Aerosol-generating device

Abstract

The present application relates to an aerosol-generating device comprising: an inhalation port; the atomization assembly comprises a first atomizer and a second atomizer; a first fluid channel engaged with the first atomizer; the second fluid channel is in butt joint with the second atomizer; the airflow sensor comprises a first end part and a second end part which are deviated from each other, the first end part is kept communicated with the first fluid channel, the second end part is kept communicated with the second fluid channel, and the first fluid channel and the second fluid channel can be selectively operated so as to be opened or closed; the airflow sensor senses the airflow change in the first fluid channel when the first fluid channel is conducted, and senses the airflow change in the second fluid channel when the second fluid channel is conducted; and the power supply assembly comprises a power supply and a controller, and the controller is configured to control the power supply to provide electric power for the first atomizer or the second atomizer according to a sensing signal of the airflow sensor.

Description

Technical Field

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

[0002] An aerosol generating device is a device capable of atomizing an aerosol generating matrix to form an aerosol. In some exemplary prior art, an aerosol generating device includes an atomizing component, a mouthpiece component, and a power supply component. The atomizing component includes multiple atomizers and multiple microphones. The atomizing component is rotatably connected to the power supply component, so that rotation selectively establishes a power supply circuit between one atomizer in the atomizing component and the power supply component, and fluidly connects the atomizer electrically connected to the power source to the mouthpiece component. The multiple microphones are arranged one-to-one with the multiple atomizers to sense whether the corresponding atomizer is being inhaled. Upon sensing that the corresponding atomizer is being inhaled, the device responds by activating the power supply circuit established between the power supply component and the atomizer, thereby causing the atomizer to generate aerosol.

[0003] However, with multiple atomizers, the more microphones there are, the higher the cost of the aerosol generating device. Utility Model Content

[0004] The purpose of this application is to provide an aerosol generating device that can reduce costs.

[0005] At least one embodiment of this application provides an aerosol generating apparatus, which includes:

[0006] Intake port;

[0007] The atomizing assembly includes a first atomizer for atomizing a first aerosol generating matrix to generate a first aerosol and a second atomizer for atomizing a second aerosol generating matrix to generate a second aerosol.

[0008] A first fluid channel, which is connected to the first atomizer, is used to transport the first aerosol to the inlet.

[0009] The second fluid channel is connected to the second atomizer and is used to deliver the second aerosol to the air inlet.

[0010] An airflow sensor includes a first end and a second end opposite to each other, the first end being in communication with a first fluid channel, and the second end being in communication with a second fluid channel. The first and second fluid channels are selectively operable to open or close, and the airflow sensor senses changes in airflow in the first fluid channel when the first fluid channel is open, and senses changes in airflow in the second fluid channel when the second fluid channel is open; and

[0011] The power supply assembly includes a power source and a controller, the controller being configured to control the power source to supply electrical power to the first atomizer or the second atomizer based on a sensing signal from the airflow sensor.

[0012] As an example, the controller is configured to sense changes in airflow within the first fluid channel via the first end when the first fluid channel is open, thereby controlling the power supply to provide electrical power to the first atomizer; and to sense changes in airflow within the second fluid channel via the second end when the second fluid channel is open, thereby controlling the power supply to provide electrical power to the second atomizer; or

[0013] The controller is configured to prevent the second atomizer from starting when the first fluid channel is open, and to prevent the first atomizer from starting when the second fluid channel is open.

[0014] As an example, the aerosol generating device further includes a nozzle assembly, with the air intake disposed on the nozzle assembly; wherein

[0015] The nozzle assembly is rotatably connected to the atomizing assembly, so that rotation allows the air inlet to selectively communicate with one of the first fluid channel and the second fluid channel; or

[0016] The nozzle assembly is configured to be detachably connected to the atomizing assembly along a first azimuth angle and a second azimuth angle, and when the nozzle assembly is connected to the atomizing assembly along the first azimuth angle, the air intake is in fluid communication with the first fluid channel, and when the nozzle assembly is connected to the atomizing assembly along the second azimuth angle, the air intake is in fluid communication with the second fluid channel.

[0017] As an example, the aerosol generating apparatus further includes:

[0018] The first air inlet is fluidly connected to the first fluid channel and the outside air, and the first air inlet and the first end are always in communication; and

[0019] The second air inlet is fluidly connected to the second fluid channel and the outside air, and the second air inlet and the second end are always in communication.

[0020] As an example, the aerosol generating apparatus further includes a third fluid channel and a fourth fluid channel that are phase-isolated;

[0021] The first end is located in the third fluid channel, and the third fluid channel is used for fluid communication between the first air inlet and the first atomizer:

[0022] The second end is located in the fourth fluid channel, and the fourth fluid channel is used for fluid communication between the second air inlet and the second atomizer.

[0023] As an example, the airflow sensor includes a differential pressure sensor configured to sense a first air pressure value of the airflow in the third fluid channel via the first end, and a second air pressure value of the airflow in the fourth fluid channel via the second end;

[0024] The controller is configured to control the power supply device to output electrical power to the first atomizer or the second atomizer based on the difference between the first air pressure value and the second air pressure value.

[0025] As an example, the controller is configured to control the power supply to output electrical power to the first atomizer when the first air pressure value is less than the second air pressure value, and to control the power supply to output electrical power to the second atomizer when the first air pressure value is greater than the second air pressure value.

[0026] As an example, the airflow sensor includes a diaphragm, which includes a first surface and a second surface disposed opposite to each other. A first airflow inlet is provided at the first end, which fluidly connects the third fluid channel and the first surface. A second airflow inlet is provided at the second end, which fluidly connects the fourth fluid channel and the second surface.

[0027] A first electrode plate is provided on the first end;

[0028] The diaphragm is configured to deform in response to changes in airflow in the third or fourth fluid channel, thereby altering the capacitance between the diaphragm and the first electrode plate or the electrical parameters associated with that capacitance, causing the airflow sensor to generate a sensing signal.

[0029] As an example, the diaphragm is configured to deform toward the first end when there is negative pressure in the third fluid channel or when airflow flows out, causing the airflow sensor to generate a first sensing signal, and to deform toward the second end when there is negative pressure in the fourth fluid channel or when airflow flows out, causing the airflow sensor to generate a second sensing signal.

[0030] As an example, a second electrode plate is provided on the second end, the first surface faces the first electrode plate, and the second surface faces the second electrode plate;

[0031] The capacitance between the diaphragm and the first electrode, or the electrical parameter associated with the capacitance, is configured to change when the airflow in the third fluid channel changes, causing the airflow sensor to generate a first sensing signal.

[0032] The capacitance between the diaphragm and the second electrode, or the electrical parameter associated with that capacitance, is configured to change when the airflow in the fourth fluid channel changes, causing the airflow sensor to generate a second sensing signal.

[0033] As an example, the airflow sensor includes an electrode plate, a first diaphragm, and a second diaphragm. The first diaphragm is disposed between the first end and the electrode plate, and a first cavity is formed between the first diaphragm and the electrode plate. The second diaphragm is disposed between the second end and the electrode plate, and a second cavity is formed between the second diaphragm and the electrode plate. The first cavity and the second cavity are in fluid communication with the outside.

[0034] The first end has a first airflow inlet that fluidly connects the third fluid channel and the first diaphragm, and the second end has a second airflow inlet that fluidly connects the fourth fluid channel and the second diaphragm;

[0035] The first diaphragm is configured to deform in response to changes in airflow in the third fluid channel, thereby altering the capacitance between the first diaphragm and the electrode or an electrical parameter associated with that capacitance, causing the airflow sensor to generate a first sensing signal.

[0036] The second diaphragm is configured to deform in response to changes in airflow in the fourth fluid channel, thereby altering the capacitance between the second diaphragm and the electrode, or the electrical parameters associated with that capacitance, so that the airflow sensor generates a second sensing signal.

[0037] As an example, the controller is configured to control the power supply to provide electrical power to the first atomizer according to the first sensing signal, and to control the power supply to provide electrical power to the second atomizer according to the second sensing signal.

[0038] As an example, the first atomizer includes a first storage cavity for storing the first aerosol generating matrix, a first heating element for heating the first aerosol generating matrix to generate the first aerosol, and a first airway tube at least partially surrounded by the first storage cavity, wherein at least a portion of the first fluid channel is located within the first airway tube; and / or

[0039] The second atomizer includes a second storage chamber for storing the second aerosol generating matrix, a second heating element for heating the second aerosol generating matrix to generate the second aerosol, and a second air passage at least partially surrounded by the second storage chamber, wherein at least partially of the second fluid passage is located in the second air passage.

[0040] As an example, the air intake and the atomizing component are arranged longitudinally; wherein

[0041] The first end and the second end are arranged laterally; and / or

[0042] The first atomizer and the second atomizer are arranged laterally.

[0043] As an example, the atomizing component is disposed between the air intake and the airflow sensor.

[0044] As an example, the first atomizer is electrically connected to the power source via a wire; and / or

[0045] The second atomizer is electrically connected to the power source via a wire.

[0046] In the aerosol generating device provided in the above embodiments, a first fluid channel is used to transfer the first aerosol generated by the first atomizer to the air intake port, and a second fluid channel is used to transfer the second aerosol generated by the second atomizer to the air intake port. The first and second fluid channels can be selectively operated to be turned on or off, and an airflow sensor senses changes in airflow in the first fluid channel when it is turned on, and senses changes in airflow in the second fluid channel when it is turned on. The controller can control the power supply to provide electrical power to the first or second atomizer based on the sensing signal from the airflow sensor. Therefore, the first and second atomizers share a single airflow sensor, thereby reducing the number of airflow sensors and lowering the cost of the aerosol generating device. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0048] Figure 1 This is a schematic diagram of an aerosol generating apparatus provided in some embodiments of this application;

[0049] Figure 2 This is a schematic diagram of the signal flow of an aerosol generating device provided in some embodiments of this application;

[0050] Figure 3 This is a schematic diagram showing that the air passage between the air inlet and the first and second ends can be disconnected in the aerosol generating apparatus provided in some embodiments of this application;

[0051] Figure 4 This is a schematic diagram showing that the air passage between the air intake and the first and second ends can be disconnected in the aerosol generating apparatus provided in other embodiments of the application;

[0052] Figure 5 This is a schematic diagram of an airflow sensor provided in some embodiments of this application;

[0053] Figure 6 This is a schematic diagram of an airflow sensor provided in other embodiments of this application;

[0054] Figure 7 This is a schematic diagram of an airflow sensor provided in other embodiments of this application;

[0055] In the picture:

[0056] 100. Aerosol generating device;

[0057] 1. Atomizing assembly; 11. First atomizer; 111. First atomizing core; 112. First housing; 113. First storage chamber; 114. First airway tube; 12. Second atomizer; 121. Second atomizing core; 13. First fluid channel; 14. Second fluid channel;

[0058] 2. Suction nozzle assembly; 21. Inlet; 22. Air duct; 23. Substrate;

[0059] 3. Power supply components; 31. Power supply; 32. Controller;

[0060] 4 / 4a / 4b, airflow sensor; 41 / 41a / 41b, first end; 42 / 42a / 42b, second end; 421, end cap; 43 / 43a, diaphragm; 44 / 44a / 44b, first electrode plate; 45 / 45a / 45b, first airflow inlet; 46 / 46a / 46b, second airflow inlet; 47a, second electrode plate; 481b, first diaphragm; 482b, second diaphragm; 491b, first cavity; 492b, second cavity;

[0061] 51. First air inlet; 52. Second air inlet; 61. First adjusting element; 62. Second adjusting element; 71. Third fluid channel; 72. Fourth fluid channel; 8. Retaining seat. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0063] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0064] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0065] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0066] Please refer to Figure 1 This application provides an embodiment of an aerosol generating device 100, which includes an atomizing component 1, an air intake 21, and a power supply component 3.

[0067] The atomizing component 1 includes multiple atomizers, which can atomize the aerosol generation matrix to produce aerosols.

[0068] It should be noted that, as used in this document, "multiple" refers to two or more atomizers. Based on this, the atomizing component 1 includes at least two atomizers. Two atomizers in the atomizing component 1 are defined as the first atomizer 11 and the second atomizer 12. The first atomizer 11 and the second atomizer 12 may have the same structural features, but are not limited thereto.

[0069] In some embodiments, the aerosol generating matrix includes a liquid matrix, which may contain a liquid containing tobacco-containing substances with volatile tobacco aroma components, or a liquid containing non-tobacco substances. The liquid matrix may contain water, pharmaceutical solutions, solvents, ethanol, plant extracts, fragrances, flavorings, or vitamin mixtures, but is not limited thereto. The vitamin mixture may be a mixture containing at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Based on the different properties of the liquid matrix, the aerosol generating device 100 can be used in different fields, such as medical applications and electronic aerosol atomization.

[0070] The first atomizer 11 can be used to atomize the first aerosol generating matrix to generate the first aerosol, and the second atomizer 12 can be used to atomize the second aerosol generating matrix to generate the second aerosol.

[0071] In some embodiments, the first aerosol generating matrix and the second aerosol generating matrix have the same material composition, so that the first aerosol and the second aerosol can have the same taste.

[0072] In some embodiments, the material composition of the first aerosol generating matrix is ​​not entirely the same as that of the second aerosol generating matrix, so that the first aerosol and the second aerosol can have different flavors, or the first aerosol and the second aerosol may have the same flavor but different textures.

[0073] In some embodiments, the first aerosol generating matrix includes a first liquid matrix, and the first atomizer 11 includes a first atomizing core 111. The first atomizing core 111 includes a first liquid-absorbing element and a first heating element, with the first heating element disposed on the first liquid-absorbing element. The first liquid-absorbing element can be a porous material used to guide the first liquid matrix into the atomization range of the first heating element. The first heating element is used to heat and atomize the first liquid matrix, thereby generating the first aerosol. The porous material can be a fiber, such as cotton fiber, polypropylene fiber, polyester fiber, or nylon fiber. The porous material can be porous ceramic or porous metal; this application does not limit the structure and composition of the porous material.

[0074] In some embodiments, the first aerosol generating matrix includes a first liquid matrix, and the first atomizer 11 includes a first atomizing core 111. The first atomizing core 111 includes an ultrasonic element capable of generating ultrasonic waves. The first atomizer 11 uses ultrasonic waves to atomize the first liquid matrix to form a first aerosol. Of course, the first atomizer 11 may also include other elements capable of atomizing the first liquid matrix to form the first aerosol.

[0075] In some embodiments, the second aerosol generating matrix includes a second liquid matrix, and the second atomizer 12 includes a second atomizing core 121. The second atomizing core 121 includes a second liquid-absorbing element and a second heating element, with the second heating element disposed on the second liquid-absorbing element. The second liquid-absorbing element may be a porous body for guiding the second liquid matrix into the atomization range of the second heating element. The second heating element is used to heat the atomized liquid matrix, thereby generating the second aerosol.

[0076] In some embodiments, the first heating element included in the first atomizing core 111 and the second heating element included in the second atomizing core 121 have different resistance values ​​or different structural features. Of course, in other embodiments, the first heating element included in the first atomizing core 111 and the second heating element included in the second atomizing core 121 may also have the same resistance value or the same structural features.

[0077] In some embodiments, the second aerosol generating matrix includes a second liquid matrix, and the second atomizer 12 includes a second atomizing core 121. The second atomizing core 121 includes an ultrasonic element capable of generating ultrasonic waves. The second atomizer 12 uses ultrasonic waves to atomize the first liquid matrix to form a second aerosol. Of course, the second atomizer 12 may also include other elements capable of atomizing the second liquid matrix to form a second aerosol.

[0078] In some embodiments, reference may be made to Figure 1 The aerosol generating device 100 also includes a first fluid channel 13 and a second fluid channel 14 that are independently arranged. The first fluid channel 13 is connected to the first atomizer 11 and is used to transfer the first aerosol to the air inlet 21; the second fluid channel 14 is connected to the second atomizer 12 and is used to transfer the second aerosol to the air inlet 21.

[0079] Further, you can refer to Figure 1 The first atomizer 11 further includes a first housing 112 having a first storage chamber 113 inside and a first air passage 114 disposed inside the first housing 112. At least a portion of the first fluid channel 13 is disposed in the first air passage 114. The first storage chamber 113 is used to store the first aerosol generation matrix, and the first atomizing core 111 is in fluid communication with the first storage chamber 113, so that the liquid matrix in the first storage chamber 113 can be conducted to the first atomizing core 111 and atomized by the first atomizing core 111 to form the first aerosol. The first atomizing core 111 is in fluid communication with the first air passage 114, so that the first aerosol formed at the first atomizing core 111 can be transmitted to the inhalation port 21 by the first air passage 114.

[0080] You can refer to Figure 1The second atomizer 12 may further include a second housing 122 having a second storage cavity 123 inside and a second air passage 124 disposed inside the second housing 122, with at least a portion of the second fluid channel 14 disposed in the second air passage 124. The second storage cavity 123 is used to store the second aerosol generation matrix, and the second atomizing core 121 is in fluid communication with the second storage cavity 123, so that the liquid matrix in the second storage cavity 123 can be conducted to the second atomizing core 121 and atomized by the second atomizing core 121 to form the second aerosol. The second atomizing core 121 is in fluid communication with the second air passage 124, so that the second aerosol formed at the second atomizing core 121 can be transported to the inhalation port by the second air passage 124.

[0081] In such Figure 1 In the illustrated embodiment, at least a portion of the first atomizing core 111 is disposed in the first airway tube 114, thereby forming a first aerosol in the first airway tube 114 and then conveying it to the inhalation port 21 via the first airway tube 114. At least a portion of the second atomizing core 121 is disposed in the second airway tube 124, thereby forming a second aerosol in the second airway tube 124 and then conveying it to the inhalation port 21 via the second airway tube 124.

[0082] In some embodiments, the power supply component 3 can independently provide electrical power to the first atomizer 11 and the second atomizer 12 so that the first atomizer 11 and the second atomizer 12 can operate independently of each other and produce aerosol independently of each other.

[0083] Furthermore, the power supply component 3 is configured not to simultaneously provide electrical power to the first atomizer 11 and the second atomizer 12, so that the first atomizer 11 and the second atomizer 12 cannot work at the same time, and the first aerosol and the second aerosol cannot be generated at the same time.

[0084] Since the atomizing assembly 1 includes multiple atomizers, the power supply assembly 3 can provide electrical power to at most one of the first atomizer 11 and the second atomizer 12 at the same time.

[0085] In some embodiments, reference may be made to Figure 2 The power supply component 3 includes a power source 31, which can be any suitable battery, such as a rechargeable battery or a disposable battery. The power supply component 3 also includes a controller 32, which is electrically connected to the power source 31 to control the electrical power output of the power source 31. For example, the controller 32 can control the power source 31 to output electrical power to the first atomizer 11 or the second atomizer 12, thereby causing the first atomizer 11 to generate a first aerosol or the second atomizer 12 to generate a second aerosol.

[0086] In some embodiments, the power supply 31 is configured to have a fixed positional relationship with the first atomizer 11 and the second atomizer 12, or the power supply 31 is configured to be immovable relative to the atomizing assembly 1. Based on this, the atomizers that generate aerosols can be changed primarily by controlling the electrical power output of the power supply 31.

[0087] Furthermore, the power supply component 3 and the first atomizer 11 are electrically connected by welding wires. Compared with the two using conductive terminals, conductive springs, conductive posts or conductive pins to abut or clamp each other, the cost can be effectively reduced.

[0088] Similarly, the power supply component 3 can also be electrically connected to the second atomizer 12 via wire soldering to further reduce costs.

[0089] In some embodiments, reference may be made to Figure 1 , Figure 3 and Figure 4 The aerosol generating device 100 further includes an airflow sensor 4, which includes a first end 41 and a second end 42 that are opposite to each other. The first end 41 is in fluid communication with the first fluid channel 13, and the airflow sensor 4 is configured to sense changes in airflow in the first fluid channel 13 through the first end 41 when the first fluid channel 13 is open, thereby the airflow sensor 4 can sense whether the first atomizer 11 is being drawn in, and generate a first sensing signal when it senses that the first atomizer 11 is being drawn in. The second end 42 is in fluid communication with the second fluid channel 14, and the airflow sensor 4 is configured to sense changes in airflow in the second fluid channel 14 through the second end 42 when the second fluid channel 14 is open, thereby the airflow sensor 4 can sense whether the second atomizer 12 is being drawn in, and generate a second sensing signal when it senses that the second atomizer 12 is being drawn in.

[0090] You can refer to Figure 2 The controller 32 is electrically connected to the airflow sensor 4, or the controller 32 is communicatively connected to the airflow sensor 4, so that the controller 32 can receive the sensing signal of the airflow sensor 4, and then the controller 32 can control the power supply 31 to provide electrical power to the first atomizer 11 or the second atomizer 12 based on the sensing signal.

[0091] For example, when the first sensing signal is received, the controller 32 controls the power supply 31 to provide electrical power to the first atomizer 11 to start the first atomizer 11, so that the first atomizer 11 generates the first aerosol; when the second sensing signal is received, the controller 32 controls the power supply 31 to provide electrical power to the second atomizer 12 to start the second atomizer 12, so that the second atomizer 12 generates the second aerosol.

[0092] Alternatively, for example, upon receiving the first sensing signal, the controller 32 controls to prevent the second atomizer 12 from starting, or prevents the power supply 31 from providing electrical power to the second atomizer 12, so that the second atomizer 12 cannot generate the second aerosol; upon receiving the second sensing signal, the controller 32 controls to prevent the first atomizer 11 from starting, or prevents the power supply 31 from providing electrical power to the first atomizer 11, so that the first atomizer 11 cannot generate the first aerosol.

[0093] When the first atomizer 11 is disabled, the controller 32 can control the activation of one or more other atomizers based on the suction at the inhalation port 21, for example, controlling the activation of the second atomizer 12. Similarly, when the second atomizer 12 is disabled, the controller 32 can control the activation of one or more other atomizers based on the suction at the inhalation port 21, for example, controlling the activation of the first atomizer 11.

[0094] In some embodiments, the first fluid channel 13 and the second fluid channel 14 can be selectively operated to open or close.

[0095] As an example, when the first fluid channel 13 is open, the air passage between the air inlet 21 and the first end 41 is open. The airflow in the first fluid channel 13 changes when the user inhales through the air inlet 21, and the first end 41 can sense the change in airflow in the first fluid channel 13, thus the airflow sensor 4 can generate a first sensing signal. When the first fluid channel 13 is closed, the air passage between the air inlet 21 and the first end 41 is closed, so the first end 41 cannot sense whether the air inlet 21 is being drawn in, and the airflow sensor 4 cannot generate a first sensing signal.

[0096] Similarly, when the second fluid channel 14 is open, the air passage between the air inlet 21 and the second end 42 is open. The airflow in the second fluid channel 14 will change when the user inhales through the air inlet 21, and the second end 42 can sense the change in airflow in the second fluid channel 14. Therefore, the airflow sensor 4 can generate a second sensing signal. When the second fluid channel 14 is closed, the air passage between the air inlet 21 and the second end 42 is disconnected, so the second end 42 cannot sense whether the air inlet 21 is being drawn in, and the airflow sensor 4 cannot generate a second sensing signal.

[0097] Furthermore, the first atomizer 11 and / or the second atomizer 12 can be selectively activated or deactivated by selectively opening or closing the first fluid channel 13 and / or the second fluid channel 14.

[0098] In some embodiments, the first fluid channel 13 and the second fluid channel 14 are configured to be open at most one, so that the airflow sensor 4 can sense whether the first atomizer 11 or the second atomizer 12 is being drawn in, prevent the airflow sensor 4 from generating the first sensing signal and the second sensing signal at the same time, prevent the power supply 31 from providing power to the first atomizer 11 and the second atomizer 12 at the same time, and enable the first atomizer 11 and the second atomizer 12 to share the same airflow sensor 4, thereby reducing the number of airflow sensors 4 in the aerosol generating device 100 and helping to reduce the cost of the aerosol generating device 100.

[0099] In some embodiments, reference may be made to Figure 1 The aerosol generating device 100 also includes a first air inlet 51 and a second air inlet 52 that are independent of each other. The first air inlet 51 is fluidly connected to the first fluid channel 13 and the outside air, and is located upstream of the first fluid channel 13 along the flow direction of the airflow in the aerosol generating device 100. The second air inlet 52 is fluidly connected to the second fluid channel 14 and the outside air, and is located upstream of the second fluid channel 14 along the flow direction of the airflow in the aerosol generating device 100.

[0100] The first air inlet 51 can be an air intake terminal, allowing direct communication with the outside air and direct introduction of outside air into the aerosol generating device 100. The second air inlet 52 can also be an air intake terminal, allowing direct communication with the outside air and direct introduction of outside air into the aerosol generating device. In other embodiments (not shown), the aerosol generating device further includes a housing with an air intake terminal. The first air inlet and / or the second air inlet are located inside the aerosol generating device and are connected to the air intake terminal. Thus, outside air first enters the aerosol generating device through the air intake terminal and then flows into the first air inlet and / or the second air inlet, thereby allowing indirect fluid communication between the first air inlet and / or the outside air.

[0101] Furthermore, the first air inlet 51 is fluidly connected to the first end 41, so that when the first air inlet 51 is open, the first end 41 can be indirectly fluidly connected to the outside air. The second air inlet 52 is fluidly connected to the second end 42, so that when the second air inlet 52 is open, the second end 42 can be indirectly fluidly connected to the outside air.

[0102] In some embodiments, the first air inlet 51 and the first end 41 are always in fluid communication.

[0103] In other words, when the air passage between the intake port 21 and the first end 41 is disconnected, or when the first fluid channel 13 is closed, the first intake port 51 and the first end 41 remain in fluid communication. Furthermore, when the first fluid channel 13 is closed and the second fluid channel 14 is open, the first intake port 51 and the first end 41 can continue to maintain fluid communication. Thus, when the first fluid channel 13 is closed, and the intake port 21 is being drawn in, the air pressure at the first end 41 is essentially equal to the ambient air pressure outside the aerosol generating device 100, and almost no significant airflow occurs at the first end 41.

[0104] When the air passage between the intake port 21 and the first end 41 is open, or when the first fluid channel 13 is open, the first intake port 51 and the first end 41 can continue to maintain fluid communication. Furthermore, when the first fluid channel 13 is open and the second fluid channel 14 is closed, the first intake port 51 and the first end 41 can maintain fluid communication. Thus, when the first fluid channel 13 is open, and the intake port 21 is being drawn in, outside air flows into the intake port 21 sequentially through the first intake port 51 and the first fluid channel 13, while air around the first end 41 flows towards the intake port 21 through the first fluid channel 13, thereby creating a negative pressure environment for the first end 41.

[0105] In some embodiments, the first fluid channel 13 is configured to be bidirectionally switchable between closed and open. In other embodiments, the first fluid channel 13 is configured to be unidirectionally switchable from open to closed, or unidirectionally switchable from closed to open.

[0106] If the air passage between the intake port 21 and the first end 41 is disconnected at any one or more points, the first fluid passage 13 will be closed.

[0107] As a typical example, you can refer to Figure 3 The air passage between the inlet 21 and the first atomizer 11 is configured to be disconnectable, so that the first fluid passage 13 can be closed by disconnecting the air passage between the inlet 21 and the first atomizer 11.

[0108] For example, the aerosol generating device 100 may include a first adjusting element 61, which is movable back and forth between a first position and a second position relative to the atomizing assembly 1. When the first adjusting element 61 is in the first position, the air passage between the inlet 21 and the first atomizer 11 is open; when the first adjusting element 61 is in the second position, the air passage between the inlet 21 and the first atomizer 11 is closed. The first adjusting element 61 may include a manual adjusting element, so that it can be operated by a user to drive the first adjusting element 61 to move. The first adjusting element 61 may also include an electric adjusting element, which can move automatically in response to control commands from the controller.

[0109] As a typical example, you can refer to Figure 1 and Figure 4 The air passage between the first end 41 and the first atomizer 11 is configured to be disconnectable, so that the first fluid passage 13 can be closed by disconnecting the air passage between the first end 41 and the first atomizer 11.

[0110] For example, the aerosol generating device 100 may include a second adjusting element 62, which is movable relative to the atomizing assembly 1 between a third position and a fourth position. When the second adjusting element 62 is in the third position, the air passage between the first end 41 and the first atomizer 11 is open; when the second adjusting element 62 is in the fourth position, the air passage between the first end 41 and the first atomizer 11 is closed. The second adjusting element 62 may include a manual adjusting element. The second adjusting element 62 may also include an electric adjusting element.

[0111] In some embodiments, the second air inlet 52 and the second end 42 are always in fluid communication.

[0112] In other words, it can be referred to Figure 3 and Figure 4 When the air passage between the intake port 21 and the second end 42 is disconnected, or when the second fluid channel 14 is closed, the second intake port 52 and the second end 42 remain in fluid communication. Furthermore, when the first fluid channel 13 is open and the second fluid channel 14 is closed, the second intake port 52 and the second end 42 can continue to maintain fluid communication. Thus, when the intake port 21 is drawn in, the air pressure at the second end 42 is essentially equal to the ambient air pressure outside the aerosol generating device 100, and almost no significant airflow occurs at the second end 42.

[0113] When the air passage between the intake port 21 and the second end 42 is open, or when the second fluid channel 14 is open, the second intake port 52 and the second end 42 can continue to maintain fluid communication. Furthermore, when the first fluid channel 13 is closed and the second fluid channel 14 is open, the second intake port 52 and the second end 42 can maintain fluid communication. Thus, when the intake port 21 is drawn in, outside air flows into the intake port 21 sequentially through the second intake port 52 and the second fluid channel 14, while air around the second end 42 flows towards the intake port through the second fluid channel 14, thereby creating a negative pressure environment for the second end 42.

[0114] In some embodiments, the second fluid channel 14 is configured to be bidirectionally switchable between closed and open states. In other embodiments, the second fluid channel 14 is configured to be unidirectionally switchable from open to closed, or unidirectionally switchable from closed to open.

[0115] If the air passage between the intake port 21 and the second end 42 is disconnected at any one or more points, the second fluid passage 14 will be closed.

[0116] As a typical example, you can refer to Figure 3 The air passage between the inlet 21 and the second atomizer 12 is configured to be disconnectable, so that the second fluid passage 14 can be closed by disconnecting the air passage between the inlet 21 and the second atomizer 12.

[0117] For example, the aerosol generating device 100 may include a first adjusting element 61, which can move back and forth between a first position and a second position relative to the atomizing assembly 1. When the first adjusting element 61 is in the first position, the air passage between the inlet 21 and the second atomizer 12 is disconnected, and when the first adjusting element 61 is in the second position, the air passage between the inlet 21 and the second atomizer 12 is connected.

[0118] Furthermore, when the first adjusting element 61 is in the first position, the air passage between the inlet 21 and the first atomizer 11 is open, but the air passage between the inlet 21 and the second atomizer 12 is closed; when the first adjusting element 61 is in the second position, the air passage between the inlet 21 and the first atomizer 11 is closed, but the air passage between the inlet 21 and the second atomizer 12 is open.

[0119] Furthermore, the first adjusting element 61 can also be configured to move to a fifth position, in which the airflow path between the inlet 21 and the first atomizer 11 is disconnected, and simultaneously the airflow path between the inlet 21 and the second atomizer 12 is disconnected. The fifth position can be located between the first and second positions, but is not limited thereto.

[0120] As a typical example, you can refer to Figure 4 The air passage between the second end 42 and the second atomizer 12 is configured to be disconnectable, so that the second fluid passage 14 can be closed by disconnecting the air passage between the second end 42 and the second atomizer 12.

[0121] For example, the aerosol generating device 100 may include a second adjusting element 62, which can move back and forth between a third position and a fourth position relative to the atomizing assembly 1. When the second adjusting element 62 is in the third position, the air passage between the second end 42 and the second atomizer 12 is disconnected, and when the second adjusting element 62 is in the fourth position, the air passage between the second end 42 and the second atomizer 12 is connected.

[0122] Furthermore, when the second adjusting element 62 is in the third position, the air passage between the first end 41 and the first atomizer 11 is open, but the air passage between the second end 42 and the second atomizer 12 is closed; when the second adjusting element 62 is in the fourth position, the air passage between the first end 41 and the first atomizer 11 is closed, but the air passage between the second end 42 and the second atomizer 12 is open.

[0123] Furthermore, the second adjusting element 62 can also be configured to move to a sixth position, in which the air passage between the first end 41 and the first atomizer 11 is disconnected, and the air passage between the second end 42 and the second atomizer 12 is also disconnected. The sixth position can be located between the third and fourth positions, but is not limited thereto.

[0124] It should be noted that the sharing of a first adjusting element 61 between the first atomizer 11 and the second atomizer 12 is optional, not mandatory. In other embodiments (not shown), there may be two first adjusting elements, one of which is used to control the opening and closing of the air passage between the first atomizer and the inhalation port, and the other of which is used to control the opening and closing of the air passage between the second atomizer and the inhalation port.

[0125] Similarly, it is optional, not mandatory, for the first atomizer 11 and the second atomizer 12 to share a second adjusting element 62. In other embodiments, not shown, there may be two second adjusting elements, one of which is used to control the opening and closing of the air passage between the first atomizer and the first end, and the other of which is used to control the opening and closing of the air passage between the second atomizer and the second end.

[0126] You can refer to Figure 1 The aerosol generating device 100 also includes a nozzle assembly 2, with an air intake 21 disposed on the nozzle assembly 2. At least a portion of the nozzle assembly 2 can be held in the lips by a user, and when the user inhales the aerosol generating device 100, the air intake 21 faces the user's mouth, and the user inhales the aerosol generated by the atomizing component 1 by inhaling the nozzle assembly 2.

[0127] As a typical example, the mouthpiece assembly 2 is rotatably connected to the atomizing assembly 1 so that the inlet 21 can be selectively fluid-communicated with at most one of the first fluid channel 13 and the second fluid channel 14 by rotation.

[0128] More specifically, the inhalation port 21 is located at the proximal end of the mouthpiece assembly 2. The mouthpiece assembly 2 also includes an air guide tube 22, a base 23, and a first rotating mechanism (not shown) disposed on the base 23. The air guide tube 22 is in fluid communication with the inhalation port 21, and the distal end of the air guide tube 22 is positioned towards the atomizing assembly 1. The base 23 is disposed around the periphery of the air guide tube 22 and is supported by the atomizing assembly 1. The atomizing assembly 1 also includes a second rotating mechanism (not shown). The first rotating mechanism and the second rotating mechanism are rotatably engaged. When the mouthpiece assembly 2 rotates relative to the atomizing assembly 1, the mouthpiece assembly 2 or the atomizing assembly 1 rotates around the central axis of the first rotating mechanism and / or the second rotating mechanism. One of the first rotating mechanism and the second rotating mechanism includes a receiving hole, and the other includes a rotating post, at least partially rotatably located in the receiving hole.

[0129] When the rotation angle of the mouthpiece assembly 2 is 0°, the distal end of the air duct 22 is positioned corresponding to the first atomizer 11 and fluidly connects the first atomizer 11 and the inhalation port 21. The base 23 is positioned corresponding to the second atomizer 12, thereby connecting the air passage between the first atomizer 11 and the inhalation port 21 and disconnecting the air passage between the second atomizer 12 and the inhalation port 21.

[0130] When the mouthpiece assembly 2 rotates at an angle θ, the distal end of the air duct 22 corresponds to the second atomizer 12 and is fluidly connected to the second atomizer 12 and the inhalation port 21. The base 23 corresponds to the first atomizer 11, thereby disconnecting the air path between the first atomizer 11 and the inhalation port 21, and opening the air path between the second atomizer 12 and the inhalation port 21. θ can be equal to 360° / N, where N is the number of atomizers in the atomization assembly 1. For example, when the atomizers included in the atomization assembly 1 are only the first atomizer 11 and the second atomizer 12, θ can be 180°.

[0131] As a typical example, the mouthpiece assembly 2 is configured to be detachably connected to the atomizing assembly 1 along a first azimuth angle and a second azimuth angle, and when the mouthpiece assembly 2 is connected to the atomizing assembly 1 along the first azimuth angle, the inhalation port 21 is in fluid communication with the first atomizer 11, and when the mouthpiece assembly 2 is connected to the atomizing assembly 1 along the second azimuth angle, the inhalation port 21 is in fluid communication with the second atomizer 12.

[0132] Furthermore, when the mouthpiece assembly 2 is connected to the atomizing assembly 1 along the first azimuth angle, the air guide tube 22 of the mouthpiece assembly 2 is set to correspond to the first atomizer 11 and fluidly connects the first atomizer 11 and the inhalation port 21, and the base 23 of the mouthpiece assembly 2 is set to correspond to the second atomizer 12, so that the air passage between the first atomizer 11 and the inhalation port 21 is connected, and the air passage between the second atomizer 12 and the inhalation port 21 is disconnected.

[0133] When it is necessary to connect the airflow between the inlet 21 and the second atomizer 12, the mouthpiece assembly 2 must first be removed from the atomizing assembly 1. Then, the mouthpiece assembly 2 is connected to the atomizing assembly 1 along the second azimuth angle, so that the distal end of the air duct 22 corresponds to the second atomizer 12 and fluidly connects the second atomizer 12 and the inlet 21. The base 23 corresponds to the first atomizer 11, thus disconnecting the airflow between the first atomizer 11 and the inlet 21, and connecting the airflow between the second atomizer 12 and the inlet 21. The phase difference between the first azimuth angle and the second azimuth angle is β, which can be equal to 360° / N, where N is the number of atomizers in the atomizing assembly 1. For example, when the atomizers included in the atomizing assembly 1 are only the first atomizer 11 and the second atomizer 12, β can be 180°.

[0134] In some embodiments, reference may be made to Figure 1 The aerosol generating apparatus 100 further includes a third fluid channel 71 and a fourth fluid channel 72 disposed in isolation from each other. A first end 41 is located in the third fluid channel 71, and a second end 42 is located in the fourth fluid channel 72, thereby isolating the first end 41 from the second end 42. The first fluid channel 13 may include the third fluid channel 71. The second fluid channel 14 may include the fourth fluid channel 72.

[0135] The third fluid channel 71 is used to fluidly connect the first air inlet 51 and the first atomizer 11, so that the first end 41 can be fluidly connected to the first air inlet 51 and the first atomizer 11; the fourth fluid channel 72 is used to fluidly connect the second air inlet 52 and the second atomizer 12, so that the second end 52 can be fluidly connected to the second air inlet 52 and the second atomizer 12.

[0136] When the air passage between the first end 41 and the first atomizer 11 is open, the third fluid channel 71 is also open. This opens the air passage between the first atomizer 11 and the inhalation port 21, allowing airflow to exit the third fluid channel 71, flow into the first atomizer 11, and finally reach the inhalation port 21 during inhalation, creating a negative pressure in the third fluid channel 71. The first end 41 can sense changes in the airflow in the first fluid channel 13 by sensing changes in the airflow in the third fluid channel 71, thereby generating a first sensing signal.

[0137] When the air passage between the second end 42 and the second atomizer 12 is open, the fourth fluid channel 72 is also open. This opens the air passage between the second atomizer 12 and the inhalation port 21, allowing airflow to exit the fourth fluid channel 72, flow into the second atomizer 12, and finally reach the inhalation port 21 during inhalation, creating a negative pressure in the airflow of the fourth fluid channel 72. The second end 42 can sense changes in the airflow in the second fluid channel 14 by sensing changes in the airflow in the fourth fluid channel 72, thereby generating a second sensing signal.

[0138] You can refer to Figure 1 The aerosol generating apparatus 100 may include a retaining seat 8, which has a retaining cavity for accommodating the airflow sensor 4. At least a portion of the third fluid channel 71 and at least a portion of the fourth fluid channel 72 may both be formed on the retaining seat 8. When the airflow sensor 4 is disposed in the retaining cavity, the sidewall of the airflow sensor 4 seals against the retaining seat 8. The sidewall of the airflow sensor 4 is located between the first end 41 and the second end 42, thereby isolating the first end 41 and the second end 42. The retaining seat 8 may be made of silicone to ensure a good seal between the sidewall of the airflow sensor 4 and the retaining seat 8.

[0139] In some embodiments, the airflow sensor 4 includes a differential pressure sensor configured to sense a first air pressure value of the airflow in the third fluid channel 71 via a first end 41, and a second air pressure value of the airflow in the fourth fluid channel 72 via a second end 42. The controller 32 is configured to control the power supply 31 device to output electrical power to the first atomizer 11 or the second atomizer 12 based on the difference between the first and second air pressure values.

[0140] Furthermore, the controller 32 is configured to control the power supply 31 device to output electrical power to the first atomizer 11 when the first air pressure value is less than the second air pressure value, and to control the power supply 31 device to output electrical power to the second atomizer 12 when the first air pressure value is greater than the second air pressure value.

[0141] Specifically, when the air passage between the inlet 21 and the first end 41 is open, and the air passage between the inlet 21 and the second end 42 is closed, the fourth fluid channel 72 or the second end 42 remains fluidly connected to the second air inlet 52. When the inlet 21 is drawn in, the airflow in the third fluid channel 71 flows out, thus forming a negative pressure. That is, the first air pressure value is less than the ambient air pressure outside the aerosol generating device 100, while the fourth fluid channel 72 remains fluidly connected to the outside air, so the second air pressure value is basically equal to the ambient air pressure outside the aerosol generating device 100. Thus, the airflow sensor 4 generates a first sensing signal, and the controller 32 controls the power supply 31 to provide electrical power to the first atomizer 11 according to the first sensing signal.

[0142] When the air passage between the inlet 21 and the second end 42 is open, and the air passage between the inlet 21 and the first end 41 is closed, the third fluid channel 71 or the first end 41 remains fluidly connected to the first air inlet 51. When the inlet 21 is drawn in, the airflow in the fourth fluid channel 72 flows out, thus forming a negative pressure. That is, the second air pressure value is less than the ambient air pressure outside the aerosol generating device 100. Because the third fluid channel 71 remains fluidly connected to the outside air, the first air pressure value is basically equal to the ambient air pressure outside the aerosol generating device 100. Thus, the airflow sensor 4 generates a second sensing signal, and the controller 32 controls the power supply 31 to provide electrical power to the second atomizer 12 according to the second sensing signal.

[0143] The differential pressure sensor can be any suitable differential pressure sensor.

[0144] In some embodiments, reference may be made to Figure 5 The airflow sensor 4 includes a diaphragm 43, which includes a first surface and a second surface disposed opposite to each other. A first airflow inlet 43 is provided on the first end 41, which is fluidly connected to a third fluid channel 71 and the first surface. A second airflow inlet 44 is provided on the second end 42, which is fluidly connected to the fourth fluid channel 72 and the second surface.

[0145] A first electrode plate 44 is provided on the first end 41. The first electrode plate 44 and the diaphragm 43 cooperate to form a first capacitor. When the air pressure values ​​on the side where the first surface is located and the side where the second surface is located are different, the diaphragm 43 can deform, thereby changing the capacitance value of the first capacitor and the electrical parameters associated with the capacitance value. The electrical parameters associated with the capacitance value of the first capacitor include, but are not limited to, the amount of charge, the voltage value, or the direction of charge flow. Specifically, when charge flows out of the first capacitor, the amount of charge in the first capacitor decreases, and the first capacitor discharges; when charge flows into the first capacitor, the amount of charge in the first capacitor increases, and the first capacitor charges. Therefore, the electrical parameters associated with the capacitance value of the first capacitor may also include the current value or the direction of the current in the circuit where the first capacitor is located.

[0146] The first surface of the diaphragm 43 is in fluid communication with the third fluid channel 71 through the first airflow inlet 45, and the second surface of the diaphragm 43 is in fluid communication with the fourth fluid channel 72 through the second airflow inlet 46. Thus, changes in the airflow in the third fluid channel 71 or the fourth fluid channel 72 can cause the diaphragm to deform, thereby changing the capacitance value of the first capacitor or changing the electrical parameters associated with the capacitance value of the first capacitor, so that the airflow sensor 4 generates a sensing signal.

[0147] In some embodiments, the diaphragm 43 is configured to deform toward the first end 41 when the airflow in the third fluid channel 71 is under negative pressure or flows out, so that the airflow sensor 4 generates a first sensing signal, and to deform toward the second end 42 when the airflow in the fourth fluid channel 72 is under negative pressure or flows out, so that the airflow sensor 4 generates a second sensing signal.

[0148] More specifically, when the air passage between the intake port 21 and the first end 41 is open, and the air passage between the intake port 21 and the second end 42 is closed, the fourth fluid channel 72 or the second end 42 remains fluidly connected to the second air inlet 52. When the intake port 21 is drawn in, the airflow in the third fluid channel 71 flows out, thus creating a negative pressure. Because the fourth fluid channel 72 remains fluidly connected to the outside air, the air pressure in the fourth fluid channel 72 is basically equal to the ambient air pressure outside the aerosol generating device 100. As a result, the diaphragm 43 deforms toward the first end 41 or the first electrode plate 44, reducing the distance between the diaphragm 43 and the first electrode plate 44, and the airflow sensor 4 thus generates a first sensing signal.

[0149] When the air passage between the intake port 21 and the second end 42 is open, and the air passage between the intake port 21 and the first end 41 is closed, the third fluid channel 71 or the first end 41 remains fluidly connected to the first air inlet 51. When the intake port 21 is drawn in, the airflow in the fourth fluid channel 72 flows out, thus forming a negative pressure. Since the third fluid channel 71 remains fluidly connected to the outside air, the third fluid channel 71 is essentially equal to the ambient air pressure outside the aerosol generating device 100. As a result, the diaphragm 43 deforms away from the first end 41 or the first electrode plate 44, increasing the distance between the diaphragm 43 and the first electrode plate 44, and the airflow sensor 4 generates a second sensing signal.

[0150] In some embodiments, reference may be made to Figure 5 The second end 42 includes an end cap 421, a diaphragm 43 is located between the first electrode plate 44 and the end cap 421, and the diaphragm 43 is spaced apart from the end cap 421 and the first electrode plate 44. A second airflow inlet 46 may be provided on the end cap 421, and at least a portion of the first airflow inlet 45 may be provided on the first electrode plate 44.

[0151] In some embodiments, reference may be made to Figure 6The airflow sensor 4a also includes a second electrode plate 47a disposed on the second end 42a. The first surface of the diaphragm 43a faces the first electrode plate, and the second surface of the diaphragm 43a faces the second electrode plate 47a. Thus, the second electrode plate 47a and the diaphragm 43a cooperate to form a second capacitor. When the air pressure values ​​on the side where the first surface is located and the side where the second surface is located are different, the diaphragm 43a can deform, thereby causing the capacitance value of the second capacitor and the electrical parameters associated with the capacitance value of the second capacitor to change. The electrical parameters associated with the capacitance value of the second capacitor include, but are not limited to: charge amount, voltage value, direction of charge flow, or current value or direction of current in the circuit where the second capacitor is located.

[0152] The capacitance value between the diaphragm 43a and the first electrode 44a, or the electrical parameter associated with the capacitance value, or the capacitance value of the first capacitor, or the electrical parameter associated with the capacitance value, is configured to change when the airflow changes in the third fluid channel 71, causing the airflow sensor 4 to generate a first sensing signal.

[0153] The capacitance or associated electrical parameter between the diaphragm 43a and the second electrode 47a, or the capacitance or associated electrical parameter of the second capacitor, is configured to change when the airflow in the fourth fluid channel 72 changes, causing the airflow sensor 4 to generate a second sensing signal.

[0154] In this embodiment, when the diaphragm 43a deforms, the capacitance value or corresponding electrical parameter of the first capacitor changes synchronously and in opposite directions with the capacitance value or corresponding electrical parameter of the second capacitor.

[0155] The airflow sensor 4 can generate a first sensing signal based solely on the change in the first capacitance, or it can generate a first sensing signal based on the superposition of the changes in both the first and second capacitances.

[0156] The airflow sensor 4 can generate a second sensing signal based solely on the change in the second capacitor, or it can generate a second sensing signal based on the superposition of the changes in both the first and second capacitors.

[0157] A first electrode plate 44a and a second electrode plate 47a are respectively disposed on opposite sides of the diaphragm 43a, so that the diaphragm 43a and the first electrode plate 44a form a first capacitor, and the diaphragm 43a and the second electrode plate 47a form a second capacitor. This helps the airflow sensor 4 to accurately sense airflow changes in the third fluid channel 71 or the first fluid channel 13, and accurately sense airflow changes in the fourth fluid channel 72 or the second fluid channel 14. This helps the airflow sensor 4 to have a sensitivity and accuracy that is basically consistent with the sensitivity and accuracy of sensing airflow changes in the third fluid channel 71 or the first fluid channel 13 as it is in sensing airflow changes in the fourth fluid channel 72 or the second fluid channel 14.

[0158] In some embodiments, reference may be made to Figure 7 The airflow sensor 4b includes an electrode plate 44b, a first diaphragm 481b, and a second diaphragm 482b. The first diaphragm 481b is disposed between a first end 41b and the electrode plate 44b, and a first cavity 491b is formed between the first diaphragm 481b and the electrode plate 44b. The second diaphragm 482b is disposed between a second end 42b and the electrode plate 44b, and a second cavity 492b is formed between the second diaphragm 482b and the electrode plate 44b. Thus, the electrode plate 44b and the first diaphragm 481b cooperate to form a third capacitor, and the electrode plate 44b and the second diaphragm 482b cooperate to form a fourth capacitor.

[0159] The first end 41b has a first airflow inlet 45b that connects the third fluid channel 71 and the first diaphragm 481b, and the second end 42b has a second airflow inlet 46b that connects the fourth fluid channel 72 and the second diaphragm 482b. The first cavity 491b and the second cavity 492b are fluidly connected to the outside.

[0160] The first diaphragm 481b is configured to deform in response to changes in airflow in the third fluid channel 71, thereby altering the capacitance or associated electrical parameters between the first diaphragm 481b and the electrode 44b, causing the airflow sensor 4b to generate a first sensing signal.

[0161] The second diaphragm 482b is configured to deform in response to changes in airflow in the fourth fluid channel 72, thereby altering the capacitance or associated electrical parameters between the second diaphragm 482b and the electrode 44b, causing the airflow sensor 4 to generate a second sensing signal.

[0162] A first diaphragm 481b and a second diaphragm 482b are respectively disposed on opposite sides of the electrode plate 44b, such that the first diaphragm 482b and the electrode plate 44b form a third capacitor, and the second diaphragm 482b and the electrode plate 44b form a fourth capacitor. This helps the airflow sensor 4 to accurately sense airflow changes in the third fluid channel 71 or the first fluid channel 13, and accurately sense airflow changes in the fourth fluid channel 72 or the second fluid channel 14. This helps the airflow sensor 4 to have a sensitivity and accuracy that is basically consistent with the sensitivity and accuracy of sensing airflow changes in the third fluid channel 71 or the first fluid channel 13 as it is in sensing airflow changes in the fourth fluid channel 72 or the second fluid channel 14.

[0163] In some embodiments, reference may be made to Figure 1 The atomizing component 1 is disposed between the air intake 21 and the airflow sensor 4. Of course, the airflow sensor 4 can also be disposed between the air intake 21 and the atomizing component 1, or the airflow sensor 4 can also be disposed within the atomizing component 1.

[0164] In some embodiments, reference may be made to Figure 1 The air inlet 21 and the atomizing component 1 are arranged longitudinally, and the first atomizer 11 and the second atomizer 12 are arranged transversely.

[0165] The first end 41 / 41a / 41b and the second end 42 / 42a / 42b can also be arranged laterally to prevent leaked aerosol generation matrix or condensate formed by aerosol condensation from flowing onto the first end 41 / 41a / 41b and the second end 42 / 42a / 42b under the action of gravity, thereby helping to prevent the first airflow inlet 45 / 45a / 45b and the second airflow inlet 46 / 46a / 46b from being blocked.

[0166] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aerosol-generating device, characterized by, The aerosol-generating device comprises: an air inlet; an atomization assembly comprising a first atomizer for atomizing a first aerosol-generating substrate to generate a first aerosol and a second atomizer for atomizing a second aerosol-generating substrate to generate a second aerosol; a first fluid channel in communication with the first atomizer for transmitting the first aerosol to the air inlet; a second fluid channel in communication with the second atomizer for transmitting the second aerosol to the air inlet; an airflow sensor comprising a first end and a second end facing away from each other, the first end being in communication with the first fluid channel, the second end being in communication with the second fluid channel, the first fluid channel and the second fluid channel being selectively operable to be turned on or turned off, and the airflow sensor sensing airflow changes in the first fluid channel when the first fluid channel is turned on and sensing airflow changes in the second fluid channel when the second fluid channel is turned on; and a power supply assembly comprising a power source and a controller configured to control the power source to provide electrical power to the first atomizer or the second atomizer according to a sensing signal of the airflow sensor. The controller is configured to sense airflow changes in the first fluid channel through the first end when the first fluid channel is turned on to control the power source to provide electrical power to the first atomizer, and to sense airflow changes in the second fluid channel through the second end when the second fluid channel is turned on to control the power source to provide electrical power to the second atomizer.

2. The aerosol-generating device of claim 1, wherein, Alternatively, The controller is configured to disable the second atomizer from being activated when the first fluid channel is turned on, and to disable the first atomizer from being activated when the second fluid channel is turned on. The aerosol-generating device further comprises a mouthpiece assembly, and the air inlet is provided on the mouthpiece assembly; wherein 3. The aerosol-generating device of claim 1, wherein, The mouthpiece assembly is rotationally connected to the atomization assembly to selectively fluidly communicate the air inlet with one of the first fluid channel and the second fluid channel by rotation; or The mouthpiece assembly is configured to be detachably connected to the atomization assembly along a first azimuthal angle and a second azimuthal angle, and the air inlet is fluidly communicated with the first fluid channel when the mouthpiece assembly is connected to the atomization assembly along the first azimuthal angle, and the air inlet is fluidly communicated with the second fluid channel when the mouthpiece assembly is connected to the atomization assembly along the second azimuthal angle. The aerosol-generating device further comprises:

4. The aerosol-generating device of claim 1, wherein, a first air inlet fluidly communicating the first fluid channel with air outside, and the first air inlet is always in communication with the first end; and a second air inlet fluidly communicating the second fluid channel with air outside, and the second air inlet is always in communication with the second end. The aerosol-generating device further comprises a third fluid channel and a fourth fluid channel arranged separately; 5. The aerosol-generating device of claim 4, wherein, The first end is located in the third fluid channel, and the third fluid channel is used to fluidly communicate the first air inlet and the first atomizer: ​ The second end is located in the fourth fluid channel, and the fourth fluid channel is used for fluid communication between the second air inlet and the second atomizer.

6. The aerosol-generating device of claim 5, wherein, The airflow sensor comprises a differential pressure sensor configured to sense a first air pressure value of airflow in the third fluid channel through the first end and a second air pressure value of airflow in the fourth fluid channel through the second end. The controller is configured to control the power supply device to output electric power to the first atomizer or the second atomizer according to a difference between the first air pressure value and the second air pressure value.

7. The aerosol-generating device of claim 6, wherein, The controller is configured to control the power supply to output electric power to the first atomizer when the first air pressure value is less than the second air pressure value, and to output electric power to the second atomizer when the first air pressure value is greater than the second air pressure value. 8.The aerosol-generating device of claim 5, wherein, The airflow sensor comprises a diaphragm comprising a first surface and a second surface arranged opposite to each other, a first airflow inlet is formed on the first end to fluidly connect the third fluid channel and the first surface, and a second airflow inlet is formed on the second end to fluidly connect the fourth fluid channel and the second surface. A first electrode plate is arranged on the first end. The diaphragm is configured to deform when the airflow in the third fluid channel or the fourth fluid channel changes, so as to change a capacitance between the diaphragm and the first electrode plate or an electric parameter associated with the capacitance, so that the airflow sensor generates a sensing signal.

9. The aerosol-generating device of claim 8, wherein, The diaphragm is configured to deform towards the first end when the airflow in the third fluid channel is negative pressure or flows out, so that the airflow sensor generates a first sensing signal, and to deform towards the second end when the airflow in the fourth fluid channel is negative pressure or flows out, so that the airflow sensor generates a second sensing signal. 10.The aerosol-generating device of claim 8, wherein, A second electrode plate is arranged on the second end, the first surface is arranged to face the first electrode plate, and the second surface is arranged to face the second electrode plate. The capacitance between the diaphragm and the first electrode plate or the electric parameter associated with the capacitance is configured to change when the airflow in the third fluid channel changes, so that the airflow sensor generates a first sensing signal. The capacitance between the diaphragm and the second electrode plate or the electric parameter associated with the capacitance is configured to change when the airflow in the fourth fluid channel changes, so that the airflow sensor generates a second sensing signal. 11.The aerosol-generating device of claim 5, wherein, The airflow sensor comprises an electrode plate, a first diaphragm and a second diaphragm, the first diaphragm is arranged between the first end and the electrode plate, and a first cavity is formed between the first diaphragm and the electrode plate, the second diaphragm is arranged between the second end and the electrode plate, and a second cavity is formed between the second diaphragm and the electrode plate, the first cavity and the second cavity are in fluid communication with the outside; A first airflow inlet is formed on the first end to fluidly connect the third fluid channel and the first diaphragm, and a second airflow inlet is formed on the second end to fluidly connect the fourth fluid channel and the second diaphragm. The first diaphragm is configured to deform when air flow in the third fluid passage changes, thereby changing a capacitance between the first diaphragm and the plate or an electrical parameter associated with the capacitance, so that the air flow sensor generates a first sensing signal; The second diaphragm is configured to deform when air flow in the fourth fluid passage changes, thereby changing a capacitance between the second diaphragm and the plate or an electrical parameter associated with the capacitance, so that the air flow sensor generates a second sensing signal.

12. Aerosol-generating device according to any of claims 9-11, wherein The controller is configured to control the power supply to provide electrical power to the first atomizer according to the first sensing signal, and to control the power supply to provide electrical power to the second atomizer according to the second sensing signal. 13.The aerosol-generating device of claim 1, wherein, The first atomizer includes a first storage cavity for storing the first aerosol generating substrate, a first heating element for heating the first aerosol generating substrate to generate a first aerosol, and a first air passage tube at least partially surrounded by the first storage cavity, at least a portion of the first fluid passage being located in the first air passage tube; and / or The second atomizer includes a second storage cavity for storing the second aerosol generating substrate, a second heating element for heating the second aerosol generating substrate to generate a second aerosol, and a second air passage tube at least partially surrounded by the second storage cavity, at least a portion of the second fluid passage being located in the second air passage tube.

14. The aerosol-generating device of claim 13, wherein, The air inlet and the atomization assembly are arranged in a longitudinal direction; wherein The first end portion and the second end portion are arranged in a transverse direction; and / or The first atomizer and the second atomizer are arranged in a transverse direction. 15.The aerosol-generating device of claim 13, wherein, The atomization assembly is disposed between the air inlet and the air flow sensor.

16. The aerosol-generating device of claim 1, wherein, The first atomizer is electrically connected to the power supply by a wire; and / or The second atomizer is electrically connected to the power supply by a wire.

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