An atomizer ventilation structure, an atomizer and an electronic atomization device

Abstract

The embodiment of the application discloses an atomizer ventilation structure, an atomizer and an electronic atomization device, relates to the technical field of atomization, and can solve the problem that external air pressure change easily influences ventilation action and causes the atomizer to leak liquid. The atomizer ventilation structure comprises a shell, the shell has an air inlet hole, a transition cavity and a sealing element. The sealing element has a sealing surface and a liquid blocking surface, the sealing surface comprises a first sealing surface and a second sealing surface, and one side of the liquid blocking surface is in communication with a liquid storage cavity. In a first state where the pressure difference between the air inlet hole and the liquid storage cavity is less than a threshold value, the first sealing surface seals the air inlet hole, and the second sealing surface seals the transition cavity. In a second state where the pressure difference between the air inlet hole and the liquid storage cavity reaches the threshold value, the air inlet hole is in communication with the transition cavity, and the transition cavity is in communication with the liquid storage cavity. The atomizer ventilation structure is used for ventilation of the electronic atomization device.

Description

Technical Field

[0001] This application relates to the field of atomization, and more particularly to an atomizer ventilation structure, an atomizer, and an electronic atomization device. Background Technology

[0002] Electronic atomizing devices mainly consist of an atomizer and a power supply unit. The atomizer typically includes a reservoir and an atomizing component. The reservoir stores the aerosol-generating matrix, and the atomizing component atomizes the matrix to form an ingestible aerosol. The power supply unit provides energy to the atomizer. During inhalation, as the aerosol-generating matrix in the reservoir is consumed, the pressure inside decreases. The atomizer needs airflow to function properly; therefore, a ventilation system is usually required.

[0003] The current ventilation system ventilates when the pressure inside the oil tank decreases, allowing the liquid reservoir to connect with the atmosphere and achieve pressure balance. However, increased external pressure can also open the ventilation channel, meaning that external air pressure can easily affect the ventilation process and cause leakage in the atomizer. Summary of the Invention

[0004] To address the aforementioned issues, this application provides an atomizer ventilation structure, an atomizer, and an electronic atomizing device, which can effectively reduce the impact of external air pressure on ventilation operations, improve ventilation stability, and prevent leakage.

[0005] In a first aspect, embodiments of this application provide an atomizer ventilation structure applied to an atomizer, wherein the atomizer has a liquid storage chamber. The atomizer ventilation structure includes a housing, which has an air inlet, a transition chamber, and a sealing element. The sealing element has a sealing surface and a liquid-blocking surface. The sealing surface includes a first sealing surface and a second sealing surface, with the side containing the liquid-blocking surface communicating with the liquid storage chamber. In a first state where the pressure difference between the air inlet and the liquid storage chamber is less than a threshold, the first sealing surface seals the air inlet, and the second sealing surface seals the transition chamber. In a second state where the pressure difference between the air inlet and the liquid storage chamber reaches the threshold, the air inlet communicates with the transition chamber, and the transition chamber communicates with the liquid storage chamber.

[0006] Specifically, when the atomizer is in its initial state, i.e., before the suction action occurs, the air pressure in the transition chamber and the reservoir chamber is equal to the external air pressure. Correspondingly, the air inlet and the transition chamber are sealed by the sealing element. As the aerosol-generating matrix in the reservoir chamber is continuously consumed, the pressure inside the reservoir chamber continuously decreases. At this point, the external air pressure and the air pressure in the transition chamber are the same, and both are greater than the pressure inside the reservoir chamber. Correspondingly, the sealing element is subjected to downward pressure, causing it to move away from the air inlet, thus opening the air inlet and the transition chamber. This allows external air to flow into the reservoir chamber, achieving ventilation and restoring the pressure balance between the reservoir chamber and the external air. This facilitates the delivery of the aerosol-generating matrix in the reservoir chamber to the atomizing components of the atomizer. Simultaneously, the sealing element returns to its initial position, i.e., sealing the air inlet and the transition chamber again. During this process, due to the presence of the transition chamber, both the first and second sealing surfaces of the sealing element are subjected to pressure differential forces. However, without a transition cavity, the seal only experiences pressure differential force at the position corresponding to the air inlet, i.e., the first sealing surface. In other words, the additional transition cavity, compared to simply having an air inlet, effectively increases the area of ​​the seal, thereby increasing the air pressure force on the seal. This means the seal can move away from the air inlet with a smaller air pressure force, making air exchange easier with the transition cavity.

[0007] Simultaneously, when the air pressure in the air inlet, transition chamber, and reservoir is the same (i.e., when the air inlet and transition chamber are sealed), if the external air pressure suddenly increases, the air pressure in the reservoir and transition chamber will be the same and lower than the external air pressure. Consequently, the seal will also experience downward pressure. However, since the air pressure in the transition chamber and reservoir is the same, there is no pressure difference between them. That is, the gas in the transition chamber will not exert pressure on the second sealing surface; only the first sealing surface will experience pressure difference force. Therefore, in this case where a pressure difference arises between the air inlet and reservoir due to an increase in external air pressure, compared to the case where a pressure difference arises between the air inlet and reservoir due to a decrease in pressure within the reservoir, the area of ​​the seal subjected to pressure difference force is smaller. In other words, the pressure difference required for the seal to open the air inlet and transition chamber during air exchange is less than the pressure difference required to open the air inlet and transition chamber when the external air pressure increases. This makes the atomizer's air exchange structure less prone to leakage due to increased external atmospheric pressure, while still facilitating air exchange. In addition, if the sum of the areas of the first sealing surface and the second sealing surface remains unchanged, the leakage caused by the increase in external atmospheric pressure can be further reduced by increasing the area difference between the second sealing surface and the first sealing surface.

[0008] It should be noted that the specific structure and shape of the seal are not limited. For example, the seal can be an elastic element, which moves away from or towards the air inlet when subjected to external force, thus opening or blocking the air inlet and transition cavity through its own elastic deformation. Alternatively, the seal can be a non-elastic element, which moves away from the air inlet when subjected to a downward external force. When the air pressure inside and outside the liquid storage chamber is balanced, the seal can move towards the air inlet by adding an elastic buffer. In addition, the outer edge of the seal can abut against the inner wall of the liquid storage chamber, or the lower end of the seal can be connected to a support part for supporting the seal; the specifics are not limited.

[0009] In one possible implementation of this application, a groove is provided on the outer periphery of the housing near the bottom of the air inlet, the opening of the groove faces the sealing surface, and the groove is a transition cavity.

[0010] In one possible implementation of this application, the outer edge of the seal has at least one through hole, located outside the orthographic projections of the first and second sealing surfaces onto the seal. The through hole connects the transition cavity and the reservoir cavity. Specifically, when the through hole is located outside the orthographic projections of the first and second sealing surfaces onto the seal, it means that when the first sealing surface seals the air inlet and the second sealing surface seals the transition cavity, air from the outside of the air inlet and air from the transition cavity will not enter the reservoir cavity through the through hole, thus preventing the aerosol-generating matrix in the reservoir cavity from leaking out through the through hole. Correspondingly, when the seal moves away from the air inlet, i.e., when the air inlet is connected to the transition cavity and the transition cavity is connected to the reservoir cavity, outside air can flow from the air inlet and the transition cavity through the through hole into the reservoir cavity, thereby balancing the pressure inside and outside the reservoir cavity.

[0011] In one possible implementation of this application, the seal is an elastic element, which is fixedly connected to the housing. The seal is capable of elastic deformation in the direction of approaching or away from the air inlet to seal or connect the air inlet and the transition cavity.

[0012] In one possible implementation of this application, the atomizer air exchange structure includes an elastic buffer that elastically supports the seal along a direction perpendicular to the sealing surface. Specifically, in a second state where the pressure difference between the air inlet and the liquid reservoir reaches a threshold, the seal moves away from the air inlet, and the elastic buffer supporting the seal is in a compressed state. In a first state where the pressure difference between the air inlet and the liquid reservoir is less than the threshold, the compressed elastic buffer provides a force close to the air inlet to the seal, providing power for the seal to block the air inlet and the transition chamber.

[0013] In one possible implementation of this application, the atomizer ventilation structure further includes a support bracket fixed to the housing. One end of the elastic buffer is connected to the seal, and the other end is connected to the support bracket. Here, the support bracket increases the stability of the elastic buffer's support for the seal, thereby increasing the reliability of the entire atomizer ventilation structure.

[0014] Secondly, embodiments of this application provide an atomizer having a liquid storage chamber, and the atomizer includes any of the atomizer ventilation structures described in the first aspect. Since it includes the atomizer ventilation structure of this application, it has the same technical effect, namely, it can solve the problem that external air pressure easily affects the ventilation operation, easily causing liquid leakage in the atomizer.

[0015] In one possible implementation of this application, at least a portion of the wall of the liquid storage chamber is a housing of the atomizer ventilation structure.

[0016] Thirdly, embodiments of this application provide an electronic atomizing device, which includes an atomizer and a power supply assembly as described in any of the second aspects. The atomizer includes a liquid storage chamber, and a ventilation structure for the atomizer is connected to the liquid storage chamber. The power supply assembly is connected to the atomizer to provide electrical energy. Because it includes the atomizer of this application, it achieves the same technical effect, namely, it solves the problem that external air pressure can easily affect the ventilation operation, leading to leakage of the atomizer.

[0017] In one possible implementation of this application, the atomizer ventilation structure is located at the end away from the liquid outlet of the reservoir. In related technologies, the atomizer ventilation structure is often located at the liquid outlet of the reservoir. When using a high-viscosity aerosol generating matrix, if the reservoir space is relatively small, air bubbles at the bottom of the liquid outlet can easily block the upper aerosol generating matrix from flowing downwards, resulting in insufficient liquid supply to the atomizer core and affecting the inhalation experience and normal use. However, in this application, because the atomizer ventilation structure is located at the end away from the liquid outlet of the reservoir—for example, above the reservoir—when the pressure inside the reservoir decreases, outside air can replenish the reservoir from the top, reducing the risk of leakage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the atomizer ventilation structure provided in the embodiments of this application;

[0019] Figure 2 Provided for the embodiments of this application Figure 1 A cross-sectional view of AA without a transition cavity;

[0020] Figure 3 Provided for the embodiments of this application Figure 1 A cross-sectional view of the transition cavity AA in the middle;

[0021] Figure 4 This is a cross-sectional exploded view of the atomizer ventilation structure provided in the embodiments of this application without a transition chamber.

[0022] Figure 5 A cross-sectional exploded view of the transition chamber provided in the atomizer ventilation structure of this application embodiment;

[0023] Figure 6 A schematic diagram of the air exchange principle of the atomizer air exchange structure provided in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the support structure in the atomizer ventilation structure provided in the embodiments of this application;

[0025] Figure 8 This is a schematic diagram of the connection between the atomizer ventilation structure and the liquid storage chamber provided in the embodiments of this application;

[0026] Figure 9 A schematic diagram of the atomizer ventilation structure provided in this embodiment of the application without an elastic buffer;

[0027] Figure 10 This is a schematic diagram of the structure of the first sealing element in the atomizer ventilation structure provided in the embodiments of this application;

[0028] Figure 11 This is a schematic diagram of the second sealing element in the atomizer ventilation structure provided in the embodiments of this application.

[0029] Figure label:

[0030] 1-Housing shell; 11-Air inlet; 12-Transition cavity; 13-Seal; 131-First seal; 1311-First through hole; 132-Second seal; 1321-Second through hole; 133-Sealing surface; 3-Liquid storage cavity; 4-Bracket; 41-Limiting part; 5-Elastic buffer. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0032] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0033] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0034] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0036] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0037] Electronic atomizing devices typically include a casing, electrical components, an atomizing coil, an air intake channel, an air outlet channel, and so on. For example, the casing of an electronic atomizing device has holes, and an airflow channel is formed between two holes. The atomizing coil atomizes the aerosol generation matrix, and then the atomized aerosol generation matrix is ​​inhaled by the user along with the air in the airflow channel.

[0038] This application provides an electronic atomizing device, which includes an atomizer and an atomizer ventilation structure. The atomizer includes a liquid storage chamber, and the atomizer ventilation structure is connected to the liquid storage chamber. A power supply component is electrically connected to the atomizer to provide electrical energy. The atomizer's atomizing core atomizes aerosol-generating matrix such as plant leaves or tobacco paste to produce atomized gas for the user to inhale.

[0039] In some embodiments, refer to Figure 8The atomizer ventilation structure of the electronic atomizing device is located at the end away from the liquid outlet of the liquid storage chamber 3. The connection method between the liquid storage chamber 3 and the atomizer ventilation structure is not limited; for example, the atomizer ventilation structure can be fitted onto the upper opening of the liquid storage chamber 3. In related technologies, the atomizer ventilation structure is often located at the outlet of the liquid storage chamber 3. When a high-viscosity aerosol generating matrix is ​​used and the space of the liquid storage chamber 3 is relatively small, the air bubbles at the bottom of the outlet of the liquid storage chamber 3 can easily block the upper aerosol generating matrix from flowing downwards, resulting in insufficient liquid supply to the atomizer core and thus affecting the inhalation experience and normal use. However, in this embodiment, since the atomizer ventilation structure is located at the end away from the outlet of the liquid storage chamber 3, such as above the liquid storage chamber 3, when the pressure inside the liquid storage chamber 3 decreases, outside air is replenished into the liquid storage chamber 3 from the top. Therefore, compared to the design of placing the atomizer ventilation structure close to the liquid storage chamber 3, the situation of insufficient liquid supply to the atomizer core is avoided.

[0040] In addition, this application also provides an atomizer, see reference to Figure 8 The atomizer has a liquid storage chamber 3 and includes an atomizer ventilation structure, which can solve the problem that external air pressure can easily affect the ventilation action and cause the atomizer to leak.

[0041] In some embodiments, refer to Figure 1 , Figure 3 and Figure 8 The atomizer ventilation structure is a separate structural component of the atomizer. This makes it easy to adapt the atomizer ventilation structure to various types of atomizers, thereby increasing the applicability of the atomizer ventilation structure.

[0042] In some embodiments, the housing of the atomizer ventilation structure is the outer shell of the atomizer, and the outer shell of the atomizer has a liquid storage chamber, that is, all other structures of the atomizer ventilation structure except the housing are installed on the outer shell of the atomizer. Alternatively, the other structures of the atomizer ventilation structure except the housing can also be installed on the atomizing seat or the central tube, with the outer shell, atomizing seat, and central tube forming a liquid storage chamber, and the atomizing assembly fixed on the atomizing seat, and the central tube used to supply aerosol flow out of the atomizer.

[0043] When the atomizer is working, the atomizing coil continuously consumes the aerosol matrix generated in the reservoir 3, causing the air pressure inside the reservoir 3 to continuously decrease relative to the external atmospheric pressure. If the internal air pressure drops to a threshold, the amount of liquid absorbed by the atomizing coil from the reservoir 3 will decrease, resulting in poor liquid flow and insufficient liquid supply to the atomizing coil. This can easily lead to dry burning and damage to the atomizing coil. A ventilation structure can introduce outside air into the reservoir 3 when the air pressure drops to a certain value, replenishing the air pressure inside the reservoir 3. Therefore, the ventilation structure can adaptively regulate the air pressure inside the reservoir 3, preventing dry burning of the atomizing coil due to poor liquid flow. However, in related technologies, ventilation structures often suffer from poor ventilation stability due to external air pressure affecting the ventilation operation, leading to leakage problems in the atomizer.

[0044] To address the aforementioned problems, this application also provides an atomizer ventilation structure, referring to... Figure 3 , Figure 5 and Figure 8 The atomizer's ventilation structure includes a housing 1, which has an air inlet 11, a transition chamber 12, and a sealing element 13. The sealing element 13 has a sealing surface 133 and a liquid-blocking surface. The sealing surface 133 includes a first sealing surface and a second sealing surface. The side containing the liquid-blocking surface communicates with the liquid storage chamber 3. Here, the side containing the liquid-blocking surface can be the side of the sealing element 13 facing away from the sealing surface 133; there is no specific limitation. When the first sealing surface seals the air inlet 11 and the second sealing surface seals the transition chamber 12, the liquid-blocking surface can prevent liquid leakage from the liquid storage chamber 3. In a first state where the pressure difference between the air inlet 11 and the liquid storage chamber 3 is less than a threshold, the first sealing surface seals the air inlet 11, and the second sealing surface seals the transition chamber 12. In a second state where the pressure difference between the air inlet 11 and the liquid storage chamber 3 reaches the threshold, the air inlet 11 communicates with the transition chamber 12, and the transition chamber 12 communicates with the liquid storage chamber 3.

[0045] It should be noted that the gas flowing into the air inlet 11 can be the outside atmosphere; or it can be outside atmosphere that has entered the electronic atomizing device and then flows into the liquid storage chamber 3 through the air inlet 11. No specific limitation is made. In this embodiment, for ease of description, the gas entering through the air inlet 11 is described using the outside atmosphere as an example.

[0046] Specifically, for the sake of clarity in describing the working principle of the atomizer's air exchange structure, refer to... Figure 5 , Figure 6 and Figure 8, the external atmospheric pressure is represented by P1, the pressure inside the transition chamber 12 is represented by P2, and the pressure inside the liquid storage chamber 3 is represented by P3. When the atomizer is in the initial state, that is, when the suction action has not occurred, at this time, the air pressures in the transition chamber 12 and the liquid storage chamber 3 are equal to the external air pressure, that is, P1 = P2 = P3. Correspondingly, the air inlet hole 11 and the transition chamber 12 are both in a state blocked by the first sealing surface and the second sealing surface of the sealing member 13. As the aerosol generation matrix in the liquid storage chamber 3 is continuously consumed, the pressure P2 in the liquid storage chamber 3 continuously decreases. At this time, the external air pressure and the air pressure in the transition chamber 12 are the same, that is, P1 = P2, and both are greater than the pressure P3 in the liquid storage chamber 3, that is, P1 = P2 > P3. Correspondingly, the sealing member 13 is subjected to the action of a downward pressure F1, that is, F1 = (P2 - P3) × S1, or expressed as F1 = ΔP3 × S1, where ΔP3 = P2 - P3, S1 is the area of the sealing member 13 subjected to the pressure difference in this case, which can also be understood as the sum of the areas of the first sealing surface and the second sealing surface, and ΔP3 is the pressure difference between the transition chamber 12 and the liquid storage chamber 3. Let the force that can just make the sealing member 13 move downward away from the air inlet hole 11 be F. Then when F < F1, the sealing member 13 moves away from the air inlet hole 11 to open the air inlet hole 11 and the transition chamber 12, so that external air flows into the liquid storage chamber 3 to achieve the purpose of ventilation, that is, to rebalance the air pressure inside the liquid storage chamber 3 and the external air, that is, P1 = P2 = P3, which is conducive to transporting the aerosol generation matrix in the liquid storage chamber 3 to the atomization component of the atomizer. At the same time, the sealing member 13 returns to the position in the initial state, that is, it blocks the air inlet hole 11 and the transition chamber 12 again.

[0047] Refer to Figure 2 and Figure 4 , Figure 2 and Figure 4 is a schematic diagram without setting the transition chamber 12. In this case, when the pressure inside the liquid storage chamber 3 decreases relative to the external pressure, the pressure difference is denoted as ΔP100, and the downward pressure on the sealing member 13 is denoted as F100. Then F100 = ΔP100 × S2, where S2 is the area of the first sealing surface, that is, the lower port area of the air inlet hole 11. At this time, under the action of the pressure F100, it is necessary to open the sealing member 13 to allow external air flow to enter the liquid storage chamber 3, thereby maintaining the internal pressure balance of the liquid storage chamber 3. And when the pressure in the liquid storage chamber 3 remains unchanged, the external pressure of the liquid storage chamber 3 increases relative to the internal pressure of the liquid storage chamber 3, and the relative pressure difference between the two is not less than ΔP100. Correspondingly, the downward pressure on the sealing member 13 is not less than F100, which will cause the sealing member 13 to open due to the pressure difference, thereby increasing the risk of liquid leakage due to the opening of the air inlet hole 11 caused by changes in the external environment. And refer to Figure 3 , Figure 5For the case where the transition cavity 12 is provided, among which, when the pressure difference between the liquid storage cavity 3 and the external air pressure is the same, the additional setting of the transition cavity 12, compared with only setting the air inlet hole 11, is equivalent to increasing the acting area S1 on the seal 13, where S1 is the sum of the areas of the first sealing surface and the second sealing surface, thereby increasing the downward pressure F1 on the seal 13, that is, the seal 13 can move away from the air inlet hole 11 under a smaller air pressure acting force, making it easier to achieve air exchange after setting the transition cavity 12. In addition, referring to Figure 8 , Figure 8 In the figure, the arrows indicate a schematic diagram of the external air flow flowing into the liquid storage cavity 3 when the seal 13 opens the air inlet hole 11 and the transition cavity 12. Thus, for example, when the air pressures in the transition cavity 12 and the liquid storage cavity 3 are the same, and the external air pressure suddenly increases, that is, P1 > P2 = P3, that is, when the air inlet hole 11 and the liquid storage cavity 3 are blocked by the seal 2, at this time, the air pressures in both the liquid storage cavity 3 and the transition cavity 12 are less than the external air pressure. Correspondingly, the seal 13 will also be subjected to a downward pressure. Let the air pressure acting on the seal 13 in this case be F2, then F2 = (P1 - P2) × S2, or expressed as F2 = ΔP1 × S2, where ΔP1 = P1 - P2, S2 is the acting area of the pressure difference on the seal 13 in this case, that is, the area of the first sealing surface, and ΔP1 is the pressure difference between the external atmospheric pressure and the pressure in the transition cavity 12. However, since the air pressures in the transition cavity 12 and the liquid storage cavity 3 are the same and there is no pressure difference between them, that is, the gas in the transition cavity 12 will not exert a pressure on the seal 13. Therefore, compared with the case where the external air pressure and the air pressure in the transition cavity 12 are the same and both are greater than the pressure in the liquid storage cavity 3, the acting area S2 of the seal 13 is relatively reduced compared to S1. If the pressure differences in the above two cases are the same, the acting force on the seal 13 is smaller, that is, F2 < F, which is not sufficient to make the seal 13 move. That is, when the atmospheric pressure increases and a pressure difference is generated between the liquid storage cavity 3 and the atmospheric pressure, the difficulty for the seal 13 to open the air inlet hole 11 due to the pressure difference increases, thereby increasing the difficulty of liquid leakage due to the opening of the air inlet hole 11 caused by changes in the external environment and reducing the liquid leakage risk. In addition, it is also possible to control the difficulty of opening the air inlet hole 11 when the air pressures in both the liquid storage cavity 3 and the transition cavity 12 are less than the external air pressure by expanding the difference in the acting areas of the seal 13 in the two cases, that is, the acting area of the transition cavity 12 on the seal 13, so as to reduce the influence of changes in the external air pressure on air exchange, improve the air exchange stability and prevent liquid leakage.

[0048] For example, continuing, referring to Figure 3 , Figure 6 and Figure 8When P1 = P2 > P3, correspondingly, F1 = ΔP3 × S1, meaning the pressure inside the liquid storage chamber 3 decreases relative to the external air pressure; or when P1 > P2 = P3, correspondingly, F2 = ΔP1 × S2, meaning the external pressure increases relative to the pressure inside the liquid storage chamber 3. In designing the transition chamber 12 and the air inlet 11, S1 = N × S2 can be made, where N is greater than 1. If the external pressure changes, to open the seal 13, ΔP1 = ΔP3 / N must be satisfied, meaning the change in external pressure of the liquid storage chamber 3 has a much smaller impact on the seal 13 than the change in internal pressure. For example, refer to... Figure 6 When both the lower port of the air inlet 11 and the lower port of the transition cavity 12 are circular structures, let the diameter of the lower port of the air inlet 11 be D2 and the diameter of the lower port of the transition cavity 12 be D1. When D1 = 4 × D2, correspondingly, S1 = 16 × S2, that is, when ΔP1 = 16 × ΔP3, F1 = F2 can be achieved. In other words, in both cases, when the seal 13 is opened, ΔP1 is 16 times ΔP3. Therefore, the influence of external pressure changes on ventilation can be reduced to a large extent, and the influence of external pressure on ventilation can be minimized by increasing the value of N. In this way, the seal 13 can be prevented from opening when the external pressure changes abruptly, causing liquid leakage from the liquid storage cavity 3.

[0049] It should be noted that the shell 1 can have various shapes, such as elliptical columnar, cylindrical, square columnar, flat columnar, etc., and there is no specific limitation. Preferably, a cylindrical shell 1 that is simple and easy to manufacture can be used. Correspondingly, preferably, the cross-sectional shape of the shell 1 is circular.

[0050] Additionally, it should be noted that the specific structure and shape of the sealing element 13 are not limited. For example, the sealing element 13 can be an elastic element, which moves away from or towards the air inlet 11 by its own elastic deformation when subjected to external force, thereby opening or blocking the air inlet 11 and the transition cavity 12. Alternatively, the sealing element 13 can be a non-elastic element, which can move away from the air inlet 11 when subjected to a downward external force. When the air pressure inside and outside the liquid storage cavity 3 is balanced, the sealing element 13 can move towards the air inlet 11 by adding an elastic buffer 5. Furthermore, the outer edge of the sealing element 13 can abut against the inner wall of the liquid storage cavity 3, or the lower end of the sealing element 13 can be connected to a support part for supporting the sealing element 13; the specific details are not limited.

[0051] In some embodiments, refer to Figure 5 , Figure 6 and Figure 8 A groove is formed around the outer periphery of the housing 1 near the bottom of the air inlet 11, with the opening of the groove facing the seal 13. The groove serves as a transition cavity 12. Here, the specific shape and number of the transition cavities 12 are not limited; preferably, refer to... Figure 6 and Figure 9 The size of the lower opening of the transition cavity 12 is as large as possible compared to the lower opening of the air inlet 11. That is, while keeping the sum of the areas of the first sealing surface and the second sealing surface unchanged, the difference between the second sealing surface and the first sealing surface is maximized to further reduce leakage caused by the increase in atmospheric pressure.

[0052] In some embodiments, refer to Figure 10 and Figure 11 The outer edge of the seal 13 has at least one through hole, which is located outside the orthographic projection of the lower end face of the air inlet 11 and the lower end face of the transition cavity 12 onto the seal 13. The through hole is used to connect the transition cavity 12 to the liquid storage cavity 3. Here, the through hole being located outside the orthographic projection of the lower end face of the air inlet 11 and the lower end face of the transition cavity 12 onto the seal 13 specifically means that when the seal 13 abuts against the lower end face of the air inlet 11 and the lower end face of the transition cavity 12, that is, when the air inlet 11 and the transition cavity 12 are blocked by the seal 13, the air connecting the outside of the air inlet 11 and the air inside the transition cavity 12 will not enter the liquid storage cavity 3 through the through hole, so as to prevent the aerosol generation matrix in the liquid storage cavity 3 from leaking out through the through hole. Correspondingly, when the seal 13 moves away from the air inlet 11, that is, when the air inlet 11 and the transition cavity 12 are opened, outside air can flow from the air inlet 11 and the transition cavity 12 through the through hole into the liquid storage cavity 3, so as to balance the pressure inside and outside the liquid storage cavity 3.

[0053] It should be noted that the structural form of the seal 13 is not limited in the embodiments of this application. Here, for example, refer to... Figure 10 and Figure 11 Two structural forms of the sealing element 13 are given, referred to as the first sealing element 131 and the second sealing element 132 for ease of explanation. In the embodiments of this application, the sealing element 13 may refer to either the first sealing element 131 or the second sealing element 132, or it may refer to the sealing element 2 formed by stacking the first sealing element 131 and the second sealing element 132. As an example, refer to... Figure 10 The first sealing element 131 has a disc-shaped structure. Compared to other materials, the disc shape is easier to process and can easily match the inner wall of the circular cross-section of the housing 1. The outer contour of the first sealing element 131 should be smaller than the inner wall contour of the housing 1. The outer edge of the first sealing element 131 has four equally spaced first through holes 1311. When the first sealing element 131 moves away from the air inlet 11, outside air can flow from the air inlet 11 and the transition cavity 12 through the first through holes 1311 into the liquid storage cavity 3, so as to balance the pressure inside and outside the liquid storage cavity 3. In addition, as an example, refer to Figure 11The second sealing element 132 has a structure with four second through holes 1321 near its outer edge. The plane where the middle part of the second sealing element 132 is located has a certain height gap with the plane where the bottom end of the sealing element 13 is located. The middle part of the second sealing element 132 can be an elastic deformation element, so that the second sealing element 132 moves away from the air inlet 11 in the form of deformation under force, and moves closer to the air inlet 11 with the restoring force of elastic deformation, so as to block the air inlet 11.

[0054] In some embodiments, refer to Figure 7 and Figure 9 The atomizer ventilation structure also includes a bracket 4, which is fixed to the housing 1. One end of the elastic buffer 5 is connected to the sealing element 13, and the other end is connected to the bracket 4. The connection method between the elastic buffer 5 and the sealing element 13 is not limited; it can be an abutment or a fixed connection. The fixed connection method between the bracket 4 and the housing 1 is also not limited; preferably, refer to… Figure 7 The outer wall of the bracket 4 is equipped with multiple limiting parts 41, which cooperate with the ribs of the housing. In this way, the bracket 4 can increase the support stability of the elastic buffer 5 for the seal 13, thereby increasing the reliability of the entire atomizer ventilation structure.

[0055] In some embodiments, refer to Figure 5 and Figure 8 The atomizer's ventilation structure includes an elastic buffer 5, which is positioned between the seal 13 and the bracket 4. When the distance between the seal 13 and the air inlet 11 increases, the elastic buffer 5 is in an elastically compressed state. One end of the elastic buffer 5 abuts against the side of the seal 13 away from the air inlet 11, and the other end abuts against the bottom of the bracket 4. When compressed, the elastic buffer 5 provides a spring force to the seal 13 near the air inlet 11, providing power for the seal 13 to reset.

[0056] It should be noted that the elastic buffer 5 can be implemented in various ways, such as as a sheet, rubber, or spring. Compared to other materials, springs are easier to deform, have greater elasticity, and provide stronger impact mitigation and restoring force. Therefore, preferably, referring to... Figure 5 and Figure 8 The elastic buffer 5 is a spring.

[0057] In some embodiments, refer to Figure 8 and Figure 9 ,in, Figure 9 This is a schematic diagram of the structure without the elastic buffer 5. The seal 13 is an elastic element, which can elastically deform in the direction close to or away from the air inlet 11 to open or block the air inlet 11 and the transition cavity 12. For example, see reference... Figure 8 and Figure 11Preferably, the structure of the second sealing element 132 is adopted, wherein the middle part of the second sealing element 132 can be an elastically deformable element. Since there is a certain height gap between the plane where the middle part of the second sealing element 132 is located and the plane where the bottom end of the sealing element 13 is located, that is, when the second sealing element 132 is placed on the bracket 4, there is a certain clearance space between the middle part of the second sealing element 132 and the bracket 4, so that the second sealing element 132 moves away from the air inlet 11 in the form of deformation under force, and moves closer to the air inlet 11 with the restoring force of elastic deformation, thereby sealing the air inlet 11. Therefore, Figure 9 The reason why the elastic buffer 5 is not set is that when the seal 13 is an elastic element, the seal 13 can return to its initial position by relying on the restoring force of its elastic deformation.

[0058] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A nebulizer ventilation structure, applied to a nebulizer, the nebulizer having a liquid storage chamber, characterized in that, The atomizer air exchange structure includes: The housing has an air inlet, a transition cavity, and seals; The sealing element has a sealing surface and a liquid-blocking surface. The sealing surface includes a first sealing surface and a second sealing surface. The side where the liquid-blocking surface is located is connected to the liquid storage cavity. The area of ​​the second sealing surface is larger than the area of ​​the first sealing surface. In a first state where the pressure difference between the air inlet and the liquid storage chamber is less than a threshold, the first sealing surface seals the air inlet, and the second sealing surface seals the transition chamber. In the second state where the pressure difference between the air inlet and the liquid storage chamber reaches the threshold, the air inlet is connected to the transition chamber, and the transition chamber is connected to the liquid storage chamber.

2. The atomizer ventilation structure according to claim 1, characterized in that, A groove is formed on the outer periphery of the housing near the bottom of the air inlet, and the opening of the groove faces the sealing surface. The groove is the transition cavity.

3. The atomizer ventilation structure according to claim 2, characterized in that, The outer edge of the seal has at least one through hole, which is located outside the orthographic projection of the first sealing surface and the second sealing surface onto the seal. The through hole is used to connect the transition cavity with the liquid storage cavity.

4. The atomizer ventilation structure according to claim 1, characterized in that, The sealing element is an elastic element, which is fixedly connected to the housing. The sealing element can elastically deform in the direction close to or away from the air inlet to seal or connect the air inlet and the transition cavity.

5. The atomizer ventilation structure according to claim 1, characterized in that, The atomizer ventilation structure includes an elastic buffer element that elastically supports the seal element along a direction perpendicular to the sealing surface.

6. The atomizer ventilation structure according to claim 5, characterized in that, The atomizer ventilation structure also includes a bracket, which is fixed to the housing. One end of the elastic buffer is connected to the sealing element, and the other end is connected to the bracket.

7. An atomizer, the atomizer having a liquid storage chamber, characterized in that, include: The atomizer ventilation structure according to any one of claims 1 to 6.

8. The atomizer according to claim 7, wherein at least a portion of the wall of the liquid storage chamber is the housing of the atomizer's ventilation structure.

9. An electronic atomizing device, characterized in that, include: The atomizer according to any one of claims 7 or 8; A power supply assembly connected to the atomizer to provide electrical power to the atomizer.

10. The electronic atomizing device according to claim 9, characterized in that, The atomizer ventilation structure is located at the outlet end, which is away from the liquid storage chamber.

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