Heating device and aerosol-generating apparatus

Abstract

The utility model relates to the technical field of aerosol generating equipment, and provides a heating device and aerosol generating equipment. The heating device comprises a supporting sleeve, the supporting sleeve is provided with a first opening and a second opening which are opposite in the first direction, and the first opening is used for allowing the aerosol generating rod to penetrate; the heating assembly is arranged in the supporting sleeve, the heating assembly is provided with a heating cavity capable of containing the aerosol generating rod, and the opening end of the heating cavity faces the first opening; and the heat insulation support is arranged at the position, close to the second opening, in the supporting sleeve, and the heat insulation support is connected with the end, facing the second opening, of the heating assembly. According to the technical scheme, the heat insulation support is used for supporting and fixing the bottom of the heating assembly, a certain distance is kept between the high-temperature bottom area of the heating assembly and the supporting sleeve, direct contact between the heating assembly and the supporting sleeve is avoided, and therefore the possibility that the supporting sleeve is deformed or melted due to high-temperature baking is reduced; and the service life of the supporting sleeve is prolonged.

Description

Technical Field

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

[0002] Currently, some heated non-combustible aerosol generating devices employ a structure with a heat exchange core inside the heating element to heat the aerosol generating rod with a hot airflow. To secure the heating element and provide some thermal insulation, a non-metallic support structure (such as PEEK) is typically used to support the bottom or sides of the heating element. However, because the heat exchange core is usually located near the bottom of the heating element, the temperature at the bottom of the heating element is relatively high. This can easily cause the support structure to overheat, leading to deformation or melting, thus affecting its service life. Utility Model Content

[0003] In order to solve the problems of unreasonable support structure of heating tube in existing aerosol generating equipment, easy deformation or melting due to high temperature during heating, and reduced service life, this application provides a heating device and aerosol generating equipment.

[0004] An embodiment of the first aspect of the technical solution of this application provides a heating device, including: a support sleeve having a first opening and a second opening opposite each other in a first direction, the first opening being for an aerosol generating rod to pass through; a heating element disposed inside the support sleeve, the heating element having a heating cavity for accommodating the aerosol generating rod, and the opening end of the heating cavity facing the first opening; and a heat insulation support disposed inside the support sleeve near the second opening, and the heat insulation support being connected to the end of the heating element facing the second opening.

[0005] In a further embodiment of this application, the end of the heat insulation support facing the heating element has a support protrusion, which is connected to the heating element.

[0006] In a further embodiment of this application, the support protrusion is located at the center of the heating component, and the area on the heat insulation support located on the circumferential outer side of the support protrusion has a preset distance between it and the heating component in the first direction.

[0007] In a further embodiment of this application, the heat insulation support further includes: a support body, which is a ring structure, with a support protrusion located on the inner side of the support body on a projection plane perpendicular to the first direction; and a plurality of connecting plates, which are spaced apart along the circumference of the support body, with one end of each connecting plate connected to the support protrusion and the other end connected to the support body.

[0008] In a further embodiment of this application, a through-hole is provided on the heat insulation support in the circumferential outer region of the supporting protrusion, and the through-hole penetrates the heat insulation support along a first direction.

[0009] In a further embodiment of this application, a first assembly structure is provided on the inner sidewall of the support sleeve near the first opening, the first assembly structure protruding radially inward toward the support sleeve; the heating component includes: a heating tube, the wall of the heating tube having a heating resistor for heating in an energized state, the end of the heating tube facing the first opening abutting against the first assembly structure; and a heat exchange core, the heat exchange core being disposed at the end of the heating tube facing the second opening, and at least a portion of the structure of the heat exchange core extending into the heating tube to form a heating cavity with the heating tube; an assembly groove is provided at the end of the heat exchange core facing the second opening, and the circumferential outer side of the assembly groove has a plurality of vent holes extending along a first direction; wherein, the support protrusion extends into the assembly groove and abuts against the bottom wall of the assembly groove.

[0010] In a further embodiment of this application, the first assembly structure is an annular structure, and the inner sidewall of the end of the first assembly structure facing the second opening has a first step structure. The end of the heating tube facing the first opening extends into the first assembly structure and abuts against the first step structure. The end face of the first step structure facing the second opening has a plurality of ventilation grooves, which are spaced apart circumferentially to allow airflow to pass through.

[0011] In a further embodiment of this application, the circumferential edge of the end of the heat exchange core facing the second opening has a second stepped structure, the second stepped structure protrudes radially outward and abuts against the end of the heating tube facing the second opening; and / or, the heat insulation support is provided with a plurality of wire passages, the lead structure of the heating resistor passes through the corresponding wire passage and extends to the outside of the support sleeve.

[0012] In a further embodiment of this application, the heat insulation support has an airflow channel extending along a first direction; the heating device further includes: a mounting base, which is connected to one end of the support sleeve with a second opening, and in the first direction, the mounting base abuts against the heat insulation support, the mounting base having a sensing cavity, and the sensing cavity being covered with a flexible diaphragm, the flexible diaphragm dividing the sensing cavity into a first sensing cavity and a second sensing cavity that are isolated from each other, the first sensing cavity communicating with the airflow channel, the flexible diaphragm being configured such that at least a portion of its structure moves toward the first sensing cavity or the second sensing cavity under air pressure; and an airflow sensing component, which is disposed in the second sensing cavity and sealed to the inner wall of the second sensing cavity, the airflow sensing component being configured to be electrically connected to the power supply component, for sensing changes in air pressure in the second sensing cavity and generating a corresponding sensing signal.

[0013] An embodiment of the technical solution of the second aspect of this application also provides an aerosol generating device, including: a main housing, one end of the main housing having an assembly port for inserting an aerosol generating rod; a heating device according to any embodiment of the first aspect of the technical solution, the heating device being disposed inside the main housing and the first opening of the heating device corresponding to the assembly port; and a power supply device, the power supply device being disposed inside the main housing and electrically connected to the heating element of the heating device.

[0014] The beneficial effects of the above-mentioned technical solution of this application are as follows:

[0015] According to the heating device in this application, by improving and optimizing the structure, the bottom of the heating component is supported and fixed by the heat insulation support, so that a certain distance is maintained between the bottom area of ​​the heating component with a high temperature and the support sleeve, avoiding direct contact between the two, thereby reducing the possibility of the support sleeve being deformed or melted by high temperature baking, which is beneficial to improving the service life of the support sleeve. Attached Figure Description

[0016] Figure 1 This is a perspective view of a heating device in one embodiment of this application;

[0017] Figure 2 This is a perspective view of the heating device in one embodiment of this application from another angle.

[0018] Figure 3 This is a cross-sectional view of a heating device in one embodiment of this application;

[0019] Figure 4 This is a schematic diagram of a portion of the structure of the heating device in one embodiment of this application (support sleeve not shown);

[0020] Figure 5 for Figure 4 A bottom view of the heating device in the middle;

[0021] Figure 6 This is a three-dimensional schematic diagram of a heat-insulating support in one embodiment of this application;

[0022] Figure 7 This is a top view of the thermal insulation support in one embodiment of this application;

[0023] Figure 8 for Figure 4 Top view of the heating device in the middle;

[0024] Figure 9 This is a perspective view of the heating device in another embodiment of this application;

[0025] Figure 10 This is a cross-sectional view of the heating device in another embodiment of this application;

[0026] Figure 11 This is a perspective view of an aerosol generating device in one embodiment of this application (with the aerosol generating rod installed);

[0027] Figure 12 This is a perspective view of an aerosol generating device in one embodiment of this application from another angle.

[0028] Figure 13 This is a cross-sectional view of an aerosol generating device according to one embodiment of this application (with the aerosol generating rod installed);

[0029] Figure 14 This is a cross-sectional view of an aerosol generating device in one embodiment of this application (without the aerosol generating rod installed).

[0030] In the above-mentioned attached diagram, arrow F1 indicates the first direction. Figure 13 The dashed arrows in the figures indicate the direction of airflow; in addition, the pin structures shown in the above figures are all in an unbent state.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 Heating device; 1 Support sleeve, 10 Insulation space, 11 First opening, 12 Second opening, 13 First assembly structure, 131 First step structure, 132 Ventilation groove, 2 Heating component, 21 Heating tube, 210 Heating cavity, 211 Heating resistor, 212 Pin structure, 22 Heat exchange core, 221 Assembly groove, 222 Ventilation hole, 223 Second step structure, 3 Insulation support, 31 Support protrusion, 32 Support body, 33 Connecting plate, 34 Through port, 35 Wire passage, 36 Airflow passage, 41 Mounting base, 410 Flexible diaphragm, 411 First sensing cavity, 412 Second sensing cavity, 42 Airflow sensing component, 421 Sensing fixing seat, 422 Airflow sensor, 43 Fixing sleeve, 431 Contact structure;

[0033] 500 Aerosol generating device, 510 Main housing, 511 Assembly port, 512 Support structure, 520 Power supply device, 521 Battery, 522 Control board; 600 Aerosol generating rod. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0035] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0036] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0037] An aerosol generator is a special atomizing product containing an atomizing matrix. When in use, it is inserted into a matching heated non-combustible aerosol generator. The heating device heats the aerosol generator, causing the atomizing matrix inside the aerosol generator to atomize and generate aerosol. As the user draws the aerosol generator, the aerosol moves with the airflow to the suction end.

[0038] The heating device provided in this application changes the common support method where the support sleeve is in direct contact with the bottom of the heating element. Instead, a high-temperature resistant heat-insulating support is added to the bottom of the heating element, and the support protrusion on the heat-insulating support is connected to the heating element. This maintains a certain distance between the support sleeve and the bottom or side wall of the heating element, avoiding direct contact. As a result, it can be used with conventional PEEK material support sleeves and can prevent the support sleeve from deforming or melting due to high temperature baking.

[0039] The following describes some embodiments of the heating device and aerosol generating equipment provided in this application with reference to the accompanying drawings.

[0040] The first aspect of this application provides a heating device 100, such as... Figure 1 , Figure 2 , Figure 3 As shown, the heating device 100 includes a support sleeve 1, a heating element 2, and a heat-insulating support 3. In a first direction, the support sleeve 1 is internally continuous and has a first opening 11 and a second opening 12 arranged opposite each other. When assembled in an aerosol generating device, the first direction is consistent with the height direction of the aerosol generating device, and the first opening 11 of the support sleeve 1 faces upwards. The heating element 2 and the heat-insulating support 3 are disposed within the support sleeve 1. The heating element 2 has a heating chamber 210 that can accommodate an aerosol generating rod, and the opening of the heating chamber 210 faces the first opening 11 of the support sleeve 1, so that the aerosol generating rod can pass through the first opening 11 and be inserted into the heating chamber 210. The heating element 2 heats the aerosol generating rod, causing its internal atomizing matrix to atomize and generate aerosol. The heat-insulating support 3 is connected to the end of the heating element facing the second opening 12, providing support for the heating element while maintaining a certain distance between the end of the heating element facing the second opening 12 and the support sleeve 1.

[0041] It is understandable that in existing aerosol generation equipment, support components (such as support sleeves) are usually made of non-metallic materials, such as PEEK (polyether ether ketone). To simplify the structure, a corresponding support structure is usually set at the bottom of the support component to abut against the heating element for support and fixation. The operating temperature of support components made of common PEEK material is generally around 260℃, while the heating element in aerosol generation equipment can reach temperatures above 300℃ near the bottom (for example, in heating methods using heat exchange cores to form hot airflow, the heat exchange core is usually located at the bottom of the heating chamber 210, and its temperature is higher than other areas where the heat exchange core is located), approaching the melting point of PEEK material. Prolonged baking at high temperatures can easily cause deformation of the support component, affecting its service life and even causing it to melt, thus affecting the normal operation of the equipment.

[0042] In this embodiment, the heating device improves and optimizes the structure by using a heat-insulating support to support and fix the bottom of the heating component. This ensures that there is a certain distance between the bottom area of ​​the heating component with a high temperature and the support sleeve, avoiding direct contact between the two. This reduces the possibility of the support sleeve being deformed or melted due to high temperature baking. The support sleeve can be made of conventional PEEK material, which can ensure the service life of the support sleeve and help save costs.

[0043] It should be noted that, in practical applications, the heat insulation support 3 can be made of high-temperature resistant materials; the heating chamber 210 can specifically be a cylindrical cavity, and its size can be adapted to fit the aerosol generating rod to facilitate the installation of the aerosol generating rod; the heating component 2 is not limited to... Figure 3The structure with heat exchange core shown can also be adapted to other structures that can heat the aerosol generating rod, depending on the application requirements.

[0044] In further embodiments of this application, such as Figure 2 , Figure 3 and Figure 4 As shown, the heat insulation support 3 has a support protrusion 31 at one end facing the heating element 2. The support protrusion 31 protrudes along the first direction and is connected to the heating element 2, so that other areas on the heat insulation support 3 do not contact the heating element 2, thus reserving an air intake channel for the heating element 2. When assembled in an aerosol generating device, the intake airflow can flow into the heating chamber 210 from the end of the heating element 2 facing the second opening 12 to mix with the aerosol generated by the aerosol generating rod.

[0045] Furthermore, in a specific implementation, such as Figure 3 , Figure 4 , Figure 5 In the example, the support protrusion 31 corresponds to the center position of the heating element 2. On the one hand, it can position the heating element 2 during assembly, and on the other hand, it can keep the support protrusion 31 away from the outer wall of the heating element 2, thereby reducing the temperature of the support protrusion 31. The area on the heat insulation support 3 located on the circumferential outer side of the support protrusion 31 has a preset distance from the heating element 2 in the first direction to avoid direct contact with the heating element 2, which helps to reduce the temperature of the heat insulation support 3, and also reserves space for the air intake of the heating element 2.

[0046] Furthermore, in a specific implementation, such as Figure 3 , Figure 6 and Figure 7 In the example, the heat insulation support 3 specifically includes a support body 32, connecting plates 33, and supporting protrusions 31. The support body 32 adopts a ring structure and is through in a first direction; the supporting protrusions 31 are located inside the support body 32, and multiple connecting plates 33 are spaced apart on the circumference of the supporting protrusions 31. One end of each connecting plate 33 is connected to the supporting protrusions 31, and the other end is connected to the support body 32 to fix the supporting protrusions 31. In this way, the heat insulation support 3 is formed with a hollow structure to allow some airflow to pass through. When applied in an aerosol generation device, a corresponding airflow sensing component can be set on the other side of the heat insulation support 3.

[0047] Of course, in another specific embodiment, the heat insulation support 3 can also adopt an integrated structure, that is, the support protrusion 31 and the support body 32 are integrated. At least one through hole 34 can be opened in the first direction on the area on the circumferential outer side of the support protrusion 31 on the heat insulation support 3 so that airflow can pass through. When applied to aerosol generation equipment, it can also meet the airflow movement requirements of the airflow sensing component.

[0048] In further embodiments of this application, such as Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the heating component 2 specifically includes a heating tube 21 and a heat exchange core 22. A heating resistor 211 is disposed on the wall of the heating tube 21. The lead structure 212 of the heating resistor 211 can be electrically connected to a power supply device to supply power to the heating resistor 211 of the heating tube 21, thereby causing the heating tube 21 to heat up. The heating tube 21 is arranged along a first direction, and the heat exchange core 22 is disposed at the end of the heating tube 21 facing the second opening 12. At least a portion of the heat exchange core 22 extends into the heating tube 21, so that the internal space of the heating tube 21 forms a heating cavity 210, and the opening of the heating cavity 210 faces the first opening 11 of the supporting sleeve 1. The heat exchange core 22 has multiple vent holes 222 extending along a first direction, allowing airflow to pass through the vent holes 222 and enter the heating chamber 210. The airflow is heated as it passes through the vent holes 222, forming a hot airflow that heats the aerosol generating rods within the heating chamber 210. The end of the heat exchange core 22 facing the second opening 12 also has an assembly groove 221. The size of the support protrusion 31 of the heat insulation support 3 matches the assembly groove 221, extending into it and abutting against the bottom wall of the groove to form an insertion assembly with the heat exchange core 22. Correspondingly, a first assembly structure 13 is provided on the inner wall of the support sleeve 1 near the first opening 11. The first assembly structure 13 protrudes radially towards the inner side of the support sleeve 1, and the end of the heating tube 21 facing the first opening 11 abuts against the first assembly structure 13 to limit and fix the heating tube 21.

[0049] Under normal circumstances, the end of the heating element 21 closer to the heat exchange core 22 corresponds to the area where the atomized matrix is ​​stored in the aerosol generating rod, and its heating temperature is relatively high. Conversely, the end of the heating element 21 further away from the heat exchange core 22 has a relatively low temperature, typically remaining within the temperature range that the PEEK material can withstand. Therefore, in this embodiment, by providing a first assembly structure 13 on the inner wall of the support sleeve 1 to fix the end of the heating element 21 facing the first opening 11, the support sleeve 1 will not experience high-temperature baking. Furthermore, there is no need to separately set up a top fixing structure for the heating element 21, which simplifies the overall structure and improves space utilization.

[0050] Furthermore, such as Figure 3In the example shown, the first assembly structure 13 of the support sleeve 1 specifically adopts a ring structure. In the first direction, a first step structure 131 is provided on the inner wall of the end of the first assembly structure 13 facing the second opening 12. The end of the heating tube 21 facing the first opening 11 extends into the first assembly structure 13 and abuts against the first step, thereby simultaneously limiting and fixing the heating tube 21 in both the first and lateral directions. Preferably, the first step structure 131 also adopts a ring structure, resulting in more uniform force distribution and a more stable fit. The first stepped structure 131 has multiple ventilation grooves 132 on its end face facing the second opening 12. Correspondingly, there is a certain heat insulation space 10 between the heating tube 21 and the supporting sleeve 1. When the heating tube 21 is in contact with the first stepped structure 131, the ventilation grooves 132 can communicate with the heat insulation space 10 between the heating tube 21 and the supporting sleeve 1. When the aerosol generating rod is inserted into the heating chamber 210 of the heating tube 21, the gas flowing in from the first opening 11 can pass through the ventilation grooves 132 into the heat insulation space 10 and flow towards the second opening 12, and then enter the heating tube 21 through the heat exchange core 22 at the other end of the heating tube 21. Specifically, the multiple ventilation grooves 132 are arranged at intervals along the circumference of the first assembly structure 13. Preferably, the multiple ventilation grooves 132 are arranged at equal intervals in the circumference, so that the airflow can flow into the heat insulation space 10 relatively evenly from different directions.

[0051] Furthermore, such as Figure 3 In the example, in the first direction, a portion of the structure of the heat exchange core 22 is located inside the heating tube 21, and one end of the heat exchange core 22 facing the second opening 12 is located outside the heating tube 21. A second step structure 223 is provided on the circumferential edge of the end of the heat exchange core 22 facing the second opening 12. The second step structure 223 protrudes outward along the radial direction of the heat exchange core 22, and in the first direction, the second step structure 223 abuts against the end of the heating tube 21 facing the second opening 12. With the above structure, on the one hand, the heating tube 21 can be clamped by the second step structure 223 and the first assembly structure 13 at both ends in the first direction to fix the heating tube 21; on the other hand, the second step structure 223 can be used to limit the heat exchange core 22, preventing relative sliding between the heat exchange core 22 and the heating tube 21, and also facilitating assembly and fixation.

[0052] Furthermore, in a specific example, such as Figures 4 to 8As shown, the heat insulation support 3 has multiple wire passages 35. The lead structure 212 of the heating resistor 211 on the heating tube 21 passes through the corresponding wire passage 35 and extends to the outside of the support sleeve 1. When applied in aerosol generation equipment, the lead structure 212 can be bent for proper wiring and electrical connection with the power supply device; the wire passages 35 on the heat insulation support 3 can guide, limit, and fix the lead structure 212. Specifically, the wire passage 35 can adopt the wire groove structure shown in the figure, or it can adopt a wire hole or other structure that allows the lead structure 212 to pass through.

[0053] In further embodiments of this application, such as Figure 9 and Figure 10 As shown, the heating device 100 also includes a mounting base 41 and an airflow sensing component 42. The mounting base 41 is disposed at one end of the second opening 12 of the support sleeve 1, the mounting base 41 is connected to the support sleeve 1, and the mounting base 41 abuts against the heat insulation support 3 in the first direction to provide support and fixation for the heat insulation support 3. A sensing cavity is formed within the mounting base 41, and a flexible diaphragm 410 is disposed within the sensing cavity. The flexible diaphragm 410 covers the sensing cavity in a first direction, and the circumferential edge of the flexible diaphragm 410 is connected to the inner wall of the sensing cavity, dividing the sensing cavity into a first sensing cavity 411 and a second sensing cavity 412 that are isolated from each other in the first direction. The heat insulation support 3 has an airflow channel 36 that extends along the first direction. The first sensing cavity 411 is located on the side of the flexible diaphragm 410 facing the heat insulation support 3 and is connected to the airflow channel 36. The second sensing cavity 412 is located on the side of the flexible diaphragm 410 facing away from the heat insulation support 3, and an airflow sensing component 42 is disposed within the second sensing cavity 412. The airflow sensing component 42 is sealed to the inner wall of the second sensing cavity 412 to form a sealed space. When applied in an aerosol generating device, the airflow sensing component 42 can be electrically connected to the power supply component. When the aerosol generating rod is suctioned, the airflow flows into the heating component 2. The gas in the first sensing chamber 411 flows toward the heating component 2 under negative pressure, causing the flexible diaphragm 410 to deform and move toward the heating component 2, resulting in a change in the air pressure in the second sensing chamber 412. The airflow sensing component 42 can sense the change in air pressure in the second sensing chamber 412 and generate a corresponding sensing signal. The power supply device receives the sensing signal and controls the power supply status to the heating component 2.

[0054] Specifically, such as Figure 10In the example, the airflow sensing assembly 42 may specifically include a sensing base 421 and an airflow sensor 422. The sensing base 421 is made of silicone and is wrapped around the outer wall of the airflow sensor 422. The sensing base 421 is press-fitted with the inner wall of the second sensing cavity 412 to provide a sealing function. The airflow sensor 422 is used to sense changes in air pressure within the second sensor and generate a corresponding sensing signal.

[0055] An embodiment of the second aspect of this application provides an aerosol generating device 500, such as... Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the aerosol generating device 500 includes a main housing 510, a heating device 100 as described in any of the embodiments of the first aspect, and a power supply device 520. The main housing 510 serves as the mounting carrier for the aerosol generating device 500, and has an assembly port 511 at one end in the first direction. Both the heating device 100 and the power supply device 520 are located inside the main housing 510. The first opening 11 of the heating device 100 corresponds to the assembly port 511, allowing the aerosol generating rod 600 to pass through the assembly port 511 and the first opening 11 and be inserted into the heating chamber 210 of the heating element 2, so that the heating element 2 can heat the aerosol generating rod 600. The power supply device 520 is electrically connected to the heating element 2 to supply power to the heating element 2, causing the heating element 2 to be energized and generate heat.

[0056] The following describes a specific example of the aerosol generating apparatus 500 of this application with reference to the accompanying drawings.

[0057] like Figures 1 to 14 As shown, the aerosol generating device 500 is specifically a heated non-combustible device. The height direction of the main housing 510 is the first direction, and a circular assembly port 511 is opened at the top of the main housing 510. The heating device 100 is disposed inside the main housing 510 along the first direction. The supporting sleeve 1 and the heating tube 21 of the heating device 100 adopt a cylindrical structure, the heat exchange core 22 adopts a corresponding cylindrical structure, and the heat insulation support 3 adopts a hollow disc structure. The supporting sleeve 1 is made of PEEK material, and the heat insulation support 3 is made of high-temperature resistant material. The first opening 11 of the supporting sleeve 1 is connected to the assembly port 511, and an annular fixing sleeve 43 is provided on the inner side of the first opening 11. Multiple flexible contact structures 431 are arranged circumferentially on the inner wall of the fixing sleeve 43. When the aerosol generating rod 600 is inserted into the heating chamber 210 of the heating device 100 through the assembly port 511, as... Figure 13As shown, the aerosol generating rod 600 can be fixed by contacting the side wall of the contact structure 431. A support structure 512 is provided inside the main housing 510. The support structure 512 is positioned opposite the assembly port 511 in a first direction. The heating device 100 is located above the support structure 512, and the mounting base 41 of the heating device 100 abuts against the support structure 512 to provide overall support for the heating device 100.

[0058] like Figure 13 and Figure 14 As shown, the mounting base 41 is internally divided into a first sensing cavity 411 and a second sensing cavity 412 by a flexible diaphragm 410. The first sensing cavity 411 is located above the flexible diaphragm 410, and the second sensing cavity 412 is located below the flexible diaphragm 410. The silicone sensing fixing seat 421 of the airflow sensing component 42 fills part of the second sensing cavity 412, so that a sealed space is formed between the airflow sensing cavity and the flexible diaphragm 410. An annular slot is provided on the top surface of the mounting base 41. The bottom of the support sleeve 1 is inserted into the slot of the mounting base 41, and the top of the support sleeve 1 abuts against the main housing 510. The support body 32 of the heat insulation support 3 is snapped onto the top surface of the mounting base 41. The support body 32 adopts the following... Figure 6 and Figure 7 The ring structure has three connecting plates 33 evenly arranged on its top along the circumference. The supporting protrusion 31 is located at the center of the ring structure and protrudes upward along the first direction. The bottom of the supporting protrusion 31 is connected to the three connecting plates 33 so that the heat insulation support 3 forms a hollow structure. In the first direction, the size of the connecting plate 33 is larger than the size of the support body 32 to improve the strength of the connecting plate 33.

[0059] Accordingly, such as Figure 13 and Figure 14 As shown, the heat exchange core 22 of the heating element 2 has an assembly groove 221 at its bottom center. The support protrusion 31 is adapted to the assembly groove 221 and extends into the assembly groove 221 to form an insertion and positioning fit with the heat exchange core 22. Multiple vent holes 222 are provided on the heat exchange core 22 in the area circumferentially outside the assembly groove 221, and the multiple vent holes 222 are arranged in a ring matrix. The bottom outer edge of the heat exchange core 22 has a radially protruding second step structure 223, which abuts against the bottom of the heating tube 21. The inner wall of the support sleeve 1 has a radially inwardly protruding first assembly structure 13 near the first opening 11. The first assembly structure 13 has a ring-shaped first step structure 131, which abuts against the top of the heating tube 21. The first step structure 131 has multiple vent grooves 132 on the side facing the heating tube 21 in the first direction, and the multiple vent grooves 132 are evenly arranged circumferentially.

[0060] like Figure 13 and Figure 14 As shown, the power supply device 520 includes a battery 521 and an electronic control board 522; the electronic control board 522 is located on the side of the heating device 100, and a control circuit is provided on the electronic control board 522; the battery 521 is located on the side of the electronic control board 522 facing away from the heating device 100 and is electrically connected to the electronic control board 522. The lead structure 212 of the heating resistor 211 on the heating tube 21 passes through the wire passage 35 on the heat insulation support 3 and extends to the electronic control board 522 for electrical connection.

[0061] During use, such as Figures 11 to 14 The aerosol generating rod 600 can be inserted into the heating chamber 210 of the heating device 100 through the assembly port 511 and abut against the top surface of the heat exchange core 22. When the aerosol generating rod 600 is suctioned, the gas in the first sensor of the mounting base 41 flows to the heating component 2 under negative pressure, causing the flexible diaphragm 410 to deform and move upward under negative pressure, resulting in a change in air pressure in the second sensing chamber 412 below the flexible diaphragm 410. The airflow sensing chamber senses the change in air pressure and generates a sensing signal. The power supply device 520 controls the power supply to the heating resistor 211 of the heating tube 21 according to the sensing signal, so that the heating tube 21 heats up. The heating resistor 211 located at the bottom of the heating tube 21 corresponds to the heat exchange core 22 and has a higher heating temperature, so that the temperature of the heat exchange core 22 rises to the target heating temperature. At the same time, external airflow enters the first opening 11 of the support sleeve 1 through the assembly port 511, and passes through the corresponding ventilation groove 132 from the side of the aerosol generating rod 600 into the heat insulation space 10 between the support sleeve 1 and the heating tube 21. The airflow flows in the first direction to the bottom of the heat exchange core 22, and passes through the ventilation hole 222 of the heat exchange core 22 into the heating chamber 210 inside the heating tube. When the airflow passes through the ventilation hole 222, it is heated to form a hot airflow. When it is drawn into the aerosol generating rod 600, it forms a hot airflow and heats it, so that the atomizing matrix inside is heated and atomized, and generates aerosol. After the aerosol mixes with the airflow, it flows towards the suction end of the aerosol generating rod 600.

[0062] The aerosol generating device 500 in this embodiment uses the heating device 100 in the above embodiment to support and fix the bottom of the heating component 2 with the heat insulation support 3, so that a certain distance is maintained between the bottom area of ​​the heating component with a high temperature and the support sleeve 1, avoiding direct contact between the two, thereby reducing the possibility of the support sleeve 1 being deformed or melted by high temperature baking. The support sleeve 1 can be made of conventional PEEK material, which can ensure the service life of the support sleeve 1 and help save costs.

[0063] Furthermore, the aerosol generating device 500 in this embodiment also has all the beneficial effects of the heating device 100 in any of the above embodiments, which will not be repeated here.

[0064] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heating device, characterized in that, include: A support sleeve having a first opening and a second opening opposite each other in a first direction, the first opening being for the aerosol generating rod to pass through. A heating element is disposed within the support sleeve, and the heating element has a heating cavity that can accommodate an aerosol generating rod, with the opening end of the heating cavity facing the first opening. And a heat insulation support, which is disposed inside the support sleeve near the second opening, and the heat insulation support is connected to the end of the heating component facing the second opening.

2. The heating device according to claim 1, characterized in that, The heat insulation support has a support protrusion at one end facing the heating element, and the support protrusion is connected to the heating element.

3. The heating device according to claim 2, characterized in that, The support protrusion is located at the center of the heating element, and the heat insulation support is located in the circumferentially outer region of the support protrusion, both of which have a preset distance from the heating element in the first direction.

4. The heating device according to claim 3, characterized in that, The heat-insulating support also includes: The support body is a ring structure, and on the projection plane perpendicular to the first direction, the support protrusion is located on the inner side of the support body. And a plurality of connecting plates, the connecting plates being spaced apart circumferentially along the support body, and one end of each connecting plate being connected to the support protrusion, and the other end being connected to the support body.

5. The heating device according to claim 3, characterized in that, The heat insulation support has a through-hole located on the circumferential outer region of the supporting protrusion, and the through-hole penetrates the heat insulation support along a first direction.

6. The heating device according to claim 2, characterized in that, The inner wall of the support sleeve has a first assembly structure near the first opening, and the first assembly structure protrudes radially inward toward the support sleeve. The heating component includes: A heating element, the wall of which has a heating resistor, the heating resistor being used to generate heat when energized, the end of the heating element facing the first opening abutting against the first assembly structure; The heat exchange core is disposed at one end of the heating tube facing the second opening, and at least a portion of the structure of the heat exchange core extends into the heating tube to form the heating cavity together with the heating tube; the end of the heat exchange core facing the second opening is provided with an assembly groove, and the outer circumferential side of the assembly groove has a plurality of vent holes extending along the first direction. The supporting protrusion extends into the assembly groove and abuts against the bottom wall of the assembly groove.

7. The heating device according to claim 6, characterized in that, The first assembly structure is a ring structure, and the inner sidewall of the end of the first assembly structure facing the second opening has a first step structure. The end of the heating tube facing the first opening extends into the first assembly structure and abuts against the first step structure. The first stepped structure has a plurality of ventilation slots on the end face of the end facing the second opening. The plurality of ventilation slots are arranged at circumferential intervals to allow air intake airflow to pass through.

8. The heating device according to claim 6, characterized in that, The circumferential edge of the end of the heat exchange core facing the second opening has a second stepped structure, the second stepped structure protruding radially outward and abutting against the end of the heating tube facing the second opening; and / or The heat insulation support has multiple wire passages, and the lead structure of the heating resistor passes through the corresponding wire passage and extends to the outside of the support sleeve.

9. The heating device according to any one of claims 1 to 8, characterized in that, The heat-insulating support has an airflow channel extending along a first direction; The heating device also includes: The mounting base is connected to one end of the support sleeve where the second opening is provided, and in a first direction, the mounting base abuts against the heat insulation support. The mounting base has a sensing cavity, and the sensing cavity is covered with a flexible diaphragm. The flexible diaphragm divides the sensing cavity into a first sensing cavity and a second sensing cavity that are isolated from each other. The first sensing cavity is connected to the airflow channel. The flexible diaphragm is configured such that at least a portion of its structure moves toward the first sensing cavity or the second sensing cavity under air pressure. The airflow sensing component is disposed in the second sensing cavity and sealed to the inner wall of the second sensing cavity. The airflow sensing component is configured to be electrically connected to the power supply component and is used to sense changes in air pressure in the second sensing cavity and generate corresponding sensing signals.

10. An aerosol generating device, characterized in that, include: The main housing has an assembly port at one end in a first direction, the assembly port being used for the aerosol generating rod to be inserted. The heating device as described in any one of claims 1 to 9, wherein the heating device is disposed inside the main housing, and the first opening of the heating device is correspondingly provided with the assembly port; And a power supply device, which is located inside the main unit housing and is electrically connected to the heating element of the heating device.

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