Atomizer and aerosol generation device

Abstract

Disclosed in embodiments of the present application are an atomizer and an aerosol generation device. The atomizer comprises a shell assembly, an atomization seat assembly, an atomization core and a switch unit, the shell assembly is provided with a liquid storage space, and the liquid storage space is used for storing an aerosol generation substrate; the atomization seat assembly is provided with an atomization cavity and a liquid discharging port; the atomization core is arranged in the atomization cavity, and the atomization core is used for atomizing the aerosol generation substrate to generate an aerosol; the switch unit comprises a mouthpiece; the switch unit is configured to have an open state and a closed state; in the open state, the liquid storage space is communicated with the liquid discharging port, and in the closed state, at least part of the liquid storage space is isolated from the liquid discharging port; and the mouthpiece and the shell assembly generate a displacement difference in the height direction of the atomizer, such that the switch unit is switched between the open state and the closed state. According to the atomizer of the embodiments of the present application, the liquid leakage risk of the atomizer can be reduced, thereby improving the user experience.

Description

Atomizer and aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on and claims the priority of Chinese patent application with application number 202420023168.3 and application date of January 2, 2024. The entire content of this Chinese patent application is hereby incorporated into this disclosure by reference. Technical Field

[0003] The present application relates to the field of atomization technology, and in particular to a nebulizer and an aerosol generating device. Background Art

[0004] This section is intended to provide a background or context to the embodiments presented in this application. No statement herein is admitted to be prior art by virtue of its inclusion in this section.

[0005] An aerosol generating device is an electronic transmission system that controls the working state and smoke output through control circuits and atomizing elements for user use.

[0006] The existing atomization chamber and liquid storage space are connected through a lower liquid port. Due to the large liquid injection volume of the atomizer, a relatively large amount of aerosol-generating matrix is ​​stored in its liquid storage space. This part of the aerosol-generating matrix is ​​at risk of being squeezed out of the atomization core of the atomizer under the action of its own gravity. Summary of the Invention

[0007] In view of this, the embodiments of the present application hope to provide a nebulizer and an aerosol generating device, aiming to reduce the risk of liquid leakage of the nebulizer and enhance the user experience.

[0008] To achieve the above objectives, an embodiment of the present application provides an atomizer, comprising:

[0009] A housing assembly having a liquid storage space for storing an aerosol-generating substrate;

[0010] An atomizing seat assembly is provided with an atomizing chamber and a lower liquid port;

[0011] An atomizing core disposed in the atomizing chamber, the atomizing core being used to atomize an aerosol-generating matrix to generate an aerosol;

[0012] The switch unit includes a suction nozzle, and the switch unit is configured to have an open state and a closed state. In the open state, the liquid storage space is connected to the lower liquid port, and in the closed state, at least a portion of the liquid storage space is isolated from the lower liquid port. The suction nozzle and the housing assembly generate a displacement difference in the height direction of the atomizer to switch the switch unit between the open state and the closed state.

[0013] In one embodiment, the housing assembly has a cavity and a mounting channel extending along the height direction of the atomizer. At least a portion of the atomizer seat assembly is disposed within the cavity and defines the liquid storage space with the cavity wall. The switch unit is movably disposed within the mounting channel. When projected onto a plane perpendicular to the height direction of the atomizer, the projection of the switch unit covers the projection of the lower liquid port.

[0014] In the open state, the switch unit is separated from the top wall of the atomizer seat assembly, and in the closed state, the switch unit is in contact with the top wall of the atomizer seat assembly.

[0015] In one embodiment, a first slide rail extending spirally along the height direction of the atomizer is provided on the inner wall of the mounting channel, and the suction nozzle has a first limiting surface facing the atomizer seat assembly and a second limiting surface away from the atomizer seat assembly, the first limiting surface is slidably engaged with the top surface of the first slide rail, and the second limiting surface is slidably engaged with the bottom surface of the first slide rail.

[0016] In one embodiment, a first stopper and a first sliding surface facing away from the atomizer seat assembly are provided on the inner wall of the mounting channel, and a second stopper and a second sliding surface facing away from the atomizer seat assembly are provided on the switch unit, and both the first sliding surface and the second sliding surface extend spirally along the height direction of the atomizer;

[0017] The first limiting member abuts against the second sliding surface, and the second limiting member abuts against the first sliding surface.

[0018] In one embodiment, a guide groove extending along the height direction of the atomizer is provided on the inner wall of the mounting channel, and a guide rib extending along the height direction of the atomizer is provided on the suction nozzle. The guide groove and the guide rib are slidably engaged with each other so that the switch unit can move along the height direction of the atomizer.

[0019] In one embodiment, the switch unit further comprises a switch member, the switch member is connected to the suction nozzle and moves synchronously with the suction nozzle, and the switch member is movably arranged in the mounting channel along the height direction of the atomizer;

[0020] The switch member has a receiving groove opening toward the atomizer seat assembly. In the closed state, the groove wall of the receiving groove and the top wall of the atomizer seat assembly form a temporary storage bin, which is a part of the liquid storage space.

[0021] In one embodiment, the liquid storage space includes a spare tank and a lower liquid tank. In the open state, the lower liquid tank is isolated from the spare tank and connected to the lower liquid port. In the closed state, the lower liquid tank is connected to the spare tank and isolated from the lower liquid port.

[0022] In one embodiment, the switch unit has an air outlet channel, and the air outlet channel is connected to the outside at one end away from the atomizer seat assembly. In the open state, the air outlet channel is connected to the atomizer chamber, and in the closed state, the air outlet channel is not connected to the atomizer chamber.

[0023] In one embodiment, an air guide channel is provided on the atomizer seat assembly, and the atomization chamber and the air outlet channel are connected through the air guide channel. A protrusion extending along the height direction of the atomizer is provided on the side wall of the air guide channel. In the open state, the protrusion is located outside the air outlet channel. In the closed state, at least part of the protrusion is located inside the air outlet channel and is sealed with the peripheral wall of the air outlet channel.

[0024] Another aspect of an embodiment of the present application provides an aerosol generating device, comprising a power supply assembly and the atomizer described in any one of the above embodiments, wherein the power supply assembly is electrically connected to the atomizer core.

[0025] In the atomizer of the embodiment of the present application, the switch unit has an open state and a closed state. When the switch unit is in the open state, the liquid storage space is connected to the lower liquid port. In this way, the aerosol-generating matrix stored in the liquid storage space can be diverted to the atomizer core and atomized by the atomizer core to generate an aerosol, thereby facilitating inhalation by the user. When the switch unit is in the closed state, at least a portion of the liquid storage space is isolated from the lower liquid port, and the path for most of the aerosol-generating matrix in the liquid storage space to be diverted to the atomizer core is cut off. The aerosol-generating matrix remaining in the atomizer core is relatively small, and the squeezing force applied to the atomizer core is relatively small. The risk of leakage during transportation or long-term storage of the atomizer is relatively low, thereby improving the user experience.

[0026] In addition, by controlling the displacement difference between the nozzle and the shell assembly along the height direction of the atomizer, the switch unit can be switched between the open state and the switching state. This control method is relatively simple. At the same time, whether a displacement difference is generated between the nozzle and the shell assembly along the height direction of the atomizer can be judged by the size of the nozzle exposed outside the shell assembly. The judgment method is relatively intuitive, which is conducive to the user to accurately judge the state of the switch unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of an atomizer according to an embodiment of the present application;

[0028] FIG2 is a cross-sectional view of the atomizer according to the first embodiment of the present application, the cross-sectional view being taken along the same direction as AA in FIG1 , wherein the switch unit is in an open state;

[0029] FIG3 is a schematic structural diagram of a second fixing member according to an embodiment of the present application;

[0030] FIG4 is a schematic structural diagram of a switch unit according to a first embodiment of the present application;

[0031] FIG5 is a cross-sectional view of the atomizer according to the first embodiment of the present application, the cross-sectional view being taken along the same direction as AA in FIG1 , wherein the switch unit is in a closed state;

[0032] FIG6 is a cross-sectional view of an atomizer according to a second embodiment of the present application, the cross-sectional position being the same as that along the AA direction in FIG1 ;

[0033] FIG7 is a schematic structural diagram of a first fixing member according to an embodiment of the present application;

[0034] FIG8 is a schematic structural diagram of a switch unit according to a second embodiment of the present application;

[0035] FIG9 is a cross-sectional view of an atomizer according to a third embodiment of the present application, the cross-sectional view being taken along the same direction as in FIG1 ;

[0036] FIG10 is a schematic structural diagram of a housing assembly according to an embodiment of the present application;

[0037] FIG11 is a schematic structural diagram of a switch unit according to a third embodiment of the present application;

[0038] FIG12 is a cross-sectional view of the atomizer according to the fourth embodiment of the present application, and the cross-sectional position is the same as the AA direction in FIG1 . DETAILED DESCRIPTION

[0039] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0040] In the embodiments of the present application, the orientations or positional relationships of "up", "down", "top", "bottom" and "height direction" are based on the orientations or positional relationships shown in Figures 1, 2, 5, 6, 9 and 12. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] One aspect of an embodiment of the present application provides an aerosol generating device, comprising a power supply assembly and the atomizer provided in any embodiment of the present application.

[0043] The power supply assembly is primarily used to power the atomizer and control the entire aerosol-generating device, such as turning it on and off. The atomizer is primarily used to house an aerosol-generating substrate and, when powered on, heat and atomize it. The aerosol-generating substrate includes, but is not limited to, materials used for medical, health, wellness, and cosmetic purposes.

[0044] In some embodiments, the atomizer and power supply assembly can be mechanically and electrically connected axially. Furthermore, the atomizer and power supply assembly can be connected together in a removable manner, such as a magnetic connection, a threaded connection, or a snap-on connection. Both the atomizer and power supply assembly can be replaced or upgraded independently, reducing replacement costs and saving users money. Of course, in other embodiments, the atomizer and power supply assembly can also be connected together in a non-removable manner.

[0045] In addition, the atomizer and / or power supply assembly is not limited to being cylindrical, and may also be in other shapes such as an elliptical column or a square column.

[0046] It should be noted that the specific type of the aerosol generating device provided in the embodiments of the present application is not limited. For example, the aerosol generating device can be a medical atomization device, an air humidifier, or an atomization device such as an electronic cigarette.

[0047] Another aspect of the present invention provides an atomizer. Referring to Figures 1 to 12, the atomizer 100 includes a housing assembly 10 with a liquid storage space 11n, an atomizer seat assembly 30, an atomizer core 40, and a switch unit 20. The housing assembly 10 includes a liquid storage space 11n for storing an aerosol-generating substrate; the atomizer seat assembly 30 is provided with an atomizing chamber 30a and a lower liquid port 30b; the atomizer core 40 is disposed in the atomizing chamber 30a and is configured to atomize the aerosol-generating substrate to generate an aerosol; and the switch unit 20 includes a nozzle 21. The switch unit 20 is configured to have an open state and a closed state. In the open state, the liquid storage space 11n is connected to the lower liquid port 30b. In the closed state, at least a portion of the liquid storage space 11n is isolated from the lower liquid port 30b. The nozzle 21 and the housing assembly 10 generate a displacement difference in the height direction of the atomizer 100, thereby switching the switch unit 20 between the open and closed states.

[0048] The shell assembly 10 has a liquid storage space 11n, which means that the liquid storage space 11n is a part of the space inside the shell assembly 10. The liquid storage space 11n is not necessarily formed by the shell assembly 10 alone, and its specific formation method is separately described in the following embodiments.

[0049] The switch unit 20 includes a nozzle 21, which can be used to draw aerosol generated within the atomization chamber 30a. In some embodiments, the switch unit 20 also includes a switch member 22, which engages with the nozzle 21 to achieve synchronous movement with the nozzle 21, and the switch member 22 switches the switch unit 20 between an open state and a closed state.

[0050] It should be noted that the displacement difference between the nozzle 21 and the housing assembly 10 in the height direction of the atomizer 100 can occur while the housing assembly 10 is stationary and the nozzle 21 produces this displacement difference, or it can occur while the nozzle 21 is stationary and the housing assembly 10 produces this displacement difference. Specifically, in the embodiments of the present application, the housing assembly 10 remains relatively stationary and the nozzle 21 produces this displacement difference.

[0051] The power supply assembly is electrically connected to the atomizer core 40 , and the power supply assembly is used to supply electrical energy to the atomizer core 40 . The atomizer core 40 is used to absorb and heat the atomized aerosol-generating matrix and generate aerosol.

[0052] The atomizing core 40 is generally a porous ceramic structure.

[0053] The lower liquid port 30b is a portion of the communication path between the atomizing chamber 30a and the liquid storage space 11n.

[0054] After the liquid storage space 11n is connected to the lower liquid port 30b, the aerosol-generating substrate in the liquid storage space 11n can be guided to the atomizer core 40 through the lower liquid port 30b. In this way, the aerosol-generating substrate stored in the liquid storage space 11n can enter the atomizer cavity 30a and be atomized by the atomizer core 40 to generate an aerosol for the user to inhale.

[0055] Isolating at least a portion of the liquid storage space 11n from the lower liquid port 30b means that at least a substantial portion of the aerosol-generating substrate within the liquid storage space 11n cannot be directed through the lower liquid port 30b to the atomizer core 40. That is, depending on how the switch unit 20 isolates the lower liquid port 30b from the liquid storage space 11n, the aerosol-generating substrate within the liquid storage space 11n may not be directed to the atomizer core 40 at all, or may be directed to the atomizer core 40 with only a small portion, but not the majority. This will be described in detail in the following embodiments.

[0056] It is understood that when the switch unit 20 is in the closed state, most of the aerosol-generating substrate cannot be directed to the atomizer core 40, and relatively less aerosol-generating substrate remains in the atomizer core 40, thereby reducing the risk of leakage of the atomizer 100. When the atomizer 100 is not used for a long time (for example, during transportation or long-term storage), the switch unit 20 can be controlled to be in the closed state to reduce the risk of leakage of the atomizer 100.

[0057] In the related art, the liquid storage space and the atomizer core of the atomizer are always in a connected state. When the atomizer is transported or placed for a long time, a large amount of aerosol-generating matrix squeezes the atomizer core, causing the aerosol-generating matrix to be squeezed out from the holes inside the atomizer core.

[0058] In the atomizer 100 of the embodiment of the present application, the switch unit 20 has an open state and a closed state. When the switch unit 20 is in the open state, the liquid storage space 11n is connected to the lower liquid port 30b. In this way, the aerosol-generating substrate stored in the liquid storage space 11n can be diverted to the atomizer core 40 and atomized by the atomizer core 40 to generate an aerosol, thereby facilitating inhalation by the user. When the switch unit 20 is in the closed state, at least a portion of the liquid storage space 11n is isolated from the lower liquid port 30b, and the path for most of the aerosol-generating substrate in the liquid storage space 11n to be diverted to the atomizer core 40 is cut off. The aerosol-generating substrate remaining in the atomizer core 40 is relatively small, and the squeezing force exerted on the atomizer core 40 is relatively small. The risk of leakage of the atomizer 100 during transportation or long-term storage is relatively low, thereby improving the user experience.

[0059] In addition, by controlling the displacement difference between the suction nozzle 21 and the shell assembly 10 along the height direction of the atomizer 100, the switch unit 20 is switched between the open state and the switching state. This control method is relatively simple. At the same time, whether a displacement difference is generated between the suction nozzle 21 and the shell assembly 10 along the height direction of the atomizer 100 can be judged by the size of the suction nozzle 21 exposed outside the shell assembly 10. The judgment method is relatively intuitive, which is conducive to the user to accurately judge the state of the switch unit 20.

[0060] In the related art, a solution is used to switch the use state of the atomizer by controlling the power supply component to selectively supply power to the atomizer. Since the power supply path involves relative movement between the power supply component and the atomizer during switching, the structure is relatively complex and the implementation cost is relatively high.

[0061] The atomizer 100 of the embodiment of the present application controls the displacement difference between the nozzle 21 and the shell assembly 10 along the height direction of the atomizer 100 to switch the switch unit 20 between the open state and the switching state, thereby realizing the switching of the use state of the atomizer 100. The components of the atomizer 100 only need to be matched with each other, and there is no need for too many structures to match with the nozzle 21. In this way, the structure of the aerosol generating device is simplified and the production cost of the aerosol generating device is reduced.

[0062] The structure of the liquid storage space 11n is not limited. For example, as shown in FIG12 , in some embodiments, the housing assembly 10 has a cavity 11c , and at least a portion of the atomizer assembly 30 is disposed within the cavity 11c and defines the liquid storage space 11n with the walls of the cavity 11c . That is, the liquid storage space 11n is a portion of the cavity 11c .

[0063] In other embodiments, as shown in Figures 2, 5, 6 and 9, the liquid storage space 11n includes a spare tank 11u and a lower liquid tank 11v. In the open state, the lower liquid tank 11v is isolated from the spare tank 11u and connected to the lower liquid port 30b. In the closed state, the lower liquid tank 11v is connected to the spare tank 11u and isolated from the lower liquid port 30b.

[0064] The lower liquid tank 11v is isolated from the spare tank 11u and connected to the lower liquid port 30b, which means that the lower liquid tank 11v is isolated from the spare tank 11u, and the aerosol generating matrix in the spare tank 11u will not flow into the lower liquid tank 11v. The lower liquid tank 11v is connected to the lower liquid port 30b, and the aerosol generating matrix in the lower liquid tank 11v can be diverted to the atomization core 40 through the lower liquid port 30b.

[0065] The lower liquid tank 11v is connected to the spare tank 11u and isolated from the lower liquid port 30b, which means that the lower liquid tank 11v is connected to the spare tank 11u, the aerosol generating matrix in the spare tank 11u can flow into the lower liquid tank 11v, and the lower liquid tank 11v is isolated from the lower liquid port 30b, and the aerosol generating matrix in the lower liquid tank 11v will not be diverted to the atomization core 40 through the lower liquid port 30b.

[0066] In this embodiment, whether the switch unit 20 is in the open state or in the closed state, the liquid storage space 11n is not completely connected to the lower liquid port 30b. In this way, the aerosol-generating matrix in the liquid storage space 11n can enter the atomization chamber 30a in stages to be atomized and generate aerosol.

[0067] Specifically, in this embodiment, the housing assembly 10 has a cavity 11c and a reserve reservoir 11u. At least a portion of the atomizer seat assembly 30 is disposed within the cavity 11c and defines a lower liquid reservoir 11v with the walls of the cavity 11c. When the switch unit 20 is in the open position, the aerosol-generating substrate in the lower liquid reservoir 11v can be directed through the lower liquid port 30b to the atomizer core 40, where it generates an aerosol. When the switch unit 20 is in the closed position, the aerosol-generating substrate in both the lower liquid reservoir 11v and the reserve reservoir 11u cannot be directed through the lower liquid port 30b to the atomizer core 40.

[0068] As shown in FIG. 2 , FIG. 5 , FIG. 6 and FIG. 9 , in some embodiments, the switch unit 20 has an air outlet channel 20 a , and a user can inhale the aerosol generated in the atomization chamber 30 a through the air outlet channel 20 a .

[0069] It should be noted that the air outlet channel 20 a includes a portion of the channel in the suction nozzle 21 and a portion of the channel in the switch member 22 .

[0070] One end of the air outlet channel 20a away from the atomizer seat assembly 30 is connected to the outside. In the open state, the air outlet channel 20a is connected to the atomizer chamber 30a. In this way, the aerosol generated in the atomizer chamber 30a can flow out through the air outlet channel 20a.

[0071] When the switch unit 20 is closed, the air outlet channel 20a is disconnected from the atomizing chamber 30a. Thus, the outside atmosphere and the atomizing core 40 are relatively isolated, thereby keeping the aerosol-generating matrix retained in the atomizing core 40 fresh.

[0072] In this embodiment, when the switch unit 20 is in the open state, the liquid storage space 11n can supply the aerosol-generating substrate to the atomizing core 40, and the air outlet channel 20a is in communication with the atomizing chamber 30a. In this way, the user can start the atomizer 100 to inhale the aerosol. When the switch unit 20 is in the closed state, the flow path between most of the aerosol-generating substrate in the liquid storage space 11n and the atomizing core 40 is cut off. At the same time, the communication path between the air outlet channel 20a and the atomizing chamber 30a is also cut off. This can reduce the risk of leakage of the atomizer 100 while also maintaining the freshness of the aerosol-generating substrate.

[0073] In the prior art, the power supply assembly powers the atomizer on and off by connecting or disconnecting the ejector pin, thereby switching the atomizer's operating state. This structure requires special processing of the ejector pin and ejector pin, otherwise repeated friction will cause the coating to peel off and rust.

[0074] The atomizer 100 of this embodiment does not need to cut off the power supply path from the power supply assembly to the atomizer 100. It only controls the switch unit 20 to switch between the open state and the closed state. In this way, while achieving the control of the liquid supply path from the liquid storage space 11n to the atomizer core 40 being connected or disconnected, it can also achieve the control of the communication path between the air outlet channel 20a and the atomization chamber 30a being connected or disconnected. This structure is relatively simple. At the same time, the aerosol generating device based on the large-liquid-filling atomizer 100 of this application is generally a rechargeable product, and there is no need to worry about the problem of power failure of the power supply assembly.

[0075] It should be noted that the switch unit 20 switches between an open state and a closed state to open or close the communication path between the air outlet channel 20a and the atomizing chamber 30a in any manner. For example, as shown in Figures 2, 5 and 6, in some embodiments, an air guide channel 30d is provided on the atomizing seat assembly 30, and the atomizing chamber 30a is communicated with the air outlet channel 20a through the air guide channel 30d. A protrusion 30c extending in the height direction of the atomizer 100 is provided on the side wall of the air guide channel 30d. In the open state, the protrusion 30c is located outside the air outlet channel 20a. In the closed state, at least a portion of the protrusion 30c is located inside the air outlet channel 20a and is sealed with the peripheral wall of the air outlet channel 20a.

[0076] When the switch unit 20 is in the open state, the protrusion 30c does not block the end of the air outlet channel 20a near the atomizing chamber 30a, so that the user can inhale the aerosol generated in the atomizing chamber 30a through the air outlet channel 20a. When the switch unit 20 is in the closed state, due to the displacement of the switch unit 20 along the height direction of the atomizer 100, the air outlet channel 20a moves downward along the height direction of the atomizer 100, allowing the protrusion 30c to enter the air outlet channel 20a through one end of the air outlet channel 20a and block the end of the air outlet channel 20a near the atomizing chamber 30a.

[0077] It should be noted that there is no limitation on the manner in which the nozzle 21 and the housing assembly 10 generate a displacement difference in the height direction of the atomizer 100. As shown in Figures 6 and 9, in some embodiments, the nozzle 21 can rotate under the action of an external force and generate a displacement in the height direction of the atomizer 100.

[0078] In this embodiment, the user only needs to drive the nozzle 21 to rotate around its axis. During the rotation, the nozzle 21 will generate a displacement along the height direction of the atomizer 100, thereby realizing the switching of the switch unit 20 between the open state and the closed state.

[0079] It can be understood that when the switch unit 20 is switched from the open state to the closed state, the direction in which the suction nozzle 21 rotates around its axial direction is the first direction, and when the switch unit 20 is switched from the closed state to the open state, the direction in which the suction nozzle 21 rotates around its axial direction is the second direction. The first direction and the second direction are opposite.

[0080] Specifically, the following example takes the first direction as the clockwise direction and the second direction as the counterclockwise direction as an example:

[0081] When the switch unit 20 is in the open state, the user twists the nozzle 21 clockwise, and the nozzle 21 rotates clockwise around its axis under the action of the twisting force, thereby switching the switch unit 20 to the closed state. When the switch unit 20 needs to be switched back to the open state, the user twists the nozzle 21 counterclockwise, and the nozzle 21 rotates counterclockwise around its axis under the action of the twisting force, thereby switching the switch unit 20 to the open state. This switching method is relatively simple for the user to operate.

[0082] As shown in Figures 2 and 5, in some other embodiments, the nozzle 21 moves along the height direction of the atomizer 100 to generate displacement along the height direction of the atomizer 100. In this embodiment, a force along the height direction of the atomizer 100 needs to be applied to the nozzle 21, and the nozzle 21 can generate displacement in the same direction as the force under the action of the force.

[0083] In some embodiments, the atomizer 100 further includes an elastic return member 50, and the switch unit 20 can be switched from a closed state to an open state by moving under the action of an external force, causing the elastic return member 50 to produce elastic deformation; when the external force is removed, the switch unit 20 is reset under the elastic force of the elastic return member 50.

[0084] There is no limitation on the type of the elastic reset member 50. For example, it can be a torsion spring, a tension spring, a compression spring, etc.

[0085] Specifically, as shown in Figures 6 and 9, in an embodiment in which the nozzle 21 rotates around its axial direction to drive itself to generate displacement in the height direction of the atomizer 100, the elastic return member 50 can be a torsion spring. The nozzle 21 rotates in one direction around its axial direction under the action of an external force, and the torsion spring elastically deforms to provide a torsional force. After the external force is removed, the torsion spring restores its elastic deformation, and the torsional force provided drives the switch unit 20 (nozzle 21) to rotate in another direction around its axial direction.

[0086] As shown in FIG. 2 and FIG. 5 , in the embodiment in which the mouthpiece 21 moves linearly along the height direction of the atomizer 100 , the elastic return member 50 may be a compression spring, a tension spring, or the like.

[0087] As shown in Figures 2, 5, 6 and 9, in some embodiments, the atomizer 100 has a cavity 11c and a mounting channel 10a extending along the height direction of the atomizer 100, at least a portion of the atomizer seat assembly 30 is disposed in the cavity 11c and defines a liquid storage space 11n with the cavity wall of the cavity 11c, and the switch unit 20 is movably disposed in the mounting channel 10a.

[0088] Specifically, the atomizer seat assembly 30 is located at the bottom of the cavity 11 c , the top wall of the atomizer 100 assembly and the cavity wall of the cavity 11 c define a liquid storage space 11 n , and the lower liquid port 30 b is opened on the top wall of the atomizer seat assembly 30 .

[0089] The switch unit 20 can be displaced in the height direction of the atomizer 100 within the installation channel 10 a.

[0090] It should be noted that the manner in which the switch unit 20 isolates at least a portion of the liquid storage space 11n from the lower liquid port 30b is not limited.

[0091] For example, as shown in Figures 2, 5, 6 and 9, in some embodiments, when projected on a plane perpendicular to the height direction of the atomizer 100, the projection of the switch unit 20 covers the projection of the lower liquid port 30b. In the open state, the switch unit 20 is separated from the top wall of the atomizer seat assembly 30, and in the closed state, the switch unit 20 abuts against the top wall of the atomizer seat assembly 30.

[0092] Specifically, when the switch unit 20 is in the closed state, part of its structure covers the top wall of the atomizer seat assembly 30, while blocking the lower liquid port 30b. In this way, the aerosol-generating matrix in the area defined by the switch unit 20, the atomizer seat assembly 30 and the cavity wall of the cavity 11c cannot enter the atomizer cavity 30a through the lower liquid port 30b.

[0093] In the related art, a seal is formed between the lower liquid port and the liquid storage space by overlapping two turntables, and through holes are provided on both turntables. The two turntables are rotated relative to each other so that the through holes of the two turntables are switched between overlapping and staggered, thereby switching the connection state between the liquid storage space and the lower liquid port. However, in the process of mutual rotation, the sealing gaskets of the two turntables must be sealed on the end faces and radially, and the sealing gaskets must rotate relative to the inner wall of the shell assembly. It is difficult to balance the relationship between the seal and the torque during the rotation process, that is, the seal is good and the torque is large; the torque is small and the seal is not good. At the same time, the torque will change after multiple rotations.

[0094] In the atomizer 100 of this embodiment, the switch unit 20 only needs to achieve sealing with the top wall of the atomizer seat assembly 30, and the structure is relatively simple, and the above-mentioned problem will not occur.

[0095] In other embodiments, when the switch unit 20 is closed, a portion of its structure seals against the peripheral wall of the lower liquid port 30b, thereby sealing the lower liquid port 30b. In this embodiment, a portion of the switch unit 20 can intrude into the space surrounding the lower liquid port 30b and occupy the space enclosed by the lower liquid port 30b. With this sealing method for the lower liquid port 30b, when the switch unit 20 is closed, all aerosol-generating substrate within the liquid storage space 11n cannot enter the atomization chamber 30a through the lower liquid port 30b.

[0096] As shown in Figures 2, 5, 6 and 9, in some embodiments, the switch unit 20 further includes a switch member 22, which is connected to the suction nozzle 21 and moves synchronously with the suction nozzle 21. The switch member 22 is movably arranged in the mounting channel 10a along the height direction of the atomizer 100. The switch member 22 also has a receiving groove 22a opening toward the atomizer seat assembly 30. In the closed state, the groove wall of the receiving groove 22a and the top wall of the atomizer seat assembly 30 are surrounded to form a temporary storage bin 11w, which is a part of the liquid storage space 11n.

[0097] In this embodiment, when the switch unit 20 is in the closed state, a small amount of aerosol-generating substrate will remain in the temporary storage bin 11w. This portion of the aerosol-generating substrate can be in liquid communication with the atomizer core 40 through the lower liquid port 30b. In this way, when the atomizer 100 is transported or stored for a long time, the risk of the atomizer core 40 being separated from the aerosol-generating substrate for a long time and drying out is reduced, effectively avoiding the problem of the atomizer core 40 drying out and affecting the initial puffing experience of the atomizer 100.

[0098] It should be noted that there is no limitation on the manner of controlling the switch unit 20 to generate displacement along the height direction of the atomizer 100. Specifically, three embodiments are described below.

[0099] First embodiment:

[0100] As shown in Figures 2 to 5, a guide groove 131b extending along the height direction of the atomizer 100 is provided on the inner wall of the installation channel 10a, and a guide rib 216 extending along the height direction of the atomizer 100 is provided on the nozzle 21. The guide groove 131b slides with the guide rib 216 to enable the switch unit 20 to move along the height direction of the atomizer 100.

[0101] The number of guide grooves 131b corresponds to the number of guide ribs 216, and the specific number of the two is not limited. For example, as shown in Figures 3 and 4, two guide grooves 131b and two guide ribs 216 are provided.

[0102] The two guide grooves 131 b may be symmetrically arranged along the circumference of the installation channel 10 a , so that the switch unit 20 is more stable and reliable during the movement along the height direction of the atomizer 100 .

[0103] In this embodiment, when the suction nozzle 21 needs to be driven to move along the height direction of the atomizer 100 , a force needs to be applied to the suction nozzle 21 along the height direction of the atomizer 100 .

[0104] Specifically, as shown in Figures 2 and 3, in some embodiments, the housing assembly 10 includes an outer shell 11 and a second fixing member 13. The outer shell 11 has a cavity 11c. At the same time, the outer shell 11 also has a through hole 11d and a mounting groove 11e. The through hole 11d extends along the height direction of the atomizer 100 and is connected to the liquid storage space 11n. The mounting groove 11e is located at one end of the through hole 11d away from the atomizer seat assembly 30. The second fixing member 13 is arranged in the mounting groove 11e. The second fixing member 13 is provided with a second mounting hole 131a. The switch unit 20 is passed through the second mounting hole 131a and the through hole 11d.

[0105] It can be understood that, in this embodiment, the mounting channel 10a includes the through hole 11d and the second mounting hole 131a, and the guide groove 131b is provided on the hole wall of the second mounting hole 131a.

[0106] The radial dimension of the mounting groove 11e may be larger than that of the through hole 11d, so that the second mounting hole 131a and the through hole 11d can be conveniently connected to form the mounting channel 10a.

[0107] As shown in Figures 2 to 5, in some embodiments, the guide groove 131b passes through the top of the mounting channel 10a, and the inner side wall of the mounting channel 10a is protrudingly provided with a third limiting rib 132. The third limiting rib 132 exceeds the top of the mounting channel 10a along the height direction of the atomizer 100, and is located on at least one side of the circumference of the guide groove 131b; in the open state, the guide rib 216 abuts against the top of the mounting channel 10a; the guide rib 216 slides along the guide groove 131b to the closed state under the action of external force, and rotates to the bottom of the third limiting rib 132 to abut against the bottom wall of the third limiting rib 132 to limit the guide rib 216.

[0108] There is no limit to the number of the third limiting ribs 132. For example, as shown in FIG3, the third limiting ribs 132 are provided on both sides of the guide groove 131b along the circumferential direction.

[0109] Specifically, as shown in Figures 2 and 3, when the shell assembly 10 includes an outer shell 11 and a second fixing member 13, the second fixing member 13 includes a main body 131 and a third limiting rib 132, the main body 131 has a guide groove 131b and a second mounting hole 131a, and the third limiting rib 132 exceeds the top wall of the main body 131 along the height direction of the atomizer 100.

[0110] In the open state, the guide rib 216 abuts against the top wall of the body 131. If the switch unit 20 needs to be switched to the closed state, the nozzle 21 needs to be rotated first so that the guide rib 216 is rotated above the guide groove 131b, and then a force is applied to the nozzle 21 to move along the height direction of the atomizer 100. After the nozzle 21 moves downward until it can no longer move, the nozzle 21 is rotated again so that a portion of the guide rib 216 is engaged with the bottom wall of the third guide rib 216.

[0111] The structure of the guide rib 216 is not limited. For example, as shown in Figures 4 and 5, the guide rib 216 is a rib on the nozzle 21 that extends along the height direction of the atomizer 100, and the rib is generally L-shaped. In this way, the L-shaped rib can be more conveniently engaged with the bottom wall of the third limiting rib 132.

[0112] When the switch unit 20 is in the open state, the third limiting rib 132 is used to limit the rotation angle range of the guide rib 216 along the circumferential direction.

[0113] As shown in Figures 2 and 5 , in some embodiments, the atomizer 100 further includes an elastic return member 50 that assists in switching the switch unit 20 from the closed state to the open state. Specifically, after the guide rib 216 is released from the bottom wall of the third limiting rib 132, the elastic return member 50 can push the nozzle 21 upward along the height direction of the atomizer 100.

[0114] In addition, in the closed state, the elastic return member 50 produces elastic deformation, thereby providing the mouthpiece 21 with an elastic force upward along the height direction of the atomizer 100. The elastic force can make the guide rib 216 more firmly clamped on the bottom wall of the third limiting rib 132, so that the switch unit 20 can be more stably in the closed state.

[0115] Second embodiment:

[0116] As shown in Figures 6 to 8, a first slide rail 12b is provided on the inner wall of the mounting channel 10a, which extends spirally along the height direction of the atomizer 100. The nozzle 21 has a first limiting surface 214a facing the atomizer seat assembly 30 and a second limiting surface 215a away from the atomizer seat assembly 30. The first limiting surface 214a slides in conjunction with the top surface of the first slide rail 12b, and the second limiting surface 215a slides in conjunction with the bottom surface of the first slide rail 12b.

[0117] There is no limit to the number of the first limiting surfaces 214a, the second limiting surfaces 215a and the first slide rails 12b. It is understandable that one first slide rail 12b corresponds to one first limiting surface 214a and one second limiting surface 215a.

[0118] A sliding groove is formed between the first limiting surface 214a and the second limiting surface 215a. The sliding groove cooperates with the first sliding rail 12b, so that the switch unit 20 can generate displacement along the height direction of the atomizer 100 during the rotation process.

[0119] Specifically, as shown in Figures 6 and 7, in some embodiments, the housing assembly 10 includes a shell 11 and a first fixing member 12. The shell 11 has a cavity 11c. At the same time, the shell 11 also has a through hole 11d and a mounting groove 11e. The through hole 11d extends along the height direction of the atomizer 100 and is connected to the liquid storage space 11n. The mounting groove 11e is located at one end of the through hole 11d away from the atomizer seat assembly 30. The first fixing member 12 is arranged in the mounting groove 11e. The first fixing member 12 is provided with a first mounting hole 12a. The switch unit 20 is passed through the first mounting hole 12a and the through hole 11d.

[0120] It can be understood that, in this embodiment, the mounting channel 10a includes the through hole 11d and the first mounting hole 12a, and the first slide rail 12b is located on the hole wall of the first mounting hole 12a.

[0121] The radial dimension of the mounting groove 11e may be larger than that of the through hole 11d, so that the first mounting hole 12a and the through hole 11d can be conveniently connected to form the mounting channel 10a.

[0122] It is understandable that the shell assembly 10 is divided into an outer shell 11 and a first fixing member 12. In this way, the outer shell 11 and the first fixing member 12 can be processed and formed separately. At the same time, the first slide rail 12b is arranged on the first fixing member 12, which can facilitate the demolding of the first slide rail 12b.

[0123] As shown in Figures 6 to 8, in some embodiments, the nozzle 21 is provided with a first limiting rib 214 having a first limiting surface 214a and a second limiting rib 215 having a second limiting surface 215a. The first limiting rib 214 and the second limiting rib 215 are arranged at circumferential intervals along the switch unit 20 and extend along the height direction of the atomizer 100. A third stop portion 12c and a fourth stop portion 12d are arranged at circumferential intervals on the circumferential wall of the mounting channel 10a; in the closed state, the first limiting rib 214 abuts against the side of the third stop portion 12c facing the fourth stop portion 12d, and in the open state, the second limiting rib 215 abuts against the side of the fourth stop portion 12d facing the third stop portion 12c.

[0124] The structure of the first limiting rib 214 is not limited. For example, as shown in FIG8 , the first limiting rib 214 is a rib extending along the height direction of the atomizer 100 on the nozzle 21 , and the bottom end of the rib forms the first limiting surface 214a.

[0125] The structure of the second limiting rib 215 is not limited. For example, as shown in FIG8 , the second limiting rib 215 is also a rib on the nozzle 21 extending along the height direction of the atomizer 100, and the rib is generally L-shaped. In this way, the L-shaped rib forms a surface facing away from the atomizer seat assembly 30, thereby facilitating the formation of the second limiting surface 215a.

[0126] The third anti-rotation portion 12c and the fourth anti-rotation portion 12d are respectively used to stop the suction nozzle 21 from rotating in two opposite directions along the circumferential direction. When the user twists the suction nozzle 21 until it can no longer rotate, it means that the switch unit 20 is currently in the open state or the closed state. This makes it easy for the user to confirm and at the same time, it can effectively avoid the risk of over-rotation of the suction nozzle 21.

[0127] In addition, in this embodiment, the first limiting rib 214 and the second limiting rib 215 can convert the torsional force into an axial force that drives the suction nozzle 21 to move along the height direction of the atomizer 100, while also having the function of stopping the suction nozzle 21 from rotating, thereby making the structure of the suction nozzle 21 simpler.

[0128] Third embodiment:

[0129] As shown in Figures 9 to 11, a first limit member 11h and a first sliding surface 11i facing away from the atomizer seat assembly 30 are provided on the inner wall of the installation channel 10a, and a second limit member 211 and a second sliding surface 221a facing away from the atomizer seat assembly 30 are provided on the switch unit 20. The first sliding surface 11i and the second sliding surface 221a both extend spirally along the height direction of the atomizer 100; the first limit member 11h abuts the second sliding surface 221a, and the second limit member 211 abuts the first sliding surface 11i.

[0130] The structure of the first position-limiting member 11h is not limited. For example, as shown in FIG10 , the first position-limiting member 11h is a protruding block protruding from the inner wall of the installation channel 10a, and the second sliding surface 221a is located below the first position-limiting member 11h.

[0131] The structure of the second stopper 211 is also not limited. For example, as shown in FIG11 , the second stopper 211 is a rib extending along the height direction of the atomizer 100 on the nozzle 21 , and the bottom end of the rib abuts against the first sliding surface 11 i.

[0132] The number of the first limiting members 11h, the second limiting members 211, the first sliding surfaces 11i, and the second sliding surfaces 221a is not limited. It is understood that the number of the first limiting members 11h corresponds to the number of the second sliding surfaces 221a, and the number of the second limiting members 211 corresponds to the number of the first sliding surfaces 11i.

[0133] It can be understood that the second limit member 211 abuts against the top of the first sliding surface 11i, and the second sliding surface 221a abuts against the bottom of the first limit member 11h. In this way, the switch unit 20 can form a stable installation structure in the installation channel 10a. When a force is applied to the switch unit 20 (nozzle 21) along the height direction of the atomizer 100, the switch unit 20 (nozzle 21) will not generate displacement along the direction of the force.

[0134] As shown in Figures 10 and 11, in the process of driving the suction nozzle 21 to rotate clockwise around its axis, the first limit member 11h and the second sliding surface 221a cooperate and can convert the torsional force into an axial force that drives the suction nozzle 21 to move downward along the height direction of the atomizer 100. At the same time, since the height of the first sliding surface 11i gradually decreases in the clockwise direction, the second limit member 211 can have space for downward displacement after rotation, thereby enabling the suction nozzle 21 to move downward along the height direction of the atomizer 100 and drive the switch unit 20 to switch to the closed state.

[0135] In the process of driving the suction nozzle 21 to rotate counterclockwise around its axis, the second limit member 211 and the first sliding surface 11i cooperate and convert the torsional force into an axial force that drives the suction nozzle 21 to move upward along the height direction of the atomizer 100. At the same time, in the process of the second sliding surface 221a rotating in the counterclockwise direction, assuming that there is no displacement in the height direction of the suction nozzle 21, since the second sliding surface 221a is spirally extended, a certain gap will be generated between the first limit member 11h and the second sliding surface 221a, so that the restriction of the first limit member 11h on the second sliding surface 221a is released, and the suction nozzle 21 can move upward along the height direction of the atomizer 100 and drive the switch unit 20 to switch to the open state.

[0136] It should be noted that the second sliding surface 221a is formed in any manner. For example, as shown in FIG11 , the switch member 22 is provided with a second slide rail 221 extending spirally along the height direction of the atomizer 100 , and the top surface of the second slide rail 221 forms the second sliding surface 221a.

[0137] As shown in Figures 10 and 11, in some embodiments, a first stop 11k and a second stop 11m are provided on the inner wall of the mounting channel 10a at intervals along its circumference, and a first stop member 213 is provided on the suction nozzle 21. In the closed state, the first stop member 213 abuts against the side of the first stop 11k facing the second stop 11m, and in the open state, the first stop member 213 abuts against the side of the second stop 11m facing the first stop 11k.

[0138] There is no limit to the number of the first rotation-stopping members 213, the first rotation-stopping portions 11k, and the second rotation-stopping portions 11m. It is understood that one first rotation-stopping member 213 corresponds to one first rotation-stopping portion 11k and one second rotation-stopping portion 11m.

[0139] The structure of the first stopper 213 is not limited. For example, as shown in FIG11 , the first stopper 213 is similar in structure to the second stopper 211 , and is also a rib extending along the height direction of the atomizer 100 on the nozzle 21 .

[0140] The first rotation-stopping portion 11 k and the second rotation-stopping portion 11 m both extend inwardly along the inner wall of the installation channel 10 a , and the first rotation-stopping member 213 is disposed between the first rotation-stopping portion 11 k and the second rotation-stopping portion 11 m .

[0141] When the switch unit 20 (suction nozzle 21) rotates around its axial direction, the first stop portion 11k and the second stop portion 11m are respectively used to stop the suction nozzle 21 from rotating in two opposite directions along the circumferential direction. When the user twists the suction nozzle 21 until it can no longer rotate, it means that the switch unit 20 is currently in the open state or the closed state. This makes it easy for the user to confirm and at the same time, it can effectively avoid the risk of over-rotation of the suction nozzle 21.

[0142] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0143] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An atomizer, comprising: A housing assembly having a liquid storage space for storing an aerosol - generating matrix; An atomizing base assembly provided with an atomizing chamber and a liquid - inlet; An atomizing core disposed in the atomizing chamber for atomizing the aerosol - generating matrix to generate an aerosol; A switch unit, the switch unit includes a mouthpiece, and the switch unit is configured to have an open state and a closed state. In the open state, the liquid storage space is in communication with the liquid - inlet. In the closed state, at least a part of the liquid storage space is isolated from the liquid - inlet, and the mouthpiece and the housing assembly generate a displacement difference in the height direction of the atomizer so that the switch unit can switch between the open state and the closed state.

2. The atomizer according to claim 1, wherein, The housing assembly has a cavity and an installation channel extending in the height direction of the atomizer. At least a part of the atomizing base assembly is disposed in the cavity and defines the liquid storage space with the cavity wall. The switch unit is movably disposed in the installation channel. In a projection on a plane perpendicular to the height direction of the atomizer, the projection of the switch unit covers the projection of the liquid - inlet. In the open state, the switch unit is separated from the top wall of the atomizing base assembly. In the closed state, the switch unit abuts against the top wall of the atomizing base assembly.

3. The atomizer according to claim 2, wherein, On the inner wall of the installation channel, a first slide rail spirally extending in the height direction of the atomizer is provided. The mouthpiece has a first limiting surface facing the atomizing base assembly and a second limiting surface facing away from the atomizing base assembly. The first limiting surface is in sliding fit with the top surface of the first slide rail, and the second limiting surface is in sliding fit with the bottom surface of the first slide rail.

4. The atomizer according to claim 2, wherein, On the inner wall of the installation channel, a first limiting member and a first sliding surface facing away from the atomizing base assembly are provided. On the switch unit, a second limiting member and a second sliding surface facing away from the atomizing base assembly are provided. Both the first sliding surface and the second sliding surface spirally extend in the height direction of the atomizer. The first limiting member abuts against the second sliding surface, and the second limiting member abuts against the first sliding surface.

5. The atomizer according to claim 2, wherein a guiding groove extending in the height direction of the atomizer is provided on the inner wall of the installation channel, and a guiding rib extending in the height direction of the atomizer is provided on the mouthpiece. The guiding groove and the guiding rib are in sliding fit so that the switch unit can move in the height direction of the atomizer.

6. The atomizer according to claim 2, wherein, The switch unit further includes a switch member connected to the mouthpiece and moving synchronously with the mouthpiece. The switch member is movably disposed in the installation channel in the height direction of the atomizer. The switch member has a receiving groove opening towards the top wall of the atomizing base assembly. In the closed state, a temporary storage bin is formed by the groove wall of the receiving groove and the top wall of the atomizing base assembly. The temporary storage bin is a part of the liquid storage space.

7. The atomizer according to claim 1, wherein, The liquid storage space includes a spare chamber and a liquid discharge chamber. In the open state, the liquid discharge chamber is isolated from the spare chamber and communicated with the liquid discharge port. In the closed state, the liquid discharge chamber is communicated with the spare chamber and isolated from the liquid discharge port.

8. The atomizer according to any one of claims 1-7, wherein, The switch unit has an air outlet channel. One end of the air outlet channel away from the atomization seat assembly is communicated with the outside. In the open state, the air outlet channel is communicated with the atomization chamber. In the closed state, the air outlet channel is not communicated with the atomization chamber.

9. The atomizer according to claim 8, wherein, The atomization seat assembly is provided with a gas guiding channel. The atomization chamber is communicated with the air outlet channel through the gas guiding channel. The gas guiding channel is provided with a protrusion extending along the height direction of the atomizer. In the open state, the protrusion is located outside the air outlet channel. In the closed state, at least part of the protrusion is located in the air outlet channel and is in sealing cooperation with the peripheral wall of the air outlet channel.

10. An aerosol generating device, comprising a power supply assembly and the atomizer according to any one of claims 1-9, wherein the power supply assembly is electrically connected to the atomization core.

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