Gas exchange valve and atomizer

Abstract

The utility model discloses a scavenging valve and an atomizer, and the scavenging valve comprises: a support member provided with a cavity; a ventilation channel is formed in the cavity and comprises a first channel and a second channel; the switch piece is arranged in the cavity; the switch piece is provided with a first lip edge part and a second lip edge part; in a natural state, the first lip edge part and the second lip edge part are configured to be attached to the supporting piece so as to close the first channel and the second channel; in the ventilation state, one of the first lip edge part and the second lip edge part is attached to the supporting piece, the other lip edge part is at least partially separated from the supporting piece, then one of the first channel and the second channel is selected to be open, and the other lip edge part is kept closed. The two ends of the scavenging valve are communicated through the scavenging channel, and the movable part of the switch piece can be used for separating or communicating the scavenging channel, so that the scavenging valve can be communicated with the liquid storage cavity and the outside of the liquid storage cavity, pressure balance is realized through gas exchange, and the leakage risk and the dry burning risk of the aerosol matrix are reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic atomization technology, and in particular to a ventilation valve and an atomizer. Background Art

[0002] The aerosol generating device can heat the aerosol matrix to atomize it and mix it with air to form an aerosol and discharge it from the air flow channel. Therefore, the aerosol generating device is usually provided with a liquid storage chamber for storing the aerosol matrix; when the pressure in the liquid storage chamber is greater than the external pressure, the excessive pressure will force the aerosol matrix to leak; when the pressure in the liquid storage chamber is smaller than the external pressure, the aerosol matrix will find it difficult to enter the atomization core for heating, and the atomization core will become burnt due to dry burning, which greatly affects the user experience. Utility Model Content

[0003] The present application provides a ventilation valve and an atomizer, which are used to solve the problems in related technologies in which the aerosol matrix is ​​easily leaked or the atomizer core is easily burned dry due to the pressure imbalance inside and outside the liquid storage chamber of the aerosol generating device.

[0004] In one embodiment, a ventilation valve is provided, comprising:

[0005] A support member is provided with a cavity; the support member has a first end and a second end opposite to each other, a ventilation channel is formed in the cavity, and the ventilation channel includes a first channel and a second channel respectively connectable to the outside of the ventilation valve through the first end and the second end;

[0006] a switch member disposed in the cavity; the switch member having a first lip portion and a second lip portion adapted to engage with or separate from the support member in response to pressure on both sides thereof;

[0007] The ventilation valve has a natural state and a ventilation state;

[0008] In the natural state, the first lip portion and the second lip portion are respectively configured to fit with the support member to close the first channel and the second channel;

[0009] In the ventilation state, one of the first lip portion and the second lip portion is in contact with the support member, and the other is at least partially separated from the support member, so that one of the first channel and the second channel is opened and the other remains closed.

[0010] In one embodiment, the method includes:

[0011] The first channel has a first air inlet, and the first air inlet is arranged at the second end;

[0012] The second channel has a second air inlet, and the second air inlet is arranged at the first end;

[0013] The support member has a first surface and a second surface opposite to each other, the switch member and the first surface of the support member form the first channel, and the switch member and the second surface of the support member form the second channel;

[0014] The ventilation state includes a first state and a second state;

[0015] In the first state, the first lip portion is elastically deformed and at least partially separated from the first surface to open the first channel, and the second lip portion is in contact with the second surface to block the second channel;

[0016] In the second state, the second lip portion is elastically deformed and at least partially separated from the second surface to open the second channel, and the first lip portion is in contact with the first surface to block the second channel.

[0017] In one embodiment, the support member includes a support shaft and a support cylinder, wherein a hollow area is formed in the support cylinder from the first end to the second end, and the support shaft is arranged in the hollow area along the axial direction of the support cylinder; the inner wall of the support cylinder forms the first surface, and the outer wall of the support shaft forms the second surface;

[0018] The switch member is an annular structure and is sleeved on the support shaft; the gap between the outer circumference of the switch member and the first surface forms the first channel, and the gap between the inner circumference of the switch member and the second surface forms the second channel;

[0019] The first lip portion is configured to conform to or separate from the first surface in response to pressure on both sides thereof, so as to block or open the first channel;

[0020] The second lip portion is configured to adhere to or separate from the second surface in response to pressure on both sides thereof, so as to block or open the second channel.

[0021] In one embodiment, the edge of the switch member close to the first end forms the first lip portion, and the edge of the switch member close to the second end forms the second lip portion; the inner diameter of the hollow channel formed by the first lip portion gradually increases in the direction away from the second end; the outer diameter of the second lip portion gradually decreases in the direction away from the first end.

[0022] In one embodiment, along the axial direction of the support tube, the wall thickness of the first lip portion gradually decreases toward the first end, and the wall thickness of the second lip portion gradually decreases toward the second end.

[0023] In one embodiment, the ventilation channel includes a plurality of flow channel cavities formed between the support member and the switch member, and a plurality of connecting channels connecting adjacent flow channel cavities; adjacent connecting channels are staggered.

[0024] In one embodiment, the connecting channel is a capillary channel.

[0025] In one embodiment, the surface of the switch member is provided with a plurality of raised portions spaced apart along the axial direction of the support member, the raised portions extend along the circumference of the switch member, and abut against the support member to form a plurality of flow channel cavities in the ventilation channel; at least one drainage port connecting the flow channel cavities on both sides thereof is also formed on the raised portion, and the drainage ports formed on adjacent raised portions are staggered; therefore, the drainage ports form the connecting channel.

[0026] In one embodiment, the switch element is an integrated structure made of elastic material.

[0027] In one embodiment, an atomizer is also provided, comprising the above-mentioned ventilation valve; and further comprising a liquid storage chamber, and an exchange channel connecting the liquid storage chamber and the outside of the liquid storage chamber; the ventilation valve is arranged in the exchange channel, and one of the first end or the second end is close to the liquid storage chamber and connected to the liquid storage chamber, and the other is away from the liquid storage chamber and connected to the outside of the liquid storage chamber.

[0028] According to the ventilation valve and atomizer of the above-mentioned embodiment, since the two ends of the ventilation valve are connected through the ventilation channel, the movable part of the switch member can isolate or connect the ventilation channel, thereby allowing the ventilation valve to connect the liquid storage chamber with the outside of the liquid storage chamber, achieving pressure balance through gas exchange, and reducing the risk of leakage and dry burning of the aerosol matrix. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the ventilation valve structure in an embodiment of the present application.

[0030] Figure 2 This is a cross-sectional schematic diagram of the ventilation valve in the embodiment of the present application.

[0031] Figure 3 This is a schematic diagram of the explosion of the ventilation valve in the embodiment of the present application.

[0032] Figure 4 Schematic diagram of the switch structure in the embodiment of the present application.

[0033] Figure 5 This is a cross-sectional schematic diagram of a switch element in an embodiment of the present application.

[0034] Figure 6 This is a schematic diagram of the atomizer structure in the embodiment of this application.

[0035] Figure 7 This is a schematic cross-sectional view of the atomizer in an embodiment of the present application.

[0036] The accompanying drawings are numerals as follows:

[0037] 1-air exchange valve; 11-first surface; 12-second surface;

[0038] 2-support member; 21-first end; 22-second end; 23-ventilation channel; 24-first channel; 241-first air inlet; 25-second channel; 251-second air inlet; 26-support shaft; 27-support cylinder; 28-flow channel cavity; 29-connecting channel;

[0039] 3- switch member; 31- movable portion; 32- first lip portion; 33- second lip portion; 34- raised portion; 35- drainage port;

[0040] 4-shell assembly; 41-liquid storage chamber; 42-exchange channel; 43-atomization tube; 44-atomization core; 45-air flow channel; 46-air inlet channel. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0042] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0043] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0044] In related technologies, aerosol generating devices can experience situations where the internal pressure of the liquid reservoir exceeds the external pressure due to a low external pressure environment or high internal temperatures generated during operation. This pressure differential can cause the aerosol matrix inside the reservoir to be squeezed and leak. If the external pressure is greater than the internal pressure, the liquid in the reservoir cannot be transferred to the atomizer core, causing the core to burn due to dry burning. This can cause the user to experience a burnt smell, impacting the user experience.

[0045] In order to solve the above technical problems, a ventilation valve 1 is provided in the embodiment of the present application. Figure 1 and Figure 2 , the ventilation valve 1 comprises:

[0046] The support member 2 is provided with a cavity; the support member 2 has a first end 21 and a second end 22 opposite to each other, and a ventilation channel 23 is formed in the cavity. The ventilation channel 23 includes a first channel 24 and a second channel 25 that can be connected to the outside of the ventilation valve 1 through the first end 21 and the second end 22 respectively;

[0047] The switch member 3 is disposed in the cavity; the switch member 3 has a first lip portion 32 and a second lip portion 33 that are adapted to fit or separate from the support member 2 in response to pressure on both sides thereof;

[0048] The ventilation valve 1 has a natural state and a ventilation state;

[0049] In a natural state, the first lip portion 32 and the second lip portion 33 are respectively configured to fit with the support member 2 to close the first channel 24 and the second channel 25;

[0050] In the ventilation state, one of the first lip portion 32 and the second lip portion 33 is in contact with the support member 2, and the other is at least partially separated from the support member 2, so that one of the first channel 24 and the second channel 25 is opened and the other remains closed.

[0051] The ventilation valve 1 in the embodiment of the present application can be used in an atomizer; by providing the ventilation valve 1, the pressure inside and outside the liquid storage chamber 41 of the atomizer can be balanced, thereby preventing leakage of the aerosol matrix when the pressure inside the liquid storage chamber 41 is greater than that outside, and also preventing the atomizer core 44 from being burnt due to dry burning when the pressure outside the atomizer is greater than that inside.

[0052] The ventilation valve 1 includes a support member 2, which is used to support a switch member 3 disposed within the cavity to prevent damage. To achieve internal and external pressure balance, the ventilation valve 1 itself has a structure that allows ventilation between the inside and outside. The corresponding support member 2 is provided with a cavity, and a ventilation channel 23 is formed within the cavity. The ventilation channel 23 can communicate with the outside world through the first end 21 and the second end 22 of the support member 2, which are arranged opposite each other. This allows the switch member 3 to exchange gas with both ends of the ventilation valve 1, thereby balancing the pressure inside and outside the liquid storage chamber 41 of the atomizer.

[0053] To prevent leakage of aerosol matrix from the ventilation valve 1, the ventilation channel 23 is not always connected to the liquid storage chamber 41 and the outside world. The ventilation valve 1 in the embodiment of the present application includes a switch member 3, which is disposed within the cavity and has a movable portion 31. At least a portion of the movable portion 31 can be adapted to engage or disengage from the support member 2 in response to pressure on either side thereof, thereby blocking or opening the ventilation channel 23. Blocking the ventilation channel 23 also blocks the possibility of leakage of aerosol matrix from the ventilation channel 23. The engagement or separation of the movable portion 31 from the support member 2 is responsive to pressure on either side of the movable portion 31 itself, specifically, to the pressure difference across the movable portion 31. When the pressure difference across the movable portion 31 exceeds the elastic force required to overcome the deformation of the movable portion 31, the movable portion 31 deforms in the corresponding direction, separating from the support member 2 and opening the ventilation channel 23.

[0054] In order to allow the movable portion 31 to adaptively block or open the ventilation channel 23 according to the pressure on both sides, in some optional embodiments, the ventilation channel 23 may specifically include a first channel 24 and a second channel 25; wherein the first channel 24 can be connected to the outside of the ventilation valve 1 through the first end 21 and the second end 22, and the second channel 25 can also be connected to the outside of the ventilation valve 1 through the first end 21 and the second end 22, wherein the outside of the ventilation valve 1 includes the outside of the first end 21 and the outside of the second end 22 of the ventilation valve 1, and one of the first end 21 and the second end 22 is connected to the liquid storage chamber when it is set in the atomizer, and the other is connected to the outside of the liquid storage chamber. Under this structure, the opening and closing of the first channel 24 and the second channel 25 are relatively independent, that is, the opening and closing of the first channel 24 and the second channel 25 can be controlled separately. Specifically, one of the first channel 24 and the second channel 25 can be used as a pressure relief channel to discharge the internal air to the outside when the internal pressure of the liquid storage chamber 41 is greater than the external pressure, and the other can be used as an air supply channel to replenish air from the outside into the internal when the internal pressure of the liquid storage chamber 41 is less than the external pressure.

[0055] Correspondingly, in order to realize the opening and closing of the first channel 24 and the second channel 25 respectively, the movable portion 31 may specifically include a first lip portion 32 and a second lip portion 33; according to the opening and closing condition of the ventilation channel 23, the ventilation valve has at least two states, namely a natural state and a ventilation state, wherein in the natural state, the first lip portion 32 and the second lip portion 33 are configured to fit with the support member 2, thereby closing the first channel 24 or the second channel 25, which isolates the first end 21 and the second end 22 of the support member 2 from each other, thereby preventing the aerosol matrix from leaking from the ventilation channel 23; in the ventilation state, one of the first lip portion 32 and the second lip portion 33 fits with the support member 2, but the other is at least partially separated from the support member 2 under the action of pressure on both sides thereof, so that one of the first channel 24 and the second channel 25 is opened and the other remains closed, allowing the gas on the side with higher pressure to flow through the open ventilation channel 23, thereby achieving pressure balance. For example, the first lip portion 32 is configured to fit or separate from the support member 2 in response to pressure on both sides thereof so as to block or open the first channel 24; when blocking the first channel 24, the first lip portion 32 is tilted toward the first end 21 and sealedly fits on the support member 2, and when subjected to force, it can elastically deform toward the side close to the second end 22 to open the first channel 24; the second lip portion 33 is configured to fit or separate from the support member 2 in response to pressure on both sides thereof so as to block or open the second channel 25; when blocking the second channel 25, the second lip portion 33 is tilted toward the second end 22 and sealedly fits on the support member 2, and when subjected to force, it can elastically deform toward the side close to the first end 21 to open the second channel 25. That is, the movable portion 31 in the embodiment of the present application includes two parts, namely a first lip portion 32 and a second lip portion 33. The first lip portion 32 is provided in the first channel 24 and can respond to pressure on both sides of itself to fit in with or separate from the support member 2. When fitting in with the support member 2, the first channel 24 is blocked, and when separating from the support member 2, the first channel 24 is opened. Similarly, the second lip portion 33 is provided in the second channel 25 and can respond to pressure on both sides of itself to fit in with or separate from the support member 2. When fitting in with the support member 2, the second channel 25 is blocked, and when separating from the support member 2, the second channel 25 is opened.

[0056] Among them, if the first channel 24 is used as a pressure relief channel and the corresponding second channel 25 is an air supply channel, then when the pressure inside the liquid storage chamber 41 is lower than the external pressure, the first lip portion 32 remains in contact with the support member 2, so that the first channel 24 is blocked; and the second lip portion 33 is separated from the support member 2, thereby opening the second channel 25, allowing the outside air to enter the liquid storage chamber 41, and restoring the pressure balance inside and outside the liquid storage chamber 41; when the pressure inside the liquid storage chamber 41 is greater than the external pressure, the second lip portion 33 remains in contact with the support member 2, so that the second channel 25 is blocked, and the first lip portion 32 can be separated from the support member 2, thereby opening the first channel 24, allowing the air in the liquid storage chamber 41 to flow out, thereby restoring the pressure balance inside and outside the liquid storage chamber 41.

[0057] In some optional embodiments, in order to achieve independent on-off control of the first channel 24 and the second channel 25, the first channel 24 may have a first air inlet 241, and the first air inlet 241 is arranged at the second end 22; the second channel 25 has a second air inlet 251, and the second air inlet 251 is arranged at the first end 21; the support member 2 has a first surface 11 and a second surface 12 relative to each other, the switch member and the first surface 11 of the support member 2 form the first channel 24, and the switch member and the second surface 12 of the support member 2 form the second channel 25; the ventilation state has a first state and a second state; in the first state, the first lip portion 32 elastically deforms and at least partially separates from the first surface 11 to open the first channel 24, and the second lip portion 33 fits with the second surface 12 to separate the second channel 25; in the second state, the second lip portion 33 elastically deforms and at least partially separates from the second surface 12 to open the second channel 25, and the first lip portion 32 fits with the first surface 11 to separate the second channel 25. Among them, the first surface 11 and the second surface 12 are equivalent to the opposite inner surfaces of the support member 2 set up to form the cavity. The first surface 11 can be elastically fitted with the first lip portion 32, and the second surface 12 can be elastically fitted with the second lip portion 33. In the natural state, the first lip portion 32 and the second lip portion 33 respectively adhere to the first surface 11 and the second surface 12 so that the first channel 24 and the second channel 25 are both kept in a partition state. The ventilation state can be divided into a first state and a second state according to the size of the pressure in the liquid storage chamber and the external pressure. In the first state, the first lip portion 32 and the second lip portion 33 are respectively kept in a partition state. The edge portion 32 elastically deforms, causing the first lip portion 32 to at least partially separate from the first surface 11, thereby opening the first channel 24. However, the second lip portion 33 remains in contact with the second surface 12, blocking the second channel 25. As a result, only the first channel 24 is open. In the second state, the second lip portion 33 elastically deforms, causing it to at least partially separate from the second surface 12, thereby opening the second channel 25. However, the first lip portion 32 remains in contact with the first surface 11, blocking the first channel 24. As a result, only the second channel 25 is open. Therefore, the corresponding gas exchange process is also unidirectional.

[0058] The first air inlet 241 is used for the first channel 42 to always be connected to the outside of the ventilation valve 1 through the second end 22 , and the second air inlet 251 is used for the second channel 25 to always be connected to the outside of the ventilation valve 1 through the first end 21 .

[0059] In some alternative embodiments, please refer to Figure 2 and Figure 3 In order to facilitate the relative independence and separate control of the first channel 24 and the second channel 25, the support member 2 may specifically include a support shaft 26 and a support cylinder 27. A hollow area is formed by passing through the support cylinder 27 from the first end 21 to the second end 22, and the support shaft 26 is arranged in the hollow area along the axial direction of the support cylinder 27; the inner wall of the support cylinder 27 forms the first surface 11, and the outer wall of the support shaft 26 forms the second surface 12; the switch member 3 is an annular structure, and the switch member 3 is sleeved on the support shaft 26; the gap between the outer peripheral side of the switch member 3 and the first surface 11 forms the first channel 24, and the gap between the inner peripheral side of the switch member 3 and the second surface 12 forms the second channel 25; the first lip portion 32 is configured to respond to pressure on both sides thereof to fit with or separate from the first surface 11 to isolate or open the first channel 24; the second lip portion 33 is configured to respond to pressure on both sides thereof to fit with or separate from the second surface 12 to isolate or open the second channel 25. The support member 2 comprises a support shaft 26 and a support tube 27, with the support tube 27 positioned on the outside and the support shaft 26 on the inside. A fixed connection is formed between the support tube 27 and the support shaft 26, forming a cavity between the two. This cavity serves as the ventilation channel 23. Therefore, the inner wall of the support tube 27 serves as the first surface 11, while the outer wall of the support shaft 26 serves as the second surface 12. The switch member 3 is sleeved onto the support shaft 26, thus dividing the ventilation channel 23 into a first channel 24 and a second channel 25. The first channel 24 is formed by the gap between the outer periphery of the switch member 3 and the first surface 11, while the second channel 25 is formed by the gap between the inner periphery of the switch member 3 and the second surface 12. A corresponding first lip portion 32 is designed to engage or disengage with the first surface 11 to control the opening or closing of the first channel 24. The second lip portion 33 is designed to engage or disengage with the second surface 12 to control the opening or closing of the second channel 25.

[0060] In some alternative embodiments, please refer to Figure 4 and Figure 5The first lip portion 32 and the second lip portion 33 may be formed in a specific manner: the first lip portion 32 is formed at the edge of the switch member 3 near the first end 21, and the second lip portion 33 is formed at the edge of the switch member 3 near the second end 22; the inner diameter of the hollow channel enclosed by the first lip portion 32 gradually increases in the direction away from the second end 22; and the outer diameter of the second lip portion 33 gradually decreases in the direction away from the first end 21. The first lip portion 32 extends from the edge of the switch member 3 near the first end 21 in the direction away from the second end 22, and the hollow channel of the first lip portion 32 gradually increases, which is equivalent to the first lip portion 32 forming a trumpet shape; the second lip portion 33 extends from the edge of the switch member 3 near the second end 22 in the direction away from the first end 21, and the outer diameter of the second lip portion 33 gradually decreases, which is equivalent to the second lip portion 33 forming a cone shape. The edge of the first lip portion 32 can be fitted into or separated from the inner wall of the support tube 27, thereby realizing the isolation or connection of the first channel 24; the edge of the corresponding second lip portion 33 can also be fitted into or separated from the support shaft 26, thereby realizing the isolation or connection of the second channel 25.

[0061] According to the shape of the first lip portion 32 and the second lip portion 33, when the pressure inside the liquid storage chamber 41 is greater than the external pressure, the first lip portion 32 remains in contact with the support tube 27 under the action of the pressure difference on both sides, thereby maintaining the partition of the first channel 24; the second lip portion 33 is separated from the support shaft 26, thereby opening the second channel 25, so that the air in the liquid storage chamber 41 can be discharged to the outside along the second channel 25, achieving a pressure balance inside and outside the liquid storage chamber 41; when the pressure outside the liquid storage chamber 41 is greater than the internal pressure, the first lip portion 32 is separated from the support tube 27 under the action of pressure on both sides, thereby opening the first channel 24, and the second lip portion 33 remains in contact with the support shaft 26, thereby maintaining the partition of the second channel 25, so that the outside air can enter the liquid storage chamber 41 along the first channel 24, achieving a pressure balance inside and outside the liquid storage chamber 41.

[0062] In some optional embodiments, to improve the sensing sensitivity of the first lip portion 32 and the second lip portion 33, the wall thickness of the first lip portion 32 gradually decreases toward the first end 21, and the wall thickness of the second lip portion 33 gradually decreases toward the second end 22 along the axial direction of the support tube 27. The thinner the first lip portion 32 and the second lip portion 33, the greater the likelihood of deformation due to the pressure difference between the two sides, that is, the higher the sensing sensitivity of the first lip portion 32 and the second lip portion 33.

[0063] In some alternative embodiments, please refer to Figure 4 and Figure 5In addition to using the movable portion 31 to open and close the ventilation channel 23 to prevent leakage of the aerosol matrix, the ventilation channel 23 can also be designed so that the ventilation channel 23 itself can function to isolate the aerosol matrix. Specifically, the ventilation channel 23 can also include multiple flow channel cavities 28 formed between the support member 2 and the switch member 3, and a plurality of connecting channels 29 connecting adjacent flow channel cavities 28; adjacent connecting channels 29 are staggered. In the embodiment of the present application, the ventilation channel 23 is configured as a multi-section connection, namely, multiple flow channel cavities 28 and connecting channels 29 connecting adjacent flow channel cavities 28. Moreover, adjacent connecting channels 29 are staggered. Therefore, even if the aerosol matrix leaks, the risk of continued outflow is reduced due to the staggered connecting channels 29.

[0064] In some optional embodiments, to further reduce the risk of aerosol matrix leakage, the connecting channel 29 can be specifically a capillary channel. The characteristic of a capillary channel is that it can isolate liquid to a certain extent while allowing gas to pass through, thereby reducing the risk of aerosol matrix leakage.

[0065] In some alternative embodiments, please refer to Figure 4 and Figure 5 In order to form a multi-section connected ventilation channel 23, the surface of the switch member 3 in the embodiment of the present application is provided with a plurality of protrusions 34 distributed at intervals along the axial direction of the support member 2. The protrusions 34 extend along the circumference of the switch member 3 and abut against the support member 2 to form a plurality of flow channel cavities 28 in the ventilation channel 23; at least one drainage port 35 is also formed on the protrusion 34 to connect the flow channel cavities 28 on both sides thereof, and the drainage ports 35 formed on adjacent protrusions 34 are staggered; therefore, the drainage ports 35 form a connecting channel 29. Among them, the surface of the switch member 3 specifically includes its outer surface and / or inner surface, that is, when the switch member 3 is an annular structure, according to its inside and outside, the first channel 24 and the second channel 25 divided by the ventilation channel 23 can each form a mutually independent multi-segment airway; in the multi-segment airway, the flow channel cavity 28 is formed by the protrusion 34, and the protrusion 34 can extend circumferentially along the surface of the switch member 3 to form a full circle of protrusion structure, thereby forming a flow channel cavity 28 extending circumferentially on the surface of the switch member 3, and adjacent flow channel cavities 28 are connected through the drainage ports 35 formed on the protrusion 34. In order to isolate the liquid and prevent leakage of the aerosol matrix, the drainage ports 35 formed on adjacent protrusions 34 are staggered with each other. In addition, the drainage ports 35 formed on the same protrusion 34 can include one or more, and each drainage port 35 can be symmetrically arranged based on the axial direction of the switch member 3. The flow channel cavity 28 and the connecting channel 29 in the embodiment of the present application are formed by the switch member 3 and the support member 2 being mutually enclosed.

[0066] The switch member 3 can be a ring-shaped structure, and the ventilation channel 23 can be divided into a first channel 24 and a second channel 25 through the switch member 3; wherein the first channel 24 and the second channel 25 can each be formed by the above-mentioned flow channel cavity 28 and the connecting channel 29, wherein the first channel 24 can specifically be based on the raised portion 34 on the outer peripheral side of the switch member 3 and the inner wall of the support tube 27 to form the flow channel cavity 28 and the connecting channel 29, and the second channel 25 can be based on the raised portion 34 on the inner peripheral side of the switch member 3 and the outer wall of the support shaft 26 to form the flow channel cavity 28 and the connecting channel 29.

[0067] In some optional embodiments, in order to ensure that the switch member 3 effectively controls the isolation and opening of the ventilation channel 23, the switch member 3 can be specifically an integrated structure made of elastic material. The movable portion 31 is formed on the switch member 3, so the movable portion 31 is also formed integrally with the switch member 3. Since the switch member 3 and the movable portion 31 are made of elastic material, when the pressure difference on both sides of the movable portion 31 is small, the movable portion 31 maintains contact with the support member 2 under the action of its own elasticity to isolate the ventilation channel 23; when the pressure difference on both sides of the movable portion 31 is large, the movable portion 31 can be deformed in the corresponding direction under the action of the corresponding pressure difference to open the ventilation channel 23. In some embodiments, the elastic material can be a soft rubber material including silicone, etc., which can have good sealing properties and also achieve elastic deformation.

[0068] Moreover, in the integrated structure of the switch member 3 made of elastic material, a protrusion 34 is provided on the switch member 3 to form the flow channel cavity 28 and the connecting channel 29. The elasticity of the switch member 3 can ensure a close fit between the protrusion 34 and the support member 2, thereby ensuring the airtightness of the formed flow channel cavity 28 and the connecting channel 29, including the airtightness of the first channel 24 and the second channel 25.

[0069] According to the ventilation valve in the embodiment of the present application, since the two ends of the ventilation valve are connected through the ventilation channel, the movable part of the switch can isolate or connect the ventilation channel, so that the ventilation valve can be connected to the liquid storage chamber and the outside of the liquid storage chamber, and pressure balance is achieved through gas exchange, thereby reducing the leakage risk and dry burning risk of the aerosol matrix.

[0070] The present invention also provides an atomizer, please refer to Figure 6 and Figure 7 , which specifically includes the ventilation valve 1 in the embodiment of the present application; it also includes a liquid storage chamber 41, and an exchange channel 42 connecting the liquid storage chamber 41 and the outside of the liquid storage chamber 41; the ventilation valve 1 is arranged in the exchange channel 42, and one of the first end 21 or the second end 22 is close to the liquid storage chamber 41 and connected to the liquid storage chamber 41, and the other is away from the liquid storage chamber 41 and connected to the outside of the liquid storage chamber 41.

[0071] The atomizer in the embodiment of the present application is used to heat an aerosol substrate to generate an aerosol; therefore, to accommodate the aerosol substrate, the atomizer in the embodiment of the present application includes a housing assembly 1, wherein the housing assembly 1 forms a liquid storage chamber 41, which is used to store the aerosol substrate. In addition, the aerosol substrate in the liquid storage chamber 41 can be replaced / added, that is, the aerosol substrate can be added after the aerosol substrate in the liquid storage chamber 41 is exhausted.

[0072] The aerosol matrix stored in the liquid storage chamber 41 can be heated to generate an aerosol, and then discharged from the liquid storage chamber 41; the shell assembly 1 also forms an air flow channel 45, which is connected to the liquid storage chamber 41, and the aerosol matrix is ​​heated by the atomization assembly to generate an aerosol, and finally discharged from the air flow channel 45.

[0073] The shell assembly 1 can form a liquid storage chamber 41 and an air flow channel 45 in one piece; or, the liquid storage chamber 41 and the air flow channel 45 can be formed separately, that is, the shell assembly 1 can include a suction nozzle part, the air flow channel 45 is formed on the suction nozzle part, and then the suction nozzle part and the shell assembly 1 are fixedly connected.

[0074] In order to accommodate the atomizer core 44, the housing assembly 1 also includes an atomizer tube 43, which can be integrally formed with the housing assembly 1 or fixedly connected to the housing assembly 1; the atomizer tube 43 is connected to the air flow channel 45, or the internal space of the atomizer tube 43 is a component of the air flow channel 45, the atomizer core 44 is arranged in the atomizer tube 43, and a liquid inlet is provided between the atomizer tube 43 and the liquid storage chamber 41, so that the aerosol matrix can enter the atomizer tube 43 through the liquid inlet, so that the aerosol matrix can be heated by the atomizer core 44 to generate an aerosol. In order to allow the aerosol matrix in the liquid storage chamber 41 to be ultimately heated by the atomizer core 44, the liquid inlet provided on the atomizer tube 43 is located at the bottom of the liquid storage chamber 41, so as to avoid the aerosol matrix located below the liquid inlet from entering the atomizer tube 43 when the liquid inlet is set at a high position.

[0075] In addition to the airflow channel 45 for discharging the aerosol generated by the heated aerosol matrix, the atomizer also includes an air inlet channel 46 for admitting outside air. Specifically, the housing assembly 1 is further formed with the air inlet channel 46, which communicates with the liquid storage chamber 41, specifically with the atomizing core 44, allowing outside air to enter the atomizing core 44 and mix with the heated aerosol matrix to form an aerosol.

[0076] Since the exchange channel 42 is connected to the liquid storage chamber 41, the ventilation valve 1 is arranged in the exchange channel 42 and one end of the ventilation valve 1 is close to the liquid storage chamber 41 and connected to the liquid storage chamber 41, and the other end is away from the liquid storage chamber 41 and connected to the outside. Therefore, it is equivalent to the ventilation valve 1 connecting the liquid storage chamber 41 and the outside of the liquid storage chamber 41. In this way, the connection relationship between the liquid storage chamber 41 and the outside of the liquid storage chamber 41 can be adjusted through the ventilation valve 1. When the liquid storage chamber 41 is connected to the outside of the liquid storage chamber 41, the pressure difference between the liquid storage chamber 41 and the outside of the liquid storage chamber 41 can be balanced, which can avoid the leakage of aerosol matrix due to excessive pressure inside the liquid storage chamber 41, and can also prevent the dry burning of the atomization core 44 due to excessive pressure inside the liquid storage chamber 41.

[0077] In addition, the atomizer in the embodiment of the present application may be provided with a power supply assembly, wherein the power supply assembly may be detachably fixedly connected to the housing assembly 1, thereby facilitating replacement of the power supply assembly; alternatively, the housing assembly 1 may be non-detachably connected to the power supply assembly, and the power supply assembly may be rechargeable to replenish the power supply assembly. The atomizer in the embodiment of the present application may also not include a power supply assembly and be configured to be used in conjunction with an external power supply.

[0078] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A ventilation valve, characterized in that: include: A support member is provided with a cavity; the support member has a first end and a second end opposite to each other, a ventilation channel is formed in the cavity, and the ventilation channel includes a first channel and a second channel respectively connectable to the outside of the ventilation valve through the first end and the second end; a switch member disposed in the cavity; the switch member having a first lip portion and a second lip portion adapted to engage with or separate from the support member in response to pressure on both sides thereof; The ventilation valve has a natural state and a ventilation state; In the natural state, the first lip portion and the second lip portion are respectively configured to fit with the support member to close the first channel and the second channel; In the ventilation state, one of the first lip portion and the second lip portion is in contact with the support member, and the other is at least partially separated from the support member, so that one of the first channel and the second channel is opened and the other remains closed.

2. The ventilation valve according to claim 1, characterized in that include: The first channel has a first air inlet, and the first air inlet is arranged at the second end; The second channel has a second air inlet, and the second air inlet is arranged at the first end; The support member has a first surface and a second surface opposite to each other, the switch member and the first surface of the support member form the first channel, and the switch member and the second surface of the support member form the second channel; The ventilation state includes a first state and a second state; In the first state, the first lip portion is elastically deformed and at least partially separated from the first surface to open the first channel, and the second lip portion is in contact with the second surface to block the second channel; In the second state, the second lip portion is elastically deformed and at least partially separated from the second surface to open the second channel, and the first lip portion is in contact with the first surface to block the second channel.

3. The ventilation valve according to claim 2, characterized in that The support member includes a support shaft and a support cylinder, wherein a hollow area is formed in the support cylinder from the first end to the second end, and the support shaft is arranged in the hollow area along the axial direction of the support cylinder; the inner wall of the support cylinder forms the first surface, and the outer wall of the support shaft forms the second surface; The switch member is an annular structure and is sleeved on the support shaft; the gap between the outer circumference of the switch member and the first surface forms the first channel, and the gap between the inner circumference of the switch member and the second surface forms the second channel; The first lip portion is configured to conform to or separate from the first surface in response to pressure on both sides thereof, so as to block or open the first channel; The second lip portion is configured to adhere to or separate from the second surface in response to pressure on both sides thereof, so as to block or open the second channel.

4. The ventilation valve according to claim 3, characterized in that The edge of the switch member close to the first end forms the first lip portion, and the edge of the switch member close to the second end forms the second lip portion; the inner diameter of the hollow channel formed by the first lip portion gradually increases in the direction away from the second end; the outer diameter of the second lip portion gradually decreases in the direction away from the first end.

5. The ventilation valve according to claim 4, characterized in that Along the axial direction of the support tube, the wall thickness of the first lip portion gradually decreases toward the first end, and the wall thickness of the second lip portion gradually decreases toward the second end.

6. The ventilation valve according to any one of claims 1 to 5, characterized in that: The ventilation channel includes a plurality of flow channel cavities formed between the support member and the switch member, and a plurality of connecting channels communicating with adjacent flow channel cavities; the adjacent connecting channels are staggered.

7. The ventilation valve according to claim 6, characterized in that The connecting channel is a capillary channel.

8. The ventilation valve according to claim 6, characterized in that The surface of the switch member is provided with a plurality of raised portions distributed at intervals along the axial direction of the support member, and the raised portions extend along the circumference of the switch member and abut against the support member to form a plurality of flow channel cavities in the ventilation channel; the raised portions are also formed with at least one drainage port connecting the flow channel cavities on both sides thereof, and the drainage ports formed on adjacent raised portions are staggered; therefore, the drainage ports form the connecting channel.

9. The ventilation valve according to any one of claims 1 to 5, characterized in that: The switch element is an integrated structure made of elastic material.

10. An atomizer, characterized in that: It includes the ventilation valve as described in any one of claims 1 to 9; it also includes a liquid storage chamber, and an exchange channel connecting the liquid storage chamber and the outside of the liquid storage chamber; the ventilation valve is arranged in the exchange channel, and one of the first end or the second end is close to the liquid storage chamber and connected to the liquid storage chamber, and the other is away from the liquid storage chamber and connected to the outside of the liquid storage chamber.

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