Segmented-heating control method, segmented-heating controller and segmented-heating control device

Abstract

A segmented-heating control method, a segmented-heating controller and a segmented-heating control device, which belong to the technical field of heating control. In the present application, since an airflow is generated during the process of vaping of a consumer, an airflow sensor performs detection on an airflow which is generated by each puff and generates an airflow signal; and according to the airflow signal, which is received every time, segments of heating portion in a heating element are sequentially controlled in a preset sequence to heat an aerosol formation substrate that is placed in an accommodating cavity, such that segments of the aerosol formation substrate can be sequentially heated as a vaping time increases, and thus a substance in the aerosol formation substrate can be uniformly released, thereby effectively improving the sensory experience of the consumer.

Description

Segmented heating control method, controller and control device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 26, 2023, with application number 202310762651.3 and invention name “A segmented heating control method, controller and control device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the field of heating control technology, and in particular relates to a segmented heating control method, controller, and control device. Background Art

[0003] The low-temperature non-combustion aerosol generating device controls the heating element to heat the aerosol-forming substrate placed in the accommodating cavity so that the aerosol-forming substrate can produce an appropriate amount of aerosol for the user to inhale. Compared with the traditional directly ignited aerosol-forming substrate, the low-temperature non-combustion aerosol generating device heats the aerosol-forming substrate to produce an aerosol for the user to inhale while avoiding the temperature from being too high to produce or release volatile compounds that are harmful to the human body.

[0004] During the consumer's puffing process, the state of the aerosol-forming substrate of the existing low-temperature non-combustion aerosol generating device continuously changes with the increase of the puffing time, so that the substances in the aerosol-forming substrate cannot be released evenly, and the taste of the generated aerosol becomes inconsistent as the puffing time increases, resulting in a poor consumer experience.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide a segmented heating control method; the segmented heating control method provided in this application can heat each segment of the aerosol-forming substrate in sequence as the puffing time increases, thereby allowing the substance in the aerosol-forming substrate to be released evenly, effectively improving the consumer's sensory experience.

[0007] The technical solutions provided in this application are as follows:

[0008] A segmented heating control method is applied to an aerosol generating device, wherein the aerosol generating device includes a receiving chamber, a heating element, and an airflow sensor, wherein the heating element includes multiple sequentially connected heating sections. The method comprises:

[0009] S1. When a start signal is received, controlling the first heating portion of the heating element to heat the aerosol-forming substrate placed in the accommodating chamber;

[0010] S2. receiving an airflow signal sent by the airflow sensor, where the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity;

[0011] S3. When the airflow signal is greater than a preset signal, the heating portion of the heating element that is currently in the heating state is controlled to stop heating, and the next heating portion connected to the heating portion that is currently in the heating state is controlled to start heating;

[0012] S4. Repeat steps S2 to S3 until a stop signal is received, and control the heating element to stop heating.

[0013] The present application also provides a segmented heating controller, which is applied to an aerosol generating device. The aerosol generating device includes a receiving chamber, a heating element, and an airflow sensor. The heating element includes multiple heating sections connected in sequence. The segmented heating controller includes:

[0014] a first control module, configured to control the first heating portion of the heating element to heat the aerosol-forming substrate disposed in the accommodating chamber upon receiving a start signal;

[0015] a second control module, configured to receive an airflow signal sent by the airflow sensor, wherein the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity;

[0016] a third control module, configured to control the heating portion currently in the heating state in the heating element to stop heating when the airflow signal is greater than a preset signal, and control the next heating portion connected to the heating portion currently in the heating state to start heating;

[0017] The fourth control module is configured to control the heating element to stop heating when a stop signal is received.

[0018] The present application also provides a segmented heating control device, comprising the segmented heating controller and an aerosol generating device as described above; wherein the aerosol generating device comprises a receiving chamber, a heating element, and an airflow sensor; wherein the heating element comprises a plurality of sequentially connected heating sections; wherein:

[0019] The heating element is disposed in the accommodating cavity, and both ends of each heating section of the heating element are respectively connected to the segmented heating controller, and each heating section of the heating element is used to heat the aerosol-forming substrate placed in the accommodating cavity in sequence according to a preset order;

[0020] The airflow sensor is connected to the segmented heating controller and is used to collect the airflow in the accommodating cavity and output an airflow signal;

[0021] The segmented heating controller is configured to control the first segment heating portion of the heating element to heat the aerosol-forming substrate placed in the accommodating chamber when receiving a start signal;

[0022] The segmented heating controller is further configured to receive the airflow signal sent by the airflow sensor;

[0023] The segmented heating controller is further configured to control the heating portion currently in the heating state in the heating element to stop heating when the airflow signal is greater than a preset signal, and control the next segment of the heating portion connected to the heating portion currently in the heating state to start heating;

[0024] The segmented heating controller is further configured to control the heating element to stop heating when a stop signal is received.

[0025] Preferably, the heating element comprises 3-10 heating sections connected in sequence.

[0026] Preferably, the aerosol generating device is provided with a base, and the heating element is provided with a housing;

[0027] The multiple sections of the heating parts are all arranged in the shell;

[0028] The heating element is fixedly connected to the center position of the end of the base;

[0029] The first section heating portion is close to the base.

[0030] Preferably, the multiple sections of the heating parts are all metal wires.

[0031] Preferably, the heating element is a heating needle.

[0032] Preferably, the accommodating chamber includes a first accommodating chamber and a second accommodating chamber;

[0033] The second accommodating cavity is arranged outside the first accommodating cavity;

[0034] The heating element is arranged in the first accommodating cavity;

[0035] The airflow sensor is disposed in the second accommodating cavity.

[0036] Compared with the prior art, the present application provides a segmented heating control method, which is applied to an aerosol generating device. The aerosol generating device includes a accommodating chamber, a heating element and an airflow sensor. The heating element includes multiple heating parts connected in sequence. The method includes: S1. When a start signal is received, the first heating part of the heating element is controlled to heat the aerosol-forming substrate placed in the accommodating chamber; S2. The airflow signal sent by the airflow sensor is received. The airflow signal is the sensing signal output by the airflow sensor when collecting the airflow in the accommodating chamber; S3. When the airflow signal is greater than a preset signal, the heating part currently in the heating state in the heating element is controlled to stop heating, and the heating part currently in the heating state is controlled to stop heating. The next connected heating section starts heating; S4, repeat steps S2 to S3 until a stop signal is received, and the heating element is controlled to stop heating. In the present application, since consumers will generate airflow during the puffing process, the airflow generated by each puff is detected by the airflow sensor and an airflow signal is generated. According to the airflow signal received each time, one of the heating sections of the heating element is controlled in sequence in a preset order to heat the aerosol-forming substrate placed in the accommodating cavity, so that as the puffing time increases, each section of the aerosol-forming substrate can be heated in turn, thereby allowing the substance in the aerosol-forming substrate to be released evenly, effectively improving the consumer's sensory experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] FIG1 is a schematic flow chart of a segmented heating control method provided by the present application;

[0039] FIG2 is a schematic structural diagram of a segmented heating controller provided by the present application;

[0040] FIG3 is a first structural schematic diagram of a segmented heating control device provided by the present application;

[0041] FIG4 is a second structural schematic diagram of a segmented heating control device provided in this application. DETAILED DESCRIPTION

[0042] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0043] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0046] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0047] As shown in FIG1 , an embodiment of the present application provides a segmented heating control method, which is applied to an aerosol generating device. The aerosol generating device includes a receiving chamber, a heating element, and an airflow sensor. The heating element includes multiple sequentially connected heating sections. The method includes:

[0048] S1. When a start signal is received, controlling the first heating portion of the heating element to heat the aerosol-forming substrate placed in the accommodating cavity;

[0049] In this embodiment, the aerosol generating device can be provided with a switch button connected to the segmented heating controller. By pressing the switch button, the switch button generates a start signal and sends it to the segmented heating controller. After receiving the start signal, the segmented heating controller controls the first heating section of the heating element to heat the aerosol-forming substrate placed in the accommodating cavity. A detection sensor can also be provided. When the detection sensor detects that the aerosol-forming substrate is placed in the accommodating cavity, a start signal is sent to the segmented heating controller.

[0050] The aerosol-forming substrate may be a cigarette, and the aerosol-generating device may be a heated smoking device. This heating is preheating, and the first heating section of the heating element may be controlled to heat to a preset temperature value, or preheated according to a preset heating temperature curve.

[0051] S2. Receive an airflow signal sent by an airflow sensor, where the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity;

[0052] In this embodiment, after the first section of the heating element is controlled to complete heating, the consumer will be prompted to take a puff. The consumer will generate airflow during the puffing process. The airflow sensor collects the airflow generated by the puffing (such as the first puff, the second puff, etc.) in the accommodating cavity and outputs an airflow signal. The segmented heating controller receives the airflow signal sent by the airflow sensor.

[0053] S3. When the airflow signal is greater than the preset signal, the heating portion of the heating element that is currently in the heating state is controlled to stop heating, and the next heating portion connected to the heating portion that is currently in the heating state is controlled to start heating;

[0054] In this embodiment, the preset signal can be a zero signal. Considering that there will be a tiny signal in the air when no inhalation is done, the preset signal can also be a tiny signal. The preset signal is set to be smaller than the airflow signal generated by inhalation. After the consumer takes the first puff, the airflow sensor collects the airflow signal for the first time. The airflow signal generated by inhalation is greater than the preset signal. The airflow sensor sends an airflow signal greater than the preset signal to the segmented heating controller. After the segmented heating controller receives the airflow signal greater than the preset signal, it controls the heating part of the heating element that is currently in the heating state (such as the first heating part) to stop heating, and controls the next heating part (such as the second heating part) connected to the heating part that is currently in the heating state to start heating according to the preset heating temperature curve.

[0055] S4. Repeat steps S2 to S3 until a stop signal is received and the heating element is controlled to stop heating.

[0056] In this embodiment, after the consumer takes a second puff, the airflow sensor collects the airflow signal generated by the puff for the second time. The airflow signal generated by the puff is greater than the preset signal. The airflow sensor continues to send the airflow signal to the segmented heating controller. After the segmented heating controller receives the airflow signal of the preset signal, it controls the heating part of the heating element that is currently in the heating state (such as the second heating part) to stop heating, and controls the next heating part (such as the third heating part) connected to the heating part that is currently in the heating state to start heating according to the preset heating temperature curve. This cycle is repeated until the segmented heating controller receives a stop signal. The segmented heating controller controls the heating element to stop heating. The stop signal can be a signal generated by pressing the switch button again and sent to the segmented heating controller.

[0057] Compared with the prior art, the present application provides a segmented heating control method, which is applied to an aerosol generating device. The aerosol generating device includes a accommodating chamber, a heating element and an airflow sensor. The heating element includes multiple heating parts connected in sequence. The method includes: S1. When a start signal is received, the first heating part of the heating element is controlled to heat the aerosol-forming substrate placed in the accommodating chamber; S2. The airflow signal sent by the airflow sensor is received. The airflow signal is the sensing signal output by the airflow sensor when collecting the airflow in the accommodating chamber; S3. When the airflow signal is greater than a preset signal, the heating part currently in the heating state in the heating element is controlled to stop heating, and the heating part currently in the heating state is controlled to stop heating. The next connected heating section starts heating; S4, repeat steps S2 to S3 until a stop signal is received, and the heating element is controlled to stop heating. In the present application, since consumers will generate airflow during the puffing process, the airflow generated by each puff is detected by the airflow sensor and an airflow signal is generated. According to the airflow signal received each time, one of the heating sections of the heating element is controlled in sequence in a preset order to heat the aerosol-forming substrate placed in the accommodating cavity, so that as the puffing time increases, each section of the aerosol-forming substrate can be heated in turn, thereby allowing the substance in the aerosol-forming substrate to be released evenly, effectively improving the consumer's sensory experience.

[0058] As shown in FIG2 , the present application further provides a segmented heating controller 100 for use in an aerosol generating device. The aerosol generating device includes a receiving chamber, a heating element, and an airflow sensor. The heating element includes multiple sequentially connected heating sections. The segmented heating controller 100 includes:

[0059] The first control module 110 is configured to control the first heating portion of the heating element to heat the aerosol-forming substrate disposed in the accommodating chamber upon receiving a start signal;

[0060] The second control module 120 is configured to receive an airflow signal sent by the airflow sensor, where the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity;

[0061] The third control module 130 is configured to control the heating portion currently in the heating state in the heating element to stop heating when the airflow signal is greater than a preset signal, and control the next heating portion connected to the heating portion currently in the heating state to start heating;

[0062] The fourth control module 140 is configured to control the heating element to stop heating when a stop signal is received.

[0063] As shown in Figures 3 and 4 , the present application further provides a segmented heating control device, comprising the segmented heating controller 100 and an aerosol generating device 200 . The aerosol generating device 200 comprises a receiving chamber 210 , a heating element 220 , and an airflow sensor 230 . The heating element 220 comprises a plurality of sequentially connected heating sections 221 .

[0064] The heating element 220 is disposed within the accommodating chamber 210. Both ends of each heating portion 221 of the heating element 220 are connected to the segmented heating controller 100. The heating portions of the heating element 220 are configured to sequentially heat the aerosol-forming substrate disposed within the accommodating chamber 210 in a predetermined order.

[0065] The airflow sensor 230 is connected to the segmented heating controller 100 and is used to collect the airflow in the accommodating cavity 210 and output an airflow signal;

[0066] The segmented heating controller 100 is configured to control the first segment heating portion 2211 of the heating element 220 to heat the aerosol-forming substrate disposed in the accommodating chamber 210 upon receiving a start signal;

[0067] The segmented heating controller 100 is further configured to receive an airflow signal sent by the airflow sensor 230;

[0068] The segmented heating controller 100 is further configured to control the heating portion currently in the heating state in the heating element 220 to stop heating when the airflow signal is greater than a preset signal, and to control the next segment of the heating portion connected to the heating portion currently in the heating state to start heating;

[0069] The segmented heating controller 100 is further configured to control the heating element 220 to stop heating when a stop signal is received.

[0070] In this embodiment, a switch button can be provided on the aerosol generating device 200, and the switch button can be used to control the segmented heating controller 100 to start or stop heating. A detection sensor can also be provided on the aerosol generating device 200. When the detection sensor detects that the aerosol-forming substrate is placed in the receiving cavity, a start signal is sent to the segmented heating controller 100 to start heating control. The switch button and the detection sensor are not shown in the accompanying drawings.

[0071] In this embodiment, the segmented heating controller 100 controls one section of the heating element 220 to heat the aerosol-forming substrate placed in the accommodating cavity 210 in sequence according to the airflow signal generated by each puff, so that as the puffing time increases, each section of the aerosol-forming substrate can be heated in sequence, thereby allowing the substance in the aerosol-forming substrate to be evenly released, effectively improving the consumer's sensory experience.

[0072] As shown in Figure 4 , as an embodiment, in this embodiment of the present application, the heating element 220 includes 3-10 sequentially connected heating sections 221. In this embodiment, by configuring the heating section 221 of the heating element 220 to have 3-10 sections, each section of the aerosol-forming substrate can be heated more effectively, resulting in a more uniform and complete release of the substance in the aerosol-forming substrate, effectively improving the consumer's sensory experience.

[0073] Preferably, in an embodiment of the present application, the heating element 220 includes four heating sections 221 connected in sequence. Specifically, the heating element 220 includes a first heating section 2211, a second heating section 2212, a third heating section 2213, and a fourth heating section 2214; the first end of the first heating section 2211 is connected to the segmented heating controller 100; the second end of the first heating section 2211 is respectively connected to the first end of the second heating section 2212 and the segmented heating controller 100; the second end of the second heating section 2212 is respectively connected to the first end of the third heating section 2213 and the segmented heating controller 100; the second end of the third heating section 2213 is respectively connected to the first end of the fourth heating section 2214 and the segmented heating controller 100; the second end of the fourth heating section 2214 is connected to the segmented heating controller 100.

[0074] In this embodiment, after being turned on by the switch button control, the segmented heating controller 100 controls the first segment heating portion 2211 of the heating element 220 to preheat the aerosol-forming substrate placed in the accommodating chamber 210. After the consumer takes the first puff, the airflow sensor 230 collects the airflow signal greater than the preset signal generated by the puff for the first time, and sends the airflow signal greater than the preset signal to the segmented heating controller 100. After receiving the airflow signal greater than the preset signal, the segmented heating controller 100 controls the first segment heating portion 2211 to stop heating and controls the second segment heating portion 2211 to stop heating. The section 2212 starts to heat. After the consumer takes a second puff, the airflow sensor 230 collects an airflow signal greater than the preset signal due to the puffing for the second time, and sends the airflow signal greater than the preset signal to the segmented heating controller 100. After receiving the airflow signal greater than the preset signal, the segmented heating controller 100 controls the second-segment heating section 2212 to stop heating and controls the third-segment heating section 2213 to start heating. This cycle is repeated until the segmented heating controller 100 receives a stop signal and the segmented heating controller 100 controls the heating element 220 to stop heating.

[0075] In this embodiment, by setting the heating part of the heating element 220 to four sections, the heating effect of each section of the aerosol-forming substrate can be better, so that the substances in the aerosol-forming substrate are released more evenly and fully, effectively improving the sensory experience of consumers.

[0076] As shown in Figure 4, as an embodiment, in the embodiment of the present application, the aerosol generating device 200 is provided with a base 240, and the heating element 220 is provided with a shell 222; the multiple sections of heating parts 221 are all arranged in the shell 222; the heating element 220 and the base 240 are fixedly connected at the center position of the end; the first section of the heating part 2211 is close to the base 240.

[0077] In this embodiment, the shell 222 can be made of high-temperature resistant insulating ceramic material. By arranging the multiple heating sections 221 in the shell 222, it is convenient to connect each heating section and the controller, and each heating section can be effectively protected.

[0078] As an embodiment, in the embodiment of the present application, the multi-segment heating portion 221 is all made of metal wire. In this embodiment, the small diameter of the metal wire is convenient for being arranged in the housing 222, and convenient for being connected to the segmented heating controller 100 in a segmented connection manner.

[0079] As an embodiment, in the present embodiment, the heating element 220 is a heating needle. In this embodiment, when the aerosol-forming substrate is placed in the accommodating cavity 210, the heating needle can be smoothly inserted into the interior of the aerosol-forming substrate, resulting in a better heating effect.

[0080] As shown in FIG4 , as an embodiment, in the present embodiment, the accommodating chamber 210 includes a first accommodating chamber 211 and a second accommodating chamber 212. The second accommodating chamber 212 is disposed outside the first accommodating chamber 211. The heating element 220 is disposed within the first accommodating chamber 211. The airflow sensor 230 is disposed within the second accommodating chamber 212. In this embodiment, by disposing the airflow sensor 230 within the second accommodating chamber 212, the airflow signal generated by puffing can be effectively detected without affecting the insertion of the aerosol-forming substrate into the first accommodating chamber 211.

[0081] As shown in Figure 4, as an implementation manner, in the embodiment of the present application, a second accommodating chamber 212 can be provided on both sides of the first accommodating chamber 211, and one airflow sensor 230 can be provided, that is, an airflow sensor 230 is provided in one of the second accommodating chambers 212, or two airflow sensors 230 can be provided, that is, an airflow sensor 230 is provided in each of the second accommodating chambers 212 on both sides of the first accommodating chamber 211. Whether to provide one or two airflow sensors 230 can be set according to specific needs, as long as it can ensure that the airflow signal generated by suction is detected.

[0082] As shown in FIG. 4 , as an implementation manner, in the embodiment of the present application, the aerosol generating device 200 further includes a battery 250 ; the battery 250 is disposed in the base 240 and is used to power the segmented heating controller 100 .

[0083] It should be understood that the use of "system," "device," "unit," and / or "module" in this application is merely a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0084] The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0085] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A segmented heating control method, characterized in that: Applied to an aerosol generating device, the aerosol generating device comprises a containing chamber, a heating element and an airflow sensor, the heating element comprises a plurality of heating sections connected in sequence, the method comprises: S1. When receiving a start signal, controlling the first heating portion of the heating element to heat the aerosol-forming substrate placed in the accommodating cavity; S2, receiving an airflow signal sent by the airflow sensor, wherein the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity; S3, when the airflow signal is greater than a preset signal, controlling the heating part currently in the heating state in the heating element to stop heating, and controlling the next heating part connected to the heating part currently in the heating state to start heating; S4. Repeat steps S2 to S3 until a stop signal is received and the heating element is controlled to stop heating.

2. A segmented heating controller, characterized in that: Applied to an aerosol generating device, the aerosol generating device comprises a containing chamber, a heating element and an airflow sensor, the heating element comprises a plurality of heating parts connected in sequence, and the segmented heating controller comprises: a first control module, configured to control the first heating section of the heating element to heat the aerosol-forming substrate disposed in the accommodating cavity when receiving a start signal; A second control module, configured to receive an airflow signal sent by the airflow sensor, wherein the airflow signal is a sensing signal output by the airflow sensor when collecting airflow in the accommodating cavity; A third control module is used for controlling the heating part currently in the heating state in the heating element to stop heating when the airflow signal is greater than a preset signal, and controlling the next heating part connected to the heating part currently in the heating state to start heating; The fourth control module is used to control the heating element to stop heating when a stop signal is received.

3. A segmented heating control device, characterized in that: The invention comprises a segmented heating controller and an aerosol generating device as claimed in claim 2; wherein the aerosol generating device comprises a containing chamber, a heating element and an airflow sensor, and the heating element comprises a plurality of heating sections connected in sequence; wherein: The heating element is arranged in the accommodating cavity, and the two ends of each heating portion of the heating element The ends are respectively connected to the segmented heating controller, and the heating parts of the heating elements are used to heat the aerosol-forming substrate placed in the accommodating cavity in sequence according to a preset order; The airflow sensor is connected to the segmented heating controller and is used to collect the airflow in the accommodating cavity and output an airflow signal; The segmented heating controller is used to control the first segment heating portion of the heating element to heat the aerosol-forming substrate placed in the accommodating cavity when receiving a start signal; The segmented heating controller is further used to receive the airflow signal sent by the airflow sensor; The segmented heating controller is further used to control the heating part currently in the heating state in the heating element to stop heating when the airflow signal is greater than a preset signal, and control the next segment heating part connected to the heating part currently in the heating state to start heating; The segmented heating controller is also used to control the heating element to stop heating when a stop signal is received.

4. The segmented heating control device according to claim 3, characterized in that: The heating element comprises 3-10 heating sections which are connected in sequence.

5. The segmented heating control device according to claim 4, characterized in that: The aerosol generating device is provided with a base, and the heating element is provided with a housing; The multiple sections of the heating parts are all arranged in the shell; The heating element is fixedly connected to the center position of the end of the base; The first heating section is close to the base.

6. The segmented heating control device according to claim 5, characterized in that: The multiple sections of the heating parts are all metal wires.

7. The segmented heating control device according to claim 3, characterized in that: The heating element is a heating needle.

8. The segmented heating control device according to any one of claims 3 to 7, characterized in that: The accommodating chamber includes a first accommodating chamber and a second accommodating chamber; The second accommodating cavity is arranged outside the first accommodating cavity; The heating element is arranged in the first accommodating cavity; The airflow sensor is arranged in the second accommodating cavity.

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