertion channel 231 and the substrate insertion port 210 are both larger than the inner diameter of the heating chamber 111, so that when the aerosol generating substrate 400 is inserted into the heating chamber 111, there is a gap between the aerosol generating substrate 400 and the channel wall of the substrate insertion channel 231, so that the air inlet channel 113 can communicate with the outside of the housing 200 through the substrate insertion channel 231. Figure 6 The dotted arrow in the figure indicates the direction of airflow. When in use, the airflow can enter the aerosol generating matrix 400 through the matrix socket 210, the matrix insertion channel 231, and the air inlet channel 113 in sequence, and then carry the aerosol to be discharged from the nozzle section of the aerosol generating matrix 400.

[0057] For a further embodiment, please refer to Figure 4 and Figure 6 A matrix positioning member 233 is provided in the matrix insertion channel 231. The matrix positioning member 233 has an elastic clamping portion 2331 for clamping the aerosol-generating matrix 400. Exemplarily, the matrix positioning member 233 is a positioning ring having four elastic clamping portions 2331 spaced apart on its inner wall. The matrix positioning member 233 is embedded in the matrix insertion channel 231, allowing the aerosol-generating matrix 400 to pass through the matrix positioning member 233 and be clamped and secured by the elastic clamping portions 2331. In various embodiments, the matrix positioning ring may be entirely made of silicone, or only the elastic clamping portion 2331 may be made of silicone. Alternatively, the matrix positioning ring may be made of, for example, fluororubber, neoprene, or other heat-resistant elastic materials. The number of elastic clamping portions 2331 may also be adjusted as needed.

[0058] In some embodiments, please refer to Figure 4 and Figure 6 The fixing member 230 may further be provided with a guide surface 234 in the portion between the matrix positioning member 233 and the fixing ring 232. The guide surface 234 may be an inclined surface or an arc surface so that the aerosol generating matrix 400 can be accurately inserted into the fixing ring 232 after passing through the matrix positioning member 233.

[0059] In one embodiment, please refer to Figure 3 and Figure 4 The support member 220 is provided with an insulating base 240 at one end away from the fixing member 230. The insulating base 240 and the support member 220 are arranged to form an insulating cavity for accommodating the heating element 100. The insulating base 240 cooperates with the support member 220 to provide heat insulation, which helps to gather heat and improve the heating effect.

[0060] In one embodiment, please refer to Figure 3The power supply 300 can be understood as a collection of related components such as the circuit board 302 and the battery cell 301, and is mainly used to support the heating function of the aerosol generating device, such as the heating component 120 starting and stopping heating the aerosol generating matrix 400, adjusting the heating power of the first heating element 121 and the second heating element 122, etc. In other embodiments, the power supply 300 can also be used to support other functions of the aerosol generating device, such as displaying status information of the aerosol generating device.

[0061] In a specific embodiment, please refer to Figure 3 The power supply 300 can be arranged inside the shell 200. For example, the power supply 300 and the heating element are both arranged inside the shell 200. The power supply 300 and the heating element can be connected by a wire to achieve power supply and heating control.

[0062] Of course, the power supply 300 can also be configured as a functional assembly that is relatively independent of the housing 200 and installed on the outside of the housing 200 in a detachable or non-detachable manner.

[0063] In other embodiments, the power supply 300 can also be understood as a battery core 301, which is mainly used to supply power to the heating element 100 and the circuit board 302 and other electrical components of the aerosol generating device.

[0064] 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 element, characterized in that: include: A heat-conducting substrate having a heating cavity, a mounting port, and an air inlet passage; the heating cavity is used to accommodate an aerosol-generating substrate; the mounting port is used to allow the aerosol-generating substrate to be inserted into the heating cavity; the heat-conducting substrate is provided with a first heating zone and a second heating zone along the insertion direction of the aerosol-generating substrate; the air inlet passage includes at least one airflow groove, which is provided on the cavity wall of the heating cavity and communicates with the mounting port; the airflow groove is used to allow airflow to pass through the first heating zone and the second heating zone in sequence and then enter the aerosol-generating substrate; The heating component includes a first heating element and a second heating element. The first heating element is arranged in the first heating area of the heat-conducting base, and the second heating element is arranged in the second heating area of the heat-conducting base.

2. The heating element according to claim 1, wherein A support protrusion is provided at one end of the heating chamber away from the mounting port, and the support protrusion is used to support the end face of the aerosol generating substrate so that an air intake gap can be formed between the cavity wall of the heating chamber away from the mounting port and the aerosol generating substrate, and the air intake gap is connected to the airflow groove.

3. The heating element according to claim 1 or 2, wherein: The first heating element and the second heating element are both resistive heating elements, and the first heating element and the second heating element are arranged in parallel.

4. The heating element according to claim 3, wherein The thermally conductive base has a first electrical connection member, a second electrical connection member and a third electrical connection member. The first heating element and the second heating element each have two electrical connection ends. The two electrical connection ends of the first heating element are electrically connected to the first electrical connection member and the third electrical connection member, respectively. The two electrical connection ends of the second heating element are electrically connected to the second electrical connection member and the third electrical connection member, respectively. The first electrical connection member and the second electrical connection member are used to be electrically connected to the same electrode of an external power supply, and the third electrical connection member is used to be electrically connected to the other electrode of the external power supply.

5. The heating element according to claim 3, wherein The first heating element and the second heating element are resistance heating circuits.

6. The heating element according to claim 4, wherein The first heating element and the second heating element are metal thick film printed resistance heating circuits, the printing substrates of the first heating element and the second heating element are made of metal, and the surfaces of the printing substrates of the first heating element and the second heating element have an insulating layer; Alternatively, the first heating element and the second heating element are resistance heating circuits printed by ceramic thick film, and the material of the printing substrates of the first heating element and the second heating element is ceramic.

7. An aerosol generating device, characterized in that It includes a shell, a power supply and a heating element, the power supply and the heating element are arranged in the shell, the heating element includes the heating element according to any one of claims 1 to 6, and the power supply is used to supply power to the first heating element and the second heating element.

8. The aerosol generating device according to claim 7, wherein It also includes a support member, which is used to fix the heating element. When the heating element is fixed to the support member, an isolation space is provided outside the heating element.

9. The aerosol generating device according to claim 8, wherein The support member is provided with a support step, the heat-conducting base is provided with a support convex portion, and the heat-conducting base is hung on the support step through the support convex portion.

10. The aerosol generating device according to claim 9, wherein It also includes a fixing member, which is used to fix the heat-conducting substrate on the support member; a substrate insertion channel connected to the outside of the shell is provided on the fixing member corresponding to the installation port, and the air inlet channel is connected to the outside of the shell through the substrate insertion channel.

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