Atomizer and aerosol generating device

Abstract

The embodiment of the utility model provides an atomizer and an aerosol generating device. The atomizer comprises a shell assembly, an atomizing assembly and a ventilation channel. An air outlet channel and a liquid storage cavity are formed in the shell assembly, and the liquid storage cavity is used for storing an aerosol generating substrate. The atomization assembly comprises an atomization base and an atomization core, at least one part of the atomization base is arranged in the shell assembly, and the atomization core is arranged in the atomization base. An atomization cavity and a liquid inlet channel are formed in the atomization base, the atomization cavity is in gas communication with the gas outlet channel, a liquid inlet of the liquid inlet channel is communicated to the liquid storage cavity, and a liquid outlet of the liquid inlet channel is in liquid communication with the atomization core. An air outlet of the ventilation channel communicates with the liquid storage cavity, and an air inlet of the ventilation channel communicates with the atomization cavity. The atomization base is further provided with a liquid storage structure, the air inlet of the ventilation channel communicates with the liquid storage structure, and the liquid storage structure can be used for storing liquid flowing to the liquid storage structure. According to the atomizer, the liquid storage structure is arranged to store the overflowing aerosol generating matrix, and the liquid leakage problem can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomizers, in particular to an atomizer and an aerosol generating device. BACKGROUND

[0002] The aerosol generating device generally comprises an atomizer and a power assembly electrically connected with the atomizer. The atomizer can atomize the aerosol generating substrate stored in the liquid storage cavity under the electric driving of the power assembly, to form the aerosol for the user.

[0003] In the related art, the liquid leakage problem of the aerosol generating device occurs due to the changes in pressure, temperature and other factors during storage, transportation and use, which affects the user experience. Therefore, how to improve the liquid leakage problem of the aerosol generating device is a problem that cannot be ignored. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application aims to provide an atomizer and an aerosol generating device to solve the liquid leakage problem of the aerosol generating device during storage, transportation and use, and to improve the user experience.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application provides an atomizer, comprising:

[0006] A housing assembly, the housing assembly is internally provided with an air outlet channel and a liquid storage cavity, and the liquid storage cavity is used for storing an aerosol generating substrate;

[0007] An atomization assembly, the atomization assembly comprises an atomization seat and an atomization core, at least a part of the atomization seat is arranged in the housing assembly, and the atomization core is arranged in the atomization seat; the atomization seat is formed with an atomization cavity and a liquid inlet channel, the atomization cavity is in gas communication with the air outlet channel, the liquid inlet channel is communicated to the liquid storage cavity through a liquid inlet port, and a liquid outlet port of the liquid inlet channel is in liquid communication with the atomization core;

[0008] An air exchange channel, the air outlet of the air exchange channel is communicated with the liquid storage cavity, and the air inlet of the air exchange channel is communicated with the atomization cavity;

[0009] The atomization seat is further provided with a liquid storage structure, the air inlet of the air exchange channel is communicated to the liquid storage structure, and the liquid storage structure can be used for storing the liquid flowing to the liquid storage structure.

[0010] In an embodiment, the lowest point of the air inlet of the air exchange channel is not higher than the lowest point of the liquid storage structure.

[0011] In an embodiment, the liquid storage structure comprises a first liquid retaining area, and the first liquid retaining area can store the liquid flowing to the first liquid retaining area under the action of capillary force.

[0012] In one implementation, the first liquid retaining region includes a first capillary groove extending along a first direction, the first capillary groove penetrating a circumferential sidewall of the atomization seat, the first capillary groove being capable of storing liquid flowing to the first capillary groove under the action of capillary force, and the air inlet of the air passage is in communication with the atomization cavity through the first liquid retaining region.

[0013] In one implementation, a dimension of the first capillary groove in the height direction of the atomization cavity is not greater than 0.6 mm.

[0014] In one implementation, a lowest point of the air inlet of the air passage is not higher than a lowest point of the first capillary groove.

[0015] In one implementation, the liquid storage structure includes a second liquid retaining region, at least part of the second liquid retaining region being located between a sidewall of the atomization core and an inner wall of the atomization seat, and the second liquid retaining region being capable of storing liquid flowing to the second liquid retaining region under the action of capillary force.

[0016] In one implementation, the second liquid retaining region includes a third capillary groove, the atomization assembly includes a sealing member clamped between the atomization core and the atomization seat, the sealing member, the atomization core and the atomization seat define the third capillary groove, the second liquid retaining region is in communication with the atomization cavity, and the air inlet of the air passage is in communication with the second liquid retaining region.

[0017] In one implementation, a width of the third capillary groove is not greater than 0.6 mm.

[0018] In one implementation, a lowest point of the air inlet of the air passage is not higher than a lowest point of the third capillary groove.

[0019] In one implementation, the atomization seat is provided with an air inlet hole penetrating a circumferential sidewall of the atomization seat, the atomization cavity can be in communication with the outside of the atomizer through the air inlet hole, and in the height direction of the atomizer, a lowest point of the air inlet hole is higher than a top surface of the atomization core.

[0020] The second aspect of the present application provides an aerosol generating device, which includes a power supply assembly and the atomizer of any one of the above-mentioned implementations, and the power supply assembly is electrically connected with the atomizer.

[0021] The atomizer provided by the embodiment of the present application can keep the air pressure balance in the liquid storage cavity by setting the air exchange channel, and the two ends of the air exchange channel are communicated with the liquid storage cavity and the atomization cavity respectively. Meanwhile, the liquid storage structure with the liquid locking function is set, and the air inlet of the air exchange channel is communicated with the liquid storage structure. In this way, when the external air pressure or temperature changes, the aerosol generating substrate in the liquid storage cavity is extruded to the liquid storage structure through the air exchange channel, and the liquid storage structure can store the aerosol generating substrate, thereby improving the liquid leakage. During the process of balancing the internal and external air pressure of the atomizer, the aerosol generating substrate on the liquid storage structure can also flow back to the liquid storage cavity through the air exchange channel for normal use. In this way, the liquid leakage problem of the atomizer is solved, and the waste of the aerosol generating substrate is reduced, and the experience of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a structural schematic diagram of an atomizer according to an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a structural schematic diagram of an atomizing seat according to an embodiment of the present application;

[0024] Figure 3 FIG. 3 is a structural schematic diagram of an atomizing seat according to an embodiment of the present application;

[0025] Figure 4 FIG. 4 is a structural schematic diagram of an air exchange groove according to an embodiment of the present application;

[0026] Figure 5 FIG. 5 is a structural schematic diagram of an air inlet according to an embodiment of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1000, atomizer; 100, atomizing assembly; 1, atomizing seat; 11, atomization cavity; 12, liquid inlet channel; 13, liquid storage structure; 131, first liquid retaining area; 1311, first capillary groove; 1312, second capillary groove; 132, second liquid retaining area; 1321, third capillary groove; 14, air inlet; 2, atomizing core; 3, sealing element; 31, air exchange groove; 200, air exchange channel; 201, air outlet; 202, air inlet; 300, shell assembly; 301, air outlet channel; 302, liquid storage cavity. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the present application and the technical features in the embodiments can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as improper limitation on the present application.

[0030] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are "or" relationship.

[0031] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation, operate or be used, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0032] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0034] The present application provides an aerosol generating device, which comprises a power supply assembly and an atomizer according to any one of the embodiments of the present application, and the power supply assembly is electrically connected with the atomizer.

[0035] The aerosol generating device is used for atomizing an aerosol generating substrate to generate an aerosol for a user. The aerosol generating substrate includes, but is not limited to, a medicine, a material containing nicotine or a material not containing nicotine, etc. In the embodiments of the present application, the aerosol generating substrate may, for example, be a liquid material mainly made of plants (such as tobacco, etc.) and adding corresponding aerosol forming agents and aroma materials.

[0036] The power supply assembly is electrically connected with the atomizer, and the power supply assembly is mainly used for supplying power to the atomizer and controlling the opening or closing of the entire aerosol generating device and the like.

[0037] It should be understood by those skilled in the art that the embodiments of the present application do not specifically limit the type of the aerosol generating device. Exemplarily, the aerosol generating device can be a medical atomization device, an air humidifier, or a device such as an electronic cigarette that needs to use an atomizer.

[0038] The present application provides an atomizer 100, please refer to Figures 1 to 5 The atomizer 100 includes a housing assembly 300, an atomization assembly 100, and a ventilation passage 200. The housing assembly 300 is internally provided with an air outlet passage 301 and a liquid storage cavity 302 for storing an aerosol generating substrate. The atomization assembly 100 includes an atomization seat 1 and an atomization core 2, at least a portion of the atomization seat 1 is arranged in the housing assembly 300, and the atomization core 2 is arranged in the atomization seat 1. The atomization seat 1 is formed with an atomization cavity 11 and a liquid inlet passage 12, the atomization cavity 11 is in gas communication with the air outlet passage 301, the liquid inlet of the liquid inlet passage 12 is communicated to the liquid storage cavity 302, and the liquid outlet of the liquid inlet passage 12 is in liquid communication with the atomization core 2. The air outlet 201 of the ventilation passage 200 is communicated to the liquid storage cavity 302, and the air inlet 202 of the ventilation passage 200 is communicated to the atomization cavity 11. The atomization seat 1 is further provided with a liquid storage structure 13, the air inlet 202 of the ventilation passage 200 is communicated to the liquid storage structure 13, and the liquid storage structure 13 can be used to store the liquid flowing to the liquid storage structure 13.

[0039] The housing assembly 300 is internally provided with the liquid storage cavity 302, which can be that the housing assembly 300 defines the liquid storage cavity 302, or the housing assembly 300 and the atomization seat 1 jointly define the liquid storage cavity 302.

[0040] The housing assembly 300 is the external housing of the atomizer 100, and the air outlet passage 301 is formed in the inside of the housing assembly 300. At least a portion of the atomization seat 1 is arranged in the housing assembly 300.

[0041] The air outlet passage 301 can be located in the middle region of the housing assembly 300, or can be located on the side of the middle region of the housing assembly 300.

[0042] In some embodiments, the top of the atomization seat 1 and the inner side wall of the housing assembly 300 define the liquid storage cavity 302 for storing the aerosol generating substrate, and the liquid storage cavity 302 is arranged around the air outlet passage 301.

[0043] In other embodiments, the inside of the housing assembly 300 can also be formed with the liquid storage cavity 302.

[0044] The atomization assembly 100 refers to the structure with the atomization function in the atomizer 100, and the aerosol generating substrate generates aerosol in the atomization assembly 100.

[0045] Exemplarily, at least a part of the atomization seat 1 is arranged in the shell assembly 300, which can mean that part of the structure of the atomization seat 1 is arranged in the shell assembly 300, or the entire structure of the atomization seat 1 is arranged in the shell assembly 300.

[0046] Exemplarily, the atomization seat 1 is formed with an air inlet channel, which communicates the outside and the atomization cavity 11.

[0047] Exemplarily, the atomization seat 1 is formed with the atomization cavity 11 and a liquid inlet channel 12, the liquid inlet channel 12 communicates the liquid storage cavity 302 and the atomization core 2, and the atomization cavity 11 is in gas communication with the air outlet channel 301. The aerosol generating substrate in the liquid storage cavity 302 enters the atomization core 2 through the liquid inlet channel 12 for atomization, and the aerosol formed after atomization flows into the air outlet channel 301 together with the air flowing in through the air inlet channel, and is discharged to the outside through the air outlet 201 for use by the user.

[0048] The atomization core 2 is used to absorb the aerosol generating substrate and atomize the aerosol generating substrate to form the aerosol.

[0049] Exemplarily, the atomization core 2 has a through micro-porous structure, one side of the atomization core 2 in communication with the liquid storage cavity 302 is a liquid absorption surface, and the other side of the atomization core 2 in communication with the atomization cavity 11 is an atomization surface.

[0050] In some embodiments, the atomization core 2 is provided with an atomization structure on the atomization surface, and the specific atomization structure is not limited here, which can be a heating wire or the like.

[0051] The atomization seat 1 is the main place where the aerosol generating substrate is converted into the aerosol, and is usually made of a solid material to ensure stability during atomization. The atomization seat 1 provides support for the atomization core 2 and forms the atomization cavity 11, in which the aerosol generating substrate is converted into the aerosol.

[0052] The specific structure of the atomization seat 1 is not limited here, which can be an integrally formed structure or assembled from multiple components.

[0053] The atomization cavity 11 is a space in the atomization seat 1, and is connected to the air outlet channel 301, which is the area where the aerosol generating substrate is atomized into fine particles. During atomization, the atomization cavity 11 provides the necessary space so that the aerosol generating substrate can be dispersed into fine aerosol particles by the atomization core 2.

[0054] The specific structure of the atomization cavity 11 is determined according to the actual situation and is not limited here.

[0055] In some embodiments, a flow guide rib is arranged in the atomization cavity 11, which can guide the condensed aerosol generating substrate and the unatomized aerosol generating substrate to the atomization core 2, so as to make full use of these aerosol generating substrates and improve the use efficiency of the aerosol generating substrate.

[0056] The liquid inlet channel 12 is a channel connecting the liquid storage cavity 302 and the atomization core 2. The atomization core 2 is in liquid communication with the liquid outlet of the liquid inlet channel 12. In this way, the aerosol generating substrate can be transported from the liquid storage cavity 302 to the atomization core 2.

[0057] The air exchange channel 200 can function as an air flow passage in the atomizer 1000. The air outlet 201 of the air exchange channel 200 is in communication with the liquid storage cavity 302, and the air inlet 202 is in communication with the atomization cavity 11. The air exchange channel 200 is used to maintain the pressure balance inside the liquid storage cavity 302. The pressure balance process is as follows:

[0058] When the external air pressure or temperature changes, causing the internal air pressure of the liquid storage cavity 302 to be greater than the external ambient air pressure, the aerosol generating substrate or gas in the liquid storage cavity 302 is extruded out of the liquid storage cavity 302 through the air exchange channel 200. The internal air pressure of the liquid storage cavity 302 decreases until the internal air pressure of the liquid storage cavity 302 is equal to the external ambient air pressure, and the extrusion of the aerosol generating substrate or gas in the liquid storage cavity 302 stops. The extruded gas can be discharged to the outside, and the extruded aerosol generating substrate can be stored by the liquid storage structure 13, improving the liquid leakage situation.

[0059] When the external air pressure or temperature changes, causing the internal air pressure of the liquid storage cavity 302 to be less than the external ambient air pressure, the external gas or the aerosol generating substrate stored by the liquid storage structure 13 is extruded into the liquid storage cavity 302 until the internal air pressure of the liquid storage cavity 302 is equal to the external ambient air pressure, and the extrusion of the external gas or the aerosol generating substrate stored by the liquid storage structure 13 stops.

[0060] The liquid storage structure 13 is on the atomization seat 1 and is used to store the liquid flowing to the structure. During transportation and storage, due to changes in external air pressure or temperature, when the internal air pressure of the atomizer 1000 is less than the external ambient air pressure, the aerosol generating substrate in the liquid storage cavity 302 may overflow from the air exchange channel 200. By connecting the air inlet 202 of the air exchange channel 200 to the liquid storage structure 13, the overflowing aerosol generating substrate can be guided to the liquid storage structure 13, and the overflowing aerosol generating substrate can be stored by the liquid storage structure 13.

[0061] The specific implementation form of the liquid storage structure 13 for realizing the liquid locking function is not limited here.

[0062] Exemplarily, the liquid storage structure 13 is provided with a complex and tortuous liquid guide groove, which uses the labyrinth effect to lock the overflowing aerosol generating substrate.

[0063] Exemplarily, the liquid storage structure 13 is provided with a mechanical locking device, which uses a tiny mechanical structure such as a baffle or a valve to physically block the flow of the aerosol generating substrate.

[0064] The atomizer 1000 provided by the embodiments of the present application can keep the air pressure balance in the liquid storage cavity 302 by providing the air exchange channel 200, which is communicated with the liquid storage cavity 302 and the atomization cavity 11 at two ends. Meanwhile, the liquid storage structure 13 with the liquid locking function is provided, and the air inlet 202 of the air exchange channel 200 is communicated with the liquid storage structure 13. In this way, when the external air pressure or temperature changes, and the air pressure in the liquid storage cavity 302 is greater than the external ambient air pressure, the aerosol generating substrate in the liquid storage cavity 302 is extruded to the liquid storage structure 13 through the air exchange channel 200, and the liquid storage structure 13 can store the aerosol generating substrate, thereby improving the liquid leakage. When the internal and external air pressures of the atomizer 1000 tend to be balanced, the aerosol generating substrate on the liquid storage structure 13 can flow back to the liquid storage cavity 302 through the air exchange channel 200 for normal use. In this way, the liquid leakage problem of the atomizer 1000 is solved, and the waste of the aerosol generating substrate is reduced, thereby improving the user experience.

[0065] In an implementation manner, the lowest point of the air inlet 202 of the air exchange channel 200 is not higher than the lowest point of the liquid storage structure 13.

[0066] Here, the lowest point of the air inlet 202 of the air exchange channel 200 is not higher than the lowest point of the liquid storage structure 13. When the internal and external air pressures of the atomizer 1000 are balanced, the aerosol generating substrate leaked into the liquid storage structure 13 can be collected to the air inlet 202 of the air exchange channel 200 under the action of gravity, and flows back to the liquid storage cavity 302 through the air exchange channel 200 for use when the atomization core 2 atomizes. In this way, the residual aerosol generating substrate in the liquid storage structure 13 during normal use is reduced, and the waste of the aerosol generating substrate is reduced.

[0067] In some embodiments, referring to Figures 1 to 2 , the liquid storage structure 13 includes a first liquid retaining area 131, which is capable of storing the liquid flowing to the first liquid retaining area 131 under the action of capillary force.

[0068] The capillary force refers to a force exhibited by a liquid to move along the surface of a solid due to the surface tension at the interface between the liquid and the solid.

[0069] The first liquid retaining area 131 is an area in the liquid storage structure 13 for locking the liquid, which uses the capillary force to store the aerosol generating substrate flowing to the area. The first liquid retaining area 131 is designed to use the surface tension between the liquid and the solid contact surface to maintain the stable storage of the aerosol generating substrate through the capillary phenomenon, so as to lock the overflowed aerosol generating substrate.

[0070] The specific structure of the first liquid retaining region 131 is not limited here. The first liquid retaining region 131 should have a capillary structure to provide capillary force to store the liquid flowing to the first liquid retaining region 131.

[0071] For example, the first liquid retaining region 131 is subjected to special surface treatment to change the chemical properties or physical structure of the surface, such as a hydrophilic coating, which can enhance the capillary force and thus improve the latching of the aerosol generating substrate.

[0072] By providing the first liquid retaining region 131, the liquid flowing to the first liquid retaining region 131 is stored by the capillary phenomenon between the structure of the first liquid retaining region 131 itself and the liquid, without the need to provide an additional liquid retaining structure, which is simple in structure, easy to set up, and helps to reduce production costs.

[0073] In some embodiments, referring to Figures 1 to 2 , the first liquid retaining region 131 includes a first capillary groove 1311 extending in a first direction, the first capillary groove 1311 penetrating the peripheral sidewall of the atomizing seat 1, the first capillary groove 1311 being capable of storing the liquid flowing to the first capillary groove 1311 under the action of capillary force, and the air inlet 202 of the air exchange channel 200 being in communication with the atomizing cavity 11 through the first liquid retaining region 131, wherein the first direction intersects the height direction of the atomizing cavity 11. Here, for the convenience of description, the first direction and the height direction refer to the directions shown in Figures 1 to 2 , of course, the first direction and the height direction can also refer to any other arbitrary direction, which is not limited here.

[0074] The first capillary groove 1311 is a capillary structure provided in the first liquid retaining region 131. The first capillary groove 1311 penetrates the peripheral sidewall of the atomizing seat 1, and the first capillary groove 1311 is capable of storing the liquid flowing to the first capillary groove 1311 under the action of capillary force. That is, the first liquid retaining region 131 is in communication with the atomizing cavity 11 through the first capillary groove 1311.

[0075] For example, the first capillary groove 1311 is a micro groove or micro channel structure. These small channels can be formed on the surface of the first liquid retaining region 131 to capture and transport the aerosol generating substrate by using the capillary rise of the liquid in the small space. The design of the micro groove can be realized by etching, laser processing or other micro processing techniques to make the size and shape of the channel suitable for the required capillary action.

[0076] In some embodiments, a sealing member 3, such as a silicone sealing sleeve, is provided on the outside of the first capillary groove 1311 to seal the opening of the first capillary groove 1311 towards the side of the atomizing seat 1. In this way, the first capillary groove 1311 only needs to store the liquid by capillary force at the opening near the side of the atomizing seat 1.

[0077] The shape of the first capillary groove 1311 is not limited here, for example, it can be rectangular, trapezoidal or semicircular, to adapt to different design requirements and optimize the effect of capillary force.

[0078] The size of the first capillary groove 1311 is not limited here, the size of the groove, including width and depth, can be optimized according to the viscosity and surface tension of the aerosol generating substrate.

[0079] The air inlet 202 of the ventilation channel 200 communicates with the atomization cavity 11 through the first liquid retaining area 131. The specific setting position of the ventilation channel 200 is not limited here, for example, it can be opened on the atomization seat 1, and the ventilation channel 200 directly extends to communicate with the first liquid retaining area 131, or the ventilation channel 200 and the first liquid retaining area 131 are communicated through a pipe.

[0080] By setting the first capillary groove 1311 in the first liquid retaining area 131, the capillary force of the first capillary groove 1311 stores the liquid flowing to the first capillary groove 1311, thereby realizing the latching of the aerosol generating substrate flowing into the first liquid retaining area 131 in the first liquid retaining area 131.

[0081] In some embodiments, referring to Figures 1 to 2 , part of the groove wall of the first capillary groove 1311 is recessed to form a second capillary groove 1312, which can store the liquid flowing to the second capillary groove 1312 under the action of capillary force.

[0082] The second capillary groove 1312 is a part of the groove wall of the first capillary groove 1311, which is recessed to form a capillary structure. In this way, the contact area of the first liquid retaining area 131 and the aerosol generating substrate can be increased through the second capillary groove 1312 to improve the liquid locking effect of the first liquid retaining area 131 on the aerosol generating substrate.

[0083] The specific structure of the second capillary groove 1312 is not limited here.

[0084] Exemplarily, the groove wall of the first capillary groove 1311 has multiple recessed areas arranged at intervals along the height direction to form the second capillary groove 1312, and the first capillary groove 1311 and the second capillary groove 1312 together constitute a sawtooth-shaped capillary structure at the communication position of the first capillary groove 1311 and the atomization cavity 11. In this way, when the aerosol generating substrate flows to this position, the aerosol generating substrate fills the sawtooth-shaped structure under the action of capillary force, forms a liquid film, blocks the subsequent outflow of the aerosol generating substrate to the atomization cavity 11, and stores the leaked aerosol generating substrate in the first liquid retaining area 131.

[0085] A second capillary groove 1312 is formed by a partial indentation in the wall of the first capillary groove 1311, increasing the contact area between the first liquid-holding region 131 and the aerosol generating matrix, thereby improving the liquid-locking effect of the first liquid-holding region 131 on the aerosol generating matrix. The structure is simple. The capillary structure formed by the first capillary groove 1311 and the second capillary groove 1312 can form a liquid film together with the aerosol generating matrix at the connection between the first capillary groove 1311 and the atomization chamber 11, preventing the subsequent outflow of aerosol generating matrix into the atomization chamber 11, and storing the leaked aerosol generating matrix in the first liquid-holding region 131.

[0086] In some embodiments, please refer to Figures 1 to 2 The dimension of the first capillary groove 1311 in the height direction of the atomizing chamber 11 is no greater than 0.6 mm.

[0087] The first capillary groove 1311 has a dimension in the height direction of the atomizing chamber 11 that is no greater than 0.6 mm. For example, it can be 0.1 mm, 0.15 mm, 0.22 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, etc.

[0088] Setting the dimensions of the first capillary groove 1311 within the aforementioned range in the height direction of the atomizing chamber 11 is beneficial for the occurrence of capillary phenomena, enhances the locking effect of capillary force, and makes the aerosol generating matrix flowing into the first capillary groove 1311 more effective in forming a liquid surface, thus effectively locking in any subsequent leakage of the aerosol generating matrix.

[0089] In some embodiments, please refer to Figures 1 to 2 The lowest point of the air inlet 202 of the ventilation channel 200 is not higher than the lowest point of the first capillary groove 1311.

[0090] Here, the lowest point of the air inlet 202 of the ventilation channel 200 is not higher than the lowest point of the first capillary groove 1311. Thus, when the internal and external air pressures of the atomizer 1000 are balanced, the aerosol generation matrix leaking into the first capillary groove 1311 can, under gravity, collect at the air inlet 202 of the ventilation channel 200 and flow back into the liquid storage chamber 302 through the ventilation channel 200 for use by the atomizing core 2 during atomization. This reduces the amount of aerosol generation matrix remaining in the first capillary groove 1311 during normal use, thus reducing waste of the aerosol generation matrix.

[0091] In some embodiments, please refer to Figures 1 to 4 The liquid storage structure 13 includes a second liquid holding area 132, at least part of which is located between the side wall of the atomizing core 2 and the inner wall of the atomizing seat 1. The second liquid holding area 132 is able to store the liquid flowing to the second liquid holding area 132 under the action of capillary force.

[0092] The second liquid retaining area 132 is a region in the liquid storage structure 13 for retaining liquid, and this region uses capillary force to store the aerosol generating substrate flowing to this region. The second liquid retaining area 132 is designed to be able to use the surface tension between the liquid-solid contact surface to maintain stable storage of the aerosol generating substrate by capillary phenomenon, and to achieve the locking of the overflowed aerosol generating substrate.

[0093] The second liquid retaining area 132 is located between the side wall of the atomizing core 2 and the inner wall of the atomizing seat 1, and is formed by spacing between the side wall of the atomizing core 2 and the inner wall of the atomizing seat 1. It can also use capillary force to capture and store the aerosol generating substrate flowing to this region.

[0094] The specific structure of the second liquid retaining area 132 is not limited here.

[0095] Here, it should be noted that since the atomizing core 2 has a through micro-porous structure, the micro-porous structure communicates the liquid storage cavity 302 with the atomizing cavity 11. When the internal and external air pressure of the atomizer 1000 is balanced, the aerosol generating substrate in the liquid storage cavity 302 will not flow to the atomizing cavity 11 under the action of capillary force and air pressure.

[0096] When the atomizer 1000 is normally used, the external negative pressure can drive the aerosol generating substrate in the atomizing cavity 11 to flow out in a set amount, and when it flows out to the atomizing surface, the aerosol generating substrate is atomized to flow out in the form of aerosol from the air outlet channel 301, and the aerosol generating substrate will not be left in the atomizing cavity 11 in large quantities.

[0097] However, during transportation and storage, the aerosol generating substrate in the liquid storage cavity 302 flows out from the micro-porous structure due to changes in the external environment, and at this time the atomizing core 2 is not working and cannot consume these outflowing aerosol generating substrates, causing leakage of the aerosol generating substrate.

[0098] The second liquid retaining area 132 here can store the aerosol generating substrate that flows out and leaks from the micro-porous structure, and at the same time, since the second liquid retaining area 132 is located between the side wall of the atomizing core 2 and the inner wall of the atomizing seat 1, that is, the micro-porous structure communicates with the second liquid retaining area 132. When normally used, the aerosol generating substrate that flows out and leaks can flow back to the liquid storage cavity 302 through the micro-porous structure of the atomizing core 2.

[0099] By providing the second liquid retaining area 132, the aerosol generating substrate that cannot be consumed in the cavity of the atomizer 1000 is stored by the capillary phenomenon between the structure of the second liquid retaining area 132 itself and the liquid by capillary action. No additional liquid retaining structure is needed, the structure is simple, easy to set, and is conducive to reducing the production cost.

[0100] In some embodiments, the liquid storage structure 13 comprises a second liquid retaining region 132, and the air exchange passage 200 is arranged in the second liquid retaining region 132, which is conducive to simplifying the liquid storage structure 13 and reducing production costs. In some cases, for example, for an atomizer 1000 with high requirements for liquid leakage prevention, the liquid storage structure 13 can comprise a first liquid retaining region 131 and a second liquid retaining region 132, and the air exchange passage 200 is arranged in the first liquid retaining region 131. The arrangement of the two liquid retaining regions is conducive to improving the liquid leakage prevention capability of the atomizer 1000.

[0101] In some embodiments, referring to Figures 1 to 4 , the second liquid retaining region 132 comprises a third capillary groove 1321, and the atomization assembly 100 comprises a sealing member 3 clamped between the atomization core 2 and the atomization seat 1. The sealing member 3, the atomization core 2 and the atomization seat 1 define the third capillary groove 1321. The second liquid retaining region 132 is in communication with the atomization cavity 11, and the air inlet 202 of the air exchange passage 200 is in communication with the second liquid retaining region 132.

[0102] The sealing member 3 is used for sealing connection between the atomization core 2 and the atomization seat 1, which ensures that the aerosol generating substrate does not leak during atomization, and also helps to maintain the pressure inside the atomizer 1000 and prevent external pollutants from entering.

[0103] The sealing member 3 is clamped between the atomization core 2 and the atomization seat 1, that is, the sealing member 3, the atomization core 2 and the atomization seat 1 define a "U"-shaped groove, which is the third capillary groove 1321. The sealing member 3 constitutes the bottom of the third capillary groove 1321, and the side wall of the atomization core 2 and the inner wall of the atomization seat 1 constitute the groove wall of the third capillary groove 1321.

[0104] The specific material of the sealing member 3 is not limited here. The sealing member 3 should have a certain elasticity and deform under the extrusion of the atomization core 2 and the atomization seat 1 to fill the gap between the atomization core 2 and the atomization seat 1 and achieve a sealing effect. Exemplarily, the sealing member 3 is a silica gel pad.

[0105] The third capillary groove 1321 is a capillary structure arranged in the second liquid retaining region 132. The third capillary groove 1321 can store the liquid flowing into the third capillary groove 1321 under the action of capillary force.

[0106] The shape of the third capillary groove 1321 is not limited here, which can be rectangular, trapezoidal or semicircular, for example, to adapt to different design requirements and optimize the effect of capillary force.

[0107] The size of the third capillary groove 1321 is not limited here. The size of the groove, including the width and the depth, can be optimized according to the viscosity and surface tension of the aerosol generating substrate.

[0108] Since the third capillary groove 1321 is formed by the sealing member 3, the atomizing core 2 and the atomizing seat 1, the shape and size of the third capillary groove 1321 are determined by the sealing member 3, the atomizing core 2 and the atomizing seat 1.

[0109] The specific structure of the ventilation channel 200 is not limited here, for example, a channel can be formed on the atomizing seat 1 and communicated with the second liquid retaining area 132 to form the ventilation channel 200. In this way, the start of the ventilation channel 200 is facilitated, and since the atomizing seat 1 is a hard structure, the flow area of the ventilation channel 200 is not affected under external force.

[0110] Alternatively, a channel can be formed on the sealing member 3 and communicated with the second liquid retaining area 132 to form the ventilation channel 200.

[0111] Of course, the atomizing seat 1 and the sealing member 3 can also be provided with a channel to form the ventilation channel 200.

[0112] By providing the third capillary groove 1321 in the second liquid retaining area 132, the liquid flowing into the third capillary groove 1321 is stored by the capillary force of the third capillary groove 1321, thereby achieving the latching of the aerosol generating substrate flowing into the second liquid retaining area 132 in the second liquid retaining area 132.

[0113] In some embodiments, referring to Figures 1 to 4 , the inner wall of the sealing member 3 is provided with a ventilation groove 31, and the ventilation groove 31 and the surface of the atomizing core 2 define the ventilation channel 200.

[0114] The ventilation groove 31 is a part of the inner wall of the sealing member 3, which is designed in a concave shape and cooperates with the surface of the atomizing core 2 to define the ventilation channel 200.

[0115] The ventilation groove 31 and the surface of the atomizing core 2 define the ventilation channel 200, that is, the surface of the atomizing core 2 closes the ventilation groove 31 to form the ventilation channel 200.

[0116] It can be understood that the ventilation channel 200 is communicated with the liquid storage cavity 302 and the atomizing cavity 11, that is, the ventilation groove 31 provided on the inner wall of the sealing member 3 extends to the liquid storage cavity 302 and the atomizing cavity 11 at both ends and is communicated with them.

[0117] The specific position of the ventilation groove 31 is not limited here and is determined according to the actual situation.

[0118] Exemplarily, the ventilation groove 31 is provided on the sealing member 3 close to the atomizing side of the atomizing face of the atomizing core 2, and the ventilation groove 31 and the atomizing face together constitute the ventilation channel 200. In this way, the molding of the ventilation groove 31 is facilitated.

[0119] By arranging the ventilation groove 31 on the inner wall of the sealing member 3, the ventilation groove 31 and the surface of the atomizing core 2 define a ventilation passage 200, which can shorten the arrangement length of the ventilation passage 200, is simple in structure, and reduces the difficulty of arranging the ventilation passage 200.

[0120] In some embodiments, referring to Figures 1 to 4 , the third capillary groove 1321 has a width of no more than 0.6 mm.

[0121] The third capillary groove 1321 has a width of no more than 0.6 mm, for example, 0.1 mm, 0.15 mm, 0.22 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, etc.

[0122] Here, it should be noted that the width here refers to the distance between the side wall of the atomizing core 2 constituting the third capillary groove 1321 and the inner wall of the atomizing seat 1.

[0123] The size of the third capillary groove 1321 is arranged in the above range, which is conducive to the occurrence of capillary phenomenon, improves the locking effect of capillary force, and makes the aerosol generating substrate flowing into the third capillary groove 1321 more solution to form a liquid film, and well latches the subsequent leaked aerosol generating substrate.

[0124] In some embodiments, referring to Figures 1 to 4 , the lowest point of the air inlet 202 of the ventilation passage 200 is not higher than the lowest point of the third capillary groove 1321.

[0125] Exemplarily, the air inlet 202 of the ventilation passage 200 is arranged in the third capillary groove 1321, and the lowest point of the air inlet 202 of the ventilation passage 200 is flush with the lowest point of the third capillary groove 1321.

[0126] Here, the lowest point of the air inlet 202 of the ventilation passage 200 is not higher than the lowest point of the third capillary groove 1321, so that when the internal and external air pressures of the atomizer 1000 are balanced, the aerosol generating substrate leaked into the third capillary groove 1321 can be collected to the air inlet 202 of the ventilation passage 200 under the action of gravity, and is backflowed to the liquid storage cavity 302 through the ventilation passage 200 for use when the atomizing core 2 is atomized. In this way, the residual aerosol generating substrate in the third capillary groove 1321 during normal use is reduced, and the waste of the aerosol generating substrate is reduced.

[0127] In some embodiments, referring to Figures 1 to 5The atomization seat 1 is provided with an air inlet hole 14 penetrating through the circumferential side wall of the atomization seat 1. The atomization cavity 11 can communicate with the outside of the atomizer 1000 through the air inlet hole 14. In the height direction of the atomizer 1000, the lowest point of the air inlet hole 14 is higher than the top surface of the atomization core 2.

[0128] The air inlet hole 14 is a channel opened on the atomizer 1000 for introducing external air. The air inlet hole 14 communicates the atomization cavity 11 with the outside of the atomizer 1000, which helps to form the airflow required for atomization.

[0129] The lowest point of the air inlet hole 14 is higher than the top surface of the atomization core 2. In this way, the large-capacity aerosol generating substrate flowing out of the surface of the atomization core 2 is higher than the top surface of the atomization core 2. The inner wall of the atomization seat 1 can block the aerosol generating substrate, and the large-capacity aerosol generating substrate can be stored in the atomization cavity 11.

[0130] It can be understood that the greater the distance between the lowest point of the air inlet hole 14 and the top surface of the atomization core 2, the greater the capacity of the atomization seat 1 for storing the aerosol generating substrate in the atomization cavity 11.

[0131] At the same time, the closer the distance between the lowest point of the air inlet hole 14 and the top surface of the atomization core 2, the more sufficient the contact between the external airflow and the atomization surface of the atomization core 2, and the better the taste of the aerosol carried out.

[0132] Therefore, the distance between the lowest point of the air inlet hole 14 and the top surface of the atomization core 2 needs to be considered comprehensively according to the amount of aerosol generating substrate, i.e., the taste of the aerosol.

[0133] Here, it should be noted that for the embodiment provided with the second liquid retaining area 132, the second liquid retaining area 132 refers to the space of the atomization cavity 11 from the horizontal plane of the lowest point of the air inlet hole 14 to the top surface of the atomization core 2, which is limited by the third capillary groove 1321.

[0134] In some embodiments, the distance between the lowest point of the air inlet hole 14 and the top surface of the atomization core 2 is not greater than 1 mm, for example, it can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc.

[0135] The shape and size of the air inlet hole 14 are not limited here, for example, it can be circular, oval or slit-shaped. The size of the air inlet hole 14 will affect the air flow and the atomization effect.

[0136] The position and number of the air inlet hole 14 can be distributed on the circumferential side wall of the atomization seat 1 according to the size and design requirements of the atomizer 1000, and the number can be adjusted as needed.

[0137] By setting the air inlet 202, the airflow in the atomization cavity 11 can be increased, thereby improving the atomization efficiency of the aerosol generating substrate. The lowest point of the air inlet hole 14 being higher than the top surface of the atomization core 2 can also store a large amount of aerosol generating substrate in the atomization cavity 11.

[0138] In some embodiments, referring to Figures 1 to 5 , the air inlet hole 14 is a waist-shaped hole extending in the height direction of the atomizer 1000, and the width of the air inlet hole 14 is not greater than 0.6 mm.

[0139] The width of the air inlet hole 14 is not greater than 0.6 mm, for example, it can be 0.1 mm, 0.15 mm, 0.22 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, etc.

[0140] By setting the size of the air inlet hole 14 in the above range, the occurrence of capillary phenomenon is facilitated, the locking effect of capillary force is improved, the aerosol generating substrate flowing into the third capillary groove 1321 is more liquid to form a liquid surface, and the subsequent leaked aerosol generating substrate is well latched.

[0141] On the other hand, the air inlet hole 14 is set as a waist-shaped hole extending in the height direction of the atomizer 1000. When a large amount of aerosol generating substrate flows into the atomization cavity 11, the waist-shaped hole with a capillary structure below the liquid level of the aerosol generating substrate can form a liquid film under the action of capillary force, seal the part of the waist-shaped hole below the liquid level of the aerosol generating substrate, and block the outflow of the aerosol generating substrate. At the same time, the part of the waist-shaped hole with a capillary structure below the liquid level of the aerosol generating substrate still communicates with the outside of the atomizer 1000, and still can guide the external air into the atomization cavity 11. The structure is simple and can be applied to the case of large amount of aerosol generating substrate flowing out.

[0142] In the description of the present application, the description of the terms "in an embodiment", "in some embodiments", "in another embodiment", "in yet another embodiment", or "exemplary" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the exemplary description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0143] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, and the like made within the principle and technical scope of the present application are included in the protection scope of the present application.

Claims

1. An atomizer characterized by, The aerosol generating device comprises a housing assembly, an atomizer, and a gas exchange channel. The housing assembly is internally provided with an air outlet channel and a liquid storage cavity for storing an aerosol generating substrate. The atomizer comprises an atomizing seat and an atomizing core, at least a portion of the atomizing seat is arranged in the housing assembly, and the atomizing core is arranged in the atomizing seat. The atomizing seat is formed with an atomizing cavity and a liquid inlet channel, the atomizing cavity is in gas communication with the air outlet channel, the liquid inlet channel has a liquid inlet opening in communication with the liquid storage cavity, and the liquid outlet opening of the liquid inlet channel is in liquid communication with the atomizing core. The gas exchange channel has a gas outlet opening in communication with the liquid storage cavity and a gas inlet opening in communication with the atomizing cavity.

2. The atomizer of claim 1, wherein, The atomizing seat is further provided with a liquid storage structure, the gas inlet opening of the gas exchange channel is in communication with the liquid storage structure, and the liquid storage structure can be used to store liquid flowing to the liquid storage structure.

3. The atomizer of claim 1, wherein, The lowest point of the gas inlet opening of the gas exchange channel is not higher than the lowest point of the liquid storage structure.

4. The atomizer of claim 3, wherein, The liquid storage structure comprises a first liquid retaining area capable of storing liquid flowing to the first liquid retaining area under the action of capillary force.

5. The atomizer of claim 4, wherein, The first liquid retaining area comprises a first capillary groove extending in a first direction, the first capillary groove penetrates through the circumferential side wall of the atomizing seat, the first capillary groove is capable of storing liquid flowing to the first capillary groove under the action of capillary force, and the gas inlet opening of the gas exchange channel is in communication with the atomizing cavity through the first liquid retaining area, wherein the first direction intersects with the height direction of the atomizing cavity. The size of the first capillary groove in the height direction of the atomizing cavity is not greater than 0.6 mm; and / or 6. The atomizer of claim 1, wherein, The lowest point of the gas inlet opening of the gas exchange channel is not higher than the lowest point of the first capillary groove.

7. The atomizer of claim 6, wherein, The liquid storage structure comprises a second liquid retaining area, at least a portion of the second liquid retaining area is located between the side wall of the atomizing core and the inner wall of the atomizing seat, and the second liquid retaining area is capable of storing liquid flowing to the second liquid retaining area under the action of capillary force.

8. The atomizer of claim 7, wherein, The second liquid retaining area comprises a third capillary groove, the atomizing assembly comprises a sealing member clamped between the atomizing core and the atomizing seat, the sealing member, the atomizing core, and the atomizing seat define the third capillary groove, the second liquid retaining area is in communication with the atomizing cavity, and the gas inlet opening of the gas exchange channel is in communication with the second liquid retaining area. The width of the third capillary groove is not greater than 0.6 mm; and / or 9. The atomizer of any of claims 1-8, wherein, The lowest point of the gas inlet opening of the gas exchange channel is not higher than the lowest point of the third capillary groove.

10. An aerosol-generating device comprising: The atomizing seat is provided with an air inlet hole penetrating through the circumferential side wall of the atomizing seat, the atomizing cavity can be in communication with the outside of the atomizer through the air inlet hole, and in the height direction of the atomizer, the lowest point of the air inlet hole is higher than the top surface of the atomizing core. The aerosol generating device comprises a power supply assembly and the atomizer of any one of claims 1-9, and the power supply assembly is electrically connected with the atomizer.

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