Atomizer and aerosol generating device

Abstract

The embodiment of the utility model discloses an atomizer and an aerosol generating device. The atomizer comprises a liquid storage space, a ventilation part, a heating body and a liquid storage part. The liquid storage space is used for storing an aerosol generating substrate. An air outlet channel and a liquid discharging opening are formed in the ventilation piece, and the liquid discharging opening penetrates through the side wall of the ventilation piece. The heating body is arranged in the ventilation piece and comprises a liquid guiding piece, and the liquid guiding piece is in liquid communication with the liquid storage space through the liquid discharging opening. The liquid storage part is arranged at one end of the liquid guide part, at least part of a ventilation channel is defined between the liquid storage part and the ventilation part, and a ventilation outlet of the ventilation channel communicates with the liquid discharging opening. According to the atomizer provided by the embodiment of the invention, the heating element is arranged on the ventilation part, and the heating element can generate aerosol by heating the aerosol generating substrate; by arranging the liquid storage part, the situation of liquid leakage caused by too many aerosol generating matrixes can be improved, the aerosol generating matrixes on the liquid storage part can flow back to the liquid guide part to be atomized, the structure is simple, and the problem of liquid leakage can be solved easily.

Description

TECHNICAL FIELD

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

[0002] The aerosol generating device atomizes the aerosol generating substrate by heating to generate aerosol. The amount of aerosol generating substrate entering the heating device needs to be appropriate each time. Too much aerosol generating substrate will cause liquid leakage, and too little aerosol generating substrate will result in insufficient concentration of generated aerosol, both of which will affect the smoking experience. In related technologies, the amount of aerosol generating substrate each time is often controlled by controlling the ventilation threshold of the device, which is complex in structure. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application aims to provide an atomizer and an aerosol generating device which can simplify the structure, improve the stability of taste, and solve the problem of liquid leakage.

[0004] To achieve the above-mentioned purpose, the first aspect of the embodiments of the present application provides an atomizer, comprising:

[0005] A liquid storage space for storing an aerosol generating substrate;

[0006] A ventilation member formed with an air outlet channel and a liquid inlet, the liquid inlet penetrating through the side wall of the ventilation member;

[0007] A heating body arranged in the ventilation member, the heating body comprising a liquid guide member, the liquid guide member being in liquid communication with the liquid storage space through the liquid inlet;

[0008] A liquid storage member arranged at one end of the liquid guide member, the liquid storage member and the ventilation member defining at least part of a ventilation channel, and the ventilation outlet of the ventilation channel being communicated to the liquid inlet.

[0009] In an embodiment, the liquid storage member and the ventilation member have a first gap in the radial direction of the ventilation member, the first gap constituting at least part of the ventilation channel, and the size of the first gap being inversely proportional to the storage amount of the aerosol generating substrate by the liquid storage member.

[0010] In an embodiment, the ventilation member comprises a first ventilation pipe and a second ventilation pipe extending in a first direction, the first ventilation pipe being sleeved on the periphery of the second ventilation pipe, the first ventilation pipe and the second ventilation pipe being arranged apart in the radial direction of the ventilation member, and the liquid storage member being arranged between the first ventilation pipe and the second ventilation pipe and forming the first gap with the first ventilation pipe and / or the second ventilation pipe.

[0011] In one embodiment, the second vent tube comprises a mounting section and a gas outlet section arranged along the first direction, the gas outlet section has the gas outlet channel inside, the lower liquid port penetrates the sidewall of the first vent tube, and at least part of the liquid guide is clamped between the first vent tube and the mounting section and covers the lower liquid port.

[0012] In one embodiment, the liquid guide comprises a first liquid guide and a second liquid guide arranged radially and stacked along the vent.

[0013] In one embodiment, the first liquid guide is arranged between the first vent tube and the second vent tube, and the second liquid guide is arranged in the mounting section; the second vent tube is formed with an opening penetrating the sidewall of the mounting section, and the first liquid guide covers the lower liquid port and the opening and is in liquid communication with the second liquid guide through the opening.

[0014] In one embodiment, the first liquid guide comprises a first liquid sub-guide and a second liquid sub-guide arranged radially and stacked along the vent, and the density of the second liquid sub-guide is greater than that of the first liquid sub-guide.

[0015] In one embodiment, the first liquid guide is in interference fit with the inner wall of the first vent tube; and / or,

[0016] the first liquid guide is in interference fit with the second liquid guide; and / or,

[0017] the first liquid sub-guide is in interference fit with the second liquid sub-guide.

[0018] In one embodiment, the density of the first liquid sub-guide is greater than or equal to 0.06 g / cm 3 and less than or equal to 0.1 g / cm 3 ; and / or,

[0019] the density of the second liquid sub-guide is greater than or equal to 0.1 g / cm 3 and less than or equal to 0.15 g / cm 3 .

[0020] In one embodiment, the liquid storage is arranged between the first vent tube and the gas outlet section; the liquid storage is arranged spaced apart from the outer wall of the gas outlet section to form the first gap, and the first gap constitutes part of the gas exchange channel.

[0021] In one embodiment, the size of the overlapping area of the liquid storage and the first vent tube in the first direction is greater than or equal to 5 mm and less than or equal to 50 mm; and / or,

[0022] The distance between the liquid storage member and the outer wall of the air outlet section is greater than 0 mm and less than or equal to 1 mm.

[0023] In an embodiment, the liquid storage member is in interference fit with the inner wall of the first air guide pipe; and / or,

[0024] The liquid storage member and the liquid guide member form part of the air exchange channel.

[0025] In an embodiment, the atomizer comprises a fixing seat, which is arranged in the air guide member and located at the end of the heating element away from the liquid storage member.

[0026] In an embodiment, the air exchange channel comprises a first air exchange section, a second air exchange section and a third air exchange section, the first gap constitutes the first air exchange section, the second air exchange section is formed between the liquid storage member and the liquid guide member, and the third air exchange section is formed between the liquid guide member and the first air guide pipe and communicated to the lower liquid outlet.

[0027] The second aspect of the present application provides an aerosol generating device, comprising an atomizer and a power supply assembly, wherein the power supply assembly is electrically connected to the atomizer, and the atomizer comprises:

[0028] A liquid storage space for storing aerosol generating substrate;

[0029] An air guide member, which forms an air outlet channel and a lower liquid outlet penetrating through the side wall of the air guide member;

[0030] A heating element arranged in the air guide member, wherein the heating element comprises a liquid guide member, and the liquid guide member is in liquid communication with the liquid storage space through the lower liquid outlet;

[0031] A liquid storage member arranged at one end of the liquid guide member, wherein the liquid storage member and the air guide member define at least part of an air exchange channel, and an air exchange outlet of the air exchange channel is communicated to the lower liquid outlet.

[0032] In an embodiment, the aerosol generating device comprises a housing, at least part of the power supply assembly is arranged in the housing, and at least part of the atomizer is arranged in the housing; or

[0033] The power supply assembly and the atomizer are detachably connected.

[0034] The atomizer and aerosol generating device provided in this application, by setting a heating element on the ventilation component, and a liquid guiding component guiding the aerosol generating matrix in the storage space to the heating element, can generate aerosol by heating the aerosol generating matrix. By setting a storage component, excess aerosol generating matrix on the liquid guiding component can be stored in the storage component, allowing the liquid guiding component to maintain a certain amount of aerosol generating matrix. This reduces leakage caused by excessive aerosol generating matrix while maintaining a certain amount of vapor. Furthermore, by forming an air exchange channel between the storage component and the ventilation component, the size of the air exchange channel can be controlled by the amount of aerosol generating matrix stored in the storage component, thereby adjusting the intake resistance of the external air. This allows the aerosol generating matrix on the storage component to flow back to the liquid guiding component for atomization. This simple structure can improve the leakage problem while ensuring the liquid dispensing speed and improving the stability of the flavor. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the atomizer according to an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the internal structure of the ventilation component according to an embodiment of this application;

[0037] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A;

[0038] Figure 4 This is a schematic diagram of the structure of the first vent pipe according to an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the structure of the second vent pipe according to an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures

[0041] 100. Atomizer; 1. Liquid storage space; 2. Ventilation component; 21. First vent pipe; 211. Liquid outlet; 22. Second vent pipe; 221. Mounting section; 2211. Opening; 222. Air outlet section; 2221. Air outlet channel; 3. Heating element; 31. Liquid guide component; 311. First liquid guide component; 3111. First liquid guide sub-component; 3112. Second liquid guide sub-component; 312. Second liquid guide component; 32. Heating element; 4. Liquid storage component; 41. First gap; 5. Air exchange channel; 51. Air exchange outlet; 52. First air exchange section; 53. Second air exchange section; 54. Third air exchange section; 6. Fixing base; 61. First fixing component; 62. Second fixing component. Detailed Implementation

[0042] 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 implementation should be understood as the explanation and illustration of the purpose of the present application, and should not be regarded as improper limitation on the present application.

[0043] In the description of the present application, the "first direction", the orientation or the positional relationship is based on the drawings Figure 1 and Figure 2 The orientation or the positional relationship shown in the drawings needs to be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not indicative or suggestive of the devices or elements indicated 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. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0044] The present application provides an aerosol generating device, which comprises a power supply assembly and the atomizer 100 of any embodiment of the present application, and the power supply assembly is electrically connected with the atomizer 100.

[0045] The aerosol generating device is used to atomize the aerosol generating substrate to generate aerosol for a user to smoke. The aerosol generating substrate includes, but is not limited to, a medicine, a nicotine-containing material or a nicotine-free material, etc. Here, the aerosol generating device generally refers to a liquid or a flowable substance similar to a liquid comprising the above-mentioned materials.

[0046] The atomizer 100 is used to store the aerosol generating substrate and atomize the aerosol generating substrate to form the aerosol for the user to smoke, and the power supply assembly is connected with the atomizer 100 to supply power for the atomizer 100 and control the operation of the atomizer 100.

[0047] In some embodiments, the aerosol generating device comprises a housing, at least part of the power supply assembly is arranged in the housing, and at least part of the atomizer 100 is arranged in the housing.

[0048] Here, the housing is a structure constituting the appearance of the aerosol generating device and having a protective function. The housing accommodates other components of the aerosol generating device and isolates and protects the other components from the outside.

[0049] The specific structure of the housing is not limited here and is determined according to the design shape of the aerosol generating device. The housing can be a structure integrally formed, or can be an integral whole formed by assembling after being formed in parts, which is not limited here.

[0050] The power supply assembly and the atomizer 100 are at least partially arranged in the housing, for example, can be completely arranged in the housing, so that the protection of the power supply assembly and the atomizer 100 is improved. The power supply assembly and / or the atomizer 100 can also have part of the structure exposed outside the housing.

[0051] It should be noted that, since the power assembly and the atomizer 100 are at least partially arranged in the shell, that is, after assembly, the power assembly, the atomizer 100 and the shell together form an integral whole and cannot be disassembled.

[0052] Of course, the power assembly and the atomizer 100 can also be an integral structure.

[0053] Exemplarily, the aerosol production device is a disposable electronic cigarette, the shell is integrally formed, and the power assembly and the atomizer 100 are arranged in the shell in a non-detachable manner. In this way, the appearance of the disposable electronic cigarette is improved. At the same time, the integrally formed and non-detachable structure is conducive to improving the sealing performance of the electronic cigarette, and after the user finishes smoking and discards it, the pollution of the internal pollutants of the electronic cigarette to the environment can also be reduced.

[0054] In some embodiments, the power assembly and the atomizer 100 are detachably connected.

[0055] The specific structure of detachable connection is not limited here, for example, it can be achieved by means of buckle structure, threaded structure or magnetic attraction structure, etc. to realize quick disassembly and connection.

[0056] By detachably connecting the power assembly and the atomizer 100, on the one hand, it is convenient for maintenance and replacement when the power assembly and the atomizer 100 fail, and subsequent upgrading. On the other hand, it is convenient for the replacement of the power assembly battery or the supplement of the aerosol production substrate in the atomizer 100.

[0057] The atomizer 100 provided in the present application, please refer to Figures 1 to 3 , the atomizer 100 includes a liquid storage space 1, a ventilation member 2, a heating body 3 and a liquid storage member 4. The liquid storage space 1 is used for storing the aerosol generating substrate. The ventilation member 2 is formed with an air outlet passage 2221 and a lower liquid port 211, and the lower liquid port 211 penetrates through the side wall of the ventilation member 2. The heating body 3 is arranged in the ventilation member 2, and the heating body 3 includes a liquid guide member 31, which is in liquid communication with the liquid storage space 1 through the lower liquid port 211. The liquid storage member 4 is arranged at one end of the liquid guide member 31, and at least part of the gas exchange passage 5 is defined between the liquid storage member 4 and the ventilation member 2, and the gas exchange outlet 51 of the gas exchange passage 5 is communicated to the lower liquid port 211.

[0058] The liquid storage space 1 is used for storing the aerosol generating substrate, the heating body 3 is arranged in the ventilation member 2, the ventilation member 2 is provided with the lower liquid port 211, the lower liquid port 211 penetrates through the side wall of the ventilation member 2, and the liquid guide member 31 on the heating body 3 is in liquid communication with the liquid storage space 1 through the lower liquid port 211. That is, the liquid storage space 1 is communicated with the ventilation member 2 through the lower liquid port 211, the aerosol generating substrate in the liquid storage space 1 enters the ventilation member 2 through the lower liquid port 211, is transferred to the liquid guide member 31, and the heating member 32 atomizes the aerosol generating substrate to generate the aerosol.

[0059] The communication mode between the liquid storage space 1 and the lower liquid outlet 211 is not limited here, for example, the part of the breather 2 provided with the lower liquid outlet 211 can be directly arranged in the liquid storage space 1, or the liquid storage space 1 can be communicated with the lower liquid outlet 211 through a structure such as a liquid guide pipe with a flow guide channel.

[0060] In order to facilitate the aerosol generating substrate flowing into the breather 2 from the lower liquid outlet 211, the position of the lower liquid outlet 211 is usually arranged at a position close to the bottom of the liquid storage space 1. Of course, when a device such as a liquid pumping pump is arranged to actively transport liquid, the lower liquid outlet 211 can also not be arranged below the liquid level of the aerosol generating substrate.

[0061] The structure of the lower liquid outlet 211 is not limited here, for example, a round hole, a square hole, a waist-shaped hole and the like can be opened in the side wall of the breather 2.

[0062] The number of lower liquid outlets 211 is not limited here, and the number of lower liquid outlets 211 can be one or multiple, and multiple lower liquid outlets 211 are arranged at intervals along the circumference of the breather 2.

[0063] For example, referring to Figure 4 , the lower liquid outlet 211 is a circular hole, and six lower liquid outlets 211 are arranged at intervals along the circumference of the breather 2. In this way, multiple lower liquid outlets 211 not only facilitate the aerosol generating substrate in the liquid storage space 1 to enter the breather 2 in a larger amount to improve the atomization efficiency, but also can avoid the situation that any one lower liquid outlet 211 is blocked and cannot be atomized.

[0064] The breather 2 can be used to mount the heating body 3 and provide an atomization place for the heating body 3. The heating body 3 obtains the aerosol generating substrate from the outside of the breather 2 through the lower liquid outlet 211 of the breather 2, completes the atomization work in the inside of the breather 2, and generates the aerosol.

[0065] The specific shape of the breather 2 is not limited here, and the shape of the breather 2 includes but is not limited to a hollow cylindrical shape, a hollow elliptical cylindrical shape, or a polygonal shape with rounded corners, such as a rounded triangular shape.

[0066] In some embodiments, the breather 2 is provided with two holes with different cross-sectional areas along the first direction, and the connection part of the two holes forms a stepped surface, and the heating body 32 is arranged in the breather 2 by abutting against the stepped surface.

[0067] The breather 2 is provided with an air outlet channel 2221, which is used to guide and discharge the aerosol generated after being atomized in the breather 2. For example, the air outlet channel 2221 is communicated with the mouthpiece of the atomizer 100 to guide the aerosol to the mouthpiece for the user to smoke.

[0068] The specific structure of the air outlet channel 2221 is not limited here, for example, the air outlet channel 2221 can be a structure of the air passage 2 extending to the outside of the atomizer 100, and the air outlet channel 2221 directly communicates with the outside of the atomizer 100, or the air outlet channel 2221 is formed inside the atomizer 100, and an additional air guide structure is provided to communicate the air outlet channel 2221 with the outside of the atomizer 100.

[0069] The heating body 3 refers to a device in the air passage 2 for atomizing the aerosol generating substrate into aerosol. The heating body 3 includes a liquid guide 31 that absorbs and stores the aerosol generating substrate and continuously provides the heating element 32 with the aerosol generating substrate required for atomization.

[0070] In some embodiments, the heating element 32 is arranged inside the liquid guide 31, and the heating element 32 heats the aerosol generating substrate on the liquid guide 31 to generate aerosol. The specific structure of the heating element 32 is not limited here, for example, it can be a metal mesh structure, which can better contact the aerosol generating substrate on the liquid guide 31 and improve the atomization efficiency.

[0071] The liquid guide 31 is made of a material with good liquid absorption and storage performance, and the specific material is not limited here. Generally, the liquid guide 31 is made of liquid guide cotton, and the specific material of the liquid guide cotton is not limited. For example, the material of the liquid guide cotton can be natural organic cotton or organic synthetic high polymer porous foam cotton. The liquid guide cotton is made of cotton fiber material, which can stably store part of the aerosol generating substrate and quickly guide the aerosol generating substrate to the heating element 32. The heating element 32 heats the aerosol generating substrate on the liquid guide cotton in the powered state to form aerosol.

[0072] In some embodiments, the liquid guide 31 can be a composite material formed by weaving liquid guide cotton and metal mesh together. The metal material has good heat conduction performance, that is, the metal mesh layer can be quickly heated, so that heat can be quickly transferred to the aerosol generating substrate on the liquid guide 31, improving the atomization efficiency.

[0073] The aerosol generating substrate in the liquid storage space 1 is continuously guided out through the liquid guide 31 under the action of external negative pressure. Due to the change of negative pressure, the amount of aerosol generating substrate guided out of the liquid guide 31 is excessive for atomization. A liquid storage member 4 is arranged at one end of the liquid guide 31 to store the excess aerosol generating substrate on the liquid guide 31, so as to control the amount of aerosol generating substrate on the liquid guide 31 to meet the required amount for atomization. The liquid storage member 4 should have good liquid storage performance, and the specific material is not limited here. In order to reduce production cost, the liquid storage member 4 generally also uses the above-mentioned liquid storage cotton as the manufacturing material.

[0074] When the aerosol generating substrate in the liquid storage space 1 is not consumed continuously, the negative pressure in the liquid storage space 1 increases, and when the negative pressure inside the liquid storage space 1 is greater than the external negative pressure, the liquid guide 31, the liquid storage 4 and the external air are drawn into the liquid storage space 1 under the action of the negative pressure in the liquid storage space 1. The air exchange channel 5 is a gas flow channel for external gas flowing into the liquid storage space 1 in the atomizer 100, and the air exchange channel 5 communicates the air exchange outlet 51 to the lower liquid port 211, that is, the air exchange channel 5 communicates the liquid storage space 1 with the outside of the atomizer 100, and the specific structure of the air exchange channel 5 is not limited here.

[0075] The liquid storage 4 and the breather 2 define part of the air exchange channel 5, and the specific position and forming method of the part of the air exchange channel 5 are not limited here. By forming part of the air exchange channel 5 through the liquid storage 4, the structure of the air exchange channel 5 can be changed by changing the structure of the liquid storage 4.

[0076] The atomizer 100 provided in the present application can generate aerosol by heating the aerosol generating substrate through the heating body 3 arranged on the breather 2, and the liquid guide 31 guides the aerosol generating substrate in the liquid storage space 1 to the heating element 32 of the heating body 3. By arranging the liquid storage 4, the excess aerosol generating substrate on the liquid guide 31 can be stored on the liquid storage 4, so that the liquid guide 31 can maintain a certain amount of aerosol generating substrate, while having a certain amount of smoke, reducing the risk of liquid leakage due to too much aerosol generating substrate. Furthermore, by forming the air exchange channel 5 between the liquid storage 4 and the breather 2, the size of the air exchange channel 5 can be controlled by the amount of aerosol generating substrate stored in the liquid storage 4, so as to adjust the suction resistance of the external air, and then the aerosol generating substrate on the liquid storage 4 can flow back to the liquid guide 31 for atomization. This structure is simple, and can ensure the liquid flow speed and improve the stability of the taste while improving the problem of liquid leakage.

[0077] In some embodiments, referring to Figures 1 to 3 , the liquid storage 4 and the breather 2 have a first gap 41 in the radial direction of the breather 2, the first gap 41 constitutes at least part of the air exchange channel 5, and the size of the first gap 41 is inversely proportional to the storage amount of the aerosol generating substrate in the liquid storage 4.

[0078] In the related art, in the atomizer 100 using clear oil to generate aerosol, it is necessary to control the amount of aerosol generating substrate on the heating element 32 each time of atomization. When the amount of aerosol generating substrate on the heating element 32 is too much, the atomization area will grow an oil film, and the oil film will generate bubbles in the suction state, and the bubbles will break during suction, and in serious cases, the bubbles will break and cause the aerosol generating substrate to splash into the mouth of the user, causing liquid leakage and affecting the suction experience. When the amount of aerosol generating substrate on the heating element 32 is too small, the concentration of the aerosol generated by atomization is insufficient, causing the taste to decay. The current technology often uses an increase in the air exchange structure to control the air exchange threshold. In order to solve the problem of liquid leakage, the air exchange threshold is usually set to be relatively high, but this will cause air exchange difficulty, so that the amount of aerosol generating substrate on the heating element 32 is always less than the appropriate amount, causing the taste to decay. In order to solve the problem of suction taste decay, the air exchange threshold is often reduced, but this will cause the amount of aerosol generating substrate on the heating element 32 to be too much, causing the problem of liquid leakage.

[0079] The related art cannot solve the problems of taste decay and liquid leakage at the same time, and can only balance one of them, affecting the use effect of the atomizer 100.

[0080] The present embodiment sets a liquid storage member 4, which is a substance that will expand after absorbing external substances and increase in volume. The specific material is not limited here, for example, it can be the liquid storage cotton described above.

[0081] Here, it should be noted that the size of the first gap 41 is inversely proportional to the storage amount of the aerosol generating substrate of the liquid storage member 4, that is, as the storage amount of the aerosol generating substrate stored by the liquid storage member 4 increases, the size of the first gap decreases in such an inverse trend. The inverse proportion here can be strictly inverse or approximately inverse. The degree of change of this inverse trend is determined by the amount of aerosol generating substrate required for atomization in actual use and the material properties of the liquid storage member 4, and is not limited here.

[0082] When excess aerosol generating substrate is generated on the liquid guide member 31, in order to control the amount of aerosol generating substrate on the liquid guide member 31, the liquid storage member 4 continuously stores the excess aerosol generating substrate, causing the volume of the liquid storage member 4 to continuously increase, the first gap 41 formed by the liquid storage member 4 and the ventilation member 2 to decrease, and the flow area of the air exchange channel 5 to continuously decrease.

[0083] When the user finishes a suction process at a time, the external negative pressure disappears, and it is necessary to ensure that the amount of aerosol generating substrate on the heating body 3 is appropriate for the next time the user sucks.

[0084] When the current puffing is over, the excess amount of aerosol generating substrate on the heating element 3 and the excess amount of aerosol generating substrate stored on the liquid storage member 4, in order to control the amount of aerosol generating substrate drawn from the liquid storage space 1 and the amount of aerosol generating substrate originally remaining on the heating element 3 when the next user puffs, the amount of aerosol generating substrate in the liquid storage space 1 needs to be increased during the backflow process.

[0085] When the current puffing is over, the excess amount of aerosol generating substrate on the heating element 3 and the excess amount of aerosol generating substrate stored on the liquid storage member 4, in order to control the amount of aerosol generating substrate drawn from the liquid storage space 1 and the amount of aerosol generating substrate originally remaining on the heating element 3 when the next user puffs, the amount of aerosol generating substrate in the liquid storage space 1 needs to be increased during the backflow process.

[0086] When the negative pressure in the liquid storage space 1 acts, the aerosol generating substrate on the liquid storage member 4 and the external air begin to backflow. Since the negative pressure in the liquid storage space 1 is constant, the total volume of the backflowing aerosol generating substrate and external air is constant. Since the size of the first gap 41 is inversely proportional to the storage amount of the aerosol generating substrate on the liquid storage member 4, that is, the more the excess amount of aerosol generating substrate on the liquid storage member 4, the smaller the flow area of the air exchange channel 5, the greater the air backflow resistance, and the smaller the air backflow amount, so the more the aerosol generating substrate backflowed.

[0087] In short, the storage amount of the aerosol generating substrate on the liquid storage member 4 is inversely proportional to the backflow amount of the liquid storage space 1, and the liquid storage member 4 is in liquid communication with the liquid guide member 31, that is, when the aerosol generating substrate on the liquid guide member 31 increases, the liquid storage space 1 can backflow more aerosol generating substrate, meeting the actual use scenario requirement that the aerosol generating substrate on the liquid guide member 31 needs to be reduced when the aerosol generating substrate on the liquid guide member 31 is too much, so that the amount of aerosol generating substrate on the heating element 32 can always be kept at a suitable value, while the taste attenuation and liquid leakage problems are solved, the structure is simple, and different users can adapt to different puffing conditions.

[0088] In some embodiments, referring to Figures 1 to 3 , the air passage member 2 includes a first air passage tube 21 and a second air passage tube 22 both extending along the first direction, the first air passage tube 21 is sleeved on the circumferential side of the second air passage tube 22, the first air passage tube 21 and the second air passage tube 22 are arranged in a radial direction of the air passage member 2, and the liquid storage member 4 is arranged between the first air passage tube 21 and the second air passage tube 22 and forms a first gap 41 with the first air passage tube 21 and / or the second air passage tube 22.

[0089] Exemplarily, the first air passage 21 and the second air passage 22 are both steel pipes, the diameter of the second air passage 22 is smaller than that of the first air passage 21, the first air passage 21 is sleeved on the side of the second air passage 22, and the center lines of the first air passage 21 and the second air passage 22 coincide, so as to form an annular area. The liquid storage member 4 is a tubular structure arranged between the first air passage 21 and the second air passage 22, and a first gap 41 is formed between the liquid storage member 4 and the first air passage 21 and / or the second air passage 22.

[0090] The distance between the first air passage 21 and the second air passage 22 is determined according to the size of the liquid storage member 4 and the size of the first gap 41, which is not limited herein.

[0091] The inner wall of the liquid storage member 4 and the outer wall of the second air passage 22 form the first gap 41. The outer wall of the liquid storage member 4 and the inner wall of the first air passage 21 can also form the first gap 41. Of course, the inner wall of the liquid storage member 4 and the outer wall of the second air passage 22 and the outer wall of the liquid storage member 4 and the inner wall of the first air passage 21 can form two first gaps 41.

[0092] By arranging the first air passage 21 and the second air passage 22, the first air passage 21 and the second air passage 22 are arranged radially, and the liquid storage member 4 is arranged in the interval, so as to form the first gap 41. By controlling the size of the liquid storage member 4 along the radial direction of the air passage 2, the size of the first gap 41 is controlled, which is simple in structure and low in production cost.

[0093] In some embodiments, referring to Figures 1 to 5 The second air passage 22 comprises a mounting section 221 and an air outlet section 222 arranged along the first direction, and the air outlet section 222 has an air outlet channel 2221 inside. The liquid outlet 211 penetrates the side wall of the first air passage 21, and at least part of the liquid guide 31 is clamped between the first air passage 21 and the mounting section 221 and covers the liquid outlet 211.

[0094] The mounting section 221 refers to a structure on the second air passage 22 for clamping the liquid guide 31, and the mounting section 221 is used to assist in mounting the liquid guide 31. The first air passage 21 and the mounting section 221 of the second air passage 22 form a gap, and the liquid guide 31 is clamped between the gap.

[0095] The length of the mounting section 221 is determined according to the length of the clamped liquid guide 31, which is not limited herein.

[0096] The liquid outlet 211 is arranged on the side wall of the first air passage 21, and the liquid guide 31 covers the liquid outlet 211, so that the aerosol generating substrate can enter the first air passage 21 through the liquid outlet 211. The aerosol generating substrate contacts the liquid guide 31 arranged in the first air passage 21, and the liquid guide 31 absorbs and transmits the aerosol generating substrate.

[0097] The out-gas section 222 refers to a structure formed by extending the mounting section 221 along the first direction, and the out-gas section 222 has an out-gas passage 2221 for guiding the aerosol generated by atomization of the heating body 3.

[0098] In some embodiments, the heating member 32 in the heating body 3 is arranged in the mounting section 221, so that the heating member 32 is in communication with the out-gas passage 2221, the place where the aerosol generated by heating the aerosol generating substrate is located in the second air passage 22, and the aerosol is discharged through the out-gas passage 2221, so as to regulate the discharge path of the aerosol in the atomizer 100.

[0099] By arranging the second air passage 22 with the mounting section 221 and the out-gas section 222, on the one hand, the mounting section 221 can assist the first air passage 21 in fixing and installing the liquid guide 31. On the other hand, by guiding the out-gas passage 2221 formed by the out-gas section 222, the discharge path of the aerosol in the atomizer 100 is regulated.

[0100] In some embodiments, referring to Figures 1 to 5 , the liquid guide 31 includes a first liquid guide 311 and a second liquid guide 312 arranged in a radial stack along the air passage 2.

[0101] The first liquid guide 311 and the second liquid guide 312 are both structures for absorbing and transporting the aerosol generating substrate. Here, the stack refers to the first liquid guide 311 and the second liquid guide 312 being stacked along the radial direction of the air passage 2, and the first liquid guide 311 can be in contact with the second liquid guide 312, and the aerosol generating substrate can be transported between the first liquid guide 311 and the second liquid guide 312 through the stacked contact surface.

[0102] The specific manner of stacking the first liquid guide 311 and the second liquid guide 312 is not limited here, for example, the first liquid guide 311 can be sleeved on the outer periphery of the second liquid guide 312, that is, the first liquid guide 311 and the second liquid guide 312 are annular.

[0103] By arranging the first liquid guide 311 and the second liquid guide 312 in a radial stack, the first liquid guide 311 and the second liquid guide 312 form the liquid guide 31, and by changing the density or structure of the first liquid guide 311 and the second liquid guide 312, the movement direction of the aerosol generating substrate can be controlled.

[0104] In some embodiments, referring to Figures 1 to 5The first liquid guide 311 is arranged between the first air passage 21 and the second air passage 22, and the second liquid guide 312 is arranged in the mounting section 221. The second air passage 22 is formed with an opening 2211 penetrating the side wall of the mounting section 221, and the first liquid guide 311 covers the lower liquid port 211 and the opening 2211 and is in liquid communication with the second liquid guide 312 through the opening 2211.

[0105] The first liquid guide 311 is arranged between the first air passage 21 and the second air passage 22, and the second liquid guide 312 is arranged in the mounting section 221. The second air passage 22 is formed with an opening 2211 penetrating the side wall of the mounting section 221, and the first liquid guide 311 covers the lower liquid port 211 and the opening 2211 and is in liquid communication with the second liquid guide 312 through the opening 2211.

[0106] The second liquid guide 312 is in contact with the heating element 32 and is used to provide the aerosol generating substrate required for atomization for the heating element 32. The second liquid guide 312 is in communication with the first liquid guide 311 through the opening 2211, and the aerosol generating substrate on the first liquid guide 311 is transferred to the heating element 32.

[0107] The opening 2211 is a structure provided on the mounting section 221 for exposing the second liquid guide 312, and the structure of the opening 2211 is not limited here. The opening 2211 is arranged as much as possible to increase the area of the opening 2211 and improve the exposure area of the second liquid guide 312, thereby improving the liquid communication effect of the first liquid guide 311 and the second liquid guide 312, without affecting the stability of the installation of the second liquid guide 312.

[0108] Exemplarily, please refer to Figure 5 The opening 2211 is a plurality of rectangular holes spaced apart along the circumference of the mounting section 221 on the mounting section 221.

[0109] The liquid communication mode of the first liquid guide 311 and the second liquid guide 312 is not limited here, for example, the first liquid guide 311 and the second liquid guide 312 can be in direct contact, or the first liquid guide 311 and the second liquid guide 312 can transmit liquid through an intermediate medium or structure.

[0110] It can be understood that the first liquid guide 311 is arranged between the first air passage 21 and the second air passage 22, and the second liquid guide 312 is arranged in the mounting section 221, that is, when the first liquid guide 311 and the second liquid guide 312 are arranged in layers, the structure of the mounting section 221 is also arranged between the first liquid guide 311 and the second liquid guide 312.

[0111] By setting the first liquid guide 311 between the first air passage 21 and the second air passage 22, and setting the second liquid guide 312 in the mounting section 221, the liquid guide 31 can be fixed in the air passage 2 in sections while ensuring the liquid guiding effect of the liquid guide 31, thereby improving the stability of the installation of the liquid guide 31. On the other hand, by dividing the liquid guide 31 into the first liquid guide 311 and the second liquid guide 312, the second liquid guide 312 is in contact with the heating element 32, and when the heating element 32 fails or the contact surface with the liquid guide 31 is damaged due to overuse, only the second liquid guide 312 needs to be replaced, thereby reducing maintenance costs.

[0112] In some embodiments, referring to Figures 1 to 3 , the first liquid guide 311 includes a first liquid sub-guide 3111 and a second liquid sub-guide 3112 arranged in a radial direction of the air passage 2, and the second liquid sub-guide 3112 has a density greater than that of the first liquid sub-guide 3111.

[0113] Here, the first liquid sub-guide 3111 refers to the portion of the first liquid guide 311 covering the side of the liquid outlet 211, and the second liquid sub-guide 3112 refers to the portion of the first liquid guide 311 covering the side of the opening 2211. That is, the first liquid sub-guide 3111 is in communication with the liquid storage space 1 through the liquid outlet 211, and the aerosol generating substrate in the liquid storage space 1 is guided out of the liquid storage space 1 through the first liquid sub-guide 3111, and then guided from the first liquid sub-guide 3111 to the second liquid sub-guide 3112, and the second liquid sub-guide 3112 guides the aerosol generating substrate to the second liquid guide 312 through the opening 2211.

[0114] The specific manner in which the first liquid sub-guide 3111 and the second liquid sub-guide 3112 are arranged in layers is not limited here, and exemplary, referring to Figures 2 to 3 , the first liquid sub-guide 3111 is sleeved on the outer periphery of the second liquid sub-guide 3112, that is, the first liquid sub-guide 3111 and the second liquid sub-guide 3112 are annular, and the first liquid sub-guide 3111 is sleeved on the outer periphery of the second liquid sub-guide 3112 to form a composite structure.

[0115] In some embodiments, the first liquid guide 311 is a one-piece structure, and the first liquid guide includes two structures arranged in layers in the radial direction of the air passage 2 and having different densities, the structure with a smaller density serving as the second liquid sub-guide 3112, and the structure with a larger density serving as the first liquid sub-guide. Thus, one-piece molding is conducive to reducing the number of parts and reducing the assembly workload.

[0116] Here, the density of the second liquid sub-guide 3112 is greater than that of the first liquid sub-guide 3111 on the premise that the first liquid sub-guide 3111 and the second liquid sub-guide 3112 are the same kind and structure of liquid absorbing material.

[0117] Exemplarily, taking the first liquid guide 3111 and the second liquid guide 3112 as examples of the liquid guide cotton, here, the density of the second liquid guide 3112 is greater than that of the first liquid guide 3111. For the liquid guide cotton, the greater the density, the more concentrated the liquid absorption structure inside, and the stronger the ability of the liquid guide cotton to absorb liquid substances. When the second liquid guide 3112 is in contact with the first liquid guide 3111, the aerosol generating substrate on the first liquid guide 3111 is preferentially transferred to the second liquid guide 3112, and when the ability of the second liquid guide 3112 to absorb liquid substances decreases as the aerosol generating substrate increases, the first liquid guide 3111 increases the amount of aerosol generating substrate transmitted in the remaining directions.

[0118] Here, it should be noted that the ability to absorb liquid substances is a property of the material, and it can be understood that when liquid substances are transmitted between two materials with different abilities to absorb liquid substances, the liquid substances move from the material with lower ability to absorb liquid substances to the material with higher ability to absorb liquid substances. For different materials or different structures, the second liquid guide 3112 has a greater ability to absorb liquid substances than the first liquid guide 3111, which is not limited here.

[0119] Through the first liquid guide 3111 and the second liquid guide 3112 arranged in layers, the density of the second liquid guide 3112 is greater than that of the first liquid guide 3111, so that the aerosol generating substrate can be preferentially transmitted from the first liquid guide 3111 to the second liquid guide 3112, and then transmitted from the second liquid guide 3112 to the atomization structure of the heating element 3, so as to preferentially transmit the aerosol generating substrate in the storage space to the heating element 32, guarantee the amount of aerosol generating substrate required for atomization, and improve the liquid supply efficiency.

[0120] In some embodiments, referring to Figures 2 to 3 , the first liquid guide 311 is in interference fit with the inner wall of the first air tube 21.

[0121] The size of the interference fit between the first liquid guide 311 and the inner wall of the first air tube 21 is greater than 0 mm and less than or equal to 0.5 mm, for example, it can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm and 0.5 mm, etc.

[0122] Here, the interference fit means that before assembly, the outer wall size of the first liquid guide 311 is greater than the size of the inner wall of the first air tube 21, and the absolute value of the size difference between the two is greater than 0 mm and less than or equal to 0.5 mm.

[0123] It can be understood that here, the first liquid guide 311 is in interference fit with the inner wall of the first air tube 21, that is, the first liquid guide 3111 is in interference fit with the inner wall of the first air tube 21.

[0124] The first liquid guide 311 is clamped by the first ventilation pipe 21 through interference fit with the inner wall of the first ventilation pipe 21, so that the first ventilation pipe 21 can clamp the first liquid guide 311, reducing the possibility of the first liquid guide 311 deviating from its correct installation position in the first ventilation pipe 21 due to external vibration.

[0125] In some embodiments, referring to Figures 2 to 3 , the first liquid guide 311 is interference fit with the second liquid guide 312.

[0126] The interference fit size of the first liquid guide 311 and the second liquid guide 312 is greater than 0mm and less than or equal to 1mm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1mm, etc.

[0127] Here, the interference fit refers to that before assembly, the outer wall size of the second liquid guide 312 is greater than the inner wall size of the first liquid guide 311, and the absolute value of the size difference between the two is greater than 0mm and less than or equal to 1mm.

[0128] It can be understood that here, the interference fit of the first liquid guide 311 and the second liquid guide 312 refers to the interference fit of the second liquid guide 3112 and the second liquid guide 312.

[0129] Exemplarily, the second liquid guide 312 is entirely arranged in the installation section 221, and the installation section 221 is provided with an opening 2211, and the first liquid guide 311 covers the opening 2211, that is, the second liquid guide 312 is interference fit with the first liquid guide 311 at the opening 2211.

[0130] The form of interference fit of the first liquid guide 311 and the second liquid guide 312 is not limited here, for example, the first liquid guide 311 and the outer wall of the installation section 221 can be interference fit, and the corresponding part of the first liquid guide 311 at the opening 2211 extends into the installation section 221 through the opening 2211 and is interference fit with the second liquid guide 312.

[0131] It can be that the second liquid guide 312 is interference fit with the inner wall of the installation section 221, and the corresponding part of the second liquid guide 312 at the opening 2211 extends out of the installation section 221 and is interference fit with the first liquid guide.

[0132] Of course, the liquid guide 31 can also be in interference fit with the outer wall of the mounting section 221, while the second liquid guide 312 is in interference fit with the inner wall of the mounting section 221. At the opening 2211, the corresponding part of the first liquid guide 311 extends into the mounting section 221 through the opening 2211, while the corresponding part of the second liquid guide 312 extends out of the mounting section 221 through the opening 2211, so as to realize the interference fit between the first liquid guide 311 and the second liquid guide 312.

[0133] The interference fit between the first liquid guide 311 and the second liquid guide 312 can, on the one hand, clamp the second liquid guide 312 by the first liquid guide 311, reducing the possibility of the second liquid guide 312 deviating from the correct installation position on the first liquid guide 311 due to external vibration. On the other hand, the first liquid guide 311 and the second liquid guide 312 are in close contact, realizing the liquid communication between the first liquid guide 311 and the second liquid guide 312, and facilitating the transmission of aerosol generating substrate between the first liquid guide 311 and the second liquid guide 312.

[0134] In some embodiments, referring to Figures 2 to 3 , the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112 are in interference fit.

[0135] The interference fit distance between the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112 is greater than 0 mm and less than or equal to 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 and 1 mm, etc.

[0136] Here, the interference fit means that before assembly, the outer wall size of the second liquid guide sub-element 3112 is greater than the inner wall size of the first liquid guide sub-element 3111, and the absolute value of the size difference between the two is greater than 0 mm and less than or equal to 1 mm.

[0137] The interference fit between the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112 can, on the one hand, clamp the second liquid guide sub-element 3112 by the first liquid guide sub-element 3111, reducing the possibility of the second liquid guide sub-element 3112 deviating from the correct installation position on the first liquid guide sub-element 3111 due to external vibration. On the other hand, the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112 are in close contact, realizing the liquid communication between the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112, and facilitating the transmission of aerosol generating substrate between the first liquid guide sub-element 3111 and the second liquid guide sub-element 3112.

[0138] Here, it should be noted that the size of the interference fit between the first liquid guide 311 and the inner wall of the first air passage 21 is smaller than the size of the interference fit of the liquid guide 31. In this way, the interference fit surface between the first liquid guide 311 and the inner wall of the first air passage 21, i.e., the interference fit surface between the first liquid guide sub-piece 3111 and the inner wall of the first air passage 21, has a smaller gas passage resistance than other interference fit surfaces. Therefore, the gas preferentially passes through the interference fit surface between the first liquid guide sub-piece 3111 and the inner wall of the first air passage 21, which is conducive to controlling the gas flow path.

[0139] In some embodiments, referring to Figures 2 to 3 , the density of the first liquid guide sub-piece 3111 is greater than or equal to 0.06 g / cm 3 and less than or equal to 0.1 g / cm 3 .

[0140] Here, the density of the first liquid guide sub-piece 3111 refers to the density when the first liquid guide sub-piece 3111 is liquid guide cotton. For example, the density can be 0.06 g / cm 3 , 0.07 g / cm 3 , 0.08 g / cm 3 , 0.09 g / cm 3 , 0.1 g / cm 3 , and the like.

[0141] In some embodiments, referring to Figures 2 to 3 , the density of the second liquid guide sub-piece 3112 is greater than or equal to 0.1 g / cm 3 and less than or equal to 0.15 g / cm 3 .

[0142] Here, the density of the second liquid guide sub-piece 3112 refers to the density when the second liquid guide sub-piece 3112 is liquid guide cotton. For example, the density can be 0.1 g / cm 3 , 0.11 g / cm 3 , 0.12 g / cm 3 , 0.13 g / cm 3 , 0.14 g / cm 3 , 0.15 g / cm 3 , and the like.

[0143] By setting the first liquid guide sub-piece 3111 and the second liquid guide sub-piece 3112 within the above range, on the one hand, the first liquid guide sub-piece 3111 and the second liquid guide sub-piece have appropriate aerosol generating substrate suction speed and appropriate aerosol generating substrate storage capacity. On the other hand, the first liquid guide sub-piece 3111 and the second liquid guide sub-piece 3112 have a density difference, and the density of the second liquid guide sub-piece 3112 is greater than the density of the first liquid guide sub-piece 3111. In this way, the transfer of the aerosol generating substrate from the first liquid guide sub-piece 3111 to the second liquid guide sub-piece 3112 is controlled.

[0144] In some embodiments, referring to Figures 1 to 3 The liquid storage member 4 is disposed between the first air passage 21 and the air outlet section 222, and is spaced apart from the outer wall of the air outlet section 222 to form a first gap 41, and the air outlet section 222 forms part of the air exchange passage 5.

[0145] Here, the liquid storage member 4 is disposed between the first air passage 21 and the air outlet section 222, and is spaced apart from the outer wall of the air outlet section 222 to form a first gap 41, and the air outlet section 222 forms part of the air exchange passage 5, so that the length of the liquid storage member 4 and the air outlet section 222, the volume of the liquid storage member 4, and the length of the first gap 41 can be used to control the liquid storage capacity of the liquid storage member 4 and the air exchange threshold of the air exchange passage 5, and the structure is simple, and the structure of the air outlet section 222 can reduce the overall volume of the atomizer 100.

[0146] It should be noted that the liquid storage member 4 here also extends to the mounting section 221 and is in contact with the liquid guide member 31 to achieve liquid communication between the liquid storage member 4 and the liquid guide member 31.

[0147] In some embodiments, referring to Figures 1 to 3 The size of the overlapping area of the liquid storage member 4 and the first air passage 21 in the first direction is greater than or equal to 5 mm and less than or equal to 50 mm.

[0148] The size of the overlapping area of the liquid storage member 4 and the first air passage 21 in the first direction is greater than or equal to 5 mm and less than or equal to 50 mm, that is, the length of the first gap 41 in the first direction is greater than or equal to 5 mm and less than or equal to 50 mm. The specific size is not limited here, for example, it can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, and 50 mm, etc.

[0149] In some embodiments, referring to Figures 1 to 3 The distance between the liquid storage member 4 and the outer wall of the air outlet section 222 is greater than 0 mm and less than or equal to 1 mm.

[0150] The distance between the liquid storage member 4 and the outer wall of the air outlet section 222 is greater than 0 mm and less than or equal to 1 mm, that is, the width of the first gap 41 is greater than 0 mm and less than or equal to 1 mm. The specific size is not limited here, 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, and 1 mm, etc.

[0151] By setting the size of the first gap 41 and the distance between the liquid storage member 4 and the outer wall of the gas outlet section 222 within the above range, the size of the first gap 41 can be set to be inversely proportional to the amount of the aerosol generating substrate stored in the liquid storage member 4, so that the amount of the aerosol generating substrate on the liquid guide member 31 can be controlled to be the required amount for atomization.

[0152] In some embodiments, referring to Figures 1 to 3 , the liquid storage member 4 is interference-fitted with the inner wall of the first air passage 21.

[0153] The size of the interference fit between the liquid storage member 4 and the inner wall of the first air passage 21 is greater than 0 mm and less than or equal to 1 mm, for example, 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, and 1 mm, etc.

[0154] Here, the interference fit means that the size of the outer wall of the liquid storage member 4 is greater than the size of the inner wall of the first air passage 21 before assembly, and the absolute value of the difference between the two sizes is greater than 0 mm and less than or equal to 1 mm.

[0155] The liquid storage member 4 is interference-fitted with the inner wall of the first air passage 21, so that the first air passage 21 can hold the liquid storage member 4, reducing the possibility of the liquid storage member 4 deviating from its correct installation position in the first air passage 21 due to external vibration.

[0156] In some embodiments, referring to Figures 1 to 3 , the partial air exchange passage 5 is formed between the liquid storage member 4 and the liquid guide member 31.

[0157] Here, the partial air exchange passage 5 formed between the liquid storage member 4 and the liquid guide member 31 refers to the contact surface between the liquid storage member 4 and the liquid guide member 31 between the first air passage 21 and the second air passage 22. The liquid storage member 4 and the liquid guide member 31 are interference-fitted, and the size of the interference fit is greater than 0 mm and less than or equal to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm, etc.

[0158] Here, the interference fit means that after the assembly, the size of the liquid storage member 4 and the liquid guide member 31 after being pressed and deformed in the first direction is subtracted from the sum of the original sizes of the two, and the absolute value of the difference is greater than 0 mm and less than or equal to 0.5 mm.

[0159] It should be noted that the size of the interference fit between the liquid storage member 4 and the liquid guide member 31 is substantially the same as the size of the interference fit between the first liquid guide member 311 and the inner wall of the first air passage 21, and is smaller than the size of the interference fit between the liquid guide member 31 and other surfaces. The gas passage resistance of the interference fit between the liquid storage member 4 and the liquid guide member 31 is smaller than that of the other interference fits, so that the gas preferentially passes through the contact surface between the liquid storage member 4 and the liquid guide member 31, which is advantageous for controlling the gas passage path.

[0160] In some embodiments, referring to Figures 1 to 3 , the atomizer 100 comprises a fixing seat 6 arranged in the air passage 2 and located at the end of the heating body 3 away from the liquid storage member 4.

[0161] The fixing seat 6 is arranged in the air passage 2 to fix the structure inside the air passage 2, for example, to fix the heating body 3. The air passage 2 extends from one end of the air passage 2 to abut against the air passage 2, thereby preventing the movement of the heating body 3 in the first direction relative to the air passage 2. Since the liquid storage member 4 is in contact with the heating body 3, the fixing seat 6 also prevents the movement of the liquid storage member 4 in the first direction relative to the air passage 2. The structure of the fixing seat 6 is not limited here.

[0162] Exemplarily, the fixing seat 6 comprises a first fixing member 61 and a second fixing member 62. The first fixing member 61 is an annular structure and is press-fitted into the gap between the first air passage 21 and the second air passage 22. The second fixing member 62 is a cylindrical structure and is press-fitted into the second air passage 22.

[0163] By arranging the fixing seat 6 on the air passage 2 at the end of the heating body 3 away from the liquid storage member 4, the heating body 3 and the liquid storage member 4 are further fixed in the first direction, thereby improving the stability of the installation of the heating body 3 and the liquid storage member 4.

[0164] In some embodiments, referring to Figure 3 , the gas exchange channel 5 comprises a first gas exchange section 52, a second gas exchange section 53, and a third gas exchange section 54. The first gap 41 constitutes the first gas exchange section 52. The second gas exchange section 53 is formed between the liquid storage member 4 and the liquid guide member 31. The third gas exchange section 54 is formed between the liquid guide member 31 and the first air passage 21 and is communicated to the lower liquid outlet 211.

[0165] It should be noted that ​ the arrow in the figure indicates the path with the smallest resistance for the inflow of external air into the liquid storage space 1 during the backflow process of the liquid storage space 1, i.e., the setting path of the gas exchange channel 5.

[0166] Here, the air exchange passage 5 refers to a path with the least resistance for air to flow from the outside of the cartridge into the liquid storage space 1 formed in the atomizer 100. The first air exchange section 52 is a first gap 41 formed between the liquid storage member 4 and the air passage member 2. Here, due to the gap, the resistance of air flow here is the least in the air exchange passage 5.

[0167] The first air exchange section 52 is formed by the liquid storage member 4 which can change the volume to change the size of the first gap 41, so the first gap 41 is also a structure that can adjust the cross-sectional area of the flow in the air exchange passage 5. The first air exchange section 52 can achieve self-adaptive control of the air exchange threshold, so as to control the amount of aerosol generating substrate on the liquid guide member 31 to meet the required amount for atomization during atomization.

[0168] The second air exchange section 53 is formed between the contact surface of the liquid storage member 4 and the liquid guide member 31, and the third air exchange section 54 is formed between the contact surface of the liquid guide member 31 and the first air passage 21. It should be noted that the second air exchange section 53 and the third air exchange section 54 are not a passage specially provided for gas flow, but after the gas flows from the first air exchange section 52, it continues to flow into the liquid storage space 1. Due to the smaller interference fit size, compared with directly passing through the liquid storage member 4, the gas flowing into the liquid storage space 1 from the contact surface with smaller interference fit size has the least resistance, so the air spontaneously passes through the second air exchange section 53 and the third air exchange section 54, and then passes through the liquid inlet 211 to enter the liquid storage space 1.

[0169] By setting the first air exchange section 52 with adjustable cross-sectional area of flow, and by reducing the interference fit size and guiding the gas to flow spontaneously into the second air exchange section 53 and the third air exchange section 54, the threshold of the gas flowing into the liquid storage space 1 through the air exchange passage 5 is controllable, so as to control the amount of aerosol generating substrate on the liquid guide member 31 to meet the required amount for atomization. This can be achieved by structural design, without the need for additional control devices, and the structure is simple and the cost is low.

[0170] In the description of the present application, the description of the terms "in an embodiment", "in an embodiment", "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 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. Furthermore, the person 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.

[0171] 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 application relates to an aerosol generating device, comprising: a liquid storage space for storing an aerosol generating substrate; an air passage member formed with an air outlet and a lower liquid outlet penetrating through a side wall of the air passage member; a heating body arranged in the air passage member, the heating body comprising a liquid guide member in liquid communication with the liquid storage space through the lower liquid outlet; a liquid storage member arranged at one end of the liquid guide member, the liquid storage member and the air passage member defining an at least partially air exchange passage therebetween, an air exchange outlet of the air exchange passage being in communication with the lower liquid outlet.

2. The atomizer of claim 1, wherein, The liquid storage member and the air passage member have a first gap in a radial direction of the air passage member, the first gap constituting the at least partially air exchange passage, and the size of the first gap being inversely proportional to the storage amount of the aerosol generating substrate by the liquid storage member.

3. The atomizer of claim 2, wherein, The air passage member comprises a first air passage tube and a second air passage tube extending along a first direction, the first air passage tube being sleeved on a peripheral side of the second air passage tube, the first air passage tube and the second air passage tube being arranged in a radial direction of the air passage member, the liquid storage member being arranged between the first air passage tube and the second air passage tube and forming the first gap with the first air passage tube and / or the second air passage tube.

4. The atomizer of claim 3, wherein, The second air passage tube comprises a mounting section and an air outlet section arranged along the first direction, the air outlet section having the air outlet in an inner portion thereof, the lower liquid outlet penetrating through a side wall of the first air passage tube, at least a portion of the liquid guide member being clamped between the first air passage tube and the mounting section and covering the lower liquid outlet.

5. The atomizer of any of claims 1-4, wherein, The liquid guide member comprises a first liquid guide member and a second liquid guide member arranged in a radial direction of the air passage member in a stacked manner.

6. The atomizer of claim 5, wherein, The air passage member comprises a first air passage tube and a second air passage tube extending along a first direction, the second air passage tube comprising a mounting section, the first liquid guide member being arranged between the first air passage tube and the second air passage tube, and the second liquid guide member being arranged in the mounting section; the second air passage tube being formed with an opening penetrating through a side wall of the mounting section, the first liquid guide member covering the lower liquid outlet and the opening and being in liquid communication with the second liquid guide member through the opening.

7. The atomizer of claim 5, wherein, The first liquid guide member comprises a first liquid guide sub-member and a second liquid guide sub-member arranged in a radial direction of the air passage member in a stacked manner, the second liquid guide sub-member having a density greater than that of the first liquid guide sub-member.

8. The atomizer of claim 7, wherein, The air passage member comprises a first air passage tube, the first liquid guide member being in interference fit with an inner wall of the first air passage tube; and / or, the first liquid guide member being in interference fit with the second liquid guide member; and / or, the first liquid guide sub-member being in interference fit with the second liquid guide sub-member.

9. The atomizer of claim 7, wherein, The density of the first liquid guide sub-member is greater than or equal to 0.06 g / cm 3 and less than or equal to 0.1 g / cm 3 ; and / or, The density of the second liquid guide sub-member is greater than or equal to 0.1 g / cm 3 and less than or equal to 0.15 g / cm 3 .

10. The atomizer of claim 4, wherein, The liquid storage member is arranged between the first air passage tube and the air outlet section, the liquid storage member being arranged in a spaced manner with an outer wall of the air outlet section to form the first gap.

11. The atomizer of claim 10, wherein, The overlapping area of the liquid storage member and the first air passage tube in the first direction has a size greater than or equal to 5 mm and less than or equal to 50 mm; and / or, the liquid storage member is arranged in a spaced manner with the outer wall of the air outlet section by a distance greater than 0 mm and less than or equal to 1 mm.

12. The atomizer of claim 10, wherein, The liquid storage member is in interference fit with the inner wall of the first air passage tube; and / or, The liquid storage member and the liquid guide member form part of the air exchange channel.

13. The atomizer of claim 4, wherein, The atomizer comprises a fixing seat arranged in the air passage member and located at an end of the heating element away from the liquid storage member.

14. The atomizer of claim 1, wherein, The liquid storage member and the air passage member have a first gap in a radial direction of the air passage member, the air passage member comprises a first air passage tube extending in a first direction, the air exchange channel comprises a first air exchange section, a second air exchange section and a third air exchange section, the first gap constitutes the first air exchange section, the liquid storage member and the liquid guide member form the second air exchange section, the liquid guide member and the first air passage tube form the third air exchange section, and the third air exchange section is communicated to the lower liquid outlet.

15. An aerosol-generating device comprising: The aerosol generating device comprises an atomizer and a power supply assembly electrically connected to the atomizer, wherein the atomizer comprises: a liquid storage space for storing an aerosol generating substrate; an air passage member formed with an air outlet channel and a lower liquid outlet penetrating a side wall of the air passage member; a heating element arranged in the air passage member, the heating element comprising a liquid guide member in liquid communication with the liquid storage space through the lower liquid outlet; a liquid storage member arranged at one end of the liquid guide member, the liquid storage member and the air passage member defining at least part of an air exchange channel, an air exchange outlet of the air exchange channel being communicated to the lower liquid outlet.

16. The aerosol-generating device of claim 15, wherein, The aerosol generating device comprises a housing, at least part of the power supply assembly is arranged in the housing, and at least part of the atomizer is arranged in the housing; or The power supply assembly and the atomizer are detachably connected.

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