Heating assembly and aerosol generation device

Abstract

Provided in the present application are a heating assembly and an aerosol generation device. The heating assembly comprises a cup body and a heating element. The cup body is internally provided with a central portion and a peripheral portion arranged on the periphery of the central portion, wherein the central portion has an accommodating cavity and a heating cavity, and the accommodating cavity has an opening at one end; the heating element is arranged in the heating cavity and is used for heating into a hot airflow an airflow flowing into the heating cavity, and the hot airflow is configured for flowing into the accommodating cavity to heat an aerosol product; the peripheral portion is provided with a first air intake channel, which has an air intake end and an air output end, with the air intake end being arranged on the side close to the opening, and the air output end being arranged on the side away from the opening; and one end of the heating cavity is in communication with the air output end, and the other end thereof is in communication with the accommodating cavity.

Description

Heating components and aerosol generating device

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024118443489, filed on December 13, 2024, entitled "Heating Component and Aerosol Generating Equipment"; and Chinese Patent Application No. 2024230897956, filed on December 13, 2024, entitled "Heated Non-combustible Device and Heated Non-combustible System"; and Chinese Patent Application No. 2024230909027, filed on December 13, 2024, entitled... Priority is claimed in Chinese patent application No. 2024230896648, filed on December 13, 2024, entitled "Heating Component and Aerosol Generating Apparatus"; priority is also claimed in Chinese patent application No. 2024118449860, filed on December 13, 2024, entitled "Heating Component and Aerosol Generating Apparatus"; the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of aerosol generation technology, specifically to a heating component and an aerosol generation device. Background Technology

[0004] In aerosol generation devices, a heating element is typically used to heat the aerosol product. This heating element is located upstream of the aerosol product, using high-temperature hot air to heat it, causing the generated aerosol to be drawn out through the filter section of the product by the airflow. However, these devices usually use bottom air intake, requiring a corresponding air intake structure with an internal air intake channel. The structural design must consider the space required for the air intake channel, and a tight seal must be maintained between the internal support, heating element, and air intake structure. This makes the internal structure complex, with many parts, and poor sealing can lead to air leakage and reduced suction resistance, affecting the pumping experience. Summary of the Invention

[0005] This application provides a heating component and an aerosol generating device, which solves the problems of complex internal design and poor sealing in aerosol generating devices.

[0006] To address the aforementioned technical problems, this application provides a heating assembly, including a cup body and a heating element. The cup body has a central portion and an outer portion located outside the central portion. The central portion has a receiving cavity and a heating cavity. The receiving cavity is used to contain an aerosol product, and one end of the receiving cavity has an opening for the aerosol product to be inserted into the receiving cavity. The heating element is disposed within the heating cavity and is used to heat the airflow flowing into the heating cavity into a hot airflow, which then flows into the receiving cavity to heat the aerosol product. The outer portion has a first air inlet channel, which has an inlet end and an outlet end. The inlet end is located near the opening, and the outlet end is located away from the opening. One end of the heating cavity is connected to the outlet end, and the other end is connected to the receiving cavity.

[0007] To solve the above-mentioned technical problems, this application provides an aerosol generating device, which includes a nozzle and a heating component as described above. The nozzle can be fitted with a cup body to cover the aerosol product in the accommodating cavity.

[0008] The heating assembly of this application integrates the first air intake channel, the heating chamber for heating the hot airflow, and the accommodating cavity for containing the aerosol product into the cup body. The heating assembly can be manufactured and installed as a separate component. The first air intake channel is formed within the cup body, thus eliminating the need for additional air intake structures within the aerosol generation device, reducing the number of parts and simplifying the internal structural design. Compared to using different parts to separately set the first air intake channel, heating chamber, and accommodating cavity, which connects different spaces through seals, resulting in too many parts and potential sealing problems, this application integrates the first air intake channel, heating chamber, and accommodating cavity in the central and outer portions of the cup body. The entire cup body has better sealing, avoiding the problem of different parts needing to connect internal spaces through seals. This avoids issues such as seal aging and poor sealing, improving the user's suction experience. Attached Figure Description

[0009] Figure 1 is a perspective view of an aerosol generating device in one embodiment of this application (with the cover closed);

[0010] Figure 2 is a perspective view of the aerosol generating device in another embodiment of this application (with the cover open);

[0011] Figure 3 is a cross-sectional view of an aerosol generating apparatus in one embodiment of this application;

[0012] Figure 4 is a schematic diagram of the heating component and the suction nozzle in one embodiment of this application;

[0013] Figure 5 is an exploded view of Figure 4;

[0014] Figure 6 is a cross-sectional view of Figure 4;

[0015] Figure 7 is a schematic diagram of the structure of a heating component in one embodiment of this application;

[0016] Figure 8 is a longitudinal sectional view of Figure 7;

[0017] Figure 9 is a cross-sectional view of Figure 7;

[0018] Figure 10 is a schematic diagram of the structure of a metal foil in one embodiment of this application;

[0019] Figure 11 is a schematic diagram of the structure of the gas collecting device in one embodiment of this application;

[0020] Figure 12 is a schematic diagram of the structure of a heating element in one embodiment of this application;

[0021] Figure 13 is a schematic diagram of the structure of the heating element in another embodiment of this application;

[0022] Figure 14 is a schematic diagram of the structure of the heating element in another embodiment of this application;

[0023] Figure 15 is a schematic diagram of the structure of the flow guide in one embodiment of this application;

[0024] Figure 16 is a schematic diagram of the flow guide section in another embodiment of this application;

[0025] Figure 17 is a top view of the guide section in another embodiment of this application;

[0026] Figure 18 is a cross-sectional view of a heating assembly provided in an embodiment of this application;

[0027] Figure 19 is a cross-sectional view of the heating assembly in another embodiment of this application;

[0028] Figure 20 is a cross-sectional view of the heating component in another embodiment of this application.

[0029] In the above-mentioned figures, arrow F1 indicates the first direction, and the dashed arrow in Figure 6 indicates the direction of airflow.

[0030] Reference numerals: Heating assembly 10, cup body 11, accommodating cavity 111, opening 1111, heating cavity 112, first air inlet channel 113, air inlet end 1131, air outlet end 1132, cooling cavity 114, diverting air channel 115, air guiding cavity 116, guiding part 1161, first guiding surface 1162, second guiding surface 1163, first interface 117, supporting structure 118, heating element 12, heating channel 121, heat-conducting substrate 122, heating element 123. Positive electrode circuit 1231, negative electrode circuit 1232, heating pattern 1233, heating structure 1234, heating unit 1235, connecting wire 1236, shell 20, cover 30, connector 31, locking part 32, suction nozzle 33, air outlet channel 331, port 332, cooling air channel 333, cooling structure 3331, second air inlet channel 334, air inlet 335, aerosol product 40, metal foil 50, one-way valve 60, gas collecting part 70, gas collecting hole 71. Detailed Implementation

[0031] Please refer to Figures 1-6. This application provides an aerosol generating device, which can also be called a heated non-combustible device or an aerosol generating equipment. The aerosol generating device can be used to heat an aerosol product 40, wherein the aerosol product 40 is a solid aerosol product 40 processed or assembled into an aerosol product 40 with a predetermined shape or a bulk solid aerosol product 40. In some embodiments, the aerosol product 40 may include a plant smoking matrix, which may include tobacco or non-tobacco plants. For example, it may be made of tobacco powder or other plant powder or chopped tobacco or plants mixed with a certain proportion of polyols, flavorings and binders. It may also be made of natural plant shreds or chopped plants. A coating layer is wrapped around the outside of the plant smoking matrix. In some embodiments, the aerosol product 40 may also not have a coating layer, but is an integral molded body formed by stamping or extrusion. The interior of the plant smoking matrix is ​​loose and porous. When the plant smoking matrix is ​​heated, it will generate aerosols, which can flow out from the pores in the smoking matrix. Aerosol product 40 can be a columnar smoke-generating matrix without a filter tip and a cooling section.

[0032] As shown in Figures 1-3, the aerosol generating device includes a heating component 10, a housing 20, a cover 30, a circuit board (not shown), a battery (not shown), and an airflow sensor (not shown). The heating component 10 is used to heat the aerosol product 40 to generate aerosol.

[0033] As shown in Figures 1-3, the housing 20 and the cover 30 can rotate or move relative to each other, or the housing 20 and the cover 30 can be detachably connected. A suction nozzle 33, also referred to as a tube, can be provided on the cover 30. The suction nozzle 33 has an exhaust channel 331 with a suction port, allowing the aerosol generated by the aerosol product 40 to flow out through the exhaust channel 331 for user inhalation. A heating assembly 10 is disposed inside the housing 20. In one embodiment, the heating assembly 10 is disposed on the side of the housing 20 near the suction nozzle 33.

[0034] The circuit board and battery are both electrically connected to the heating assembly 10. A controller can be installed on the circuit board to control the heating temperature, heating mode, etc. of the heating assembly 10. The battery can supply power to the heating assembly 10. An airflow sensor is electrically connected to the controller. The airflow sensor is used to sense the user's suction action to generate a suction signal. The controller can respond to the suction signal to control the heating assembly 10 to heat up, or the controller can count the number of suctions based on the suction signal.

[0035] As shown in Figures 4-8, this application provides a heating assembly 10, which includes a cup body 11 and a heating element 12. The heating element 12 can also be referred to as a heater. The cup body 11 is disposed within the housing 20 and located near the nozzle 33. The cup body 11 and the nozzle 33 can be arranged opposite each other in a first direction for application in an open-top aerosol generating device. The first direction can be aligned with the axis of the cup body 11 and the axis of the nozzle 33.

[0036] The cup body 11 has a central portion and an outer portion located outside the central portion. For example, the central portion is a cylindrical cavity, and the outer portion is tubular, surrounding the outer periphery of the central portion.

[0037] The central portion has a receiving cavity 111 and a heating cavity 112. The cup body includes side walls and a bottom wall, which form an air guiding channel, including the receiving cavity 111 and the heating cavity 112. The nozzle 33 can cooperate with the cup body 11 to cover the aerosol product 40 inside the receiving cavity 111. One end of the receiving cavity 111 has an opening 1111, and the heating cavity 112 is located at the end of the receiving cavity 111 away from the opening 1111. The opening 1111 is used to allow the aerosol product 40 to be inserted into the receiving cavity 111. That is, one end of the cup body 11 in the first direction has an opening 1111, which can also be called the open end, and the other end of the cup body 11 in the first direction has a closed end. Corresponding to the cup body 11, the nozzle 33 is open at both ends in the first direction and has a corresponding opening 332 and an air outlet channel 331 in the first direction. The opening 332 faces the cup body 11 and is correspondingly arranged with the opening 1111. When the cover 30 is fastened to the housing 20, the opening 1111 is aligned with the opening 332 on the cover 30, so that the aerosol generated by the aerosol product 40 in the accommodating cavity 111 can enter the air outlet channel 331 of the nozzle 33 through the opening 1111 and the opening 332. When the cover 30 is opened from the housing 20, the opening 1111 is exposed from the housing 20, so that the aerosol product 40 can be inserted into or removed from the accommodating cavity 111.

[0038] It should be noted that the shapes of the housing 20 and the lid 30 are not limited to the examples in Figures 1 and 2, and can be set to other shapes and structures according to specific usage needs. The opening method of the lid 30 is not limited to the flip-open opening shown in Figure 2, that is, by rotating the connecting piece 31 to form a rotatable connection between the lid 30 and the housing 20, so that the cup 11 inside the housing 20 can be exposed by flipping the lid 30 open; of course, the lid 30 can also be opened by sliding or rotating. In addition, as shown in the examples in Figures 1 and 2, a locking piece 32 adapted to the lid 30 can also be provided so that the lid 30 can be locked by the locking piece 32 when the lid 30 is closed, so that the lid 30 can be opened accidentally by free movement.

[0039] In one embodiment, the cup body 11 is made of one or more materials such as stainless steel, ceramic, copper, iron, and nickel. For example, the material of the cup body 11 may include stainless steel, ceramic, copper, iron, nickel, copper-nickel alloy, iron-nickel alloy, and copper-zinc alloy. Exemplarily, the material of the cup body 11 is copper-zinc alloy. An insulation layer (not shown) can be plated on the inner surface of the heating chamber 112 and the receiving chamber 111, that is, an insulation layer can be plated on the inner wall of the cup body 11. The insulation layer can be, for example, a ceramic layer, and the thickness of the insulation layer can be 0.01mm-0.08mm. The insulation layer can keep the temperature warm and prevent oil from sticking to the inner wall.

[0040] A heating element 12 is disposed within a heating chamber 112 to heat the gas flowing into the heating chamber 112 into a hot gas stream. The hot gas stream flows into a receiving cavity 111 to heat the aerosol product 40. The temperature of the hot gas stream is 120℃-350℃, the flow rate is 17.5mL / s-30mL / s, and the density is 0.65kg / m³. 3 -0.94kg / m 3 The cup body 11, the nozzle 33, and the heating element 12 are not limited to cylindrical structures; they can also adopt prismatic structures or other structural forms depending on the specific usage requirements.

[0041] As shown in Figure 7-9, the outer portion is provided with a first air inlet channel 113, which can also be called an air guide hole or air inlet interlayer. The first air inlet channel 113 extends approximately along the axial direction of the cup body 11 and has an air inlet end 1131 and an air outlet end 1132. The air inlet end 1131 is located on the side of the accommodating cavity 111 away from the heating cavity 112, that is, the air inlet end 1131 is located near the opening 1111, and the air outlet end 1132 is located on the side away from the opening 1111. One end of the heating cavity 112 is connected to the air outlet end 1132, and the other end is connected to the accommodating cavity 111. The airflow enters the first air inlet channel 113 from the air inlet end 1131 and flows into the heating cavity 112 from the air outlet end 1132. In the heating cavity 112, it is heated into a hot airflow and then enters the accommodating cavity 111 to heat the aerosol product 40.

[0042] The heating assembly 10 of this application integrates the first air intake channel 113, the heating chamber 112 for heating the hot airflow, and the accommodating cavity 111 for accommodating the aerosol product 40 within the cup body 11. The heating assembly 10 can be manufactured and installed as a separate component. Since the first air intake channel 113 is formed within the cup body 11, there is no need to set up additional air intake structural components within the aerosol generating device, reducing the number of parts and simplifying the structural design within the device. Compared to using different parts to separately set the first air intake channel 113, heating chamber 112, and accommodating cavity 111, which connects different spaces through seals, leading to too many parts and potential sealing problems, this application integrates the first air intake channel 113, heating chamber 112, and accommodating cavity 111 within the central and outer portions of the cup body 11. The cup body 11 has better overall sealing, avoiding the problem of different parts needing to connect internal spaces through seals. This avoids problems such as easy aging of seals and poor sealing, improving the user's suction experience.

[0043] As shown in Figure 9, in one embodiment, the outer portion is provided with multiple first air intake channels 113 and multiple cooling chambers 114. Exemplarily, the number of first air intake channels 113 and cooling chambers 114 is greater than ten. Each first air intake channel 113 is arranged at intervals along the circumference of the cup body 11, and at least one cooling chamber 114 is provided between every two adjacent first air intake channels 113. That is, as shown in the embodiment of Figure 6, one cooling chamber 114 is provided between every two adjacent first air intake channels 113, that is, the first air intake channels 113 and cooling chambers 114 are alternately arranged along the circumferential direction of the outer portion. In other embodiments, two or more cooling chambers 114 may be provided between every two adjacent first air intake channels 113, and each cooling chamber 114 is also arranged at intervals along the circumferential direction of the outer portion.

[0044] Further, in one embodiment, as shown in Figures 4-6, the nozzle 33 also includes a cooling air passage 333 and a second air intake passage 334. The second air intake passage 334 surrounds the outer periphery of the cooling air passage 333. When the cover 30 is placed on the housing 20, one end of the cooling air passage 333 communicates with the receiving cavity 111, and the other end of the cooling air passage 333 communicates with the air outlet passage 331 of the nozzle 33. The second air intake passage 334 communicates with the external atmosphere, which can be achieved by opening an air inlet 335 on the nozzle 33, connecting the external atmosphere and the second air intake passage 334. When the cover 30 is fastened to the housing 20, the second air intake passage 334 of the nozzle 33 communicates with the air inlet end 1131 of the first air intake passage 113 of the cup body 11, and the cooling air passage 333 of the nozzle 33 communicates with the receiving cavity 111 of the cup body 11. When the user inhales at the nozzle 33, the airflow passes through the air inlet 335, the second air inlet channel 334, the first air inlet channel 113, and the heating chamber 112 in sequence before entering the accommodating chamber 111 and heating the aerosol product 40. The airflow then carries the aerosol generated by the aerosol product 40 into the cooling airway 333 for cooling, and finally flows out from the outlet channel 331.

[0045] As shown in the example in Figure 6, at least one cooling structure 3331 is provided in the cooling air duct 333 for cooling the hot airflow. The cooling structure 3331 can adopt different structural forms, such as the constricted structure shown in Figure 6, where the ventilation area of ​​the cooling structure 3331 gradually decreases in the direction away from the cup body 11 along the first direction to achieve a cooling effect on the hot airflow; while the end of the cooling structure 3331 facing the air outlet 331 is set as an open form with a gradually increasing ventilation area to reduce the flow velocity after the airflow passes through. When multi-stage cooling is required, multiple cooling structures 3331 can be arranged at intervals along the first direction in the cooling air duct 333 to meet the actual cooling requirements.

[0046] The aerosol generating apparatus and heating assembly 10 of this application have a first air inlet channel 113 and a cooling chamber 114 arranged outside the central accommodating cavity 111 and heating cavity 112. The heat transferred outward from the heating cavity 112 and accommodating cavity 111 can reach the first air inlet channel 113 to preheat the gas in the first air inlet channel 113. The gas in the first air inlet channel 113 is heated into a hot airflow through the heating cavity 112 and finally flows into the accommodating cavity 111 to heat the aerosol product 40. Therefore, the heat transferred outward from the heating cavity 112 and accommodating cavity 111 can also be used to heat the aerosol product 40, thus improving the energy utilization rate of the heating assembly 10. Generally, the airflow in the first air inlet channel 113 can be preheated to 50°C-100°C before entering the heating cavity 112 for further heating. Furthermore, the cooling chamber 114 provided outside the heating chamber 112 and the accommodating chamber 111 can reduce the heat dissipated from the cup body 11, retain the heat inside the heating component 10, prevent the aerosol generating device from getting too hot to handle, and prevent damage to other parts inside the aerosol generating device.

[0047] In one embodiment, as shown in FIG9, the total contact area between the plurality of first air intake channels 113 and the outer wall of the heating chamber 112 is greater than the total contact area between the plurality of cooling chambers 114 and the outer wall of the heating chamber 112, and / or, the contact area between each first air intake channel 113 and the outer wall of the heating chamber 112 is greater than the contact area between each cooling chamber 114 and the outer wall of the heating chamber 112. With this structure, most of the heat dissipated from the outer wall of the heating chamber 112 will enter the first air intake channel 113, and a small portion of the heat will enter the cooling chamber 114. This allows most of the dissipated heat to be used to preheat the gas within the first air intake channel 113, thereby improving the energy utilization rate of the heating assembly 10. The cooling chamber 114 can retain the small portion of heat that does not enter the first air intake channel 113 within the heating assembly 10, preventing further heat dissipation to the outside of the cup body 11. Furthermore, the total contact area between the plurality of first air intake channels 113 and the outer wall of the accommodating cavity 111 is greater than the total contact area between the plurality of cooling cavities 114 and the outer wall of the accommodating cavity 111, and / or, the contact area between each first air intake channel 113 and the outer wall of the accommodating cavity 111 is greater than the contact area between each cooling cavity 114 and the outer wall of the accommodating cavity 111.

[0048] In one embodiment, the outer walls of the cooling cavity 114 and the heating cavity 112 are in line contact, that is, the outlines of the two adjacent first air intake channels 113 in contact with the outer walls of the heating cavity 112 are connected by lines. Thus, the first air intake channels 113 are in surface contact with the outer walls of the heating cavity 112, while the cooling cavity 114 is in line contact with the outer walls of the heating cavity 112. This allows the contact area between the outer walls of the heating cavity 112 and the first air intake channels 113 to be larger than the contact area between the cooling cavity 114 and the outer walls of the heating cavity 112, thereby improving the energy utilization rate of the heating assembly 10 and reducing heat loss. In other embodiments, the outer walls of the cooling cavity 114 and the heating cavity 112 may be in surface contact, meaning that the outlines of the two adjacent first air inlet channels 113 in contact with the outer walls of the heating cavity 112 are spaced apart. It is sufficient to ensure that the surface contact area between the cooling cavity 114 and the outer walls of the heating cavity 112 is smaller than the surface contact area between the first air inlet channels 113 and the outer walls of the heating cavity 112. Increasing the contact area between the cooling cavity 114 and the outer walls of the heating cavity 112 can improve the heat preservation effect inside the cup body 11 and reduce the proportion of heat dissipated to the outside of the cup body 11. Further, the outer walls of the cooling cavity 114 and the receiving cavity 111 may be in line contact, or they may be in surface contact.

[0049] In one embodiment, the axial cross-sectional area of ​​each first air intake channel 113 on the side near the center portion is greater than the axial cross-sectional area of ​​the first air intake channel 113 on the side away from the center portion, that is, the inner diameter of the first air intake channel 113 decreases from the inside to the outside. In one embodiment, the inner diameter of the first air intake channel 113 can be 0.1mm-2mm. In one embodiment, the axial cross-sectional area of ​​the first air intake channel 113 gradually decreases from the side near the center portion to the side away from the center portion, that is, the inner diameter of the first air intake channel 113 gradually decreases from the inside to the outside. Because the inner diameter of the first air intake channel 113 is relatively large, the heat emitted from the outer wall of the heating chamber 112 is preferentially used to enter the first air intake channel 113 to heat the gas inside, thereby improving the utilization rate of heat in the heating chamber 112. When the heat in the first air intake channel 113 is further dissipated outwards, the relatively small inner diameter of the outer side results in a smaller contact area between the first air intake channel 113 and the outermost wall of the cup body 11, thus reducing the proportion of heat dissipated outwards. Furthermore, the axial cross-sectional area of ​​each cooling chamber 114 near the center is smaller than the axial cross-sectional area away from the center, meaning the inner diameter of the cooling chamber 114 gradually increases from the inside to the outside, further improving the heat preservation effect inside the cup body 11.

[0050] In one embodiment, the interface between the plurality of first air intake channels 113 and the plurality of cooling chambers 114 can be wavy or sawtooth-shaped. In another embodiment, the radial cross-section of a single first air intake channel 113 and a single cooling chamber 114 can be approximately triangular, semi-circular, rectangular, or the like.

[0051] In one embodiment, the cooling cavity 114 extends at least radially outward from the heating cavity 112. Since the heating cavity 112 is the cavity with the highest internal temperature in the cup body 11, the cooling cavity 114, located radially outward from the heating cavity 112, can prevent heat from the high-temperature area from dissipating from the cup body 11. Exemplarily, the cooling cavity 114 extends from the side of the outer portion near the opening 1111 of the receiving cavity 111 to the side of the outer portion away from the opening 1111, so that the cooling cavity 114 can keep the heat dissipated outward from the receiving cavity 111.

[0052] In one embodiment, the cooling cavity 114 is a sealed cavity, and a vacuum cavity can be formed inside the cooling cavity 114, creating a pressure difference of -30 bar to -10 bar between the cooling cavity 114 and the outside of the cup body 11. Alternatively, the cooling cavity 114 can be filled with heat-insulating filler, cooling medium, or heat dissipation material. For example, at least one cooling cavity 114 can be filled with aerogel, or, as shown in FIG10, at least one cooling cavity 114 can be provided with a metal foil 50 that has been bent and stacked multiple times. The metal foil 50 after multiple bends has a large heat absorption area, thereby reducing the proportion of heat dissipated to the outside of the cooling cavity 114.

[0053] In one embodiment, as shown in FIG6, a diversion channel 115 can be provided at the connection between the housing 20 and the nozzle 33, leading from the second air inlet channel 334 to the cooling air channel 333. This diversion channel 115 allows ambient air to enter the cooling air channel 333 during user suction, mixing with the aerosol flowing out of the accommodating cavity 111 and cooling the aerosol. Additionally, the diversion channel 115 can be equipped with a one-way valve 60 (as shown in FIG7 and FIG8) that allows gas to flow unidirectionally towards the cooling air channel 333. The one-way valve 60 can be, for example, a Tesla valve. The total gas flow rate to all diversion channels 115 can be no greater than the total gas flow rate to the heating element 12 to ensure that aerosol can be drawn into the nozzle 33. The airflow can flow from the second intake channel 334 into the cooling channel 333, but cannot flow from the cooling channel 333 into the second intake channel 334. This allows the cold air to mix with the aerosol, reducing its temperature and diluting it to prevent overheating and burns. The one-way valve 60 also prevents the aerosol from flowing into the second intake channel 334. The airflow in the second intake channel 334 is split by 10%-50% at the split channel 115. The gas flow rate within the one-way valve 60 is, for example, 17.5 mL / s-30 mL / s. The aerosol-to-air dilution ratio is 1:2-1:1, and the aerosol temperature can be reduced from 175°C to 80°C at the outlet of the one-way valve 60. The split channel 115 can be located on the nozzle 33, the housing 20, or both, with the nozzle 33 and housing 20 together forming the split channel 115. For example, the one-way valve 60 can be set on the nozzle 33 or on the housing 20. Alternatively, half of the one-way valve 60 can be set on both the nozzle 33 and the housing 20. When the nozzle 33 and the housing 20 are connected, the two halves of the one-way valve 60 are spliced ​​together to form a complete one-way valve 60.

[0054] As shown in Figures 8 and 11, in one embodiment, the heating assembly 10 further includes a gas collecting element 70. The gas collecting element 70 is disposed within the heating chamber 112 and on the side of the heating element 12 facing the receiving cavity 111, used to increase the flow rate of the hot airflow after passing through the gas collecting element 70. The heating assembly 10 provided in this application, by providing the gas collecting element 70 within the cup body 11, allows the hot airflow to increase its flow rate after passing through the gas collecting element 70. Therefore, the flow rate of the hot airflow within the receiving cavity 111 per unit time is greater, resulting in higher overall heating efficiency of the hot airflow on the aerosol product 40, leading to more thorough heating, better heating effect, and a greater amount of aerosol produced. This prevents waste of matrix material and meets the user's need to extract a large amount of aerosol in a short time.

[0055] In one embodiment, as shown in Figures 8 and 11, the gas collecting member 70 has a plurality of gas collecting holes 71, where "a plurality of" means that the number of gas collecting holes 71 is at least two. The diameter of the gas collecting hole 71 facing the heating element 12 is larger than the diameter of the side facing away from the heating element 12. That is, when the airflow flows from the side of the gas collecting hole 71 close to the heating element 12 to the side away from the heating element 12, the airflow velocity will increase because the diameter of the gas collecting hole 71 is smaller, thereby increasing the speed at which the hot airflow flows into the receiving cavity 111.

[0056] In one embodiment, the aperture of each air collecting hole 71 changes linearly, that is, the aperture of the air collecting hole 71 changes gradually, so that the airflow velocity changes uniformly. In other embodiments, the aperture of the air collecting hole 71 may also change in a curved manner, or the aperture of the air collecting hole 71 may change abruptly, or the aperture of the air collecting hole 71 may have at least one of the following: linear change, curved change, abrupt change.

[0057] In one embodiment, the ratio of the diameter of the air collecting hole 71 on the side away from the heating element 12 to the diameter of the air collecting hole 71 on the side facing the heating element 12 is 1:5-1:2. By controlling this diameter ratio, the acceleration of the hot airflow can be controlled. When the length of the holes is the same, the smaller the diameter ratio, the faster the hot airflow accelerates, which can make the heating efficiency of the hot airflow higher.

[0058] In one embodiment, the radial cross-section of each air collecting hole 71 is circular, triangular, or polygonal.

[0059] In one embodiment, each air collecting hole 71 is evenly distributed in the circumferential and radial directions of the air collecting member 70 so that the hot airflow is uniformly accelerated to the receiving cavity 111 in the radial and circumferential directions.

[0060] In one embodiment, the gas collecting element 70 can be a thermally conductive material, such as a metal or ceramic with good thermal conductivity. By setting the gas collecting element 70 as a thermally conductive material, the gas collecting element 70 can also transfer a portion of the heat from the heating chamber 112 to the receiving chamber 111, thereby improving the heating efficiency of the aerosol product 40.

[0061] As shown in Figure 8, in one embodiment, the outer wall of the gas collecting component 70 is arranged closely around the inner wall of the heating chamber 112, that is, the outer wall of the gas collecting component 70 is arranged closely around the inner wall of the cup body 11. This can prevent hot airflow from passing through the gap between the outer wall of the gas collecting component 70 and the inner wall of the heating chamber 112, and ensure that the hot airflow passes through the gas collecting hole 71 of the gas collecting component 70, so as to achieve precise guidance and uniform heating of the hot airflow and avoid local scorching of the aerosol product 40.

[0062] In one embodiment, a gas collecting element 70 is disposed on a heating element 12. Multiple heating channels 121, also known as heat exchange holes, are disposed throughout the heating element 12. These heating channels 121 can extend along a first direction. Airflow enters the central portion through the first air inlet channel 113, then flows through the heating channels 121 to the receiving cavity 111. As the airflow passes through the heating channels 121, it is heated to form a hot airflow. This hot airflow enters the receiving cavity 111 and heats the aerosol product 40 to generate the corresponding aerosol. Each gas collecting hole 71 is positioned opposite and connected to its corresponding heating channel 121. The heating channel 121 is connected to the receiving cavity 111 through its corresponding gas collecting hole 71. Exemplarily, the number of gas collecting holes 71 and heating channels 121 are the same and correspond one-to-one. By connecting the gas collecting holes 71 to the heating channels 121, each gas collecting hole 71 can accelerate the airflow within each heating channel 121, thereby achieving precise guidance and uniform heating of the hot airflow.

[0063] It is understandable that in some aerosol generating devices, if heating elements are installed on the outer or bottom wall of the cup body to heat the airflow, the heat conduction effect of the cup body is difficult to improve effectively. Moreover, the airflow in different air inlet channels will impact each other after entering the cup body, which can easily lead to airflow turbulence. After the airflow is heated, there will be a large temperature difference, resulting in uneven heating of the aerosol product.

[0064] In this embodiment, the heating component 10 is improved and optimized by setting a heating element 12 with multiple heating channels 121 inside the cup body 11. This allows the gas passing through the heating channels 121 to be heated to form a hot airflow, which in turn heats the aerosol product 40 inside the accommodating cavity 111. This effectively alleviates the airflow turbulence, balances the temperature difference between different areas, and alleviates the problem of uneven heating, which is beneficial to improving the heating effect of the aerosol product 40.

[0065] In practical applications, since the heating element 12 can heat the airflow passing through the heating channel 121 to form a hot airflow in this embodiment, the heating element 12 can contact the bottom of the aerosol product 40 when the gas collecting element 70 is not provided. When the gas collecting element 70 is provided, a certain gap can be provided between the heating element 12 and the bottom of the aerosol product 40. Both methods can achieve the heating effect of the aerosol product 40.

[0066] For example, the heating element 12 can be in contact with and fit against the inner wall of the heating chamber 112, and the aerosol product 40 can be fitted against or have a very small gap with the inner wall of the cup body 11 so that the hot airflow can pass through the aerosol product 40 for heating as much as possible.

[0067] As shown in Figures 12-14, in one embodiment, the heating element 12 includes a heat-conducting substrate 122 and a heating element 123. The heat-conducting substrate 122 has multiple heating channels 121 extending along a first direction, and each heating channel 121 extends along the first direction. The heating element 123 has a mesh structure and is circumferentially wrapped around the outer wall of the heat-conducting substrate 122. The heating element 123 can be electrically connected to a battery to generate heat when energized and to heat the heat-conducting substrate 122. By setting the heating element 123 with a mesh structure, on the one hand, the coverage area of ​​the heating element 123 can be expanded, saving materials; on the other hand, heat conduction can be promoted, reducing energy consumption. Airflow can pass through the heat-conducting substrate 122 through different heating channels 121 and be heated to form a hot airflow while passing through, so as to heat the aerosol product 40 in the accommodating cavity 111, which can be referred to as the accommodating space.

[0068] Further, as illustrated in the examples in Figures 12-14, the heating element 123 includes a positive electrode line 1231, a negative electrode line 1232, and a heating pattern 1233. The positive electrode line 1231 and the negative electrode line 1232 are spaced apart axially in the heat-conducting substrate 122. The heating pattern 1233 is located between the positive electrode line 1231 and the negative electrode line 1232, with one end of the heating pattern 1233 connected to the positive electrode line 1231 and the other end connected to the negative electrode line 1232 in the axial direction of the heat-conducting substrate 122, forming a mesh-like structure for the heating element 123. In application, the positive electrode line 1231 and the negative electrode line 1232 can be electrically connected to a battery to form an energized circuit in the heating element 123, thereby generating heat from the heating pattern 1233. The positive electrode line 1231 and the negative electrode line 1232 can adopt the circuit structure shown in Figure 12, and the spacing between them and the shape of the heating pattern 1233 can be adjusted according to different heat generation requirements.

[0069] Furthermore, in some embodiments, as shown in the examples in Figures 12-14, the heating pattern 1233 includes multiple sets of heating structures 1234 arranged sequentially in the circumferential direction. Each set of heating structures 1234 is connected to both the positive electrode line 1231 and the negative electrode line 1232, and each set of heating structures 1234 includes multiple heating units 1235 connected sequentially along the axial direction of the heat-conducting substrate 122. Specifically, a heating unit 1235 adjacent to the positive electrode line 1231 along the axial direction of the heat-conducting substrate 122 is connected to the positive electrode line 1231, and a heating unit 1235 adjacent to the negative electrode line 1232 is connected to the negative electrode line 1232, forming a mesh-like heating structure. It should be noted that the number of sets of heating structures 1234 and the number of heating units 1235 in each set can be set according to the specific dimensions of the heating substrate; the heating units 1235 are not limited to the shapes shown in Figures 12 to 14, and can also adopt other structural forms.

[0070] Furthermore, as shown in the example in Figure 13, among the multiple sets of heating structures 1234, at least one set is spaced apart in the circumferential direction, that is, there is a certain gap between at least one set of heating structures 1234 and other adjacent heating structures 1234 in the circumferential direction, and the two do not directly contact each other, so that the heating structure 1234 forms a parallel relationship with other heating structures 1234.

[0071] Furthermore, as shown in the example in Figure 14, the heating pattern 1233 also includes a connecting line 1236, which is located between at least two sets of adjacent heating structures 1234, and the two ends of the connecting line 1236 are respectively connected to the positive electrode line 1231 and the negative electrode line 1232, such as the connecting line 1236 extending along the axial direction of the heat-conducting substrate 122 shown in Figure 14; adjacent heating structures 1234 can be connected to the connecting line 1236 so that the adjacent heating structures 1234 are connected as one unit in the circumferential direction.

[0072] In a further embodiment of this application, as shown in the examples in Figures 12 to 14, each heating unit 1235 of the heating pattern 1233 is a hollow structure, which can further reduce power consumption and increase heating temperature. Optionally, the heating unit 1235 can adopt a closed pattern, such as the elliptical structure shown in Figure 12, or a circular structure. Of course, the heating unit 1235 can also adopt a non-closed structure, such as the X-shaped structure shown in Figures 13 and 14.

[0073] In some embodiments, the heating element 123 may be in the form of a flexible printed circuit, which is connected to the outer wall of the heat-conducting substrate 122 by printing and forms an integral structure.

[0074] In a further embodiment of this application, as shown in the examples in Figures 12 to 14, a plurality of heating channels 121 on the heat-conducting substrate 122 are arranged in an array relative to the central axis of the heat-conducting substrate 122, so that the arrangement of the plurality of heating channels 121 is more uniform, and the hot airflow generated by the gas passing through the plurality of heating channels 121 is more uniformly distributed. The heating channels 121 can be arranged in a ring array as shown in Figure 12, forming multiple concentric circles arranged in a ring shape, to further increase the number of heating channels 121 within a limited space and improve heating efficiency. It should be noted that the arrangement of the heating channels 121 is not limited to the ring array shown in Figure 12, and can also be set in a matrix form. In some embodiments, an arrangement adapted to the shape of the heat-conducting substrate 122 may be selected. For example, when the heat-conducting substrate 122 adopts a cylindrical structure as shown in Figure 12, the heating channels 121 are arranged in a ring array. When the heat-conducting substrate 122 adopts a cube or cuboid shape, the heating channels 121 are arranged in a matrix. This is beneficial to further improve space utilization, increase the number of heating channels 121, and make the distribution of heating channels 121 more uniform.

[0075] In a further embodiment of this application, as shown in Figures 12 to 14, the porosity of the heat-conducting substrate 122 is set to 20% to 85%, meaning that the total volume of all heating channels 121 accounts for 20% to 85% of the volume within the three-dimensional space formed by the heat-conducting substrate 122. Further, the porosity can be set within the range of 25% to 80%, for example, 60%, 65%, 70%, and 75%, effectively balancing the structural requirements of the heat-conducting substrate 122 with the heating requirements. In practical applications, different numbers of heating channels 121 can be set according to the specific dimensions of the heat-conducting substrate 122 to meet the aforementioned porosity requirements.

[0076] In some embodiments, as shown in Figures 12 to 14, the ratio of the total volume of all heating channels 121 to the volume of the heat-conducting substrate 122 is in the range of 1:5.5 to 1:1.5 (including the values ​​at both ends). The volume of the heat-conducting substrate 122 specifically refers to the solid volume (i.e., the volume of the solid excluding the heating channels 121). Further, the above volume ratio is in the range of 1:5 to 1:2, for example, 1:4.5, 1:4, 1:3.5, 1:3, and 1:2.5. This can meet the structural requirements of the heat-conducting substrate 122 while simultaneously meeting the heating requirements. Specifically, different numbers of heating channels 121 can be set according to the specific dimensions of the heat-conducting substrate 122 to meet the above volume ratio requirements.

[0077] In some embodiments, as shown in Figures 12 to 14, the total number of heating channels 121 can be 2N, where N is a positive integer. The aperture size of the heating channels 121 can be set in the range of 0.1 mm to 1 mm. The shape of the heating channels 121 can be a circular hole as shown in the figures, or it can be a square hole or other types of holes, such as regular polygonal holes, as needed. Furthermore, heating channels 121 of different shapes can be set simultaneously according to usage requirements, that is, multiple heating channels 121 include two or more combinations of the aforementioned different hole shapes. For example, in one example, multiple heating channels 121 can be arranged in a ring array, with the heating channels 121 in the outer ring using circular holes and the heating channels 121 in the inner ring using square holes. This arrangement helps to fully utilize the limited space of the heat-conducting substrate 122, increase the number of heating channels 121, and make the arrangement of the heating channels 121 more uniform, thereby further increasing the generated hot airflow and enhancing the heating effect.

[0078] As shown in Figures 18-20, the outer periphery of the heating element 12 is attached to the cavity wall of the heating chamber 112, that is, the outer periphery of the heating element 12 is attached to the side wall of the cup body 11, so as to divide the air guiding channel into an air guiding cavity 116 and a receiving cavity 111 spaced apart in the first direction. The receiving cavity 111 is located at the end of the heating element 12 away from the bottom wall. The cup body 11 has an air guiding cavity 116 on the side of the heating element 12 away from the receiving cavity 111. A first air intake channel 113 is provided in the side wall of the cup body 11. One end of the first air intake channel 113 is connected to the outside, and the other end is connected to the air guiding cavity 116. A guide section 1161 is provided in the air guiding cavity 116. The guide section 1161 is used to guide the air entering the air guiding cavity 116 from the first air intake channel 113 to the bottom of the heating element 12, so that the airflow can pass through the heating channel 121 of the heating element 12.

[0079] It is understandable that the first air intake channel 113 is relatively close to the outer edge of the air guide cavity 116. When the airflow enters the air guide cavity 116, the flow direction needs to change. Especially when the gas enters from different directions around the air guide cavity 116, it is easy for mutual impact to occur, resulting in turbulent multi-sided airflow. This will also cause differences in the amount of air passing through the heating channel 121 in different areas of the heating element 12, resulting in a large temperature difference in the hot airflow after heating, causing uneven heating.

[0080] In this embodiment, the heating component 10, through structural improvements and optimizations, uses the guide section 1161 within the air guide cavity 116 to separate and guide the gas flowing into the air guide cavity 116 from the first air inlet channel 113. This allows the gas from different directions to flow more smoothly toward the heating element 12, preventing airflow turbulence. Furthermore, the airflow can pass more evenly through the heating channels 121 in different areas of the heating element 12, thereby improving the problem of large temperature differences and uneven heating in different areas of the hot airflow, which is beneficial for improving the heating effect on the aerosol product 40.

[0081] As shown in Figures 15 and 18, within the air guide cavity 116, a flow guide 1161 is connected to the bottom wall of the air guide cavity 116 away from the heating element 12. The flow guide 1161 blocks the lateral flow of the intake airflow, thus separating the intake airflows in different directions. The flow guide 1161 has a first flow guide surface 1162, which is inclined toward the bottom centerline of the heating element 12 to guide the airflow. When the airflow enters the air guide cavity 116 from the first intake channel 113 and flows laterally to the flow guide 1161, it can change its flow direction under the guidance of the first flow guide surface 1162 and turn to move along the first direction and approach the bottom of the heating element 12. Then, it passes through different heating channels 121 on the heating element 12 and generates hot airflow after being heated. It is understandable that airflow is prone to impact when it encounters obstacles during its movement, which can easily cause airflow turbulence. The first guide surface 1162 can guide the airflow so that the airflow changes its direction of movement more smoothly, which helps to reduce airflow impact, prevent airflow turbulence, and enable the airflow to cover the bottom surface of the heating element 12 more evenly, so that the airflow distribution in different heating channels 121 is more uniform.

[0082] Among them, the first guide surface 1162 can be set in different forms according to actual usage needs.

[0083] In some embodiments, as shown in the examples in Figures 15 and 16, the first guide surface 1162 adopts a smooth curved surface structure to enhance the guiding effect, making the airflow move more smoothly under the guidance of the first guide surface 1162, while expanding the coverage area of ​​the first guide surface 1162 and guiding the airflow in different directions. In one embodiment, the first guide surface 1162 can adopt a structure with a straight profile in the longitudinal cross-section as shown in Figure 15, or it can adopt a concave curve profile in the longitudinal cross-section as shown in Figure 16, to make the first guide surface 1162 smoother and further enhance the stability when guiding the airflow.

[0084] In some embodiments, as shown in Figures 15 and 16, the first guide surface 1162 is a continuous structure extending in the circumferential direction, that is, there is no discontinuity or protrusion in the circumferential direction, so as to guide the airflow in any direction in the circumferential direction and increase the guide coverage range in the circumferential direction.

[0085] In some embodiments, as shown in the example in FIG15, the flow guide 1161 can adopt a frustum-shaped structure, and the first flow guide surface 1162 is a circular inclined surface in the circumferential direction. The distance from the center line of the flow guide 1161 at any position in the circumferential direction is equal, so it can play a flow guiding role in any direction in the circumferential direction. Moreover, the airflow in different directions is more evenly distributed after being guided by the first flow guide surface 1162, which is conducive to further improving the flow guiding effect.

[0086] In some embodiments, as shown in the example in FIG17, the first guide surface 1162 adopts an inclined planar structure. The guide portion 1161 has multiple different first guide surfaces 1162 in the circumferential direction. The same first guide surface 1162 has the same inclination angle relative to the inner wall surface of the air guide cavity 116. In the direction close to the heating element 12 along the first direction, each first guide surface 1162 is inclined towards the bottom centerline of the heating element 12, which can also achieve the function of guiding the airflow. The guide portion 1161 can also adopt a structural form adapted to the shape of the first guide surface 1162, such as the four-sided pyramidal structure shown in FIG17, which has four first guide surfaces 1162. Of course, other numbers of first guide surfaces 1162 can also be provided, depending on the actual usage requirements.

[0087] In a further embodiment of this application, as shown in FIG18, the guide portion 1161 is located on the center line of the heating element 12. In the first direction, there is a first distance H between the guide portion 1161 and the heating element 12, so that space is reserved between the guide portion 1161 and the heating element 12 for lateral airflow movement. After the airflow is guided by the guide portion 1161, it can generate lateral movement on the air intake side of the heating element 12, so that the airflow can enter different heating channels 121, which is beneficial to improving the uniformity of airflow distribution.

[0088] Further, as shown in the example in Figure 18, the interface between the walls of the air guide cavity 116 and the heating cavity 112 in the first direction is the first interface 117, that is, the air guide cavity 116 and the heating cavity 112 are connected at the first interface 117. In the first direction, the wall of the heating cavity 112 extends to the first interface 117 and has a first gap h1 between it and the bottom wall of the air guide cavity 116 away from the heating cavity 112. The first air intake channel 113 communicates with the air guide cavity 116 through the first gap h1, so that the airflow in the first air intake channel 113 can smoothly enter the air guide cavity 116. Correspondingly, in the first direction, the bottom surface of the heating element 12 is higher than the bottom surface of the wall of the heating cavity 112, that is, a second gap h2 exists between the bottom surface of the heating element 12 and the first interface 117. It is understandable that when the gas in the air guide cavity 116 flows to the bottom surface of the heating element 12 under the guidance of the flow guide 1161, some of the airflow will inevitably flow laterally to the cavity wall of the heating cavity 112. Due to the existence of the second gap h2, the airflow flowing to the cavity wall of the heating cavity 112 can be further guided, so that the airflow turns and flows back to the air guide cavity 116, so as to prevent the airflow from flowing back to the first air intake channel 113, which helps to prevent the phenomenon of airflow turbulence in the first air intake channel 113.

[0089] In a further embodiment of this application, as shown in the example in FIG18, the inner wall of the heating cavity 112 has a support structure 118, which protrudes towards the central axis of the cup body 11. The periphery of the heating element 12 is supported on the support structure 118, and the support structure 118 provides support for the heating element 12. In one embodiment, the support structure 118 is located at one end of the heating cavity 112 near the air guide cavity 116. The support structure 118 can be in the form of a support block as shown in FIG18, and multiple support blocks are spaced apart in the circumferential direction of the heating cavity 112 to form multi-point support for the heating element 12; or, the support structure 118 can also be set as a continuous structure extending in the circumferential direction, so that a step-like structure is formed in the heating cavity 112, which can increase the contact area with the heating element 12 and make the support more stable.

[0090] In a further embodiment of this application, as shown in the example in FIG19, in the cup body 11, the radial dimension of the heating cavity 112 gradually decreases in the direction close to the air guide cavity 116 along the first direction. That is, part or all of the heating cavity 112 forms a funnel-shaped constriction structure, so that at least part of the cavity wall of the heating cavity 112 is inclined. The outer wall of the heating element 12 matches the inner wall of the cup body 11. The heating element 12 is disposed in the heating cavity 112 so that the cavity wall of the heating cavity 112 can support the heating element 12. The inclination angle of the cavity wall of the heating cavity 112 can be set according to the central part and the specific size of the heating element 12. Among them, a structure with a gradually decreasing outer contour can be used only in a part of the air guide channel close to the air guide cavity 116. Of course, the entire air guide channel can also be set as a structure with a gradually decreasing outer contour. The inclination angle of the inner wall of the cup body 11 can be set according to the specific size of the air guide channel and the heating element 12.

[0091] In a further embodiment of this application, on the radial projection plane, the orthographic projection (projection on the radial projection plane) of the first air intake channel 113 and the heating element 12 is entirely located inside the air guide cavity 116. That is, the coverage area of ​​the end of the air guide cavity 116 facing the heating element 12 is larger than the cross-sectional area of ​​the heating cavity 112. The air guide cavity 116 can completely cover all the heating channels 121 on the heating element 12, so that when the airflow passes through the guide portion 1161 and turns to flow in the first direction, other obstruction structures are avoided, which is beneficial to improving airflow permeability. The periphery of the air guide cavity 116 has a second guide surface 1163 connecting the first air intake channel 113, so that when the airflow enters the air guide cavity 116 from the first air intake channel 113, it can flow relatively smoothly laterally to the guide portion 1161 under the guidance of the second guide surface 1163. It is understood that when the airflow enters the air guide cavity 116 from the first air intake channel 113 along the first direction, it contacts the bottom wall of the air guide cavity 116 and changes its flow direction. By setting the second guide surface 1163, it can play a guiding role at the connection between the air guide cavity 116 and the first air intake channel 113, so that the airflow flows more smoothly and gently to the guide section 1161.

[0092] Furthermore, in practical applications, the second guide surface 1163 can adopt the inclined plane structure shown in Figure 19. Of course, the second guide surface 1163 can also adopt the curved surface structure shown in Figure 20, or other structural forms can be adopted according to specific application requirements, which will not be elaborated here.

[0093] This application also provides an aerosol generation system, including an aerosol generation device and an aerosol article 40. The aerosol article 40 is installed inside the aerosol generation device, and the aerosol generation device can heat the aerosol article 40 to generate aerosol.

[0094] An aerosol generating device is a device capable of heating aerosol products to generate aerosols for users to inhale. Aerosol generating devices used with conventional heated non-combustible products with filters typically also include a heating chamber, where the user inserts the smoke-generating section of the heated non-combustible product into the heating chamber for heating, leaving the filter exposed. However, considering the high temperature of the heating chamber during heating, heat transfer from the heating chamber to the outside leads to low heat utilization and can cause the aerosol generating device to become too hot to handle or damage other parts within the device. Therefore, in some embodiments of this application, the heating assembly 10 includes a cup body 11 and a heating element 12. The cup body 11 has a central portion and an outer portion located outside the central portion. The central portion has a receiving cavity 111 and a heating cavity 112. The receiving cavity 111 is used to receive the aerosol product 40. The heating element 12 is disposed in the heating cavity 112 and is used to heat the airflow flowing into the heating cavity 112 into a hot airflow. The hot airflow is used to flow into the receiving cavity 111 to heat the aerosol product 40. The outer portion has multiple first air inlet channels 113 and multiple cooling cavities 114. Each first air inlet channel 113 is arranged circumferentially around the cup body 11, and at least one cooling cavity 114 is provided between every two adjacent first air inlet channels 113. The first air inlet channel 113 has an air inlet end 1131 and an air outlet end 1132. The air inlet end 1131 is located on the side of the receiving cavity 111 away from the heating cavity 112. One end of the heating cavity 112 is connected to the air outlet end 1132, and the other end is connected to the receiving cavity 111.

[0095] By providing a first air inlet channel 113 and a cooling chamber 114 outside the central accommodating cavity 111 and heating cavity 112, the heat transferred outward from the heating cavity 112 and accommodating cavity 111 can reach the first air inlet channel 113 to preheat the gas inside. The gas in the first air inlet channel 113 is heated into a hot airflow by the heating cavity 112 and finally flows into the accommodating cavity 111 to heat the aerosol product 40. Therefore, the heat transferred outward from the heating cavity 112 and accommodating cavity 111 can also be used to heat the aerosol product 40, thus improving the energy utilization rate of the heating assembly 10. Furthermore, providing a cooling chamber 114 outside the heating cavity 112 and accommodating cavity 111 can reduce the heat dissipated outward from the cup body 11, retaining the heat inside the heating assembly 10, preventing the aerosol generating device from becoming too hot to handle and preventing damage to other parts inside the aerosol generating device due to high temperatures.

[0096] When the aerosol generating device is in use, considering that if the aerosol article is inserted into the heating chamber and heated by contacting the aerosol article through the chamber wall or by inserting the heating device into the aerosol article, there may be a large temperature difference between different heating regions, resulting in uneven heating, which affects the heating effect of the aerosol article. Some embodiments of the aerosol generating device of the present application include a cup body 11, a heating element 12 and a mouthpiece 33. The cup body 11 has an opening 1111 and a closed end oppositely arranged in a first direction. The cup body 11 has an air guiding channel communicating with the opening 1111. A plurality of first air inlet channels 113 extending in the first direction are formed in the side wall of the cup body 11. The first air inlet channels 113 communicate the end surface of the opening 1111 with the air guiding channel. The heating element 12 is arranged in the air guiding channel. One end of the heating element 12 facing the opening 1111 and the cup body 11 define a receiving cavity 111 for placing the aerosol article 40. The heating element 12 has a heating channel 121 penetrating in the first direction. The heating channel 121 communicates with the first air inlet channel 113 and the receiving cavity 111. The heating element 12 is used for heating the gas flowing through the heating channel 121 to generate a hot air flow. The mouthpiece 33 has an open end and a suction port oppositely arranged and communicating in the first direction. The open end can be docked with the opening 1111 to communicate the air guiding channel with the suction port and communicate the first air inlet channel 113 with the external atmosphere.

[0097] By arranging the heating element 12 with a plurality of heating channels 121 in the cup body 11, the gas passing through the heating channels 121 is heated to form a hot air flow, and then the aerosol article 40 is heated through penetration, which can effectively balance the temperature difference in different regions, alleviate the problem of uneven heating, and is beneficial to improving the heating effect.

[0098] In the aerosol generating device配套 with the traditional heat-not-burn article with a filter tip, if the aerosol article is heated by high-temperature hot air, the heating element is located at the upstream end of the insertion hole of the aerosol article, so that the generated aerosol is sucked out from the filter tip of the aerosol article along with the air flow. Bottom air intake is usually adopted in the above device, and corresponding air inlet channels need to be arranged inside the device. When designing the structure, the space reservation of the air duct needs to be considered, which is not conducive to the internal structure design of the device. Moreover, the air flow needs to pass through the battery, control board, etc. inside the device before entering the position where the heating element is located, and impurity gas is easily mixed in the air flow movement process, which is likely to affect the taste of the aerosol.

[0099] Based on this, the heating assembly 10 in some embodiments of this application includes a cup body 11 and a heating element 12. The cup body 11 includes a bottom wall and a side wall, which form an air guiding channel. A first air inlet channel 113 is provided in the side wall, which connects the outside of the cup body 11 to the air guiding channel. The heating element 12 is disposed in the air guiding channel and has multiple heating channels 121 extending along the height direction of the cup body 11. The outer periphery of the heating element 12 is attached to the side wall, dividing the air guiding channel into a receiving cavity 111 and an air guiding cavity 116 located at the upper and lower ends of the heating element 12, respectively. The receiving cavity 111 is used to receive the aerosol product, and the air guiding cavity 116 connects the heating channel 121 and the first air inlet channel 113. The air guiding cavity 116 is provided with a flow guide 1161, which guides the air entering the air guiding cavity 116 from the first air inlet channel 113 to the bottom of the heating element 12.

[0100] By improving and optimizing the structure, air intake can be achieved through the first air intake channel 113 in the side wall of the cup body 11. When applied to an aerosol generating device, there is no need to set up an additional air intake channel in the main unit, which is beneficial to the overall structural design of the device. At the same time, it helps to reduce the possibility of impurity gases being mixed in during airflow. Moreover, the air entering the air guide cavity 116 from the first air intake channel 113 can be guided to the bottom of the heating element 12 through the guide part 1161 in the air guide cavity 116. This allows the airflow to pass through the heating channel 121 of the heating element 12 more evenly and be heated to form a hot airflow. This can effectively prevent airflow turbulence after airflow from different directions enters the air guide cavity 116. The airflow is more stable and smooth, which is beneficial to improving the user experience.

[0101] Considering that in aerosol generation devices using hot airflow heating, insufficient heating may occur, leading to waste of matrix material and insufficient heating making it difficult for users to obtain sufficient amounts of aerosol, some embodiments of this application include a heating assembly comprising a cup body 11, a heating element 12, and a gas collecting component 70. The cup body 11 has a receiving cavity 111 and a heating cavity 112. One end of the receiving cavity 111 has an opening 1111, and the heating cavity 112 is located at the other end of the receiving cavity 111. The opening 1111 is used to allow the aerosol product 40 to be loaded into the receiving cavity 111. The heating element 12 is located within the heating cavity 112 and is used to heat the gas within the heating cavity 112 to form a hot airflow, thereby heating the aerosol product 40 within the receiving cavity 111. The gas collecting component 70 is located within the heating cavity 112 and is positioned on the side of the heating element 12 facing the receiving cavity 111, used to increase the flow rate of the hot airflow after passing through the gas collecting component 70.

[0102] The heating component 10, by setting a gas collecting element 70 inside the cup body 11, can increase the flow rate of the hot air after passing through the gas collecting element 70. Therefore, the flow rate of the hot air in the internal cavity 111 per unit time is greater, so the overall heating efficiency of the hot air to the aerosol product is higher, resulting in more complete heating, better heating effect, and more aerosol production. This prevents waste of matrix material and meets the user's need to extract a large amount of aerosol in a short time.

Claims

1. A heating assembly, characterized in that, include: The cup body has a central portion and an outer portion located outside the central portion. The central portion has a receiving cavity and a heating cavity. The receiving cavity is used to contain an aerosol product. One end of the receiving cavity has an opening for the aerosol product to be loaded into the receiving cavity. And a heating element, which is disposed in the heating cavity, is used to heat the airflow flowing into the heating cavity into a hot airflow, which is used to flow into the accommodating cavity to heat the aerosol product; The outer portion is provided with a first air intake channel, which has an air intake end and an air outlet end. The air intake end is located on the side close to the opening, and the air outlet end is located on the side away from the opening. One end of the heating cavity is connected to the air outlet end, and the other end is connected to the receiving cavity.

2. The heating assembly according to claim 1, characterized in that, The outer portion is provided with multiple first air intake channels and multiple cooling chambers. Each first air intake channel is arranged at intervals along the circumference of the cup body, and at least one cooling chamber is provided between every two adjacent first air intake channels.

3. The heating assembly according to claim 2, characterized in that, The total contact area between the plurality of first air intake channels and the outer wall of the heating chamber is greater than the total contact area between the plurality of cooling chambers and the outer wall of the heating chamber; and / or, the contact area between each of the first air intake channels and the outer wall of the heating chamber is greater than the contact area between each of the cooling chambers and the outer wall of the heating chamber.

4. The heating assembly according to claim 2, characterized in that, The axial cross-sectional area of ​​each of the first air intake channels on the side adjacent to the central portion is greater than the axial cross-sectional area of ​​the first air intake channel on the side away from the central portion.

5. The heating assembly according to claim 4, characterized in that, The area of ​​the axial cross section of the first air intake channel gradually decreases from the side closer to the center portion to the side farther away from the center portion.

6. The heating assembly according to claim 2, characterized in that, The cooling cavity extends at least radially outward from the heating cavity.

7. The heating assembly according to any one of claims 2-6, characterized in that, A vacuum chamber is formed inside the cooling chamber; or, the cooling chamber is filled with heat-insulating filler, cooling medium or heat dissipation material.

8. The heating assembly according to claim 7, characterized in that, At least one of the cooling chambers is filled with aerogel or metal foil that has been bent and stacked multiple times.

9. The heating assembly according to any one of claims 2-6, characterized in that, The cup body is made of stainless steel, ceramic, copper, iron, nickel, copper-nickel alloy, iron-nickel alloy, or copper-zinc alloy; and / or, the inner wall of the cup body is provided with a heat insulation layer.

10. The heating assembly according to any one of claims 1-9, characterized in that, The heating assembly further includes a gas collecting component, which is disposed inside the heating cavity and on the side of the heating element facing the accommodating cavity. The gas collecting component has multiple gas collecting holes, and the diameter of the gas collecting holes on the side facing the heating element is larger than the diameter of the holes on the side away from the heating element.

11. The heating assembly according to claim 10, characterized in that, The diameter of each of the gas collecting holes varies linearly.

12. The heating assembly according to claim 10, characterized in that, The outer wall of the gas collecting component is closely attached to the inner wall of the heating chamber around its perimeter; and / or, a plurality of heating channels are provided through the heating body; each of the gas collecting holes is arranged opposite to and connected to the corresponding heating channel, and the heating channel is connected to the accommodating cavity through the corresponding gas collecting hole.

13. The heating assembly according to claim 10, characterized in that, The ratio of the diameter of the air collecting hole on the side away from the heating element to the diameter of the air collecting hole on the side facing the heating element is 1:5-1:2; and / or, the radial cross-section of the air collecting hole is circular, triangular or polygonal.

14. The heating assembly according to any one of claims 1-13, characterized in that, The heating element includes: A heat-conducting substrate, wherein multiple heating channels are formed on the heat-conducting substrate; The heating element has a mesh structure and is circumferentially wrapped around the outer wall of the heat-conducting substrate.

15. The heating assembly according to claim 14, characterized in that, The heating element includes: Positive and negative electrode lines are spaced apart along the axial direction of the heat-conducting substrate; A heating pattern is disposed between the positive electrode line and the negative electrode line, and one end of the heating pattern is connected to the positive electrode line in the axial direction of the heat-conducting substrate, and the other end is connected to the negative electrode line.

16. The heating assembly according to claim 15, characterized in that, The heating pattern includes multiple sets of heating structures arranged sequentially along the circumference of the heat-conducting substrate. Each set of heating structures is connected to the positive electrode line and the negative electrode line respectively, and each set of heating structures includes multiple heating units connected sequentially along the axial direction of the heat-conducting substrate.

17. The heating assembly according to claim 16, characterized in that, At least one set of the heating structures is arranged at circumferential intervals along the thermally conductive substrate.

18. The heating assembly according to claim 16, characterized in that, The heating pattern further includes: a connecting line located between at least two groups of adjacent heating structures, with the two ends of the connecting line respectively connected to the positive electrode line and the negative electrode line.

19. The heating assembly according to claim 16, characterized in that, Each of the heating units is a hollow closed pattern or an X-shaped pattern; and / or, the heating element is a flexible printed circuit heating structure; and / or, the plurality of heating channels are arranged in an array relative to the central axis of the heat-conducting substrate.

20. The heating assembly according to claim 14, characterized in that, The porosity of the heat-conducting substrate is 20% to 85%; or, the ratio of the total volume of the plurality of heating channels to the volume of the heat-conducting substrate is 1:5.5 to 1:1.

5.

21. The heating assembly according to any one of claims 1-20, characterized in that, The heating element is provided with multiple heating channels that communicate with the accommodating cavity. The heating element is attached to the cavity wall of the heating cavity on its outer periphery. The cup body is provided with an air guide cavity on the side of the heating element away from the accommodating cavity. The air guide cavity communicates with the heating channels and the first air inlet channel. The air guide cavity is provided with a flow guide section, which is used to guide the air entering the air guide cavity from the first air inlet channel to the bottom of the heating element.

22. The heating assembly according to claim 21, characterized in that, The flow guide is connected to the cavity wall of the air guide chamber away from the heating element. The flow guide has a first flow guide surface, which is inclined toward the bottom center of the heating element.

23. The heating assembly according to claim 22, characterized in that, The first guide surface is a smooth curved surface structure; or, the first guide surface is an inclined planar structure.

24. The heating assembly according to claim 22, characterized in that, The flow guide portion is frustum-shaped; or, the first flow guide surface is a continuous structure extending circumferentially; or, the flow guide portion has multiple first flow guide surfaces arranged circumferentially.

25. The heating assembly according to claim 22, characterized in that, The flow guide is located on the center line of the heating element, and there is a first distance between the flow guide and the heating element in a first direction, the first direction being consistent with the axial direction of the cup body.

26. The heating assembly according to claim 25, characterized in that, The heating chamber has a support structure on its inner wall, and the periphery of the heating element is supported by the support structure; or, the radial dimension of the heating chamber gradually decreases in the direction close to the air guide cavity along the first direction, and the outer side wall of the heating element matches the shape of the inner side wall of the cup body to support the heating element.

27. The heating assembly according to any one of claims 21-26, characterized in that, The first air intake channel and the orthographic projection of the heating element are located inside the air guide cavity, and the periphery of the air guide cavity has a second guide surface connected to the first air intake channel.

28. An aerosol generating apparatus, characterized in that, Includes a suction nozzle and a heating assembly as described in any one of claims 1-27, wherein the suction nozzle is compatible with the cup body to cover the aerosol product within the receiving cavity.

Images