Aerosol generation device and method of directing flow to prevent aerosol backflow

Abstract

The application relates to the technical field of aerosol generating devices, in particular to an aerosol generating device capable of preventing aerosol backflow and a flow guiding method thereof. The aerosol generating device comprises a shell body internally provided with a liquid storage bin, a gas outlet channel and an atomization cavity; a heating assembly installed in the shell body; a base support fastened to the heating assembly; a base cover arranged at one end of the shell body close to the base support; an air inlet space formed between the base cover and the base support and communicated with the atomization cavity; and a flow guiding assembly arranged at one side of the base support close to the base cover and surrounding a pressure transmission channel in the air inlet space. The flow guiding assembly is used for bypassing the pressure transmission channel for the backflow liquid, guiding part of the backflow liquid out of the air inlet space, and guiding the inhaled external atmosphere into the atomization cavity along a specific direction. The flow guiding assembly arranged in the aerosol generating device can ensure smooth air intake and prevent the backflow liquid from flowing back to the electronic components.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol generating device, in particular to an aerosol generating device for preventing aerosol backflow and a flow guiding method thereof. BACKGROUND

[0002] At present, most electronic atomization devices adopt airflow sensor (microphone) starting mode. The microphone starting mode requires a pressure transmission channel, which is often directly connected with the atomization chamber of the electronic atomization device, resulting in that the liquid aerosol particles or condensed liquid backflowing from the user during use through the pressure transmission channel to the microphone and even the PCB and battery components, so that the electronic atomization device is misstarted or fails, and even causes device damage, battery bulging and explosion, and other safety problems.

[0003] In order to solve the above-mentioned problems existing in the use of electronic atomization devices, the prior art adopts the mode of separating the sensing airway and the suction airway, or setting an airflow check valve or a breathable liquid-proof film at the bottom inlet of the atomizer. However, the mode of separating the sensing airway and the suction airway has the problems of complex structure, high processing cost, poor taste, etc., and the setting of the airflow check valve or the breathable liquid-proof film at the bottom inlet of the atomizer also has the problem of increasing the cost of the device, and the problem of low sensitivity of the microphone starting. SUMMARY

[0004] The present application provides an aerosol generating device for preventing aerosol backflow and a flow guiding method thereof, which is used to solve the problem that the liquid aerosol particles or condensed liquid backflowing from the user during use of the existing electronic atomization device through the pressure transmission channel to the electronic components such as the microphone.

[0005] The present application provides an aerosol generating device for preventing aerosol backflow, comprising:

[0006] An outer shell is provided with a liquid storage compartment, an air outlet channel and an atomization chamber inside, and the air outlet channel and the atomization chamber are communicated;

[0007] A heating component is installed in the outer shell 1;

[0008] A base support is fastened to the heating component;

[0009] A base cover is arranged at one end of the outer shell close to the base support; an air inlet space is formed between the base cover and the base support; and the air inlet space is communicated with the atomization chamber;

[0010] A flow guide assembly is arranged on one side of the base support close to the base cover; the flow guide assembly encloses a pressure transmission channel in the air inlet space; the flow guide assembly is used to guide the returned liquid substance to bypass the pressure transmission channel, and then guide part of the returned liquid substance out of the air inlet space, and is also used to guide the inhaled external atmosphere into the atomization cavity along a specific direction.

[0011] In the scheme, a liquid storage compartment, an air outlet channel and an atomization cavity are arranged in the outer shell of the aerosol generating device, and the liquid storage compartment is used to store liquid. A heating assembly is installed in the outer shell to heat and atomize the liquid in the liquid storage compartment, and the atomized liquid aerosol particles enter the air outlet channel through the atomization cavity. A base support is also installed in the outer shell and is tightly connected with the heating assembly, and a base cover is arranged on one end of the outer shell close to the base support to form an air inlet space between the base cover and the base support, and the air inlet space is in communication with the external atmosphere. By arranging a flow guide assembly in the air inlet space of the aerosol generating device, the flow guide assembly not only plays a guiding role to make the air inlet smooth during normal suction, but also guides the airflow to bypass the pressure transmission channel during the return process, preventing the liquid aerosol particles or condensed liquid and other liquid substances from flowing back to the electronic components such as the microphone, and the liquid aerosol particles in the liquid substance will be discharged from the air inlet space with the airflow. The aerosol generating device only adds a flow guide assembly according to the principle of fluid mechanics, without changing the core structure of the original aerosol generating device, and the production is simple, the microphone has high sensitivity, and the airflow during suction is smoother, enhancing the taste experience.

[0012] In a possible design, the base support includes:

[0013] A support body is tightly connected with the heating assembly;

[0014] A partition plate is installed in the support body, and an airflow transition hole is arranged on the partition plate, and the air inlet space is in communication with the atomization cavity through the airflow transition hole;

[0015] The flow guide assembly is installed around the airflow transition hole.

[0016] In the scheme, the base support includes a support body and a partition plate, and the support body can realize the installation of the partition plate in the outer shell. The partition plate can isolate the liquid aerosol particles in the atomization cavity to prevent the liquid aerosol particles from leaking out of the bottom end of the outer shell. An airflow transition hole is arranged on the partition plate to make the air inlet space in communication with the atomization cavity, so that the external airflow can enter the atomization cavity through the airflow transition hole in the air inlet space during inhalation, and then carry the liquid aerosol particles in the atomization cavity into the air outlet channel. In addition, the airflow can also be discharged out of the aerosol generating device through the air outlet channel, the atomization cavity and the airflow transition hole during exhalation.

[0017] In a possible design, the baffle plate is provided with a first groove of micron level near the side of the atomization cavity.

[0018] In this scheme, the first groove of micron level provided near the side of the atomization cavity of the baffle plate can be used to adsorb and store the liquid aerosol particles remaining in the atomization cavity and the condensed liquid formed by deposition of large liquid aerosol particles, so as to prevent them from entering the electronic components such as the microphone.

[0019] In a possible design, the flow guide assembly comprises:

[0020] A flow guide plate is connected to the support body, and the flow guide plate encloses the pressure transmission channel in the air inlet space.

[0021] The pressure transmission channel has a channel opening, and the channel opening is aligned with the airflow transition hole.

[0022] In this scheme, the flow guide plate is arranged to enclose the pressure transmission channel with the channel opening in the air inlet space, and the airflow flows through the channel opening and the pressure transmission channel to provide power for starting the microphone. During the return process, a small part of the airflow from the airflow transition hole enters the pressure transmission channel through the channel opening to start the microphone, and the other part of the airflow carrying the liquid aerosol particles is guided by the flow guide plate to avoid the pressure transmission channel and is discharged from the air inlet space, so as to prevent a large amount of liquid aerosol particles from flowing back to the electronic components such as the microphone.

[0023] In a possible design, the flow guide assembly further comprises:

[0024] A flow guide column is connected to the baffle plate, and the flow guide column is arranged at the channel opening and forms a gap with the flow guide plate.

[0025] In this scheme, the flow guide column is arranged at the channel opening, and the flow guide column and the flow guide plate form a gap, so that the size of the channel opening is further reduced, the airflow enters the pressure transmission channel from the gap, and the liquid aerosol particles or the condensed liquid flowing back to the electronic components such as the microphone is further reduced without affecting the starting of the microphone.

[0026] In a possible design, the base cover is provided with a first air inlet hole communicating with the air inlet space.

[0027] The outer shell is provided with a second air inlet hole corresponding to the first air inlet hole.

[0028] The support body is provided with a third air inlet hole corresponding to the second air inlet hole.

[0029] In the scheme, the first air inlet hole is arranged on the base cover, the second air inlet hole is arranged on the outer shell, and the third air inlet hole is arranged on the support body, and the first air inlet hole, the second air inlet hole and the third air inlet hole are sequentially communicated with the air inlet space, thereby realizing the communication between the air inlet space and the external atmosphere.

[0030] In a possible design, the flow guide assembly further includes:

[0031] The electrode mounting seat is connected to the partition plate, and is mounted between the third air inlet hole and the airflow transition hole.

[0032] The aerosol generating device further includes an electrode mounted on the electrode mounting seat.

[0033] In the scheme, the electrode mounting seat is used for mounting the electrode, and also serves as a part of the flow guide assembly to guide the airflow in a specific direction. During inhalation, the external atmosphere enters the air inlet space through the third air inlet hole, and is guided by the electrode mounting seat to flow along the sidewall of the air inlet space, and then is guided by the flow guide plate and the flow guide column to flow along a specific direction to the airflow transition hole and then to the atomization cavity. In this way, the vortex phenomenon of the airflow near the airflow transition hole can be effectively reduced, the air inlet is smoother, and the airflow is more concentrated. Meanwhile, the cooperation of the electrode mounting seat with the flow guide plate and the flow guide column can guide the airflow to be discharged from the third air inlet hole to the outside of the aerosol generating device without flowing back to the pressure transmission channel.

[0034] In a possible design, the aerosol generating device further includes:

[0035] The heating element support is mounted in the outer shell through a support sealing element, and is fastened to the support body.

[0036] The porous heating element is connected to the heating element support through a heating element sealing element, and forms the atomization cavity with the support body. The porous heating element is in communication with the liquid storage compartment.

[0037] The porous heating element has an atomization surface, and the atomization surface is connected to the electrode.

[0038] In the scheme, the porous heating element is used for storing liquid and guiding the liquid to the atomization surface of the porous heating element through capillary action. Under the action of the electrode, the liquid on the atomization surface is heated and atomized to form fine aerosol particles, which then pass through the atomization cavity and the air outlet channel and finally enter the human body. The heating element support can fix and mount the porous heating element in the outer shell.

[0039] In a possible design, the liquid storage compartment surrounds the air outlet channel.

[0040] In this design, the liquid storage chamber is arranged around the gas outlet channel, making the internal structural layout of the outer shell more compact and reasonable, and giving the aerosol generator a larger liquid storage space.

[0041] One possible design also includes:

[0042] An oil-absorbing component is installed within the air intake space.

[0043] In this design, to prevent liquid aerosol particles that are not completely discharged through the air intake space and condensate that flows out of the atomization chamber or is formed by the deposition of large liquid aerosol particles from flowing back into the pressure transmission channel and related electronic components, an oil suction device is installed in the air intake space. The remaining liquid aerosol particles that are not completely discharged or the condensate formed are absorbed by the bottom oil suction device, further preventing liquid substances such as liquid aerosol particles or condensate from flowing back into the pressure transmission channel and related electronic components.

[0044] In one possible design, the oil-absorbing element is oil-absorbing cotton.

[0045] In one possible design, the oil-absorbing element is an oil-absorbing plate, and the oil-absorbing plate has a second groove at the micron level.

[0046] In this design, the second groove is micron-sized and can be used to adsorb and store any undischarged liquid aerosol particles or condensate, further preventing the liquid aerosol particles or condensate from flowing back into the pressure transmission channel and related electronic components.

[0047] In one possible design, the outer shell has an air intake port that is connected to the air outlet channel, and the end of the air outlet channel opposite to the air intake port is connected to the atomizing chamber.

[0048] In this design, by opening an air intake on the outer casing, the user can inhale and exhale through the air intake.

[0049] In one possible design, the aerosol generator further includes a power supply assembly connected to the end of the housing opposite to the air intake; the power supply assembly includes an airflow sensor, the airflow sensor being mounted in a position corresponding to the pressure transmission channel.

[0050] In this design, the power supply unit powers the electrodes to atomize the liquid reservoir. An airflow sensor within the power supply unit detects changes in airflow within the aerosol generator to activate it. The housing and power supply unit can be integrated or detachably connected, depending on specific design requirements.

[0051] This application also provides a method for preventing aerosol backflow, the method being implemented based on the aforementioned aerosol generating device, the method comprising:

[0052] The liquid in the storage tank is heated and atomized into liquid aerosol particles by the heating component and then enters the atomization chamber.

[0053] The aerosol generator draws in air, and the outside atmosphere enters the air intake space. Under the guidance of the flow guiding component, the air is introduced into the atomization chamber in a specific direction, and then carries the liquid aerosol particles in the atomization chamber into the air outlet channel, and finally into the human body.

[0054] The aerosol generator emits gas, and the returned liquid substance bypasses the pressure transmission channel under the guidance of the flow guiding component. The liquid aerosol particles in the returned liquid substance are discharged out of the air intake space with the airflow and finally to the outside of the aerosol generator. The condensate in the returned liquid substance is absorbed and stored by the oil suction component of the aerosol generator.

[0055] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0056] Figure 1 A three-dimensional structural schematic diagram of an aerosol generator for preventing aerosol backflow provided in this application in the first specific embodiment;

[0057] Figure 2 A schematic diagram of the exploded structure of an aerosol generator for preventing aerosol backflow provided in this application in the first specific embodiment;

[0058] Figure 3 A cross-sectional view at an angle of an aerosol generator for preventing aerosol backflow provided in this application;

[0059] Figure 4 A cross-sectional view from another angle of an aerosol generator for preventing aerosol backflow provided in this application;

[0060] Figure 5 A schematic diagram showing the airflow guided by the flow guide assembly during the intake of the aerosol generator provided in this application;

[0061] Figure 6 A schematic diagram illustrating the airflow guidance under the flow guide assembly during the exhalation of the aerosol generator provided in this application.

[0062] Figure 7 This is a three-dimensional structural diagram of the base bracket at one angle in an embodiment of this application;

[0063] Figure 8 This is a three-dimensional structural diagram of the base bracket from another angle in an embodiment of this application;

[0064] Figure 9 This is a cross-sectional view of the aerosol generating device provided in this application;

[0065] Figure 10 This is a top view of the oil-absorbing component in an embodiment of this application;

[0066] Figure 11 A three-dimensional structural schematic diagram of the aerosol generating device provided in this application in a second specific embodiment;

[0067] Figure 12 This is a vector diagram showing the airflow velocity during the intake process of the aerosol generator in this application.

[0068] Figure 13 A vector diagram showing the airflow velocity during the exhaust process of the aerosol generator of this application;

[0069] Figure 14 A vector diagram showing the airflow velocity during the intake process of an aerosol generator without a flow guide assembly.

[0070] Figure 15 A vector diagram showing the airflow velocity during the exhalation process of an aerosol generator without a flow guide assembly.

[0071] Figure label:

[0072] 1-Outer shell;

[0073] 100 - Second air intake;

[0074] 11-Air outlet channel;

[0075] 12-Atomizing chamber;

[0076] 13-Intake space;

[0077] 14-Liquid Storage Tank;

[0078] 15 - Intake port;

[0079] 2-Base bracket;

[0080] 21-Support body;

[0081] 210 - Third air intake;

[0082] 22-Partition;

[0083] 220 - Airflow transition hole;

[0084] 221 - First trench;

[0085] 3-Base cover;

[0086] 30 - First air intake port;

[0087] 4-Flow guiding components;

[0088] 40 - Pressure transmission channel;

[0089] 400-Channel Entrance;

[0090] 41-Blower plate;

[0091] 42-Guide column;

[0092] 43 - Electrode mounting base;

[0093] 5-electrode;

[0094] 6-Heating components;

[0095] 61-Heating element support;

[0096] 62- Bracket seal;

[0097] 63-Porous heating element;

[0098] 631 - Atomizing surface;

[0099] 64 - Heating element seal;

[0100] 7-Oil-absorbing parts;

[0101] 70 - Second trench;

[0102] 8-Sealing ring;

[0103] 9-Power supply components.

[0104] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0105] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0106] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0107] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0108] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0109] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0110] To prevent the recirculated liquid aerosol particles from the e-cigarette from flowing back onto the microphone, PCB, and even battery components during use, existing technologies generally employ the following two methods: ① Separating the sensing airway from the inhalation airway to prevent the recirculated liquid aerosol particles or condensate from flowing back to the microphone. This method completely isolates the microphone from the influence of liquid aerosol particles or condensate. However, this method requires an independent sensing airway for the e-cigarette, making the e-cigarette structure complex, larger, and more expensive to manufacture. Furthermore, if the independent microphone airway is not properly sealed, the airflow from the independent microphone airway can affect the flavor of the mainstream atomizing airway, resulting in a decreased flavor. ② Installing a one-way valve or a breathable, liquid-proof membrane at the bottom inlet of the atomizer. During normal inhalation, the one-way valve opens, allowing airflow; during recirculation, the one-way valve closes, preventing airflow. This method can isolate the influence of liquid aerosol particles or condensate on the entire battery rod element, but it adds a component, increasing the cost. At the same time, this component increases the airway suction resistance, requiring greater suction force to open the one-way valve, resulting in low microphone activation sensitivity and affecting the user experience.

[0111] To address the aforementioned technical problems in the prior art, this application provides an aerosol generator that prevents aerosol backflow. This aerosol generator can be used for atomizing liquid matrices such as e-liquids and pharmaceuticals, and can be applied in various technical fields such as medical and electronic cigarettes.

[0112] like Figures 1-2 As shown, the aerosol generator includes an outer shell 1, a base support 2, a heating element 6, a base cover 3, and a flow guiding component 4, combined with... Figures 3-4As shown, the outer casing 1 contains a liquid storage chamber 14, an air outlet channel 11, and an atomizing chamber 12, with the air outlet channel 11 and the atomizing chamber 12 connected. A heating element 6 is installed inside the outer casing 1. A base bracket 2 is installed inside the outer casing 1 and securely connected to the heating element 6. A base cover 3 covers the end of the outer casing 1 near the base bracket 2. An air intake space 13 is formed between the base cover 3 and the base bracket 2. The air intake space 13 is connected to the atomizing chamber 12. Figure 5 As shown, the flow guiding component 4 is disposed on the side of the base bracket 2 near the base cover 3. The flow guiding component 4 forms a pressure transmission channel 40 within the air intake space 13. The flow guiding component 4 is used to guide the regurgitated liquid material around the pressure transmission channel 40, and then to guide part of the regurgitated liquid material out of the air intake space 13. It is also used to guide the inhaled outside air into the atomizing chamber 12 in a specific direction.

[0113] In this embodiment, a liquid storage chamber 14, an air outlet channel 11, and an atomization chamber 12 are provided inside the outer casing 1 of the aerosol generator. The liquid storage chamber 14 is used to store liquid and can be made of metals such as aluminum and stainless steel, or plastic, as long as it can store the liquid to be atomized without reacting with it and causing it to deteriorate. The shape and size of the liquid storage chamber 14 are not limited and can be designed according to needs. A heating element 6 is installed inside the outer casing 1 to heat and atomize the liquid in the liquid storage chamber 14. The atomized liquid aerosol particles enter the air outlet channel 11 through the atomization chamber 12. A base bracket 2, which is fastened to the heating element 6, is also installed inside the outer casing 1, and a base cover 3 is placed on the end of the outer casing 1 near the base bracket 2, so that an air intake space 13 is formed between the base cover 3 and the base bracket 2, and the air intake space 13 is in communication with the outside atmosphere. By installing a flow guide component 4 within the air intake space 13 of the aerosol generator, not only does the flow guide component 4 ensure smooth air intake during normal suction, but also during regurgitation, it guides the airflow to bypass the pressure transmission channel, preventing liquid aerosol particles or condensate from flowing back to the microphone and other electronic components. The liquid aerosol particles in the liquid are then discharged from the air intake space 13 with the airflow. This aerosol generator simply adds the flow guide component 4 based on fluid dynamics principles, without altering the core structure of the original aerosol generator. It is simple to manufacture, has high microphone activation sensitivity, and also makes the airflow during suction smoother, enhancing the taste experience.

[0114] In another specific embodiment, such as Figure 3 , Figure 7 and Figure 8 As shown, the base bracket 2 includes a bracket body 21 and a partition plate 22, as referenced. Figure 3The bracket body 21 is securely connected to the heating element 6 and sealed to the outer casing 1 via a sealing ring 8. A partition 22 is installed inside the bracket body 21. An airflow transition hole 220 is provided on the partition 22, through which the air intake space 13 communicates with the atomizing chamber 12. A flow guiding assembly 4 is installed around the airflow transition hole 220.

[0115] In this embodiment, the base support 2 includes a support body 21 and a partition 22. The support body 21 enables the partition 22 to be installed inside the outer shell 1. The partition 22 can isolate the liquid aerosol particles in the atomizing chamber 12, preventing the liquid aerosol particles from leaking out from the bottom of the outer shell 1. An airflow transition hole 220 is provided on the partition 22 to connect the air intake space 13 and the atomizing chamber 12. This facilitates the entry of external airflow into the atomizing chamber 12 through the air intake space 13 and the airflow transition hole 220 during inhalation, and then carries the liquid aerosol particles in the atomizing chamber 12 into the air outlet channel 11. It also facilitates the discharge of airflow from the air outlet channel 11 and the atomizing chamber 12 through the airflow transition hole 220 during exhalation.

[0116] In one specific embodiment, refer to Figure 8 The partition 22 has a first groove 221 of micron size on the side near the atomizing chamber 12.

[0117] In this embodiment, by opening a micron-sized first groove 221 on the side of the partition 22 near the atomizing cavity 12, it can be used to adsorb some of the liquid aerosol particles stored in the atomizing cavity 12 and the condensate formed by the deposition of large liquid aerosol particles, preventing them from entering electronic components such as microphones.

[0118] In another specific embodiment, refer to Figure 5 and Figure 7 The airflow guiding assembly 4 includes a guide plate 41, which is connected to the support body 21. The guide plate 41 forms a pressure transmission channel 40 within the air intake space 13. The pressure transmission channel 40 has a channel opening 400, which is aligned with the airflow transition hole 220.

[0119] In this embodiment, a guide plate 41 is provided to form a pressure transmission channel 40 with an opening 400 within the air intake space 13. The airflow passes through the opening 400 and flows through the pressure transmission channel 40 to provide power for microphone activation. During the backflow process, a small portion of the airflow from the airflow transition hole 220 enters the pressure transmission channel 40 through the opening 400 for microphone activation. The majority of the airflow carrying liquid substances is guided by the guide plate 41 to avoid the pressure transmission channel 40. Liquid aerosol particles in the liquid substance are discharged from the air intake space 13 with the airflow, preventing a large number of liquid aerosol particles from flowing back to the microphone and other electronic components.

[0120] In one specific embodiment, refer to Figure 5 and Figure 7 The flow guiding assembly 4 also includes a flow guiding column 42, which is connected to the partition plate 22. The flow guiding column 42 is installed at the channel opening 400 and forms a gap between it and the flow guiding plate 41.

[0121] In this embodiment, by setting a guide column 42 at the channel opening 400 and forming a gap between the guide column 42 and the guide plate 41, the size of the channel opening 400 can be further reduced, allowing the airflow to enter the pressure transmission channel 40 through the gap. This further reduces the backflow of liquid substances such as liquid aerosol particles or condensate to electronic components such as the microphone while ensuring that the microphone startup is not affected.

[0122] In another specific embodiment, such as Figure 9 As shown, the base cover 3 has a first air intake 30 that communicates with the air intake space 13. The outer shell 1 has a second air intake 100 at a position corresponding to the first air intake 30. The bracket body 21 has a third air intake 210 at a position corresponding to the second air intake 100.

[0123] In this embodiment, a first air inlet 30 is opened on the base cover 3, a second air inlet 100 is opened on the outer shell 1, and a third air inlet 210 is opened on the bracket body 21. The first air inlet 30, the second air inlet 100 and the third air inlet 210 are connected to the air intake space 13 in sequence, thereby realizing the connection between the air intake space 13 and the outside atmosphere.

[0124] In one specific embodiment, refer to Figure 5 , Figure 7 , Figure 9 The flow guiding assembly 4 also includes an electrode mounting base 43, which is connected to the partition plate 22. The electrode mounting base 43 is installed between the third air inlet 210 and the airflow transition hole 220. The aerosol generator also includes an electrode 5, which is mounted on the electrode mounting base 43.

[0125] In this embodiment, the electrode mounting base 43 serves two purposes: firstly, it is used for mounting the electrode 5; secondly, it acts as part of the flow guiding assembly 4, providing directional flow guidance. During the intake process, the outside atmosphere enters the intake space 13 through the third air inlet 210. Under the guidance of the electrode mounting base 43, the air is not directly guided to the airflow transition hole 220, but rather along the side wall of the intake space 13. Then, guided by the flow guide plate 41 and the flow guide column 42, the airflow is guided in a specific direction to the airflow transition hole 220 and enters the atomization chamber 12. This effectively reduces the vortex phenomenon of airflow near the airflow transition hole 220, making the intake smoother and the airflow more concentrated. At the same time, the coordinated flow guidance of the electrode mounting base 43 with the flow guide plate 41 and the flow guide column 42 ensures that the regurgitated liquid material hardly flows back to the pressure transmission channel 40. The liquid aerogel particles in the liquid material are directly guided out of the third air inlet 210 and discharged outside the aerosol generator.

[0126] In another specific embodiment, such as Figures 2-4 The heating element 6 also includes a heating element support 61 and a porous heating element 63. The heating element support 61 is installed inside the outer casing 1 via a support seal 62. The heating element support 61 is securely connected to the support body 21. The porous heating element 63 is connected to the heating element support 61 via a heating element seal 64. An atomizing chamber 12 is formed between the porous heating element 63 and the support body 21. The porous heating element 63 communicates with the liquid storage tank 14. The porous heating element 63 has an atomizing surface 631, which is connected to the electrode 5.

[0127] In this embodiment, the porous heating element 63 is used to store liquid and guide the liquid to the atomizing surface 631 of the porous heating element 63 through capillary action. Under the action of the electrode 5, the liquid on the atomizing surface 631 is heated and atomized to form fine aerosol particles, which then pass through the atomizing chamber 12 and the air outlet channel 11, and finally enter the human body. The heating element support 61 enables the porous heating element 63 to be fixedly installed in the outer shell 1.

[0128] In one specific embodiment, such as Figures 2-4 The liquid storage tank 14 is arranged around the gas outlet channel 11.

[0129] In this embodiment, the liquid storage tank 14 is arranged around the gas outlet channel 11, making the internal structural layout of the outer shell 1 more compact and reasonable, and giving the aerosol generator a larger liquid storage space.

[0130] In another specific embodiment, such as Figures 2-4 As shown, the aerosol generator also includes an oil suction component 7, which is installed in the air intake space 13.

[0131] In this embodiment, in order to prevent liquid aerosol particles that are not completely discharged through the air intake space 13 and condensate that flows out of the atomization chamber or is formed by the deposition of large liquid aerosol particles from flowing back into the pressure transmission channel 40 and related electronic components, an oil suction component 7 is provided in the air intake space 13. The remaining liquid aerosol particles that are not completely discharged or the condensate formed are absorbed by the bottom oil suction component 7, which further prevents liquid substances such as liquid aerosol particles or condensate from flowing back into the pressure transmission channel 40 and related electronic components.

[0132] Specifically, the oil-absorbing component 7 can be oil-absorbing cotton.

[0133] Oil-absorbing component 7 can also be an oil-absorbing plate, such as... Figure 10 As shown, the oil-absorbing plate has a second groove 70 at the micrometer level. The second groove 70 is at the micrometer level and can be used to adsorb and store undischarged liquid aerosol particles or condensate, further preventing liquid substances such as liquid aerosol particles or condensate from flowing back into the pressure transmission channel 40 and related electronic components.

[0134] In one specific embodiment, an air intake 15 is provided on the outer shell 1, the air intake 15 is connected to the air outlet channel 11, and the end of the air outlet channel 11 opposite to the air intake 15 is connected to the atomizing chamber 12.

[0135] In this embodiment, by opening an air inlet 15 on the outer shell 1, the user can inhale and exhale through the air inlet 15.

[0136] Specifically, such as Figure 11 As shown, the aerosol generator also includes a power supply assembly 9, which is connected to the end of the housing 1 opposite to the intake port 15. The power supply assembly 9 includes an airflow sensor, the installation position of which corresponds to the pressure transmission channel 40.

[0137] In this embodiment, the power supply component 9 supplies power to the electrode 5 to atomize the liquid reservoir. The airflow sensor in the power supply component 9 detects changes in airflow within the aerosol generator to activate the aerosol generator. The housing 1 and the power supply component 9 can be integrally formed or detachably connected, depending on specific requirements.

[0138] The aerosol generator provided in this embodiment ensures smooth air intake during inhalation and guides the airflow during exhalation to discharge a large amount of residual liquid aerosol particles from the intake space 13, preventing the liquid aerosol particles from flowing back to electronic components, such as... Figure 12 and Figure 13 These are vector diagrams showing the airflow velocity during the inhalation and exhalation processes of the aerosol generator in this application, as shown below. Figure 14 and Figure 15These are vector diagrams showing the airflow velocity during the inhalation and exhalation processes of an aerosol generator without the flow guide component 4 installed.

[0139] from Figure 12 and Figure 14 In comparison, without the flow guide component 4, the airflow generates a large vortex as it passes through the pressure transmission channel 40 and near the airflow transition hole 220. However, with the flow guide component 4, almost no vortex is generated, and the airflow passes smoothly through the airflow transition hole 220. Therefore, the presence of the flow guide component 4 in this application makes the air intake smoother and the airflow more concentrated.

[0140] from Figure 13 and Figure 15 In comparison, without the flow guide component 4, during the exhalation process, the re-exhaled airflow easily flows back to the microphone and other electronic components through the pressure transmission channel 40. However, with the flow guide component 4, the re-exhaled airflow hardly flows back to the pressure transmission channel 40 and is directly discharged from the air inlet to the outside of the aerosol generator. Therefore, the presence of the flow guide component 4 can prevent liquid aerosol particles or condensate from flowing back into the pressure transmission channel 40 and related electronic components.

[0141] This application embodiment also provides a method for preventing aerosol backflow. The method is based on the aforementioned aerosol generating device and includes:

[0142] The liquid in the storage chamber 14 is heated and atomized into liquid aerosol particles by the heating component 6 and enters the atomization chamber 12.

[0143] When the aerosol generator draws in air, the outside atmosphere enters the intake space 13 and is guided into the atomization chamber 12 in a specific direction by the flow guiding component 4. Then, it carries the liquid aerosol particles in the atomization chamber 12 into the exhaust channel 11 and is finally introduced into the human body.

[0144] When the aerosol generator discharges air, the discharged liquid material bypasses the pressure transmission channel 40 under the guidance of the flow guiding component 4. The liquid aerosol particles in the discharged liquid material are discharged out of the air intake space 13 with the airflow and finally to the outside of the aerosol generator. The condensate in the discharged liquid material is absorbed and stored by the oil suction component 7 of the aerosol generator.

[0145] Specifically, the liquid in the storage tank 14 enters the atomizing surface 631 of the porous heating element 63 of the heating component 6, and the power supply component 9 supplies power to the electrode 5. Under the action of the electrode 5, the liquid on the atomizing surface 631 is heated and atomized to form fine aerosol particles, which then enter the atomizing chamber 12.

[0146] When the aerosol generator draws in air through the intake port 15, the outside air enters the intake space 13 sequentially through the first air inlet 30 of the base cover 3, the second air inlet 100 of the outer shell 1, and the third air inlet 210 of the support body 21. It is first guided by the electrode mounting base 43 of the flow guiding assembly 4, then by the flow guiding plate 41 and the flow guiding column 42 of the flow guiding assembly 4, and then flows along... Figure 5 The air is introduced into the atomizing chamber 12 through the airflow transition hole 220 in a specific direction, and then enters the air outlet channel 11 together with the aerosol particles in the atomizing chamber 12, and finally enters the human body through the inhalation port 15.

[0147] When the aerosol generator exhales through the intake port 15, the exhaled liquid substance enters the intake space 13 through the airflow transition hole 220, and flows along... Figure 6 As shown, the liquid aerosol particles in the returned liquid material are first guided by the guide plate 41 and guide column 42 of the guide assembly 4, bypassing the pressure transmission channel 40. The liquid aerosol particles in the returned liquid material are then guided by the airflow through the electrode mounting base 43 of the guide assembly 4. They are then sequentially discharged from the third air inlet 210 of the support body 21, the second air inlet 100 of the outer shell 1, and the first air inlet 30 of the base cover 3 to the outside of the aerosol generator. Finally, the condensate in the returned liquid material is absorbed and stored by the oil suction component 7 of the aerosol generator.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An aerosol generator for preventing aerosol backflow, characterized in that, include: The outer shell (1) is provided with a liquid storage chamber (14), an air outlet channel (11) and an atomizing chamber (12) inside the outer shell (1), and the air outlet channel (11) and the atomizing chamber (12) are connected. A heating element (6) is installed inside the outer casing (1); The base bracket (2) is securely connected to the heating component (6); A base cover (3) is installed on one end of the outer shell (1) near the base support (2); an air intake space (13) is formed between the base cover (3) and the base support (2); the air intake space (13) is connected to the atomizing chamber (12); A flow guide assembly (4) is disposed on the side of the base bracket (2) near the base cover (3); the flow guide assembly (4) forms a pressure transmission channel (40) in the air intake space (13); the flow guide assembly (4) is used to guide the regurgitated liquid substance around the pressure transmission channel (40), and then to guide part of the regurgitated liquid substance out of the air intake space (13), and is also used to guide the inhaled outside air into the atomizing chamber (12) in a specific direction; The base support (2) includes a support body (21) and a partition (22); the support body (21) is fastened to the heating component (6); the partition (22) is installed inside the support body (21); the partition (22) is provided with an airflow transition hole (220), and the air intake space (13) is connected to the atomizing chamber (12) through the airflow transition hole (220); The flow guiding component (4) is installed around the airflow transition hole (220); The flow guiding assembly (4) includes a flow guiding plate (41) connected to the support body (21); the flow guiding plate (41) forms the pressure transmission channel (40) in the air intake space (13); the pressure transmission channel (40) has a channel opening (400) aligned with the airflow transition hole (220).

2. The aerosol generating device as described in claim 1, characterized in that, The partition (22) has a first groove (221) at the micron level on the side near the atomizing chamber (12).

3. The aerosol generating device as described in claim 1, characterized in that, The flow guiding component (4) also includes: A flow guide column (42) is connected to the partition plate (22); the flow guide column (42) is installed at the channel opening (400) and a gap is formed between it and the flow guide plate (41).

4. The aerosol generating device as described in claim 1, characterized in that, The base cover (3) is provided with a first air inlet (30) that communicates with the air inlet space (13); A second air inlet (100) is provided on the outer shell (1) at a position corresponding to the first air inlet (30); The bracket body (21) has a third air inlet (210) at a position corresponding to the second air inlet (100).

5. The aerosol generating device as described in claim 4, characterized in that, The flow guiding component (4) also includes: An electrode mounting base (43) is connected to the partition plate (22); the electrode mounting base (43) is installed between the third air inlet (210) and the airflow transition hole (220); The aerosol generating device further includes an electrode (5), which is mounted on the electrode mounting base (43).

6. The aerosol generating apparatus as described in claim 5, characterized in that, The heating component (6) includes: The heating element bracket (61) is installed inside the outer shell (1) through the bracket seal (62); the heating element bracket (61) is fastened to the bracket body (21); A porous heating element (63) is connected to the heating element support (61) via a heating element seal (64); an atomizing chamber (12) is formed between the porous heating element (63) and the support body (21); the porous heating element (63) is connected to the liquid storage tank (14); The porous heating element (63) has an atomizing surface (631) which is connected to the electrode (5).

7. The aerosol generating apparatus as described in claim 6, characterized in that, The liquid storage tank (14) is arranged around the gas outlet channel (11).

8. The aerosol generating device as described in claim 1, characterized in that, Also includes: An oil suction component (7) is installed in the air intake space (13).

9. The aerosol generating apparatus as described in claim 8, characterized in that, The oil-absorbing component (7) is oil-absorbing cotton.

10. The aerosol generating apparatus as described in claim 8, characterized in that, The oil-absorbing component (7) is an oil-absorbing plate, and the oil-absorbing plate has a second groove (70) at the micron level.

11. The aerosol generating apparatus as described in claim 1, characterized in that, An air intake (15) is provided on the outer shell (1), the air intake (15) is connected to the air outlet (11), and the end of the air outlet (11) opposite to the air intake (15) is connected to the atomizing chamber (12).

12. The aerosol generating apparatus as described in claim 11, characterized in that, The aerosol generator also includes a power supply assembly (9), which is connected to the end of the housing (1) away from the air intake (15); the power supply assembly (9) includes an airflow sensor, the installation position of which corresponds to the pressure transmission channel (40).

13. A method for preventing aerosol backflow, characterized in that, The flow diversion method is implemented based on the aerosol generating device according to any one of claims 1-12, and the flow diversion method includes: The liquid in the storage tank (14) is heated and atomized into liquid aerosol particles by the heating component (6) and enters the atomization chamber (12); The aerosol generator draws in air, and the outside atmosphere enters the air intake space (13). Under the guidance of the flow guide component (4), the air is introduced into the atomizing chamber (12) along a specific direction. Then, it carries the liquid aerosol particles in the atomizing chamber (12) into the air outlet channel (11) and finally into the human body. The aerosol generator expels air, and the returned liquid substance bypasses the pressure transmission channel (40) under the guidance of the flow guide component (4). The liquid aerosol particles in the returned liquid substance are discharged out of the air intake space (13) with the airflow and finally to the outside of the aerosol generator. The condensate in the returned liquid substance is absorbed and stored by the oil suction component (7) of the aerosol generator.

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