Airflow regulating valve and electronic atomizer

Abstract

The application discloses an airflow regulating valve and an electronic atomizer. The airflow regulating valve comprises a valve seat and at least two valve petals. The valve seat is provided with a channel. The at least two valve petals are arranged in the channel in a circumferential direction of the channel. The valve petals comprise bulging parts and sheet parts. One end of the sheet part is connected to a wall of the channel. The other end of the sheet part is connected to the bulging part and faces the center of the channel. The deformation difficulty of the bulging part is greater than that of the sheet part. In a resting state of the airflow regulating valve, all the sheet parts are in an initial shape, and all the bulging parts are close to each other. In a working state of the airflow regulating valve, at least one sheet part is bent in a direction away from the air inlet end of the channel, and at least one bulging part moves away from other bulging parts. The flow area of the channel in the working state is greater than that in the resting state. The airflow regulating valve can continuously adjust the air inlet amount.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and in particular to an airflow regulating valve and an electronic atomizer. Background Technology

[0002] In electronic atomizer products, the draw resistance design directly affects the user's vaping experience. Existing products mainly adopt a fixed draw resistance design, and there are two typical solutions depending on the product type, both of which have obvious defects in use:

[0003] Firstly, traditional e-cigarette products use a fixed small-opening air intake structure to create corresponding draw resistance. This design is only suitable for light vaping. When users take a heavy vape, the fixed air intake opening results in insufficient airflow, causing a noticeable "holding back" sensation. Furthermore, the airflow cannot keep up with the vaping demand in time, severely affecting the smoothness of vaping and resulting in a poor vaping experience.

[0004] Secondly, traditional e-cigarette products use a fixed, large-opening air intake structure to match the corresponding draw resistance. This design is only suitable for heavy vaping. When users take light vaping, the excessive air intake creates a "blank" feeling, and the force of light vaping is insufficient to effectively trigger the airflow sensor of the e-cigarette, easily causing the e-cigarette to fail to start, which also results in a poor vaping experience.

[0005] Furthermore, even if some existing products have added vapor adjustment switches, they are essentially still preset fixed-level adjustments, meaning that one draw resistance value corresponds to only one specific vaping method. Users cannot flexibly adjust the draw resistance according to their own real-time vaping habits. As a result, existing designs, regardless of whether they have vapor adjustment switches, cannot adapt to the diverse vaping needs of different users, making it difficult to achieve a good experience for both light and heavy vaping, thus limiting the usability and adaptability of electronic atomizers. Utility Model Content

[0006] The main objective of this application is to provide an airflow regulating valve that solves the technical problem that existing airflow regulating valves have poor adaptability and cannot meet both light and heavy suction requirements.

[0007] To achieve the above objectives, the first aspect of this application proposes an airflow regulating valve for use in an electronic atomizer. The airflow regulating valve is made of an elastic material and includes:

[0008] A valve seat having a through-channel, the channel having an inlet end from which gas flows into the channel; and

[0009] At least two valve discs are integrally formed with the valve seat. The at least two valve discs are disposed in the channel and arranged circumferentially along the channel. Each valve disc includes an enlarged portion and a thin plate portion. One end of the thin plate portion is connected to the wall of the channel, and the other end of the thin plate portion faces the center of the channel and is connected to the enlarged portion. The deformation difficulty of the enlarged portion is greater than that of the thin plate portion.

[0010] The airflow regulating valve has a resting state and an active state. In the resting state, all the thin sheet portions are in their initial shape, all the enlarged portions are close to each other, and the flow cross-sectional area of ​​the channel is A. In the active state, at least one of the thin sheet portions bends away from the air inlet end, and at least one of the enlarged portions moves away from the other enlarged portions. The flow cross-sectional area of ​​the channel is B, and B is greater than A.

[0011] Optionally, A is greater than 0.

[0012] Optionally, in the resting state, at least one of the enlarged portions is spaced apart from the other enlarged portions.

[0013] Optionally, the sheet portion is sheet-shaped, and the plane containing the sheet portion forms an angle of 90±20° with the length direction of the channel.

[0014] Optionally, the side of the valve disc facing the air intake end is inclined in a direction away from the air intake end to form a guide surface, and the guide surface extends from the middle of the valve disc to the end of the valve disc that is not connected to the channel.

[0015] Optionally, the channel is cylindrical, and the number of valve discs is two, with the two valve discs arranged symmetrically on both sides of the axis of the channel.

[0016] Optionally, the enlarged portion is block-shaped; the volume of the enlarged portion is greater than the volume of the sheet portion, and / or the weight of the enlarged portion is greater than the weight of the sheet portion.

[0017] Optionally, the valve seat further comprises a through-hole forming a sensing channel, the sensing channel being spaced apart from the channel, the sensing channel being used to mount the airflow sensor of the electronic atomizer, and the airflow regulating valve comprising:

[0018] A liquid-resistant and gas-permeable membrane is attached to the gas outlet end of the sensing channel.

[0019] Optionally, the liquid-resistant and gas-permeable membrane and the valve seat are integrally manufactured using an in-mold insert injection molding process.

[0020] The second aspect of this application provides an electronic atomizer, which includes a main body and the aforementioned airflow regulating valve. An air passage is formed inside the main body, and the airflow regulating valve is disposed inside the main body. The passage communicates with the air passage.

[0021] Alternatively, the electronic atomizer includes a main body, an airflow sensor, and the aforementioned airflow regulating valve including the sensing channel. An airflow channel is formed inside the main body, the airflow regulating valve is located inside the main body, the channel and the sensing channel are both connected to the airflow channel, and the airflow sensor is installed inside the sensing channel.

[0022] This application's airflow regulating valve achieves continuous, stepless adjustment of the air intake cross-section simply by driving the coordinated deformation of the thin plate section and the expansion section through changes in airflow pressure. This automatically adapts to the user's real-time changes in suction force, meeting personalized and dynamic suction needs. The thin plate section is responsible for flexible deformation to adapt to different suction forces, while the expansion section, through its high rigidity, prevents the valve disc from being damaged or deformed due to long-term repeated deformation or high-pressure airflow impact, extending the valve disc's service life. Simultaneously, the expansion section limits the maximum deformation of the valve disc, maintaining airflow stability. The valve disc is arranged circumferentially along the channel, and combined with the structural characteristics of the expansion section, ensures uniform circumferential airflow during airflow regulation, avoiding localized airflow turbulence and further improving suction smoothness. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the resting state of an embodiment of the airflow regulating valve of this application;

[0025] Figure 2 for Figure 1 A cross-sectional view of the resting state of the embodiment shown;

[0026] Figure 3 for Figure 1 The illustrated embodiment is shown in a perspective view of its active state.

[0027] Figure 4 for Figure 1 A cross-sectional view of the active state of the embodiment shown.

[0028] Explanation of icon numbers:

[0029]

[0030]

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] 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.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0035] This application proposes an airflow regulating valve, which may include a valve seat and at least two valve discs. The valve seat may have a through-hole channel with an inlet end, from which gas flows into the channel. The at least two valve discs may be integrally formed with the valve seat, and are disposed within the channel, arranged circumferentially along the channel. Each valve disc may include an enlarged portion and a thin plate portion. One end of the thin plate portion is connected to the wall of the channel, and the other end faces the center of the channel and is connected to the enlarged portion. The enlarged portion is more difficult to deform than the thin plate portion. The airflow regulating valve has a resting state and an active state. In the resting state, all the thin plate portions are in their initial form, all the enlarged portions are close to each other, and the flow cross-sectional area of ​​the channel is A. In the active state, at least one thin plate portion bends away from the inlet end, and at least one enlarged portion moves away from the other enlarged portions, and the flow cross-sectional area of ​​the channel is B, where B is greater than A.

[0036] This application's airflow regulating valve achieves continuous, stepless adjustment of the air intake cross-section simply by driving the coordinated deformation of the thin plate section and the expansion section through changes in airflow pressure. This automatically adapts to the user's real-time changes in suction force, meeting personalized and dynamic suction needs. The thin plate section is responsible for flexible deformation to adapt to different suction forces, while the expansion section, through its high rigidity, prevents the valve disc from being damaged or deformed due to long-term repeated deformation or high-pressure airflow impact, extending the valve disc's service life. Simultaneously, the expansion section limits the maximum deformation of the valve disc, maintaining airflow stability. The valve disc is arranged circumferentially along the channel, and combined with the structural characteristics of the expansion section, ensures uniform circumferential airflow during airflow regulation, avoiding localized airflow turbulence and further improving suction smoothness.

[0037] Please combine Figures 1 to 4 The following will mainly describe the specific structure of the airflow regulating valve 10.

[0038] The airflow regulating valve 10 of this application is made of an elastic material, specifically silicone, plastic, and / or rubber. The airflow regulating valve 10 may be generally seat-shaped.

[0039] The airflow regulating valve 10 of this application includes a valve seat 100, through which a channel 110 is formed. The channel 110 has an air inlet end 111, and gas flows into the channel 110 from the air inlet end 111. The channel 110 may be generally cylindrical, for example, cylindrical.

[0040] The airflow regulating valve 10 of this application includes at least two valve discs 200, which are integrally formed with the valve seat 100. The at least two valve discs 200 are disposed within a channel 110 and are arranged circumferentially along the channel 110. Each valve disc 200 includes an enlarged portion 210 and a thin plate portion 220. One end of the thin plate portion 220 is connected to the wall of the channel 110, and the other end of the thin plate portion 220 faces the center of the channel 110 and is connected to the enlarged portion 210. The enlarged portion 210 is more difficult to deform than the thin plate portion 220. In other words, one end of the valve disc 200 is a connecting end connected to the channel 110, and the other end of the valve disc 200 is a free end located near the center of the channel 110.

[0041] The airflow regulating valve 10 has a resting state and an active state. Please refer to [link / reference]. Figure 1 and Figure 2 In the resting state, all the sheet portions 220 are in their initial shape, meaning that none of the sheet portions 220 have deformed, all the enlarged portions 210 are close to each other, and the flow cross-sectional area of ​​the channel 110 is A. Please refer to... Figure 3 and Figure 4In the active state, at least one of the thin sheet portions 220 bends toward the direction away from the air intake end 111, and at least one of the enlarged portions 210 moves away from the other enlarged portions 210, that is, at least two valve discs 200 open to block the passage 110, the flow cross-sectional area of ​​the passage 110 is B, and B is greater than A (the flow cross-sectional area increases when the passage 110 is open).

[0042] The airflow regulating valve 10 of this application achieves continuous, stepless adjustment of the air intake cross-section by driving the coordinated deformation of the thin plate portion 220 and the expansion portion 210 solely through changes in airflow pressure. This automatically adapts to the user's real-time changes in suction force, meeting personalized and dynamic suction needs. The thin plate portion 220 is responsible for flexible deformation to adapt to different suction forces, while the expansion portion 210, through its high rigidity, prevents the valve disc 200 from being damaged or deformed due to long-term repeated deformation or high-pressure airflow impact, extending the service life of the valve disc 200. At the same time, the expansion portion 210 can limit the maximum deformation of the valve disc 200, maintaining air intake stability. The valve disc 200 is arranged circumferentially along the channel 110. Combined with the structural characteristics of the expansion portion 210, this ensures uniform air intake around the channel 110 during airflow regulation, avoiding local airflow turbulence and further improving the smoothness of suction.

[0043] Please see Figure 1 and Figure 2 In the resting state, A is greater than 0, meaning that when the user is not inhaling or the inhalation force is too weak to trigger deformation of at least two valve discs 200, at least two valve discs 200 are not completely closed in the channel 110. When the user is not inhaling, the valve discs 200 not completely closing the channel 110 maintains a certain basic air intake within the channel 110 (i.e., reserving an initial air intake gap), avoiding the problem of a sudden increase in initial draw resistance caused by a complete closure of the channel 110. This ensures that the user does not need to overcome additional resistance in the closed state when inhaling again, resulting in smoother initial inhalation and lowering the inhalation start threshold. For scenarios with weak inhalation force, even if the valve discs 200 do not deform, the unclosed channel 110 can still provide sufficient airflow: on the one hand, it avoids insufficient airflow during light inhalation due to the closure of the channel 110, preventing discomfort from empty inhalation or abnormally increased draw resistance; on the other hand, sufficient basic airflow can effectively trigger the airflow sensor of the electronic atomizer, solving the problem of not starting due to insufficient airflow during light inhalation of traditional large-volume vaporizers, and improving the reliability of light inhalation. From "no suction" to "weak suction" and then to "strong suction", the valve 200 gradually deforms as the airflow pressure increases from the unclosed channel 110 state, and the air intake is continuously adjusted accordingly. This makes the change in suction resistance present a smooth transition characteristic, avoiding the abrupt feeling of sudden changes in suction resistance in traditional fixed suction resistance or gear adjustment, making the switching between different suction intensities more natural and improving the overall continuity of suction.

[0044] Please see Figure 1 and Figure 2In the resting state, at least one enlarged portion 210 is spaced apart from the other enlarged portions 210. This spacing allows for the formation of a stable gap channel 110 when the valve disc 200 is not deformed, ensuring that the channel 110 is not blocked by multiple enlarged portions 210. This provides sufficient initial air intake for subsequent light inhalation, structurally avoiding the problems of sudden increase in initial suction resistance and insufficient airflow during light inhalation, thus ensuring reliable microphone triggering during light inhalation. The spacing prevents multiple enlarged portions 210 from sticking together and compressing each other in the resting state, providing ample space for the independent deformation of each valve disc 200. When the user's suction force changes, each valve disc 200 can deform independently according to the airflow pressure (without overcoming the friction or compression force of adjacent enlarged portions 210), ensuring more sensitive and precise suction resistance adjustment and avoiding adjustment lag or suction resistance deviation caused by valve disc interference. The interval setting can reduce long-term contact wear between the expansion parts 210 and avoid adhesion, deformation or damage of the expansion parts 210 due to frequent suction. At the same time, the independent deformation space can reduce the mechanical impact of deformation of a single valve disc 200 on other valve discs 200, improve the fatigue resistance of the overall valve disc 200 structure, and extend the service life of the airflow regulating valve 10.

[0045] The sheet portion 220 is sheet-shaped, and the plane containing the sheet portion 220 forms an angle of 90±20° with the length direction of the channel 110. The length direction of the channel 110 is the main airflow direction (e.g., the axial direction from the inlet end 111 to the outlet end), and the plane containing the sheet portion 220 forms an angle of 90±20° with this direction (i.e., approximately perpendicular or nearly perpendicular to the airflow direction). At this angle, the airflow pressure can act perpendicularly or at a large angle on the surface of the sheet portion 220, forming an effective bending moment: during light suction, a small airflow pressure can drive the sheet portion 220 to undergo slight deformation, causing the expansion portion 210 to fine-tune the inlet cross-section, avoiding empty suction; during heavy suction, the increased airflow pressure can be efficiently converted into deformation force, causing the sheet portion 220 to bend further, ensuring that the expansion portion 210 fully avoids obstruction to increase the airflow volume and solve the problem of suffocation. This angle range ensures that the sheet portion 220 can respond sensitively to suction forces of varying intensities, achieving stepless dynamic adaptation of suction resistance. If the included angle is less than 70°, the airflow pressure will easily generate shear force along the plane of the sheet portion 220, resulting in uneven stress on the sheet portion 220 and tearing after long-term use; if the included angle is greater than 110°, the effective driving force of the airflow pressure on the sheet portion 220 is insufficient, making it difficult to trigger deformation and lose its regulating function.

[0046] Please see Figure 2 and Figure 4The valve disc 200 has a guide surface 230 formed on the side facing the air inlet end 111, tilted away from the air inlet end 111. The guide surface 230 extends from the middle of the valve disc 200 to the end of the valve disc 200 that is not connected to the channel 110 (i.e., the free end of the valve disc 200). The guide surface 230 can guide the airflow to flow smoothly along the inclined surface through the valve disc 200, avoiding the airflow directly impacting the end face of the valve disc 200 and generating turbulence or local high pressure, which greatly reduces the airflow resistance. Whether it is a small amount of airflow during light suction or a large amount of airflow during heavy suction, it can maintain smooth flow and improve suction smoothness. The inclined guide surface 230 can convert part of the axial impact force of the airflow (along the length direction of the channel 110) into a radial force (along the diameter direction of the channel 110) that drives the deformation of the valve disc 200, making the valve disc 200 respond more efficiently to suction of different intensities and further optimizing the accuracy of stepless adjustment of suction resistance. The smooth, inclined structure of the guide surface 230 reduces friction and turbulence noise between the airflow and the valve disc 200, lowers noise during the suction process, and makes the user experience quieter and more comfortable.

[0047] Please see Figures 1 to 4 The system employs two valve discs 200, arranged symmetrically on both sides of the axis of the channel 110. This mirror-symmetrical distribution ensures complete symmetry of the air intake gap within the channel 110 along both sides of the axis. During suction, the airflow can flow evenly along the symmetrical paths on both sides, resulting in a more stable and smooth airflow experience during both light and heavy suction. Compared to designs with three or more valve discs 200, the structure of two symmetrical valve discs 200 is simpler, reducing mold development complexity and the number of parts. Furthermore, the mirror-symmetrical assembly method eliminates the need for complex positioning calibration, reducing assembly errors and ensuring consistency during mass production, thus balancing functional reliability and production economy.

[0048] The enlarged portion 210 is block-shaped. The volume of the enlarged portion 210 is larger than that of the sheet portion 220, and / or the weight of the enlarged portion 210 is greater than that of the sheet portion 220. Based on this configuration, the enlarged portion 210 possesses stronger structural rigidity. During light suction, the sheet portion 220 deforms flexibly, causing the enlarged portion 210 to shift slightly. The block-shaped structure of the enlarged portion 210 prevents excessive displacement, precisely reducing the intake cross-section and preventing dry suction. During heavy suction, the enlarged portion 210, through its own rigidity, limits the maximum deformation of the sheet portion 220, preventing excessive bending of the valve disc 200 that could narrow the intake passage 110, ensuring sufficient airflow, solving the problem of suffocation, and achieving precise and controllable suction resistance adjustment. The enlarged portion 210 provides a stable restoring support force for the sheet portion 220. After a change in suction force, the enlarged portion 210, using its own inertia and rigidity, can quickly cause the thin plate portion 220 to rebound to the appropriate position. This avoids reset lag caused by elastic fatigue of the thin plate portion 220, ensuring that the suction resistance is adjusted in real time according to changes in suction force, and improving the smoothness of switching between different suction states. The enlarged portion 210 is responsible for rigid limiting and reset, while the thin plate portion 220 is responsible for flexible deformation. The two form a clear functional division, avoiding fatigue damage caused by a single structure having to both deform and bear weight. This reduces the wear and tear on the valve disc 200 caused by long-term repeated suction. At the same time, the block-shaped enlarged portion 210 is not easily deformed or worn by airflow impact, significantly improving the overall fatigue resistance and service life of the valve disc 200.

[0049] In some embodiments, the valve seat 100 also has a through-hole forming a sensing channel 120, which is spaced apart from the channel 110. The sensing channel 120 is used to mount the airflow sensor of the electronic atomizer. The spaced arrangement between the sensing channel 120 and the channel 110 ensures that the detection environment of the airflow sensor is independent of the airflow regulation area of ​​the main channel. Deformation of the valve disc 200 in the main channel causes dynamic fluctuations in the airflow, and the spaced design prevents these fluctuations from being directly transmitted to the sensing channel 120, ensuring that the airflow sensor detects a stable and representative airflow signal, thereby ensuring that the electronic atomizer can respond stably under different inhalation intensities. The spaced arrangement between the sensing channel 120 and the channel 110 does not require a complex connection structure and can be achieved by integrally molding the valve seat 100. This improves functional reliability while taking into account production efficiency and ease of maintenance, and has good engineering application value.

[0050] Please see Figures 1 to 4 The airflow regulating valve 10 also includes a liquid-blocking and breathable membrane 300, which is attached to the air outlet end of the sensing channel 120. The liquid-blocking and breathable membrane 300 forms a physical barrier, which does not affect the permeability of airflow detection, but completely intercepts liquid intrusion, preventing malfunctions of the airflow sensor due to liquid contamination, and significantly extending its service life and operational reliability.

[0051] The liquid-blocking and breathable membrane 300 and the valve seat 100 are integrally manufactured using an in-mold insert injection molding process. During the injection molding of the valve seat 100, the in-mold insert injection molding process allows the molten plastic to directly and tightly bond with the edge of the liquid-blocking and breathable membrane 300 and solidify, forming a molecular-level interlocking connection. The liquid-blocking and breathable membrane 300 and the valve seat 100 become an inseparable whole, with a connection strength far exceeding that of traditional assembly methods, ensuring long-term stability of the liquid-blocking and breathable function. During in-mold insert injection molding, the molten plastic fills the mold cavity under high pressure, completely wrapping the edge of the liquid-blocking and breathable membrane 300 and tightly adhering to its surface. This gapless, integrated structure prevents liquid from seeping into the sensor channel 120 from the junction of the liquid-blocking and breathable membrane 300 and the valve seat 100, even in scenarios where the electronic atomizer is tilted, inverted, or has a large amount of condensate, further enhancing the liquid protection for the airflow sensor. In-mold injection molding completes the preparation of a single part in one step, significantly reducing production steps and shortening working hours, while also reducing labor costs and component wear, thus significantly improving production efficiency and economy.

[0052] This application also proposes an electronic atomizer (not shown), which includes a main body (not shown) and the aforementioned airflow regulating valve 10. An air passage is formed inside the main body, and the airflow regulating valve 10 is disposed within the main body. A channel 110 communicates with the air passage. The electronic atomizer of this application includes the aforementioned airflow regulating valve 10, and therefore possesses all the beneficial effects of the aforementioned airflow regulating valve 10, which will not be elaborated further. In some embodiments, the electronic atomizer further includes an airflow sensor, with both the channel 110 and the sensing channel 120 communicating with the air passage, and the airflow sensor installed within the sensing channel 120.

[0053] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An airflow regulating valve for an electronic atomizer, characterized in that, The airflow regulating valve is made of an elastic material, and the airflow regulating valve includes: A valve seat having a through-channel, the channel having an inlet end from which gas flows into the channel; and At least two valve discs are integrally formed with the valve seat. The at least two valve discs are disposed in the channel and arranged circumferentially along the channel. Each valve disc includes an enlarged portion and a thin plate portion. One end of the thin plate portion is connected to the wall of the channel, and the other end of the thin plate portion faces the center of the channel and is connected to the enlarged portion. The deformation difficulty of the enlarged portion is greater than that of the thin plate portion. The airflow regulating valve has a resting state and an active state. In the resting state, all the thin sheet portions are in their initial shape, all the enlarged portions are close to each other, and the flow cross-sectional area of ​​the channel is A. In the active state, at least one of the thin sheet portions bends away from the air inlet end, and at least one of the enlarged portions moves away from the other enlarged portions. The flow cross-sectional area of ​​the channel is B, and B is greater than A.

2. The airflow regulating valve according to claim 1, characterized in that, The value of A is greater than 0.

3. The airflow regulating valve according to claim 2, characterized in that, In the resting state, at least one of the enlarged portions is spaced apart from the other enlarged portions.

4. The airflow regulating valve according to claim 1, characterized in that, The thin sheet is sheet-shaped, and the plane containing the thin sheet makes an angle of 90±20° with the length direction of the channel.

5. The airflow regulating valve according to claim 1, characterized in that, The valve disc has a guide surface formed on the side facing the air intake end, which is inclined away from the air intake end. The guide surface extends from the middle of the valve disc to the end of the valve disc that is not connected to the channel.

6. The airflow regulating valve according to claim 1, characterized in that, The channel is cylindrical, and there are two valve discs arranged symmetrically on both sides of the channel axis.

7. The airflow regulating valve according to claim 1, characterized in that, The enlarged portion is block-shaped; the volume of the enlarged portion is greater than the volume of the sheet portion, and / or the weight of the enlarged portion is greater than the weight of the sheet portion.

8. The airflow regulating valve according to any one of claims 1 to 7, characterized in that, The valve seat also has a through-type sensing channel, which is spaced apart from the channel. The sensing channel is used to install the airflow sensor of the electronic atomizer. The airflow regulating valve includes: A liquid-resistant and gas-permeable membrane is attached to the gas outlet end of the sensing channel.

9. The airflow regulating valve according to claim 8, characterized in that, The liquid-resistant and gas-permeable membrane and the valve seat are integrally manufactured using an in-mold insert injection molding process.

10. An electronic atomizer, characterized in that, The electronic atomizer includes a main body and an airflow regulating valve as described in any one of claims 1 to 7, wherein an air passage is formed inside the main body, the airflow regulating valve is disposed inside the main body, and the passage communicates with the air passage; Alternatively, the electronic atomizer includes a main body, an airflow sensor, and an airflow regulating valve as described in claim 8 or 9, wherein an air passage is formed inside the main body, the airflow regulating valve is disposed inside the main body, the passage and the sensing channel are both connected to the air passage, and the airflow sensor is installed inside the sensing channel.

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