Aerosol-generating device, aerosol-generating method and aerosol-generating system

Abstract

This application relates to the field of novel tobacco product technology, and provides an aerosol generating device, aerosol generating method, and an aerosol generating system, including a heating tube assembly and a control module. The heating tube assembly has a first state as a heating element and a second state as a capacitance detection electrode. In the first state, the heating tube assembly can heat the product. In the second state, a capacitance detection area can be constructed on the heating tube assembly. By utilizing the difference in dielectric constant, the type of aerosol generated product, whether the insertion is in place, and the cleanliness status can be self-checked without the need for additional sensors. This provides an accurate basis for differentiated heating control and can also prompt users to clean in a timely manner. Without increasing hardware costs, it significantly improves equipment compatibility, reliability, and user experience.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to an aerosol generation apparatus, aerosol generation method and an aerosol generation system. Background Technology

[0002] With the strengthening of global tobacco control efforts and the improvement of health awareness, heated tobacco products (such as cigarettes) have gained tremendous market attention as alternatives to traditional cigarettes due to their "heat-not-burn" characteristics, which can significantly reduce the release of harmful substances while providing a taste close to that of real cigarettes.

[0003] Currently, heated tobacco products on the market have various structural designs, with the most significant difference lying in the structure of the tip (insertion end). One type is the plugged tobacco stick: a plug (usually made of cellulose acetate or cotton paper) is placed at the tip to prevent tobacco fragments from falling and e-liquid from leaking out; the tobacco segment is typically located in the middle to rear of the stick. The other type is the unplugged tobacco stick: the tip directly exposes the tobacco segment, or the tobacco segment is positioned further forward, allowing for a more direct airflow channel.

[0004] However, existing aerosol generators use fixed-area heating and are usually optimized for a single type of cigarette. This results in poor cigarette compatibility and a single heating mode. If a device designed for cigarettes without end caps (which typically heats the lower area) is used to heat cigarettes with end caps, the cotton end cap will be directly baked, producing a pungent burnt smell and harmful substances. Conversely, if a device designed for cigarettes with end caps is used to heat cigarettes without end caps, the hollow support tube may be baked or the tobacco may not be heated sufficiently, resulting in very little smoke. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides an aerosol generating apparatus, an aerosol generating method, and an aerosol generating system.

[0006] The first aspect of this application provides an aerosol generating apparatus, including a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for accommodating an aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The control module is configured to have a detection mode and a heating mode. In the detection mode, the heating tube assembly is controlled to switch to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. After the aerosol generation product is inserted into the heating cavity, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively, and the type of aerosol generation product is identified according to the relationship between the first capacitance value and the second capacitance value. In the heating mode, depending on the type of aerosol-generated product, the portion of the heating tube assembly corresponding to the first capacitance detection area and the portion of the heating tube assembly corresponding to the second capacitance detection area are selectively switched to the first state.

[0007] Optionally, the heating tube assembly includes at least a first heating tube, a second heating tube, and a third heating tube arranged longitudinally, with each heating tube connected in sequence and forming the heating cavity together; In the detection mode, the control module controls the first heating tube, the second heating tube, and the third heating tube to switch to the second state, so that the first heating tube and the second heating tube form two plates of the first capacitor detection area, and the second heating tube and the third heating tube form two plates of the second capacitor detection area. In the heating mode, the control module selectively controls at least one of the first heating element, the second heating element, and the third heating element to switch to the first state.

[0008] Optionally, adjacent heating tubes are connected by a connector, the connector including a sleeve, the sleeve being fitted over the outside of the heating tube, and an isolation portion extending circumferentially on the inner sidewall of the sleeve, the isolation portion being located between adjacent heating tubes to physically separate the adjacent heating tubes.

[0009] Optionally, one of the connector and the heating tube is provided with a boss, and the other is provided with a notch, and the boss and the notch are inserted and limited.

[0010] Optionally, the control module is further configured to: In the detection mode, when the first capacitance value is greater than the second capacitance value and the deviation between the two is within a first preset range, the output result is that the aerosol generating product has a plug and the plug is located within the second capacitance detection area; and when the first capacitance value is less than the second capacitance value and the deviation between the two is within a second preset range, the output result is that the aerosol generating product does not have a plug.

[0011] Optionally, the length between the far ends of the first heating tube and the second heating tube is less than or equal to the length of the aerosol forming matrix segment of the aerosol generating article, the length between the far ends of the second heating tube and the third heating tube is less than or equal to the length of the aerosol forming matrix segment of the aerosol generating article, and the length of the third heating tube is the same as the plug length of the aerosol generating article. The control module is also configured to: In the heating mode, when the first capacitance value is greater than the second capacitance value and the deviation between the two is within a first preset range, the first heating tube and the second heating tube are controlled to switch to the first state; and when the first capacitance value is less than the second capacitance value and the deviation between the two is within a second preset range, the second heating tube and the third heating tube are controlled to switch to the first state.

[0012] Optionally, the heating tube assembly has an insertion port and an insertion end that are disposed opposite to each other; The control module is also configured to: In the detection mode, the third capacitance value of the first capacitance detection area and the fourth capacitance value of the second capacitance detection area are obtained respectively before the aerosol generating product is inserted into the heating chamber. When the aerosol-generated product is inserted into the insertion port and the first capacitance value is greater than the third capacitance value and the deviation between the two is within a third preset range, the change in the second capacitance value exceeding the fourth capacitance value is obtained after a preset time period. When the change is within the fourth preset range, the control module outputs that the aerosol-generated product has reached the insertion end; when the change is outside the fourth preset range, the control module outputs that the aerosol-generated product has not reached the insertion end.

[0013] Optionally, the aerosol generating device further includes a prompting module for prompting the user to perform cleaning; The control module is also configured to: In the detection mode, when the aerosol generating product is not inserted into the heating chamber, the fifth capacitance value of the heating tube assembly in a clean state is obtained, and the sixth capacitance value of the heating tube assembly after a certain period of use is obtained. When the sixth capacitance value is greater than the fifth capacitance value and the deviation between the two is greater than a fifth preset range, the prompting module is controlled to issue a prompt to remind the user to clean.

[0014] Optionally, the aerosol generating device further includes a heat insulation pipe, which is sleeved on the outer periphery of the heating pipe assembly. The heat insulation pipe includes an inner wall, an outer wall, and a vacuum layer formed between the inner wall and the outer wall. The heat insulation pipe is grounded to form an electromagnetic shielding layer.

[0015] A second aspect of this application provides a method for generating an aerosol, comprising heating using an aerosol generating apparatus as described in any of the preceding claims, the aerosol generating method comprising: Insert the aerosol-generated product into the heating chamber; The control module is set to detection mode, and the heating tube assembly is switched to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. After the aerosol generation product is inserted into the heating cavity, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively, and the type of aerosol generation product is identified according to the relationship between the first capacitance value and the second capacitance value. The control module is set to heating mode, and according to the type of aerosol-generated product, the portion of the heating tube assembly corresponding to the first capacitance detection area and the portion of the heating tube assembly corresponding to the second capacitance detection area are selectively switched to the first state.

[0016] A third aspect of this application provides an aerosol generating apparatus, including a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for receiving an aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The heating tube assembly has an insertion port and an insertion end disposed opposite to each other. The control module is configured to have a detection mode, in which the heating tube assembly is controlled to switch to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. Before the aerosol-generated product is inserted into the heating chamber, the third capacitance value of the first capacitance detection area and the fourth capacitance value of the second capacitance detection area are obtained respectively. After the aerosol-generated product is inserted into the heating chamber, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively. When the aerosol-generated product is inserted into the insertion port and the first capacitance value is greater than the third capacitance value and the deviation between the two is within a third preset range, the change in the second capacitance value exceeding the fourth capacitance value is obtained after a preset time period. When the change is within the fourth preset range, the control module outputs that the aerosol-generated product has reached the insertion end; when the change is outside the fourth preset range, the control module outputs that the aerosol-generated product has not reached the insertion end.

[0017] The fourth aspect of this application provides an aerosol generating apparatus, including a heating tube assembly, a control module, and a prompting module. The heating tube assembly includes a heating chamber for accommodating an aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The control module is configured to have a detection mode. In the detection mode, the heating tube assembly is controlled to switch to the second state. When the aerosol generating product is not inserted into the heating chamber, the fifth capacitance value of the heating tube assembly in a clean state is obtained, and the sixth capacitance value of the heating tube assembly after a certain period of use is obtained. When the sixth capacitance value is greater than the fifth capacitance value and the deviation between the two is greater than a fifth preset range, the prompting module is controlled to issue a prompt to remind the user to clean.

[0018] The fifth aspect of this application provides an aerosol generation system, including an aerosol generation apparatus as described in any of the preceding claims.

[0019] The technical solution provided in this application has the following advantages compared with the prior art: The aerosol generating apparatus provided in this application includes a heating tube assembly and a control module. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The control module is configured to have a detection mode and a heating mode. In the detection mode, after the aerosol generating product is inserted into the heating chamber, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively. Since there is a significant difference between the dielectric constant of the aerosol forming matrix section and the dielectric constant of the plug of the aerosol generating product, different first capacitance values ​​and second capacitance values ​​will be generated when different sections of the aerosol generating product are located within the range of the first capacitance detection area or the second capacitance detection area with the same input excitation. The type of aerosol generating product can be identified based on the relationship between the magnitude of the first capacitance value and the second capacitance value. Then, in the heating mode, according to the type of aerosol generating product, the portion of the heating tube assembly corresponding to the first capacitance detection area and the portion of the heating tube assembly corresponding to the second capacitance detection area are selectively controlled to switch to the first state, that is, it can adapt to different types of aerosol generating products to heat different areas of the aerosol generating product. (1) By setting up a heating tube assembly and constructing two capacitance detection areas on the heating tube assembly, the difference in dielectric constant is used to identify whether the aerosol-generated product has a plug, thus providing an accurate basis for subsequent differentiated heating control. This effectively avoids the problem of burnt smell or insufficient smoke caused by the mismatch between the heating mode and the type of aerosol-generated product. The structure is simple and the response is rapid.

[0020] (2) By setting up a heating tube assembly with a first state and a second state, the heating tube assembly can be reused as a capacitance detection electrode. No additional sensor components are needed, and the type of aerosol-generated products (such as cigarettes) can be automatically identified without increasing hardware costs.

[0021] (3) Based on the dynamic waveform monitoring of capacitance values ​​in two capacitance detection zones, real-time error correction can be achieved to determine whether the aerosol-generated product is inserted in place, thus avoiding dry burning and abnormal taste caused by improper insertion and improving the user experience.

[0022] (4) Based on the detection of the capacitance reference value in the clean state, the automatic detection and cleaning prompts of oil and carbon deposits can realize the health management of the equipment throughout its entire life cycle and extend the service life of the equipment. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an aerosol generating apparatus according to an embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of an aerosol generating apparatus according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the first heating tube according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the first connector according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an aerosol-generating article inserted according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of an aerosol-generated article inserted according to another embodiment of this application; Figure 7This is a schematic diagram of the detection field of the first capacitance detection region according to an embodiment of this application; Figure 8 This is a schematic flowchart of an aerosol generation method according to an embodiment of this application.

[0026] In the diagram: 01, plug; 02, aerosol forming matrix section; 03, support section; 04, filter section; 10. First heating element; 20. Second heating element; 30. Third heating element; 11. Notch; 12. Insertion port; 13. Insertion end; 40. Connector; 41. Boss. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0029] The aerosol generation device, aerosol generation method, and aerosol generation system will be described in detail below through specific embodiments: Reference Figures 1 to 7 As shown, the first aspect of this application provides an aerosol generating apparatus, including a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for accommodating the aerosol generating article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode.

[0030] The control module is configured with a detection mode and a heating mode. In the detection mode, the heating tube assembly is switched to a second state to form a longitudinally arranged first capacitance detection area and a second capacitance detection area on the heating tube assembly. After the aerosol-generating product is inserted into the heating chamber, the first capacitance value C1 of the first capacitance detection area and the second capacitance value C2 of the second capacitance detection area are obtained respectively. The type of aerosol-generating product is identified based on the relationship between the first capacitance value C1 and the second capacitance value C2. That is, because there is a significant difference between the dielectric constant of the aerosol-forming matrix segment 02 and the dielectric constant of the plug 01 of the aerosol-generating product, different first capacitance values ​​C1 and second capacitance values ​​C2 will be generated when different segments of the aerosol-generating product are located within the range of the first capacitance detection area or the second capacitance detection area with the same input excitation. The type of aerosol-generating product can be identified based on the relationship between the first capacitance value C1 and the second capacitance value C2.

[0031] In heating mode, depending on the type of aerosol-generated product, the portion of the heating tube assembly corresponding to the first capacitor detection area and the portion of the heating tube assembly corresponding to the second capacitor detection area are selectively switched to the first state, which means that different areas of the aerosol-generated product can be heated according to different types of aerosol-generated products.

[0032] This application utilizes a heating tube assembly with two capacitance detection areas to identify whether an aerosol-generating product has a plug (01) by leveraging the difference in dielectric constant. This provides an accurate basis for subsequent differentiated heating control, effectively avoiding problems such as burnt taste or insufficient smoke caused by mismatch between heating mode and aerosol-generating product type. The structure is simple and the response is rapid. Furthermore, the heating tube assembly has a first state and a second state, meaning it can be reused as a capacitance detection electrode. This eliminates the need for additional sensors and achieves automatic identification of aerosol-generating product types (such as cigarettes) without increasing hardware costs.

[0033] In some embodiments, the heating tube assembly includes at least a first heating tube 10, a second heating tube 20, and a third heating tube 30 arranged longitudinally. The first heating tube 10, the second heating tube 20, and the third heating tube 30 are referenced... Figure 1 The heating tubes are arranged sequentially in the direction indicated by the middle arrow (i.e., longitudinally), and the interiors of each heating tube are connected in sequence to form a heating chamber for containing the aerosol-generated product.

[0034] In detection mode, the control module controls the first heating tube 10, the second heating tube 20, and the third heating tube 30 to switch to the second state, so that the first heating tube 10 and the second heating tube 20 form the two plates of the first capacitor detection area, and the second heating tube 20 and the third heating tube 30 form the two plates of the second capacitor detection area. Specifically, by changing the power supply connection method, the second heating tube 20, as a common electrode, can participate in the formation of the two capacitor detection areas.

[0035] Then, in the heating mode, depending on the type of aerosol-generated product, at least one of the first heating tube 10, the second heating tube 20, and the third heating tube 30 is selectively switched to the first state.

[0036] Among them, reference Figure 1 As shown, the longitudinal direction is the direction of insertion of the aerosol generating product, extending from the insertion port 12 to the insertion end 13. The first heating tube 10, the second heating tube 20 and the third heating tube 30 are all hollow cylindrical tubular structures and are coaxially arranged. Their inner diameter is adapted to the outer diameter of the aerosol generating product to be heated, so as to allow the aerosol generating product to be tightly inserted and ensure good heat conduction efficiency.

[0037] Specifically, the aerosol generating device includes a heating circuit and a detection circuit. The control module connects the heating circuit and disconnects the detection circuit to switch the heating tube to its first state; conversely, disconnecting the heating circuit and connecting the detection circuit switches it to its second state. To achieve independent heating control for each heating tube, each tube has its own independent power supply line, which can be individually connected to an independent switching element in the power supply circuit. This allows the control module to energize, de-energize, and adjust the power of each of the three components separately.

[0038] In this embodiment, the heating tubes are time-division multiplexed to integrate the first state as heating elements and the second state as capacitance detection electrodes. The control unit switches the working mode through a high-frequency switch array. In the detection mode, the heating circuit is disconnected, and the high-frequency excitation signal is connected to each heating tube. The heating tube is in the second state, which uses the heating tube as the electrode plate of the capacitance detection electrode. The dielectric constant of the medium in the heating cavity is detected by the edge electric field effect to obtain the capacitance value of the corresponding area. In the heating mode, the detection circuit is disconnected, the heating circuit is connected, and the corresponding heating tube is energized to heat up and achieve temperature control, i.e., the first state.

[0039] It should be noted that the "aerosol-generating articles" in this application include aerosol-forming matrices that can provide volatile components when heated, including but not limited to articles containing tobacco materials. For example, they may include one or more tobacco materials such as tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes, and may also include non-tobacco articles that do not contain any tobacco components (e.g., non-tobacco articles containing nicotine or non-tobacco articles without nicotine).

[0040] It should be noted that the capacitance detection principle relied upon in this application does not distinguish the specific chemical composition of the aerosol forming matrix segment 02, but only relies on the relative difference between the equivalent dielectric constant of the matrix segment and the equivalent dielectric constant of the plug 01. This difference is determined by the physical density, moisture content and ionic polarizability of the material, and is not directly related to whether it contains tobacco materials or nicotine. Therefore, any multi-segment aerosol generating product with a first segment (i.e., aerosol forming matrix segment 02) and a second segment (i.e., plug 01) that can be distinguished by dielectric constant along its length can be used as the object of this application, and the capacitance detection logic of this application can be used to identify the position of the plug 01.

[0041] In some embodiments, refer to Figure 1 and Figure 2 As shown, adjacent heating tubes are connected by connectors 40. Connectors 40 are clamped between two adjacent heating tubes in the longitudinal direction so as to physically and reliably separate the two adjacent heating tubes, prevent the tube walls of adjacent heating tubes from directly contacting each other and causing electrical short circuits, and at the same time isolate the heat transfer path.

[0042] In other words, during assembly, the first heating tube 10, a connector 40, the second heating tube 20, another connector 40, and the third heating tube 30 are arranged longitudinally in sequence and fixed in sequence to finally form an integrated component.

[0043] This design ensures the mechanical integrity and coaxiality of the multiple heating tubes while achieving reliable electrical isolation between them. It provides a solid hardware foundation for the independent heating control and capacitance detection of the first heating tube 10, the second heating tube 20, and the third heating tube 30. They do not interfere with each other during electrical measurements, avoiding the negative impact of leakage current on capacitance detection accuracy and significantly improving the safety and measurement stability of the device.

[0044] Specifically, the connector 40 includes a sleeve fitted over the outer side of the heating tube. An isolation portion extends circumferentially along the inner wall of the sleeve, located between adjacent heating tubes to physically separate them. Furthermore, the inner diameter of the sleeve is substantially the same as the inner diameter of each heating tube to ensure a smooth and continuous internal channel of the heating chamber, preventing step-like jamming during insertion of the aerosol-generating product.

[0045] In specific implementation, refer to Figure 3 and Figure 4 As shown, one of the connector 40 and the heating tube is provided with a boss 41, and the other is provided with a notch 11. The boss 41 and the notch 11 are inserted and limited. During the assembly process, the operator aligns the boss 41 with the notch 11 and pushes it longitudinally so that the boss 41 is fully embedded in the notch 11, forming a tenon-and-mortise type insertion fit. This can achieve a triple limiting function at the same time, namely, axial (i.e., longitudinal) limiting to prevent the connector 40 from moving, radial limiting to ensure that the center of each heating tube is centered, and circumferential limiting to prevent relative rotation between the connector 40 and the heating tube, thus avoiding the internal wiring from being twisted and broken.

[0046] The connector 40 has a boss 41 or a notch 11 on both sides along the longitudinal direction to simultaneously achieve insertion and positioning with the heating tube on the corresponding side. This design enables foolproof, rapid and accurate positioning of the components, which not only greatly reduces the assembly difficulty and production defect rate, but also enhances the creep resistance and long-term structural stability of the heating tube assembly under the action of frequent insertion and removal of aerosol products and high temperature alternating stress, ensuring a high degree of consistency between the capacitor detection position and the actual physical partition.

[0047] It should be noted that the boss and notch are set to have a unique matching circumferential distribution pattern. For example, if an asymmetrical angle arrangement is adopted or only a single one is set, it can ensure that the operator will not reverse or rotate the connector 40 during assembly. This ensures that the boundary position of the first capacitor detection area and the second capacitor detection area corresponds precisely to the preset standard position of the aerosol forming matrix section 02 and the plug 01 of the aerosol generating product. This provides a mechanical positional certainty guarantee for the subsequent control module to perform interval positioning based on the capacitance value.

[0048] In some embodiments, the heating tube assembly is made of conductive metal. Preferably, the first heating tube 10, the second heating tube 20, and the third heating tube 30 can be seamless stainless steel tubes, or the heating tube assembly is made of ceramic with a conductive heating paste printed on its surface to allow for electrical conductivity and heat generation. The connector 40 needs to have extremely high volume resistivity to ensure no short circuit during capacitance detection and low thermal conductivity, and can be made of polyetheretherketone (PEEK) or high-performance ceramics with excellent electrical insulation and temperature resistance.

[0049] This configuration ensures that the heating tube has high resistivity, high heating efficiency and excellent oxidation resistance, while also ensuring that the connector 40 has stable electrical insulation and dimensional stability under high-temperature conditions, thereby comprehensively improving the thermal performance, electrical safety and service life of the entire aerosol generation device.

[0050] In some embodiments, the control module is further configured to: in detection mode, when the first capacitance value is greater than the second capacitance value and the deviation between the two is within a first preset range, output that the aerosol generating article has a plug 01 and the plug 01 is located within the second capacitance detection area; and when the first capacitance value is less than the second capacitance value and the deviation between the two is within a second preset range, output that the aerosol generating article does not have a plug 01.

[0051] It should be noted that the aerosol forming matrix section 02 of the aerosol generating product contains moisture and glycerol, and its relative dielectric constant is relatively high, ranging from about 40 to 80; while the plug 01 is generally made of filter cotton / cellulose acetate, support section 03 or air, and its dielectric constant is extremely low, ranging from about 1 to 3. That is, the dielectric constant of the aerosol forming matrix section 02 is greater than that of the plug 01. Therefore, after the first capacitance detection area and the second capacitance detection area are energized, the capacitance value of the area where the aerosol forming matrix section 02 is located is greater than the capacitance value of the area where the plug 01 is located.

[0052] In other words, when the first capacitance value C1 is greater than the second capacitance value C2 and the deviation between the two is within a first preset range, it can be determined that the aerosol generating product has a plug 01 and that the plug 01 is located within the second capacitance detection area, i.e., the plug 01 is within the coverage area of ​​the second heating tube 20 and the third heating tube 30. To prevent the plug 01 from burning, at least the first heating tube 10 can be energized for heating. When the first capacitance value C1 is less than the second capacitance value C2 and the deviation between the two is within a second preset range, it can be determined that the aerosol generating product does not have a plug 01, i.e., the aerosol forming matrix segment 02 can be directly inserted into the coverage area of ​​the second heating tube 20 and the third heating tube 30. At least the second heating tube 20 and the third heating tube 30 can be energized for heating. That is to say, the control module can identify the specific location of the plug 01, and then specifically determine and heat the location of the aerosol forming matrix segment 02.

[0053] In some embodiments, refer to Figure 5 and Figure 6 As shown, the length between the far ends of the first heating tube 10 and the second heating tube 20 (i.e., the total length of the first heating tube 10, a connector 40, and the second heating tube 20) is less than or equal to the length of the aerosol forming matrix segment 02 of the aerosol generating article. The length between the far ends of the second heating tube 20 and the third heating tube 30 (i.e., the total length of the second heating tube 20, another connector 40, and the third heating tube 30) is less than or equal to the length of the aerosol forming matrix segment 02 of the aerosol generating article. The length of the third heating tube 30 is the same as the length of the plug 01 of the aerosol generating article. In other words, when the aerosol-forming matrix section 02 of the aerosol-generating product with plug 01 and plug 01 are fully inserted into the heating chamber, plug 01 falls exactly within the coverage area of ​​the third heating tube 30, while the aerosol-forming matrix section 02 falls exactly within the coverage area of ​​the first heating tube 10, a connector 40, and the second heating tube 20. At this time, only the first heating tube 10 and the second heating tube 20 are heated, which can selectively heat the aerosol-forming matrix section 02, while the support section 03 and the filter section 04 are located outside the heating tube assembly. When the entire aerosol-generating product without plug 01 is made of tobacco material and inserted into the heating chamber, its aerosol-forming matrix section 02 falls exactly within the coverage area of ​​the second heating tube 20, another connector 40, and the third heating tube 30, while at least a portion of the support section 03 falls within the coverage area of ​​the first heating tube 10, and the remaining portion and the filter section 04 are located outside the heating tube assembly.

[0054] It is understood that the length between the farthest ends of the first heating tube 10 and the second heating tube 20 is equal to the length of the aerosol-forming matrix segment 02 of the aerosol-generating product, and the length between the farthest ends of the second heating tube 20 and the third heating tube 30 is equal to the length of the aerosol-forming matrix segment 02 of the aerosol-generating product. The length of the heated area is exactly matched with the length of the aerosol-forming matrix segment 02, which ensures complete heating. The length between the farthest ends of the first heating tube 10 and the second heating tube 20 is less than the length of the aerosol-forming matrix segment 02 of the aerosol-generating product, and the length between the farthest ends of the second heating tube 20 and the third heating tube 30 is less than the length of the aerosol-forming matrix segment 02 of the aerosol-generating product. The length of the aerosol forming matrix section 02 can be increased by extending the aerosol forming matrix section 02 beyond the heating tube used as a heating element in the first state. That is, when the aerosol forming product has a plug 01, the aerosol forming matrix section 02 is located in the area corresponding to the first heating tube 10 and the second heating tube 20, and can extend beyond the first heating tube 10, the extended part is not heated; or, when the aerosol forming product does not have a plug 01, the aerosol forming matrix section 02 is located in the area corresponding to the second heating tube 20 and the third heating tube 30, and can extend beyond the second heating tube 20, the extended part is not heated. By adding a non-heating zone, the generation of condensate can be prevented.

[0055] At this time, regardless of the heating method, the connector 40 between the first heating tube 10 and the second heating tube 20 has a high thermal barrier function, which can effectively block heat from being conducted to the first heating tube 10, prevent the support section 03 or filter section 04 that do not need to be heated from being baked, and achieve precise zoned temperature control.

[0056] The control module is also configured to: in heating mode, when the first capacitance value C1 is greater than the second capacitance value C2 and the deviation between the two is within a first preset range, i.e., when the aerosol product with plug 01 is identified, control the first heating tube 10 and the second heating tube 20 to be energized and heated, while the heating circuit of the third heating tube 30 remains disconnected and does not generate heat; and when the first capacitance value C1 is less than the second capacitance value C2 and the deviation between the two is within a second preset range, i.e., when the aerosol product without plug 01 is identified, control the second heating tube 20 and the third heating tube 30 to be heated, while the heating circuit of the first heating tube 10 remains disconnected.

[0057] This application matches the physical length of each heating tube with the length of the aerosol forming matrix section 02 and the plug 01 of the aerosol generating product, and adaptively switches the heating area based on the output of the control module in the detection mode. This ensures that no matter what type of aerosol generating product the user inserts, the heat can accurately cover the aerosol forming matrix section 02, while avoiding the plug 01 or the support section 03 area. This avoids the generation of burnt smell and harmful substances, and ensures a constant and sufficient amount of smoke.

[0058] It should be noted that in this application, the "deviation" between the first capacitance value C1 and the second capacitance value C2 refers to the difference between the first capacitance value and the second capacitance value, C1-C2; in other embodiments, the "deviation" may refer to the percentage obtained by dividing the difference by the second capacitance value. Specifically, when the system detects that the aerosol-generated article is fully inserted (as confirmed by the dynamic tracking of the insertion depth of the aerosol-generated article below), it enters the identification stage. The control module reads the stable values ​​of the first capacitance value C1 and the second capacitance value C2 respectively, and at this time, the deviation is calculated.

[0059] When the first capacitance value C1 is significantly greater than the second capacitance value C2, for example, C1 > 1.5 C2, meaning the deviation between C1 and C2 is greater than 0.5 times C2, the upper medium is tobacco, i.e., aerosol forming matrix section 02, and the lower part is air or cotton. At this time, it is determined to be "aerosol generating product with plug 01" or aerosol forming matrix section 02 is above the middle type. The control module connects the power supply of the first heating tube 10 and the second heating tube 20, and keeps the third heating tube 30 closed. This can prevent the third heating tube 30 from burning the bottom plug 01, and prevent the generation of burnt smell and harmful substances.

[0060] When the second capacitance value C2 is significantly greater than the first capacitance value C1, the aerosol forming matrix section 02 of the aerosol-generated product is filled more deeply, that is, the lower medium is tobacco and the upper part is a low dielectric material, i.e., the support section 03 or the filter section 04. At this time, it is determined to be an "aerosol-generated product without a plug 01" or a type where the aerosol forming matrix section 02 is lower. The control module connects the power supply of the second heating tube 20 and the third heating tube 30, and keeps the first heating tube 10 closed, which can ensure that the heat is concentrated in the core area of ​​the tobacco and avoid baking the upper filter paper.

[0061] In some embodiments, the heating tube assembly has an insertion port 12 and an insertion end 13 disposed opposite to each other. Specifically, the end of the first heating tube 10 away from the second heating tube 20 is formed as the insertion port 12, allowing the user to smoothly insert the aerosol-generating article into the heating chamber. The end of the third heating tube 30 away from the first heating tube 10 is formed as the insertion end 13, which is the bottom of a closed or semi-closed heating chamber, used to limit the maximum insertion depth of the aerosol-generating article. That is, in the assembled state, the first heating tube 10 and the second heating tube 20 in the first capacitance detection area are closer to the insertion port 12, and the second heating tube 20 and the third heating tube 30 in the second capacitance detection area are closer to the insertion end 13. As the aerosol-generating article gradually extends from the insertion port 12, the front end of the aerosol-generating article will sequentially pass through the first capacitance detection area and the second capacitance detection area.

[0062] The control module is also configured to: in detection mode, acquire the third capacitance value C3 of the first capacitance detection area and the fourth capacitance value C4 of the second capacitance detection area before the aerosol-generating product is inserted into the heating chamber; and after a preset time period, acquire the change in the second capacitance value C2 exceeding the fourth capacitance value C4 when the aerosol-generating product is inserted into the insertion port 12 and the first capacitance value C1 is greater than the third capacitance value C3 and the deviation between the two is within a third preset range. That is, the first capacitance value C1 exceeds the third capacitance value C3 and the deviation exceeds the third preset range, for example, C1 > 1.5. If the deviation between C1 and C3 is greater than 0.5 times C3, it is determined that the front end of the aerosol generating product has entered the first capacitance detection zone. At this time, the timer inside the control module is immediately started to start timing for a preset time period. After the timing ends, the control module immediately reads the current second capacitance value C2 in the second capacitance detection zone and calculates its change relative to the fourth capacitance value C4.

[0063] When the change is within the fourth preset range, the control module outputs that the aerosol-generated product has reached the insertion end 13. When the change is outside the fourth preset range, the control module outputs that the aerosol-generated product has not reached the insertion end 13. That is, if the change is within the fourth preset range, it means that the front end of the aerosol-generated product has entered the second capacitor detection area and reached the bottom, and the control module outputs a position signal, that is, the aerosol-generated product has reached the insertion end 13. If the change is outside the fourth preset range, specifically, it means that the fourth preset range has not been reached, it means that the medium in the second capacitor detection area is still mainly air, and the front end of the aerosol-generated product has not yet reached the insertion end 13, that is, the insertion depth is insufficient, that is, the aerosol-generated product has not reached the insertion end 13.

[0064] Based on the detection of capacitance values ​​at different times, it is possible to dynamically track the insertion depth of aerosol-generated products and confirm whether they are in place. This can effectively prevent the heating tube from drying out due to shallow insertion, significantly improve the uniformity and safety of heating, and provide users with immediate feedback on whether the insertion is qualified.

[0065] In practice, the heating mode is not activated. At this time, the third capacitance value C3 is monitored. When the user inserts the aerosol generator, the tip of the aerosol generator first enters the upper region, i.e., the first heating tube 10, causing a sudden increase in the third capacitance value C3 until the sudden increase in the first capacitance value C1 is significantly greater than the third preset range, i.e., the air reference value ± threshold. At this point, the timer is started. Under normal circumstances, the user's insertion action is continuous, and the time from when the aerosol generator contacts the first heating tube 10 to when it reaches the bottom of the third heating tube 30 is typically between 0.5 and 2 seconds. After the timer starts, the control module continuously monitors the change in the bottom capacitance.

[0066] If, within 3 seconds, the second capacitance value C2 also increases significantly, meaning the sudden change in the fourth capacitance value C4 relative to the second capacitance value C2 is significantly greater than the fourth preset range, it indicates that the aerosol generating product has been fully inserted. The system will then issue a "vibrate once" feedback, indicating "ready." If the timer expires for more than 3 seconds, a certain degree of sticking is allowed when inserting the aerosol generating product. If the first capacitance value C1 remains high, it indicates that an aerosol generating product is in insertion port 12, but the second capacitance value C2 is still close to the air reference value, it indicates that the bottom is empty. This indicates that the aerosol generating product is stuck in the middle and not fully inserted. The control module will drive the motor to output continuous rapid vibrations, or prompt the user to "continue pushing down forcefully"; at the same time, heating will be prohibited until the second capacitance value C2 increases.

[0067] In some embodiments, the aerosol generating device further includes a prompting module for prompting the user to perform cleaning. The prompting module may be a multi-color LED indicator mounted on the surface of the aerosol generating device housing, a miniature piezoelectric buzzer, or an OLED screen with integrated text display function.

[0068] The control module is also configured to: in detection mode, when the aerosol-generating product is not inserted into the heating chamber, acquire the fifth capacitance value C5 of the heating tube assembly in a clean state, and acquire the sixth capacitance value C6 of the heating tube assembly after a certain period of use. Here, "clean state" refers to the relatively clean state of the heating chamber when the aerosol-generating device is first manufactured or after manual cleaning by the user.

[0069] At this time, under no-load conditions (i.e., when the aerosol generating product is not inserted into the heating chamber and is at room temperature), the control module detects the fifth capacitance value C5 of the capacitor detection area where the first and second capacitor detection areas of the heating tube assembly can be connected in series as a whole, and writes this value as the "clean state reference value" into the non-volatile memory. As the number of times the aerosol generating device is used increases, tar and soot will gradually condense on the inner wall of the heating tube assembly. When the aerosol generating device has been used for a certain period of time, the trigger condition can be after heating a certain number of aerosol generating products, or after the cumulative heating time reaches a certain number of minutes and the device is currently in an no-load state, the control module automatically re-detects the current sixth capacitance value C6 of the heating tube assembly.

[0070] When the sixth capacitance value C6 is greater than the fifth capacitance value C5, and the deviation between the two exceeds the fifth preset range, the control prompt module issues a prompt to remind the user to clean. Specifically, the deviation between the sixth capacitance value C6 and the fifth capacitance value C5 is compared. When the sixth capacitance value C6 is greater than the fifth capacitance value C5, and the deviation exceeds the fifth preset range, it indicates that the accumulation of residue has reached a level that significantly affects the dielectric constant and heating efficiency. At this time, the control module sends a signal to the prompt module, such as driving the LED to flash red, driving the buzzer to emit an intermittent "beep" sound, or driving the screen to display the words "Please clean the heating chamber in time," to remind the user to perform cleaning operations. Through quantitative assessment and automatic early warning of the degree of dirt in the heating chamber, the system guides the user to perform timely maintenance, effectively avoiding problems such as decreased heating efficiency, odor generation, and bacterial growth caused by long-term scale buildup.

[0071] In practice, a variable `Ref_Cap`, which is the clean state baseline value and also the fifth capacitance value C5, is first stored in the memory. The factory default value is `Factory_Cap`. Each time the aerosol generating device is turned on or woken up, after confirming that no aerosol generating product has been inserted and that there are no significant changes in the first capacitance value C1 and the second capacitance value C2, the current measured capacitance value, which is the sixth capacitance value C6 `Current_Cap`, is read. Then, the drift amount ΔC2 = Current_Cap - Ref_Cap is calculated.

[0072] If `Current_Cap` is less than `Ref_Cap`, it indicates that the user may have just cleaned the device, or that environmental changes have caused a change in the capacitance value. In this case, `Ref_Cap = Current_Cap` is updated to achieve self-calibration of the reference value. If the drift amount ΔC2 is within the allowable range, it is considered normal dirt, and cleaning can be delayed. If the drift amount ΔC2 exceeds the preset cleaning threshold, i.e., the fifth preset range, it indicates that the oil accumulation has seriously affected the insulation performance or capacitance detection accuracy. In this case, the user can clean the device with an alcohol swab while it is powered off or charging. The above self-calibration function can avoid false alarms due to changes in environmental humidity or manual cleaning, thus improving detection accuracy.

[0073] In some embodiments, the aerosol generating apparatus further includes a heat-insulating tube, which is sleeved around the outer periphery of the heating tube assembly. The heat-insulating tube includes an inner wall, an outer wall, and a vacuum layer formed between the inner wall and the outer wall. Understandably, in operation, a large amount of heat generated by the heating tube assembly is transferred to the inner wall via radiation and convection. Since there are almost no air molecules in the vacuum layer, the heat conduction and convection paths are effectively blocked, and only a very small amount of radiative heat transfer exists. Therefore, most of the heat is retained around the heating tube assembly, significantly reducing the heat loss to the outer casing, thereby ensuring the heating efficiency of the aerosol-generated product.

[0074] The insulation pipe is grounded to form an electromagnetic shielding layer. In other words, the outer and inner walls can form an equipotential body. According to the principle of electromagnetic shielding, when the high-frequency alternating current on the heating pipe assembly is used for heating or when electromagnetic waves generated by capacitor detection are radiated outward, they cannot penetrate to the outside of the device, thus effectively suppressing electromagnetic interference.

[0075] Reference Figure 8 As shown, a second aspect of this application provides an aerosol generation method, which uses an aerosol generation apparatus as described in any of the above embodiments for heating. The aerosol generation method includes: S1. Insert the aerosol-generating product into the heating chamber. Once the aerosol-generating product is inserted into the heating chamber, the control module activates the detection mode, while the heating mode is deactivated. Specifically, the heating circuit can be disconnected via a high-frequency switch. By injecting a high-frequency excitation signal into the heating tube assembly, a first and second capacitor detection area can be formed longitudinally on the heating tube assembly. Specifically, capacitance can be generated between the first heating tube 10 and the second heating tube 20, and between the second heating tube 20 and the third heating tube 30.

[0076] S2. Set the control module to detection mode and control the heating tube assembly to switch to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. After the aerosol-generated product is inserted into the heating chamber, the first capacitance value C1 of the first capacitance detection area and the second capacitance value C2 of the second capacitance detection area are obtained respectively, and the type of aerosol-generated product is identified according to the relationship between the first capacitance value C1 and the second capacitance value C2. Specifically, when the first capacitance value C1 is greater than the second capacitance value C2 and the deviation between the two is within a first preset range, it can be determined that the aerosol generating product has a plug 01 and the plug 01 is located within the second capacitance detection area, that is, the plug 01 is located within the portion of the heating tube assembly corresponding to the first capacitance detection area, that is, within the coverage area of ​​the second heating tube 20 and the third heating tube 30; when the first capacitance value C1 is less than the second capacitance value C2 and the deviation between the two is within a second preset range, it can be determined that the aerosol generating product does not have a plug 01, and the aerosol forming matrix segment 02 can be directly inserted into the portion of the heating tube assembly corresponding to the second capacitance detection area, that is, within the coverage area of ​​the second heating tube 20 and the third heating tube 30.

[0077] S3. Set the control module to heating mode. Based on the type of aerosol-generating product, selectively control the portion of the heating tube assembly corresponding to the first capacitor detection area and the portion corresponding to the second capacitor detection area to switch to the first state. Specifically, selectively control at least one of the first heating tube 10, the second heating tube 20, and the third heating tube 30 to switch to the first state. Specifically, if the aerosol-generating product has a plug 01, the control module will at least not apply a conduction signal to the third heating tube 30, meaning the third heating tube 30 will not generate heat. In this case, depending on the specific length of the plug 01, the first heating tube 10 can be selectively activated, or either the first heating tube 10 or the second heating tube 20 can be activated to generate heat and heat the aerosol-generating product. If the aerosol-generating product does not have a plug 01, the control module will activate both the second heating tube 20 and the third heating tube 30, causing both to heat simultaneously. This allows for automatic output of the corresponding heating scheme based on the actual type of the aerosol-generating product, preventing users from selecting the wrong mode and reducing the release of harmful substances while ensuring good taste.

[0078] A third aspect of this application provides another aerosol generating apparatus, including a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for containing the aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. Specifically, the heating tube assembly includes at least a first heating tube 10, a second heating tube 20, and a third heating tube 30 arranged sequentially along a longitudinal direction. The interiors of each heating tube are sequentially connected and together form the heating chamber.

[0079] The heating tube assembly has an insertion port 12 and an insertion end 13 arranged opposite to each other. That is, the end of the first heating tube 10 away from the second heating tube 20 is formed as the insertion port 12, and the end of the third heating tube 30 away from the first heating tube 10 is formed as the insertion end 13.

[0080] The control module is configured to have a detection mode. In the detection mode, the heating tube assembly is switched to a second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. Before the aerosol generating product is inserted into the heating chamber, the third capacitance value of the first capacitance detection area and the fourth capacitance value of the second capacitance detection area are obtained respectively. After the aerosol generating product is inserted into the heating chamber, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively. When the aerosol generating product is inserted into the insertion port 12 and the first capacitance value is greater than the third capacitance value and the deviation between the two is within a third preset range, the change in the second capacitance value exceeding the fourth capacitance value is obtained after a preset time period. When the change is within the fourth preset range, the control module outputs that the aerosol generating product has reached the insertion end 13. When the change is outside the fourth preset range, the control module outputs that the aerosol generating product has not reached the insertion end 13.

[0081] This setup, based on dynamic waveform monitoring of capacitance values ​​in two capacitance detection zones, enables real-time error correction to determine whether the aerosol-generated product is inserted correctly, preventing dry burning and abnormal taste caused by incomplete insertion, thus improving the user experience.

[0082] The fourth aspect of this application provides yet another aerosol generating apparatus, including a heating tube assembly, a control module, and a prompting module. The heating tube assembly includes a heating chamber for containing an aerosol-generated article, and the heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode.

[0083] The control module is configured to have a detection mode. In the detection mode, the control heating tube assembly is switched to the second state. When the aerosol generated product is not inserted into the heating chamber, the fifth capacitance value of the heating tube assembly in a clean state is obtained, and the sixth capacitance value of the heating tube assembly after a certain period of use is obtained. When the sixth capacitance value is greater than the fifth capacitance value and the deviation between the two is greater than the fifth preset range, the control prompt module issues a prompt to remind the user to clean.

[0084] With this setup, based on the capacitance benchmark value detection in a clean state, and through automatic detection and cleaning prompts for oil and carbon buildup, full life-cycle health management of the equipment can be achieved, extending the equipment's service life.

[0085] The complete workflow for this application is as follows: (1) Standby: Low power scan of the first capacitor value C1.

[0086] (2) Insertion detection of aerosol generated product: When the first capacitance value C1 increases, the timing is started, and the second capacitance value C2 is monitored at the same time. If the second capacitance value C2 does not increase, an alarm is triggered to indicate that the aerosol generated product has not been inserted to the bottom.

[0087] (3) Identification of aerosol generated product type: After the first capacitance value C1 and the second capacitance value C2 are both stable, compare the two. If the first capacitance value C1 is significantly greater than the second capacitance value C2, it is determined that the aerosol generated product has a plug 01. The first heating tube 10 and the second heating tube 20 are turned on to heat the aerosol generated product. If the second capacitance value C2 is significantly greater than the first capacitance value C1, it is determined that the aerosol generated product does not have a plug 01. The second heating tube 20 and the third heating tube 30 are turned on to heat the aerosol generated product.

[0088] (4) Heating process: PID temperature control is executed.

[0089] (5) End of maintenance: After the aerosol-generated product is removed, the system detects the drift of the clean state reference value and prompts for cleaning if necessary.

[0090] The fifth aspect of this application provides an aerosol generation system, including an aerosol generation apparatus as described in any of the above embodiments.

[0091] The aerosol generation system provided in this application includes the aerosol generation device of any of the above embodiments, and therefore has the beneficial effects of the aerosol generation device of any of the above embodiments, which will not be repeated here.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0093] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerosol generating device, characterized in that, The device includes a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for accommodating an aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The control module is configured to have a detection mode and a heating mode. In the detection mode, the heating tube assembly is controlled to switch to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. After the aerosol generation product is inserted into the heating cavity, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively, and the type of aerosol generation product is identified according to the relationship between the first capacitance value and the second capacitance value. In the heating mode, depending on the type of aerosol-generated product, the portion of the heating tube assembly corresponding to the first capacitance detection area and the portion of the heating tube assembly corresponding to the second capacitance detection area are selectively switched to the first state.

2. The aerosol generating apparatus according to claim 1, characterized in that, The heating tube assembly includes at least a first heating tube (10), a second heating tube (20) and a third heating tube (30) arranged longitudinally, and the interiors of each heating tube are sequentially connected and together form the heating cavity; In the detection mode, the control module controls the first heating tube (10), the second heating tube (20) and the third heating tube (30) to switch to the second state, so that the first heating tube (10) and the second heating tube (20) form the two plates of the first capacitor detection area, and the second heating tube (20) and the third heating tube (30) form the two plates of the second capacitor detection area; In the heating mode, the control module selectively controls at least one of the first heating tube (10), the second heating tube (20) and the third heating tube (30) to switch to the first state.

3. The aerosol generating apparatus according to claim 2, characterized in that, Adjacent heating tubes are connected by a connector (40), the connector (40) including a sleeve, the sleeve being fitted on the outside of the heating tube, and an isolation part extending circumferentially on the inner sidewall of the sleeve, the isolation part being located between adjacent heating tubes to physically separate the adjacent heating tubes.

4. The aerosol generating apparatus according to claim 3, characterized in that, One of the connector (40) and the heating tube is provided with a boss (41) and the other is provided with a notch (11), and the boss (41) and the notch (11) are inserted and limited.

5. The aerosol generating apparatus according to claim 2, characterized in that, The control module is also configured to: In the detection mode, when the first capacitance value is greater than the second capacitance value and the deviation between the two is within a first preset range, the output result is that the aerosol generating product has a plug (01) and the plug (01) is located in the second capacitance detection area; and when the first capacitance value is less than the second capacitance value and the deviation between the two is within a second preset range, the output result is that the aerosol generating product does not have a plug (01).

6. The aerosol generating apparatus according to claim 5, characterized in that, The length between the far ends of the first heating tube (10) and the second heating tube (20) is less than or equal to the length of the aerosol forming matrix segment (02) of the aerosol generating product, the length between the far ends of the second heating tube (20) and the third heating tube (30) is less than or equal to the length of the aerosol forming matrix segment (02) of the aerosol generating product, and the length of the third heating tube (30) is the same as the length of the plug (01) of the aerosol generating product; The control module is also configured to: In the heating mode, when the first capacitance value is greater than the second capacitance value and the deviation between the two is within a first preset range, the first heating tube (10) and the second heating tube (20) are controlled to switch to the first state, and when the first capacitance value is less than the second capacitance value and the deviation between the two is within a second preset range, the second heating tube (20) and the third heating tube (30) are controlled to switch to the first state.

7. The aerosol generating apparatus according to any one of claims 1 to 6, characterized in that, The heating tube assembly has an insertion port (12) and an insertion end (13) arranged opposite to each other; The control module is also configured to: In the detection mode, the third capacitance value of the first capacitance detection area and the fourth capacitance value of the second capacitance detection area are obtained respectively before the aerosol generation product is inserted into the heating chamber. When the aerosol-generated product is inserted into the insertion port (12) and the first capacitance value is greater than the third capacitance value and the deviation between the two is within a third preset range, the change in the second capacitance value exceeding the fourth capacitance value is obtained after a preset time period. When the change is within the fourth preset range, the control module outputs that the aerosol-generated product has reached the insertion end (13). When the change is outside the fourth preset range, the control module outputs that the aerosol-generated product has not reached the insertion end (13).

8. The aerosol generating apparatus according to any one of claims 1 to 6, characterized in that, The aerosol generating device also includes a prompting module to prompt the user to perform cleaning. The control module is also configured to: In the detection mode, when the aerosol generating product is not inserted into the heating chamber, the fifth capacitance value of the heating tube assembly in a clean state is obtained, and the sixth capacitance value of the heating tube assembly after a certain period of use is obtained. When the sixth capacitance value is greater than the fifth capacitance value and the deviation between the two is greater than a fifth preset range, the prompting module is controlled to issue a prompt to remind the user to clean.

9. The aerosol generating apparatus according to any one of claims 1 to 6, characterized in that, The aerosol generating device also includes a heat insulation tube, which is sleeved on the outer periphery of the heating tube assembly. The heat insulation tube includes an inner wall, an outer wall, and a vacuum layer formed between the inner wall and the outer wall. The heat insulation tube is grounded to form an electromagnetic shielding layer.

10. A method for generating aerosols, characterized in that, Heating is performed using the aerosol generating apparatus as described in any one of claims 1 to 9, wherein the aerosol generating method comprises: Insert the aerosol-generated product into the heating chamber; The control module is set to detection mode, and the heating tube assembly is switched to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. After the aerosol generation product is inserted into the heating cavity, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively, and the type of aerosol generation product is identified according to the relationship between the first capacitance value and the second capacitance value. The control module is set to heating mode, and according to the type of aerosol-generated product, the portion of the heating tube assembly corresponding to the first capacitance detection area and the portion of the heating tube assembly corresponding to the second capacitance detection area are selectively switched to the first state.

11. An aerosol generating device, characterized in that, The device includes a heating tube assembly and a control module. The heating tube assembly includes a heating chamber for accommodating an aerosol-generated article. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The heating tube assembly has an insertion port (12) and an insertion end (13) disposed opposite to each other. The control module is configured to have a detection mode, in which the heating tube assembly is controlled to switch to the second state to form a first capacitance detection area and a second capacitance detection area arranged longitudinally on the heating tube assembly. Before the aerosol-generated product is inserted into the heating chamber, the third capacitance value of the first capacitance detection area and the fourth capacitance value of the second capacitance detection area are obtained respectively. After the aerosol-generated product is inserted into the heating chamber, the first capacitance value of the first capacitance detection area and the second capacitance value of the second capacitance detection area are obtained respectively. When the aerosol-generated product is inserted into the insertion port (12) and the first capacitance value is greater than the third capacitance value and the deviation between the two is within a third preset range, the change in the second capacitance value exceeding the fourth capacitance value is obtained after a preset time period. When the change is within the fourth preset range, the control module outputs that the aerosol-generated product has reached the insertion end (13). When the change is outside the fourth preset range, the control module outputs that the aerosol-generated product has not reached the insertion end (13).

12. An aerosol generating device, characterized in that, The device includes a heating tube assembly, a control module, and a prompting module. The heating tube assembly includes a heating chamber for accommodating an aerosol-generated product. The heating tube assembly is configured to have a first state as a heating element and a second state as a capacitance detection electrode. The control module is configured to have a detection mode. In the detection mode, the heating tube assembly is controlled to switch to the second state. When the aerosol generating product is not inserted into the heating chamber, the fifth capacitance value of the heating tube assembly in a clean state is obtained, and the sixth capacitance value of the heating tube assembly after a certain period of use is obtained. When the sixth capacitance value is greater than the fifth capacitance value and the deviation between the two is greater than a fifth preset range, the prompting module is controlled to issue a prompt to remind the user to clean.

13. An aerosol generation system, characterized in that, Includes the aerosol generating apparatus as described in any one of claims 1 to 9, 11, and 12.

Images