Electronic atomization device and atomizer

Abstract

The present application relates to an electronic atomization device and an atomizer, the atomizer comprising an atomization shell, an atomization core and a breather pipe. A buffer cavity and a liquid supply channel for supplying liquid to the buffer cavity are formed in the atomization shell. The atomization core is arranged in the atomization shell and communicates with the buffer cavity. The breather pipe is arranged in the atomization shell, and a pressure relief hole is formed in the wall of the breather pipe to communicate the buffer cavity with the outside, for relieving pressure when liquid is supplied to the buffer cavity, so as to make the liquid supply smooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of atomization, and more particularly, to an electronic atomization device and an atomizer. BACKGROUND

[0002] The electronic atomization device comprises a liquid storage cavity and an atomization assembly. In operation, the atomization assembly is driven by a battery device to heat the atomization liquid supplied by the liquid storage cavity to form an aerosol for a user to inhale. When the atomization liquid is injected into the liquid storage cavity, pressure is easily generated in the liquid storage cavity, and the atomization liquid in the liquid storage cavity may leak under the pressure. SUMMARY

[0003] The present application aims to solve the above-mentioned defects in the prior art and provides an improved atomizer and an electronic atomization device comprising the atomizer.

[0004] The present application adopts the technical solution that an atomizer is constructed, which comprises:

[0005] an atomization shell, wherein a buffer cavity and a liquid supply channel for supplying liquid to the buffer cavity are formed in the atomization shell;

[0006] an atomization core, which is arranged in the atomization shell and is in communication with the buffer cavity; and

[0007] a vent pipe, which is arranged in the atomization shell, and a pressure relief hole is formed in the wall surface of the vent pipe to connect the buffer cavity with the outside world, so as to relieve pressure when liquid is supplied to the buffer cavity.

[0008] In some embodiments, the cross-sectional size of the pressure relief hole is within a set range, so that the inner surface of the pressure relief hole can form a surface tension film.

[0009] In some embodiments, the hole diameter of the pressure relief hole is 0.4-1.0 mm.

[0010] In some embodiments, the hole diameter of the pressure relief hole is 0.6-0.8 mm.

[0011] In some embodiments, the position of the pressure relief hole is flush with or higher than the upper end surface of the atomization core.

[0012] In some embodiments, the position of the pressure relief hole is flush with or higher than the upper end surface of the buffer cavity.

[0013] In some embodiments, the atomizer further comprises a base assembly arranged at the lower end of the atomization shell, and the liquid supply channel is formed in the base assembly.

[0014] In some embodiments, the base assembly comprises a soft sealing seat, and the liquid supply channel is formed on the sealing seat.

[0015] In some embodiments, a barrier wall is formed in the liquid supply channel, and a cut groove is formed on the barrier wall to allow the liquid supply tube to pass through, and the cut groove is closed and sealed when the liquid supply tube is separated from the liquid supply channel.

[0016] In some embodiments, the atomizing core is arranged in the ventilation tube, and the atomizing core comprises a heating element and a liquid absorbing element wrapped outside the atomizing core and connected to the buffer cavity.

[0017] In some embodiments, the atomizer further comprises a liquid storage element arranged outside the ventilation tube and connected to the buffer cavity.

[0018] In some embodiments, the buffer cavity comprises a first buffer cavity located at a lower portion and connected to the liquid supply channel, and a second buffer cavity located at an upper portion and connected to the first buffer cavity; the atomizing shell further comprises a first liquid outlet connecting the first buffer cavity to a lower end of the liquid storage element, and a second liquid outlet connecting the second buffer cavity to an upper end of the liquid storage element.

[0019] In some embodiments, the cross-sectional area of the first buffer cavity is smaller than that of the second buffer cavity.

[0020] In some embodiments, the ventilation tube is coaxially arranged with the atomizing shell.

[0021] In some embodiments, the atomizing shell comprises two buffer cavities arranged on two sides of the atomizing shell, respectively.

[0022] The present application further provides an electronic atomizing device comprising a main machine and an atomizer according to any one of the above embodiments; the main machine comprises a liquid supply tube arranged in the liquid supply channel and a liquid transmission assembly connected to the liquid supply tube for driving the atomizing liquid.

[0023] In some embodiments, the electronic atomizing device further comprises a liquid storage unit connected to the liquid transmission assembly; the liquid storage unit is arranged separately from the atomizer.

[0024] In some embodiments, the electronic atomizing device further comprises a controller electrically connected to the liquid transmission assembly to control the start and stop of the liquid transmission assembly.

[0025] In some embodiments, the atomizing core comprises a heating element; the liquid supply pipe is conductive, the liquid supply pipe and the heating element are electrically connected to two poles of the controller respectively, and the liquid supply pipe and the heating element can form a path or a break under the action of the atomizing liquid, and the controller can control the liquid supply to be opened based on the break state between the liquid supply pipe and the heating element.

[0026] In some embodiments, the two end faces of the liquid supply pipe are conductive, and the outer periphery of the liquid supply pipe is insulated.

[0027] The present application has at least the following beneficial effects: the present application provides a pressure relief hole on the ventilation pipe for pressure relief when supplying liquid to the buffer cavity, thereby ensuring smooth liquid supply. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0029] Figure 1 is a schematic diagram of the electronic atomizing device in the first embodiment of the present application;

[0030] Figure 2 is Figure 1 a schematic diagram of the electronic atomizing device shown in FIG. 1;

[0031] Figure 3 is Figure 1 a schematic diagram of the A-A cross-sectional structure of the electronic atomizing device shown in FIG. 1;

[0032] Figure 4 is Figure 1 a schematic diagram of the B-B cross-sectional structure of the electronic atomizing device shown in FIG. 1;

[0033] Figure 5 is Figure 2 a schematic diagram of the main machine in FIG. 1;

[0034] Figure 6 is Figure 5 a schematic diagram of the liquid transfer assembly in FIG. 1;

[0035] Figure 7 is Figure 6 a schematic diagram of the liquid transfer assembly shown in FIG. 1;

[0036] Figure 8 is Figure 6 a schematic diagram of the pump body in FIG. 1;

[0037] Figure 9 is Figure 2 a schematic diagram of the atomizer in FIG. 1;

[0038] Figure 10 isFigure 1 The circuit schematic of the liquid level detection circuit of the electronic atomization device shown in FIG. 1;

[0039] Figure 11 The structure schematic of the electronic atomization device in the second embodiment of the present application;

[0040] Figure 12 The structure schematic of the atomizer of the electronic atomization device in the third embodiment of the present application;

[0041] Figure 13 The structure schematic of the electronic atomization device shown in FIG. 4; Figure 12 The circuit schematic of the liquid level detection circuit of the electronic atomization device shown in FIG. 4;

[0042] Figure 14 The structure schematic of the electronic atomization device in the fourth embodiment of the present application;

[0043] Figure 15 The structure schematic of the electronic atomization device in the fifth embodiment of the present application when the atomizer is separated from the main machine;

[0044] Figure 16 The structure schematic of the electronic atomization device shown in FIG. 7; Figure 15 The structure schematic of the electronic atomization device shown in FIG. 7 when the atomizer is assembled with the main machine;

[0045] Figure 17 The structure schematic of the electronic atomization device in the sixth embodiment of the present application when the piston is in the first position;

[0046] Figure 18 The structure schematic of the electronic atomization device shown in FIG. 9; Figure 17 The structure schematic of the electronic atomization device shown in FIG. 9 when the piston is in the second position;

[0047] Figure 19 The exploded structure schematic of the air leakage module shown in FIG. 11; Figure 17 The exploded structure schematic of the air leakage module shown in FIG. 11; DETAILED DESCRIPTION

[0048] In order to have a more clear understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0049] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0050] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0053] As Figure 1As shown, the electronic atomizing device in the first embodiment of the present invention may include an atomizer 1, a main unit 2, and a liquid storage unit 3. The liquid storage unit 3 stores the atomizing liquid and supplies it to the atomizer 1. The main unit 2 supplies power to the atomizer 1 and controls the operation of the entire electronic atomizing device. The atomizer 1 atomizes the liquid into an aerosol after being powered on and outputs the aerosol for the user to inhale. In this embodiment, the electronic atomizing device is generally rectangular in shape. It is understood that in other embodiments, the electronic atomizing device is not limited to a rectangular shape; it may also be cylindrical, elliptical, flat, or other shapes.

[0054] like Figures 2-3 As shown, the liquid storage unit 3 can be detachably disposed within the housing 21 of the main unit 2, facilitating replacement after the atomizing liquid is used up. In this embodiment, the liquid storage unit 3 is pluggably disposed at the bottom of the housing 21, and can be plugged in and removed through the opening at the bottom of the housing 21, making it convenient for the user to remove and replace. In other embodiments, the liquid storage unit 3 can also be disposed in other locations on the main unit 2, for example, it can also be disposed on the side or top of the main unit 2.

[0055] In some embodiments, the liquid storage unit 3 may include a liquid storage inner shell 31, a liquid storage outer shell 32, and a sealing plug 33. The liquid storage inner shell 31 is cylindrical, and its inner wall defines a liquid storage chamber 310 for storing the atomizing liquid. The wall thickness of the liquid storage inner shell 31 is relatively thin to give the liquid storage chamber 310 a large liquid storage space. The liquid storage inner shell 31 may be made of a soft material such as silicone; in other embodiments, it may also be made of a rigid material.

[0056] The liquid storage outer shell 32 is fitted over the liquid storage inner shell 31, serving to support and protect the liquid storage inner shell 31. The liquid storage outer shell 32 can be made of rigid materials such as plastic or metal, and its external cross-sectional shape matches the internal cross-sectional shape of the outer shell 21. The outer surface of the liquid storage outer shell 32 may also be provided with anti-slip parts 321 to increase the friction between the liquid storage outer shell 32 and the user's hand, facilitating insertion and removal. Specifically, in this embodiment, uneven anti-slip textures are formed on both sides of the bottom of the liquid storage outer shell 32, forming anti-slip parts 321. Grooves 211 are formed on both sides of the bottom of the outer shell 21 corresponding to the anti-slip parts 321, extending upwards from the bottom sidewall of the outer shell 21 to expose the anti-slip parts 321, thus facilitating the user to grip the anti-slip parts 321 and pull out the liquid storage unit 3. In other embodiments, the anti-slip parts 321 can also be formed by attaching a soft material such as silicone to the outer surface of the liquid storage outer shell 32.

[0057] The sealing plug 33 is sealingly inserted into the upper end (i.e. the end close to the atomizer 1) opening of the liquid storage inner shell 31 to seal the liquid storage compartment 310. The sealing plug 33 can have at least one liquid outlet channel 3320 formed longitudinally thereon to communicate with the liquid storage compartment 310, which can be used to insert a liquid outlet tube to output the atomized liquid in the liquid storage compartment 310 to the atomizer 1. In the present embodiment, the liquid outlet channel 3320 has two, which can have different apertures to have different liquid outlet rates. In other embodiments, the two liquid outlet channels 3320 can also have the same aperture. In yet other embodiments, the number of liquid outlet channels 3320 is not limited to two, for example, it can also be one or more than two.

[0058] The sealing plug 33 in some embodiments can include a body portion 331 and a liquid outlet portion 332 arranged in cooperation with the body portion 331. The body portion 331 is sealingly inserted into the upper end opening of the liquid storage inner shell 31, which can be made of hard material such as plastic. The liquid outlet portion 332 is arranged on the top of the body portion 331, which can be made of soft material such as silicone. The liquid outlet channel 3320 can be formed on the liquid outlet portion 332, after the liquid outlet tube is inserted, the liquid outlet channel 3320 made of soft material wraps around the outer surface of the liquid outlet tube and sealingly cooperates with the outer surface of the liquid outlet tube to prevent liquid leakage. The liquid outlet port of the liquid outlet channel 3320 can be designed as a cross slot or a slot, when the liquid outlet channel 3320 is not inserted into the liquid outlet tube, the cross slot or slot liquid outlet port of the liquid outlet channel 3320 is closed and sealed to prevent the atomized liquid in the liquid storage compartment 310 from flowing out.

[0059] The liquid storage unit 3 can be replaced as a whole after the atomized liquid is used up, or the atomized liquid can also be injected into the liquid storage compartment 310 through the liquid outlet channel 3320 for continued use.

[0060] The liquid storage unit 3 in some embodiments can also include at least one magnetic member 34 embedded on the sealing plug 33 for magnetic connection with the host 2. Specifically, in the present embodiment, the magnetic member 34 has two, which can be respectively embedded on the top of the body portion 331 diagonally on both sides.

[0061] As Figures 3-5As shown, the host 2 can include a housing 21, a battery 22, a liquid delivery assembly 23, a controller 24, a support assembly 28, an air flow sensor 29, at least one liquid supply tube 25, and at least one first electrode column 26 in some embodiments. The battery 22, the liquid delivery assembly 23, the controller 24, the support assembly 28, the air flow sensor 29, the at least one liquid supply tube 25, and the first electrode column 26 are all housed in the housing 21, and the battery 22, the liquid delivery assembly 23, the air flow sensor 29, and the at least one first electrode column 26 are all electrically connected to the controller 24. The controller 24 can generally include a circuit board and control circuitry disposed on the circuit board. The battery 22 is located between the liquid storage unit 3 and the atomizer 1, and is disposed close to the liquid storage unit 3 to provide power for the delivery of the atomized liquid.

[0062] In the present embodiment, the housing 21 is a hollow rectangular cylindrical shape with a first end and a second end disposed opposite to each other. The first end is formed with a first receiving space for receiving the atomizer 1, and the second end is formed with a second receiving space for receiving the liquid storage unit 3. At least one air inlet hole 210 can be formed on the housing 21 to allow external air to enter. In the present embodiment, there are two air inlet holes 210 formed on two opposite sides of the housing 21. The support assembly 28 is received in the middle of the housing 21 and can be used to support the atomizer 1 and the liquid storage unit 3, and can also be used to mount the battery 22, the liquid delivery assembly 23, the controller 24, the air flow sensor 29, the liquid supply tube 25, and the first electrode column 26.

[0063] In some embodiments, the bracket assembly 28 can include a bracket body 281, a bracket side cover 282, and a bracket bottom cover 283. The battery 22 can be accommodated in the lower part of the bracket body 281 and arranged close to the second accommodation space, the liquid delivery assembly 23, the controller 24, and the airflow sensor 29 can be accommodated in the upper part of the bracket body 281 and arranged close to the first accommodation space, and the liquid supply pipe 25 and the first electrode column 26 can be inserted into the top wall of the bracket body 281 in the longitudinal direction. The bracket side cover 282 is arranged on one side of the bracket body 281 and can cover the controller 24 and the airflow sensor 29. The bracket side cover 282 can also be provided with a ventilation hole 2820 to connect the airflow sensor 29 and the air inlet hole 210. The outer wall surface of the bracket side cover 282 and the inner wall surface of the shell 21 can also form a sensing channel 212 connecting the air inlet hole 210 and the ventilation hole 2820. The bracket bottom cover 283 is arranged at the bottom of the bracket body 281, and the lower end surface thereof can extend downward to form a liquid outlet pipe 285. When the liquid storage unit 3 is inserted into the shell 21, the liquid outlet pipe 285 can be correspondingly inserted into the liquid outlet channel 3320. The bracket bottom cover 283 can be mounted on the bracket body 281 by at least one fixing member 284, which can be in the form of a column and sequentially pass through the bracket bottom cover 283 and the bracket body 281, thereby fixing the bracket bottom cover 283 and the bracket body 281. In addition, the at least one fixing member 284 can be made of magnetic material and can be arranged one-to-one with at least one magnetic member 34, thereby magnetically fixing the liquid storage unit 3 and the bracket assembly 28.

[0064] The liquid supply pipe 25 and the first electrode column 26 can be inserted into the top wall of the bracket body 281 in the longitudinal direction. In this embodiment, the liquid supply pipe 25 and the first electrode column 26 are two respectively, and the two liquid supply pipes 25 and the two first electrode columns 26 can be arranged side by side in the length direction of the bracket body 281, and the two first electrode columns 26 can be located between the two liquid supply pipes 25. The two liquid supply pipes 25 can be symmetrically arranged, and the two liquid supply pipes 25 can be used to supply liquid to the atomizer 1 at the same time, which is more efficient; or only one liquid supply pipe 25 can be used to supply liquid to the atomizer 1.

[0065] In some embodiments, the host 2 may further include a sealing sleeve 27 fitted onto the liquid supply tube 25, the sealing sleeve 27 being made of a soft material such as silicone. In some embodiments, the sealing sleeve 27 may include a pressing portion 271, a sleeve portion 272 extending downward from the lower end of the pressing portion 271, and an inner flange 273 extending radially inward from the inner wall surface of the lower end of the sleeve portion 272. The outer wall surface of the liquid supply tube 25 may protrude outward to form an annular flange portion 250, which may press against the inner flange 273, thereby pressing and fixing the sealing sleeve 27 onto the support body 281. Furthermore, the sealing sleeve 27 may also be pressed and sealed with the sealing seat 132 at the bottom of the atomizer 1, achieving sealing during liquid supply and insulating the periphery of the liquid supply tube 25 from the periphery of the electrode assembly. The longitudinal section of the pressing portion 271 may be approximately V-shaped, with the V-shaped bottom wall 2712 of the pressing portion 271 contacting the liquid supply tube 25. When the atomizer 1 is inserted into the main unit 2, the sealing seat 132 at the bottom of the atomizer 1 can press down on the V-shaped upper side wall 2711 of the clamping part 271, so that the V-shaped bottom wall 2712 of the clamping part 271 clamps the liquid supply tube 25, and the V-shaped lower side wall 2713 of the clamping part 271 can be supported on the flange part 250 to prevent leakage.

[0066] The liquid transfer component 23 is connected to the liquid storage tank 310 and the liquid supply pipe 25, respectively, and is used to drive the atomized liquid in the liquid storage tank 310 to the atomizer 1 via the liquid supply pipe 25 under the control of the controller 24. The structure of the liquid transfer component 23 is not limited, for example, it can be a peristaltic pump, a piezoelectric ceramic pump, a piston push rod, a screw power, etc. In this embodiment, the liquid transfer component 23 is a peristaltic pump, and the peristaltic pump can be disposed between the atomizer 1 and the battery 22. The peristaltic pump may include a mounting base 231, a drive device 232, a reducer 233, and a pump head 234. The mounting base 231 can be disposed close to the circuit board and parallel to the circuit board, the drive device 232 and the reducer 233 can be disposed side by side on the same side of the mounting base 231, and the pump head 234 is disposed on the side of the reducer 233 away from the mounting base 231. The peristaltic pump adopts a stacked structure in which the drive unit 232 and the reducer 233 are arranged side by side. The peristaltic pump occupies a small volume and has a compact structure, making it more suitable for installation and use in electronic atomization devices with small spaces.

[0067] like Figures 5-8 As shown, the mounting base 231 may include a mounting plate 2311, a plurality of motor mounting posts 2312 protruding from the mounting plate 2311 for supporting the motor 2321, and a plurality of pump head mounting posts 2313 protruding from the mounting plate 2311 for supporting the pump head 234.

[0068] The driving device 232 can include a motor 2321, a motor base 2322, a motor shaft 2323, a motor gear 2324, and an output gear 2325 in some embodiments. The motor base 2322 is supported on the plurality of motor fixing columns 2312, and the motor 2321 is electrically connected with the controller 24 and can be supported and mounted on the motor base 2322. The motor shaft 2323 is connected with the motor 2321 and can synchronously rotate under the driving of the motor 2321, the motor gear 2324 is sleeved on the motor shaft 2323 and can synchronously rotate with the motor shaft 2323, and the output gear 2325 is engaged with the motor gear 2324 and the speed reducer 233 respectively, so that the driving force of the motor 2321 is transmitted to the speed reducer 233.

[0069] Specifically, a gap 230 is formed between the motor base 2322 and the fixing plate 2311, which can provide a mounting space for the motor gear 2324 and the output gear 2325. The fixing plate 2311 is provided with a through hole 2310, and the motor shaft 2323 can be arranged on the side of the motor 2321 facing the fixing plate 2311 and can sequentially penetrate the motor base 2322 and the fixing plate 2311 and extend into the through hole 2310. The motor gear 2324 can be sleeved on the end of the motor shaft 2323 away from the motor 2321, and the motor gear 2324 can be partially accommodated in the through hole 2310 and partially accommodated in the gap 230 and engaged with the output gear 2325, so that the stacking height of the peristaltic pump can be minimized.

[0070] The pump head 234 can include a pump shell 236, a hose 237, and a pump body 238 accommodated in the pump shell 236. The hose 237 is partially accommodated in the pump shell 236 and surrounds the pump body 238, and both ends of the hose 237 are exposed outside the pump shell 236 to connect the pump liquid pipe and communicate the liquid storage bin 310 and the liquid supply pipe 25. The motor 2321 drives the pump body 238 to rotate through the speed reducer 233 to enhance the torque, extrudes the hose 237, and realizes the delivery of the liquid.

[0071] The pump shell 236 can be fixed to the fixing plate 2311 through a plurality of pump head fixing columns 2313 and form a gap with the fixing plate 2311, and the gap forms an accommodation space for accommodating the speed reducer 233. The end face of the pump shell 236 away from the fixing plate 2311 can be flush with the end face of the motor 2321 away from the fixing plate 2311, so as to minimize the stacking height of the peristaltic pump and make the peristaltic pump more beautiful. The pump shell 236 can include a first pump shell 2361 and a second pump shell 2362 which cooperate with each other in some embodiments. The first pump shell 2361 can be cylindrical, and an accommodation space for accommodating the hose 237 and the pump body 238 is formed in the inside thereof. The second pump shell 2362 can be covered on the first pump shell 2361 and can be fixed with the first pump shell 2361 by mutual buckling.

[0072] The pump body 238 may include a camshaft 2381 and a cam 2382 mounted on the camshaft 2381. One end of the camshaft 2381 may be housed in the pump housing 236 and coaxially arranged with the pump housing 236, while the other end may pass through a fixing plate 2311. The cam 2382 may include a cam body 2385, a roller 2383, and a roller shaft 2384. The cam body 2385 is mounted on the camshaft 2381 and coaxially arranged with it. It may include a sleeve 2387 mounted on the camshaft 2381 and cam blocks 2386 respectively disposed at both axial ends of the sleeve 2387. The cam blocks 2386 may be generally elongated and plate-shaped, and may be integrally formed with the sleeve 2387. The roller 2383 may be cylindrical and may be rotatably mounted between the two cam blocks 2386 via the roller shaft 2384. Specifically, the two ends of the roller shaft 2384 can be respectively inserted into two cam blocks 2386, and the rollers 2383 are fitted onto the roller shaft 2384. There can be two rollers 2383, which can be respectively arranged on both sides of the cam block 2386 along the length direction. The two rollers 2383 roll and rub against the hose 237, thereby providing a frictional force to make the hose 237 peristaltic, so as to realize the liquid delivery.

[0073] The reducer 233 may include a plurality of transmission gears 2331 meshing with the output gear 2325, a plurality of gear shafts 2333 for mounting the plurality of transmission gears 2331, and a central gear 2332 meshing with the plurality of transmission gears 2331. The central gear 2332 may be mounted on the camshaft 2381 and may be coaxially arranged with the camshaft 2381. The rotation of the central gear 2332 drives the camshaft 2381 and the cam body 2385 to rotate synchronously. The plurality of transmission gears 2331 may be mounted on the fixed plate 2311 via the plurality of gear shafts 2333. One end of the gear shaft 2333 may pass through the fixed plate 2311, and the other end may support the pump housing 236.

[0074] like Figures 3-4 and Figure 9 As shown, in some embodiments, the atomizer 1 may include an atomizing housing 11, a mouthpiece cap 12 disposed at the upper end of the atomizing housing 11, a base assembly 13 disposed at the lower end of the atomizing housing 11, and an atomizing core 17 and an air duct 177 disposed in the atomizing housing 11.

[0075] In the present embodiment, the atomization shell 11 can be substantially rectangular cylindrical, and at least one buffer cavity 110, an atomization cavity 113 for accommodating the atomization core 17, and at least one first liquid outlet 114 for communicating the at least one buffer cavity 110 with the atomization cavity 113 are formed in the atomization shell 11. The buffer cavity 110 has a small liquid storage capacity and is mainly used for guiding the atomization liquid from the liquid supply pipe 25 to the atomization core 17 for being heated and atomized by the atomization core 17. In the present embodiment, the atomization cavity 113 is cylindrical and formed in the middle of the atomization shell 11, and the two buffer cavities 110 are respectively located on the two opposite sides of the atomization cavity 113, and the two buffer cavities 110 are respectively formed on the two sides of the atomization shell 11 along the length direction, and the two buffer cavities 110 are respectively communicated with the two liquid supply pipes 25 one by one. Each buffer cavity 110 can include a first buffer cavity 111 located at the lower part and communicated with the liquid supply pipe 25, and a second buffer cavity 112 located at the upper part and communicated with the first buffer cavity 111. The cross-sectional area of the second buffer cavity 112 can be larger than that of the first buffer cavity 111. In the present embodiment, the cross-sectional shape of the first buffer cavity 111 is narrow and long, and the cross-sectional area of the first buffer cavity 111 is small, so that the liquid level changes more obviously when the atomization liquid capacity changes, and the liquid level detection is more sensitive. The cross-sectional area of the second buffer cavity 112 is larger to buffer more atomization liquid, so as to avoid excessive supply of atomization liquid from the pressure relief hole 1771 and other parts. The first liquid outlet 114 can be communicated with the bottom of the first buffer cavity 111. In other embodiments, the buffer cavity 110 can also be only one and located on one side of the atomization cavity 113, or the buffer cavity 110 can also be only one and arranged around the atomization cavity 113.

[0076] The mouthpiece cover 12 is arranged on the upper end opening of the atomization shell 11 to seal and cover the buffer cavities 110. An air outlet passage 120 is formed in the mouthpiece cover 12 for outputting the aerosol for the user to smoke. In some embodiments, the mouthpiece cover 12 can include a mouthpiece part 121 and a sealing part 122. The mouthpiece part 121 is arranged on the atomization shell 11 and can be made of hard materials such as plastic. The air outlet passage 120 can be longitudinally through the mouthpiece part 121 and coaxially arranged with the mouthpiece part 121. The sealing part 122 is embedded in the mouthpiece part 121 and can be made of soft materials such as silica gel, which is used to seal and block the upper ends of the two buffer cavities 110.

[0077] The atomization core 17 is arranged in the atomization cavity 113 and in liquid communication with the buffer cavity 110. The atomization core 17 can include a liquid suction member 171 for sucking the atomization liquid from the buffer cavity 110, a heating member 172 arranged on the liquid suction member 171, and two electrode leads 173 electrically connected to the positive and negative poles of the heating member 172, respectively. The liquid suction member 171 is of a porous structure, which can be liquid-absorbing cotton, for storing the atomization liquid and supplying the heating member 172 to heat and atomize the atomization liquid. In other embodiments, the liquid suction member 171 can also be of a sintered porous structure, which can be made of hard capillary structures such as porous ceramic, porous glass ceramic, porous glass, etc.

[0078] The liquid suction member 171 can be cylindrical and coaxially arranged with the atomization cavity 113. The inner wall surface of the liquid suction member 171 defines a heating cavity 1710, which is in communication with the air inlet hole 210, for realizing the mixing of the aerosol and air. The heating member 172 can be a cylindrical metal heating sheet and arranged on the inner wall surface of the liquid suction member 171, which can heat and atomize the atomization liquid absorbed in the liquid suction member 171 to generate the aerosol after being powered on. The liquid suction member 171 wraps the heating member 172, which can make the atomization more uniform. It can be understood that, in other embodiments, the heating member 172 can not be limited to the heating sheet, for example, it can also be a heating wire or a heating film; and the shape of the heating member 172 is not limited to the cylindrical shape, for example, it can also be in a spiral shape or a mesh shape. In some other embodiments, the heating member 172 can also be arranged on the outer surface of the liquid suction member 171.

[0079] In some embodiments, the atomization core 17 can further include a fixing tube 175 sleeved on the liquid suction member 171 and an atomization seat 174 embedded in the lower end opening of the fixing tube 175. The fixing tube 175 can be a circular tube and made of hard materials such as metal or plastic, for supporting and fixing the liquid suction member 171. At least one liquid inlet hole 1750 is formed on the fixing tube 175 to connect the liquid suction member 171 with the buffer cavity 110. In this embodiment, there are three liquid inlet holes 1750, which are uniformly and circumferentially spaced apart along the fixing tube 175. Further, a slot 1751 can be formed on the fixing tube 175, which extends axially downward from the upper end face of the fixing tube 175, so that the upper end opening of the fixing tube 175 has a certain elasticity, which facilitates the insertion of the liquid suction member 171 into the fixing tube 175 from the upper end opening of the fixing tube 175. In addition, the slot 1751 can also be used to connect the liquid suction member 171 with the buffer cavity 110, and the slot 1751 and the three liquid inlet holes 1750 can be uniformly and circumferentially spaced apart along the fixing tube 175.

[0080] The atomizing seat 174 is embedded in the lower end opening of the fixing tube 175, and the outer wall surface of the atomizing seat 174 is in sealing cooperation with the inner wall surface of the fixing tube 175. In some embodiments, the atomizing seat 174 can be made of soft material such as silica gel. The atomizing seat 174 can be longitudinally formed with a gas guiding hole 1740 connecting the heating cavity 1710 and the air inlet hole 210, and two lead through holes 1741 for the two electrode leads 173 to pass through, respectively.

[0081] In some embodiments, the atomizing core 17 can further include a liquid guiding member 176 sleeved outside the fixing tube 175. The liquid guiding member 176 is in a cylindrical shape and is sleeved between the air passage tube 177 and the fixing tube 175, and the outer wall surface and the inner wall surface thereof are in contact with the air passage tube 177 and the fixing tube 175, respectively. The liquid guiding member 176 can rapidly and uniformly conduct the atomizing liquid entering from the air passage tube 177 to the fixing tube 175 through the infiltration of the internal micropores and the capillary effect. The liquid guiding member 176 is a porous structure, which can be liquid guiding cotton, and in other embodiments, it can also be a hard porous structure such as porous ceramic, porous glass ceramic, porous glass, etc.

[0082] The air passage tube 177 can include a first tube segment 1772 located at the lower part and a second tube segment 1773 located at the upper part, and the inner diameter and the outer diameter of the first tube segment 1772 can be greater than the inner diameter and the outer diameter of the second tube segment 1773, respectively. The fixing tube 175, the liquid guiding member 176, and the liquid absorbing member 171 can be accommodated in the first tube segment 1772. The first tube segment 1772 is formed with at least one liquid guiding hole 1770 to enable the atomizing liquid in the buffer cavity 110 to enter the air passage tube 177 to be absorbed by the liquid guiding member 176. In this embodiment, the liquid guiding hole 1770 has four, which are uniformly distributed along the circumference of the first tube segment 1772, and the four liquid guiding holes 1770 can be in one-to-one correspondence with the slot 1751 and the three liquid inlet holes 1750, respectively.

[0083] The upper end of the second pipe section 1773 can be embedded in and communicate with the air outlet passage 120. At least one pressure relief hole 1771 can be formed in the wall of the second pipe section 1773, so that the buffer cavity 110 can communicate with the outside, thereby achieving pressure relief when the liquid supply pipe 25 supplies liquid to the buffer cavity 110, so as to facilitate liquid supply. In the embodiment, the liquid supply pipe 25 has two and is located on both sides of the air pipe 177 in the circumferential direction. The at least one pressure relief hole 1771 can be formed on one side or both sides of the second pipe section 1773, for example, the at least one pressure relief hole 1771 can be formed on the side of the second pipe section 1773 corresponding to one of the liquid supply pipes 25; or at least one pressure relief hole 1771 can be formed on both sides of the second pipe section 1773 corresponding to the two liquid supply pipes 25, respectively. In other embodiments, when the number of liquid supply pipes 25 is one and is arranged on one side of the air pipe 177 in the circumferential direction, the at least one pressure relief hole 1771 can be formed on the side of the second pipe section 1773 corresponding to the one liquid supply pipe 25.

[0084] The cross-sectional size (such as hole diameter, length, width or cross-sectional area, etc.) of the pressure relief hole 1771 is small, so that surface tension can be generated. Due to the existence of the surface tension, the atomized liquid cannot enter the air pipe 177 from the buffer cavity 110. It can be understood that the smaller the cross-sectional size of the pressure relief hole 1771, the higher the hole forming cost. Generally, the cross-sectional size of the pressure relief hole 1771 can be selected according to the material of the air pipe 177, the viscosity of the atomized liquid, the hole forming cost and other factors. For example, when the viscosity of the atomized liquid is large, the cross-sectional size of the pressure relief hole 1771 can be appropriately increased; when the viscosity of the liquid is small, the cross-sectional size of the pressure relief hole 1771 can be appropriately reduced. In the embodiment, the pressure relief hole 1771 is a circular hole, and the hole diameter φ of the pressure relief hole 1771 can be between 0.4-1.0 mm, preferably 0.6-0.8 mm. Within this size range, the pressure relief hole 1771 has good air passage and liquid blocking performance, and the hole forming cost is moderate. In other embodiments, the pressure relief hole 1771 can also be an elliptical hole, a square hole or other shaped hole, and the length or width of the pressure relief hole 1771 can be between 0.4-1.0 mm, preferably 0.6-0.8 mm.

[0085] The position of the pressure relief hole 1771 is higher than the atomization core 17 to reduce liquid leakage. Further, the position of the pressure relief hole 1771 can be higher than the upper end face of the second buffer cavity 112, and the anti-leakage effect is better. In other embodiments, the position of the pressure relief hole 1771 can also be flush with the upper end face of the atomization core 17 or the upper end face of the second buffer cavity 112. A second liquid outlet 115 can be formed in the atomization shell 11 and in communication with the second buffer cavity 112. A pressure relief channel 1774 can be formed between the outer wall surface of the second tube segment 1773 and the inner wall surface of the atomization shell 11 and the inner wall surface of the atomization cover 12, and the second buffer cavity 112 is in communication with the pressure relief hole 1771 via the second liquid outlet 115, the pressure relief channel 1774, the pressure relief hole 1771, and the gas outlet channel 120 in sequence.

[0086] Further, the atomizer 1 can further include a liquid storage member 178 sleeved on the first tube segment 1772. The liquid storage member 178 is a porous structure and can store a certain amount of atomization liquid, which can be a liquid storage cotton in this embodiment. In other embodiments, the liquid storage member 178 can also be a hard porous structure such as porous ceramic, porous glass ceramic, porous glass, etc. The liquid storage member 178 can quickly and uniformly guide the atomization liquid in the buffer cavity 110 into the first tube segment 1772 through the internal micropores of the liquid storage member 178 by imbibition and capillary effect.

[0087] In addition, the lower end of the liquid storage member 178 can be in communication with the first buffer cavity 111 via the first liquid outlet 114, and the upper end of the liquid storage member 178 can be in communication with the second buffer cavity 112 via the second liquid outlet 115, so that the liquid storage member 178 can adsorb the atomization liquid in the second buffer cavity 112, preventing the atomization liquid in the second buffer cavity 112 from being in a free state and causing liquid leakage.

[0088] The base assembly 13 is embedded in the lower end opening of the atomization shell 11, and the atomizer 1 can be mounted on the host 2 via the base assembly 13. After the atomizer 1 and the host 2 are assembled, the bottom surface of the base assembly 13 and the upper end face of the bracket assembly 28 can form an air flow gap 280 in communication with the air inlet hole 210. The base assembly 13 can form at least one liquid supply channel 1320 in communication with at least one liquid supply tube 25 and at least one air hole 1310 in communication with the air flow gap 280 and the heating cavity 1710. In this embodiment, the liquid supply channel 1320 has two and is located on both sides of the base assembly 13 along the length direction, and the upper ends of the two liquid supply tubes 25 are inserted into the two liquid supply channels 1320, respectively.

[0089] In some embodiments, the base assembly 13 can include a base 131 and a sealing seat 132 fitted on the upper end of the base 131. The base 131 can be made of a hard material such as plastic. Vent holes 1310 can be formed on the base 131 in the longitudinal direction. In the present embodiment, there are two vent holes 1310, which can be located on the two sides of the base 131 along the width direction. The upper end surface of the vent hole 1310 can be higher than the surface of the base 131 around the vent hole 1310, so as to reduce liquid leakage through the vent hole 1310.

[0090] The sealing seat 132 can be made of a soft material such as silica gel. The outer surface of the sealing seat 132 is in sealing cooperation with the inner surface of the atomizing shell 11, so as to avoid liquid leakage. A liquid supply channel 1320 can be formed on the sealing seat 132. After the liquid supply pipe 25 is inserted into the liquid supply channel 1320, the soft sealing seat 132 wraps the liquid supply pipe 25, so as to reduce liquid leakage. In addition, a barrier wall 1321 can be formed in the liquid supply channel 1320. The barrier wall 1321 can be located at the bottom of the liquid supply channel 1320 and can be in the shape of a concave circular arc. A slit in the shape of a one-bar slot is formed on the barrier wall 1321. When the atomizer 1 is inserted into the host 2, the liquid supply pipe 25 can pass through the slit on the barrier wall 1321 and be in communication with the first buffer cavity 111. After the atomizer 1 is pulled out of the host 2, the slit on the barrier wall 1321 is closed and sealed, so as to prevent the atomizing liquid in the buffer cavity 110 from flowing out. It can be understood that in other embodiments, the slit formed on the barrier wall 1321 can also be in the shape of a Y-shaped slot, a cross-shaped slot or other shapes.

[0091] In some embodiments, the atomizer 1 can further include at least one support pipe 15 embedded in the at least one liquid supply channel 1320, so as to connect the liquid supply pipe 25 and the first buffer cavity 111. The support pipe 15 is a hard support pipe, which can be made of a hard material such as metal. The support pipe 15 is embedded in the upper part of the liquid supply channel 1320 and has a relatively short axial length, so as to support the soft liquid supply channel 1320. This can avoid the problems of inconvenient assembly, poor appearance and reduced reliability due to the excessively long length of the liquid supply pipe 25, or the problem of insufficient support due to the excessively long length of the soft liquid supply channel 1320. The support pipe 15 can not be in direct contact with the liquid supply pipe 25, so as to avoid damage caused by the collision between the support pipe 15 and the liquid supply pipe 25 when the atomizer 1 is assembled with the host 2. Specifically, in the present embodiment, a certain gap is formed between the lower end surface of the support pipe 15 and the upper end surface of the liquid supply pipe 25, and the inner diameter of the support pipe 15 can be greater than the outer diameter of the liquid supply pipe 25.

[0092] The atomizer 1 can further comprise at least one second electrode post 16 longitudinally embedded on the base assembly 13. The upper end of the second electrode post 16 can be in communication with the heating cavity 1710 and close to the electrode lead 173. Generally, there are two second electrode posts 16, each of which is electrically connected with a electrode lead 173. When the atomizer 1 is inserted into the main machine 2, the lower end (the end towards the battery 22) of the two second electrode posts 16 respectively contacts and conducts with the upper end (the end towards the mouthpiece cover 12) of the two first electrode posts 26. Each second electrode post 16 and the corresponding conducting first electrode post 26 form an electrode assembly 60, which is preferably a flexible electrode assembly.

[0093] Further, the electronic atomization device can further comprise a liquid level detection system to detect whether the atomization liquid in the buffer cavity 110 is sufficient. The liquid supply assembly 23 can start or stop the liquid supply according to the detection result of the liquid level detection system, for example, start the liquid supply when the detection result is lack of liquid, and stop the liquid supply when the detection result is sufficient liquid. The liquid level detection method of the liquid level detection system is not limited, various methods such as capacitance and resistance can be used as long as the atomization liquid in the free state can be detected.

[0094] In the embodiment, the liquid supply pipe 25 is conductive and can be made of conductive material such as metal. The upper end of the liquid supply pipe 25 is in communication with the buffer cavity 110, and the lower end is in communication with the liquid delivery assembly 23. The end of the liquid supply pipe 25 in communication with the liquid delivery assembly 23 can be electrically connected to the controller 24. The upper end of the electrode assembly 60 is electrically connected to the heating element 172, and the lower end is electrically connected to the controller 24. The end of the liquid supply pipe 25 connected to the controller 24 can serve as the positive electrode of the liquid level detection system, and the end of the electrode assembly 60 connected to the controller 24 can serve as the negative electrode of the liquid level detection system. Of course, the end of the liquid supply pipe 25 connected to the controller 24 can also serve as the negative electrode, and the end of the electrode assembly 60 connected to the controller 24 can serve as the positive electrode. If the liquid supply pipe 25 and the heating element 172 are both in contact with the atomized liquid and form a conductive path through the atomized liquid, then the controller 24, the liquid supply pipe 25, the atomized liquid in the buffer cavity 110, the heating element 172, the electrode assembly 60, and the controller 24 are sequentially connected to form a liquid level detection circuit loop, indicating that the atomized liquid in the buffer cavity 110 is sufficient, and the liquid delivery assembly 23 can be stopped from supplying liquid to the buffer cavity 110 to prevent excessive atomized liquid from causing liquid leakage. As the atomized liquid is gradually consumed by suction and heating, the free atomized liquid in the buffer cavity 110 will immediately be replenished to the liquid accumulation member 178, the liquid guide member 176, and the liquid suction member 171, until the circuit is broken. When the liquid supply pipe 25 and the heating element 172 are in an open circuit, it indicates that the atomized liquid in the buffer cavity 110 is insufficient, and the liquid delivery assembly 23 can be started to supply liquid to the buffer cavity 110. The supplied atomized liquid first fills the liquid accumulation member 178, the liquid guide member 176, and the liquid suction member 171. When a certain amount of free atomized liquid appears in the buffer cavity 110, it will form a conductive path between the liquid supply pipe 25 and the heating element 172, and the liquid delivery assembly 23 will stop supplying liquid.

[0095] In the embodiment, the presence or absence of atomized liquid in the buffer cavity 110 is determined by the continuity of the circuit between the liquid supply pipe 25 and the electrode assembly 60, which is simple in structure, reliable in result, fast in automatic liquid injection response, and can avoid dry burning and liquid leakage. Specifically, the controller 24 can be used to determine whether a conductive path is formed between the liquid supply pipe 25 and the electrode assembly 60. If yes, a closing signal is output to the liquid delivery assembly 23 to stop the liquid delivery assembly 23 from supplying liquid. If no, an opening signal is output to the liquid delivery assembly 23 to start the liquid delivery assembly 23 to supply liquid. The closing signal and / or the opening signal can be immediately transmitted to the liquid delivery assembly 23 to immediately stop and / or start the liquid delivery assembly 23 to supply liquid. In other embodiments, the controller 24 can further include a delay module for delaying the start or stop of the liquid delivery assembly 23.

[0096] In another embodiment, the liquid supply component 23 can be controlled to start supplying liquid when the liquid level detecting system detects the disconnection between the liquid supply pipe 25 and the electrode assembly 60, and stop supplying liquid after a certain time of pumping. The atomized liquid pumped by the liquid supply component 23 can be mostly stored in the liquid storage member 178, the liquid guide member 176 and the liquid absorbing member 171, and heated by the heating member 172. When the atomized liquid is consumed, the system will detect the disconnection between the liquid supply pipe 25 and the electrode assembly 60 again, and start the liquid supply component 23 to continue pumping. The time and the amount of pumping can be determined according to the liquid supply speed, the atomization speed, the capacity of the buffer cavity 110, etc. For example, the time of pumping can be 1-5s, and the amount of pumping can be 15-50mg.

[0097] The two end faces of the liquid supply pipe 25 can be conductive, and the liquid supply pipe 25 can be connected to the atomized liquid in the buffer cavity 110 and the controller 24 via the two end faces. The two end faces of the first electrode column 26 and the second electrode column 16 can be conductive, the lower end face of the first electrode column 26 is connected to the controller 24, the upper end face of the first electrode column 26 can be connected to the lower end face of the second electrode column 16, and the upper end face of the second electrode column 16 is connected to the heating member 172. Specifically, the outer periphery of the liquid supply pipe 25, the first electrode column 26 and the second electrode column 16 can be insulated, for example, an insulation layer (such as an insulation sleeve, an insulation coating, a silica gel flange, etc.) can be wrapped on the outer wall surface of the liquid supply pipe 25 and / or the first electrode column 26 and / or the second electrode column 16 to realize the insulation of the outer periphery, which can improve the reliability of the circuit between the liquid supply pipe 25 and the electrode assembly 60, and prevent the liquid supply pipe 25 and the electrode assembly 60 from being misjudged as a path due to liquid leakage, thereby preventing the heating member 172 from being dry heated. Specifically, the outer periphery of the liquid supply pipe 25 and the outer periphery of the electrode assembly 60 are absolutely insulated in the areas outside the connection between the upper end of the liquid supply pipe 25 and the buffer cavity 110 and the connection between the lower end of the liquid supply pipe 25 and the controller 24, and the connection between the upper end of the electrode assembly 60 and the heating cavity 1710 and the connection between the lower end of the electrode assembly 60 and the controller 24. In this embodiment, the outer wall surface of the liquid supply pipe 25 is wrapped by the insulation sealing seat 132 and the sealing sleeve 27, so that the liquid supply pipe 25 and the electrode assembly 60 are insulated from each other in the predetermined areas.

[0098] Furthermore, to further improve the reliability of the circuit between the liquid supply tube 25 and the electrode assembly 60, a circuit breaker detection module can be provided to detect circuit breaks in the liquid supply tube 25 and / or the electrode assembly 60. By detecting circuit breaks in the liquid supply tube 25 itself, the problem of continuous liquid supply and serious leakage caused by the failure of the liquid supply tube 25 itself can be prevented. By detecting circuit breaks in the electrode assembly 60, if the electrode assembly 60 fails and causes a circuit break, it is determined that the second electrode post 16 and the first electrode post 26 are not conductive, and it is determined that the atomizer 1 is not connected to the main unit 2, and the system does not work. In some embodiments, this circuit breaker detection can be implemented through a redundant design. For example, at least two parallel wires can be led out from the controller 24 and connected to the liquid supply tube 25. If a circuit break is caused by the failure of the liquid supply tube 25, the controller 24 outputs a shut-off signal to the liquid transfer assembly 23 to stop the liquid supply.

[0099] Furthermore, each liquid supply pipe 25 and the corresponding electrode assembly 60 constitute a liquid level detection circuit, thereby realizing dual-sided liquid level detection of the buffer chambers 110 on both sides, thus accommodating scenarios where the electronic atomizing device is used at an angle. During detection, if both sides of the liquid level detection are open, the liquid transmission assembly 23 stops supplying liquid; if one side is open and the other side is closed, the liquid transmission assembly 23 stops supplying liquid; if both sides of the liquid level detection are closed, the liquid transmission assembly 23 starts supplying liquid. It is understood that in other embodiments, a liquid level detection circuit may be provided only on one side.

[0100] Understandably, in other embodiments, the liquid level of the atomizer 1 can also be detected by other liquid level detection structures. For example, an additional liquid level detection element can be provided in the buffer chamber 110 for liquid level detection.

[0101] like Figure 10 As shown, the liquid level detection circuit in this embodiment includes a MOS transistor U1, resistors R1, R2, and R3, and an operational amplifier Q1.

[0102] The controller 24 includes an MCU. The OIL_EN pin of the MCU is connected to the gate of the MOSFET U1, the AD_T pin of the MCU acquires the sampling signal output by the operational amplifier Q1 in real time, the VCC pin of the MCU is connected to the positive terminal of the power supply, and the GND pin of the MCU is grounded. Specifically, the MCU can sample the AD_T pin in real time using the ADC at a constant sampling frequency and calculate the resistance value Rs of the atomizing liquid according to the principle that the voltage ratio equals the resistance ratio.

[0103] The gate of the MOS tube U1 is connected with the OIL_EN pin of the MCU through the resistor R1, the source of the MOS tube U1 is connected with the positive pole of the power supply, and the drain of the MOS tube U1 is connected with the first end of the resistor R2. The second end of R2 is connected with the non-inverting input terminal of the operational amplifier Q1 and the resistor R3, and the inverting input terminal of the operational amplifier Q1 is connected with the output terminal thereof. The first end of the resistor R3 is connected with the detection terminal S, and the second end of the resistor R3 is connected with the second end of R2 and the non-inverting input terminal of the operational amplifier Q1. The detection terminal S can be connected with the upper end of the liquid supply pipe 25. The negative pole of the heating element 172 is grounded.

[0104] The MOS tube and the resistor R1 form a switch circuit. When it is needed to detect the atomized liquid capacity in the atomizer 1, the OIL_EN pin is pulled down, the MOS tube U1 is turned on, and the power supply voltage is applied to the resistor R2. The voltage value is measured in real time through the AD_T pin of the MCU. Since the atomized liquid usually has a high resistance, when the atomized liquid in the atomizer 1 is sufficient, the liquid supply pipe 25 and the heating element 172 are connected through the atomized liquid to form a loop, and the detected resistance Rs is equal to a low resistance; when the atomized liquid in the atomizer 1 is insufficient, the liquid supply pipe 25 and the heating element 172 cannot be connected through the atomized liquid to form a loop, and the detected resistance Rs is equal to a high resistance.

[0105] The circuit of the embodiment is simple and low in cost, and the capacity state of the atomized liquid in the atomizer 1 can be derived without a complex operation method; when it is not needed to detect the capacity state of the atomized liquid in the atomizer 1, the detection output voltage can be disconnected, and the safety is good; in addition, the circuit does not need a sensor, and the detection terminal can be realized through a wire, and the realization is simple.

[0106] Figure 11 The electronic atomization device in the second embodiment of the application is shown, and the main difference from the first embodiment is that the detection terminal S in the embodiment is connected at the interface 2390 of the liquid outlet pipe 34 and the liquid supply pipe 239 of the liquid storage unit 3, so that the influence of the external environment can be effectively avoided, and the accuracy is high.

[0107] Figure 12 The electronic atomization device in the third embodiment of the application is shown, and the main difference from the first embodiment is that two detection terminals S1 and S2 are used for signal acquisition in the embodiment, the signal detection points of the two detection terminals S1 and S2 are different in height in the buffer cavity 110, and the capacity state of the atomized liquid in the buffer cavity 110 can be more accurately measured.

[0108] Specifically, the upper ends of the detection terminals S1 and S2 both extend into the buffer cavity 110, and the upper end face of the detection terminal S1 (the end face close to the suction nozzle 12) is higher than the upper end face of the detection terminal S2, that is, the upper end face of the detection terminal S1 is closer to the suction nozzle 12 than the upper end face of the detection terminal S2. The detection terminals S1 and S2 can be arranged on the same side of the atomizing core 17, and in other embodiments, the detection terminals S1 and S2 can also be arranged on different sides of the atomizing core 17. The outer periphery of the detection terminals S1 and S2 is insulated, the two end faces of the detection terminals S1 and S2 are conductive, and the signal detection points of the detection terminals S1 and S2 are respectively located at the upper end faces thereof.

[0109] As shown in FIG. 1, the liquid level detection circuit in the embodiment includes a MOS tube U1, an operational amplifier Q1, an operational amplifier Q2, resistors R1, R2, R3, R4, and R5. Figure 13

[0110] The OIL_EN pin of the MCU is connected to the gate of the MOS tube U1, the AD_T1 pin of the MCU is used to collect the sampling signal output by the operational amplifier Q1 in real time, the AD_T2 pin of the MCU is used to collect the sampling signal output by the operational amplifier Q2 in real time, the VCC pin of the MCU is connected to the positive pole of the power supply, and the GND pin of the MCU is grounded.

[0111] The gate of the MOS tube U1 is connected to the OIL_EN pin of the MCU through the resistor R1, the source of the MOS tube U1 is connected to the positive pole of the power supply, and the drain of the MOS tube U1 is connected to the first end of the resistor R2 and the first end of the resistor R3. The second end of R2 is connected to the non-inverting input terminal of the operational amplifier Q1 and the resistor R4, the inverting input terminal of the operational amplifier Q1 is connected to the output terminal thereof, the first end of the resistor R4 is connected to the detection terminal S1, and the second end of the resistor R4 is connected to the second end of R2 and the non-inverting input terminal of the operational amplifier Q1.

[0112] The second end of R3 is connected to the non-inverting input terminal of the operational amplifier Q2 and the resistor R5, the inverting input terminal of the operational amplifier Q2 is connected to the output terminal thereof, the first end of the resistor R5 is connected to the detection terminal S2, and the second end of the resistor R5 is connected to the second end of R3 and the non-inverting input terminal of the operational amplifier Q2.

[0113] When it is necessary to detect the atomizing liquid capacity state in the atomizer 1, the OIL_EN pin is pulled low to turn on the MOS tube U1, and the power supply voltage is applied to the resistors R2 and R3. The voltage values are measured in real time through the AD_T1 and AD_T2 pins of the MCU, and whether the capacity of the atomizing liquid in the buffer cavity 110 reaches the height at which the detection terminals S1 and S2 are located in the buffer cavity 110 is determined according to the contact of the detection terminals S1 and S2 to the atomizing liquid.

[0114] ​In the embodiment, the detection terminal S2 is used as a detection comparison reference, the detection terminal S1 is used to judge the capacity state of the atomized liquid in the buffer cavity 110, and the negative electrode of the atomizing core 17 is used as a signal loop GND. The MCU performs real-time ADC sampling on the AD_T1 and AD_T2 pins at a constant sampling frequency, calculates the resistance values Rs1 and Rs2 of the atomized liquid according to the principle that the voltage ratio is equal to the resistance ratio, and can determine the capacity state of the atomized liquid in the buffer cavity 110 according to the following algorithm:

[0115] T0 state:

[0116] The T0 state is an initial state or a state in which a small amount of atomized liquid remains in a new atomizer or an old atomizer. At this time, the detection points of the detection terminals S1 and S2 do not contact the atomized liquid, the resistance value Rs1_0 detected by the detection terminal S1 and the resistance value Rs2_0 detected by the detection terminal S2 are equal to a high resistance value, which is approximately infinite, that is, (Rs1_0≈Rs2_0)=high resistance / micro conduction.

[0117] T1 state:

[0118] The T1 state is a half-tank state or a critical state. At this time, the detection point of the detection terminal S1 contacts the atomized liquid and is conductive, the resistance value Rs1_1 detected by the detection terminal S1 has a certain atomized liquid resistance value, the detection point of the detection terminal S2 does not contact the atomized liquid and is disconnected, the resistance value Rs2_1 detected by the detection terminal S2 is equal to a high resistance value, that is, Rs2_1>>Rs1_1)&&(Rs2_1≈Rs2_0), and (Rs1_1<<Rs1_0).

[0119] T2 state:

[0120] The T2 state is a full-tank state. At this time, the detection points of the detection terminals S1 and S2 contact the atomized liquid and are conductive, the resistance value Rs1_2 detected by the detection terminal S1 and the resistance value Rs2_2 detected by the detection terminal S2 both have a certain atomized liquid resistance value, that is, (Rs1_2≈Rs2_2)<<(Rs1_0≈Rs2_0), and (Rs1_2≈Rs2_2)<<Rs2_1.

[0121] In the embodiment, two detection terminals are used to judge the capacity state of the atomized liquid in the buffer cavity 110 by using the relative resistance value method, which solves the misjudgment problem caused by using one detection terminal by the absolute value method and has higher accuracy.

[0122] Figure 14The electronic atomization device in the fourth embodiment of the present application is shown, and the main difference from the first embodiment is that the liquid supply pipe 25a in the present embodiment has a longer axial length than the liquid supply pipe 25 in the first embodiment, and specifically, the upper end of the liquid supply pipe 25a can extend into the first buffer cavity 111, so that the support pipe 15 does not need to be arranged in the liquid supply channel 1320.

[0123] In the present embodiment, the liquid supply pipe 25a can include a first liquid supply pipe 251 and a second liquid supply pipe 252 which are sleeved with each other. The lower end of the first liquid supply pipe 251 can be embedded on the support assembly 28 and communicate with the liquid transmission assembly 23, and the upper end can pass through the blocking wall 1321 and be inserted into the second liquid supply pipe 251, and the blocking wall 1321 can be located at the middle of the liquid supply channel 1320. The upper end of the second liquid supply pipe 251 can be embedded in the first buffer cavity 111 and communicate with the first buffer cavity 111, and the lower end can extend downwardly into the liquid supply channel 1320 and be located above the blocking wall 1321. It can be understood that in other embodiments, the liquid supply pipe 25a can also be a one-piece structure.

[0124] Figures 15-16 The electronic atomization device in the fifth embodiment of the present application is shown, and the main difference from the first embodiment is that the electronic atomization device in the present embodiment is provided with only one liquid supply pipe 25b on one side, and the liquid supply pipe 25b can include a first liquid supply unit 251 arranged on the support assembly 28 and a second liquid supply unit 252 arranged on the base assembly 13. The second liquid supply unit 252 is in a normally closed state, and when the atomizer 1 and the main machine 2 are separated from each other, the second liquid supply unit 252 remains in a closed state, so as to ensure that the atomizer 1 does not leak liquid in a single state. After the atomizer 1 and the main machine 2 are assembled, the first liquid supply unit 251 and the second liquid supply unit 252 interact and are conducted, so as to communicate the buffer cavity 110 with the liquid transmission assembly 23.

[0125] The first liquid supply unit 251 can include a first liquid supply pipe 253 which is embedded on the support assembly 28 in the longitudinal direction, and the lower end of the first liquid supply pipe 253 communicates with the pump liquid pipe 235 and communicates with the liquid transmission assembly 23 through the pump liquid pipe 235. Further, the first liquid supply unit 251 can also include a thimble 255 and an elastic member 254 connected with the first liquid supply pipe 253 and the thimble 255 respectively. The thimble 255 can be in a circular tube shape and can be made of a conductive material such as metal, and can be embedded on the top of the support assembly 28. The upper end surface of the thimble 255 can be substantially flush with the upper end surface of the support assembly 28, or it can be higher than the upper end surface of the support assembly 28. The elastic member 254 can be a metal spring, and the upper end of the elastic member 254 can elastically abut against the lower end surface of the thimble 255, and the lower end of the elastic member 254 can elastically abut against the upper end surface of the first liquid supply pipe 253.

[0126] The second liquid supply unit 252 can include a second liquid supply pipe 257 and a sealing plug 259 arranged at one end of the second liquid supply pipe 257 towards the buffer cavity 110. The base assembly 13 is formed with a receiving cavity 130 for accommodating the second liquid supply unit 252, the receiving cavity 130 having a first opening 1302 towards the buffer cavity 110 and a second opening 1301 towards the host 2. The second liquid supply pipe 257 is arranged in the receiving cavity 130 and can move up and down in the receiving cavity 130, and the second liquid supply pipe 257 is formed with a liquid supply hole 2570. The sealing plug 259 is fitted at the first opening 1302, for closing the first opening 1302 when the atomizer 1 is separated from the host 2, so as to seal the buffer cavity 110 and prevent the atomized liquid in the buffer cavity 110 from leaking through the first opening 1302; and for opening the first opening 1302 after the atomizer 1 is assembled with the host 2, so as to enable the second liquid supply pipe 257 to communicate with the buffer cavity 110 through the liquid supply hole 2570 and the first opening 1302.

[0127] Specifically, the sealing plug 259 can include a plug-in portion 2591 plugged into the upper end of the second liquid supply pipe 257 and a pressing portion 2892 extending radially outward from the upper end of the plug-in portion 2591. The second liquid supply pipe 257 and the sealing plug 259 can be made of conductive materials such as metal, and the sealing plug 259 can be installed on the second liquid supply pipe 257 by riveting. It can be understood that in other embodiments, the sealing plug 259 and the second liquid supply pipe 257 can also be an integral structure. The first opening 1302 can be formed in the sealing seat 132 of the base assembly 13, and specifically, an annular inner flange 1321 can be formed in the sealing seat 132, and the inner wall surface of the inner flange 1321 defines the first opening 1302. When the atomizer 1 is separated from the host 2, the pressing portion 2892 abuts against the upper end surface of the inner flange 1321, thereby closing the first opening 1302. Since the sealing seat 132 is made of soft materials such as silica gel, the sealing effect of the first opening 1302 can be improved. In addition, the upper end aperture of the first opening 1302 can gradually increase from the side towards the buffer cavity 110 to the side away from the buffer cavity 110, and the lower end outer diameter of the pressing portion 2892 can gradually decrease from the side towards the buffer cavity 110 to the side away from the buffer cavity 110, so that the pressing portion 2892 can tightly fit with the inner flange 1321, further improving the sealing effect.

[0128] In some embodiments, the second liquid supply unit 252 can further include a sealing sleeve 256 and an elastic member 258. The sealing sleeve 256 can be made of soft material such as silica gel, and is sleeved on the end of the second liquid supply pipe 257 facing the host 2, and the outer wall surface of the sealing sleeve 256 is in sealing cooperation with the inner wall surface of the cavity 130, so as to further improve the liquid leakage prevention effect. The elastic member 258 can be a metal spring and is sleeved on the second liquid supply pipe 257, and the upper end of the elastic member 258 can abut against the inner flange 1321, and the lower end can abut against the sealing sleeve 256. When the atomizer 1 is separated from the host 2, the pressing part 2892 can be elastically abutted against the inner flange 1321 under the action of the elastic member 258, so as to close the first opening 1302.

[0129] The sealing sleeve 256, the second liquid supply pipe 257, the elastic member 258 and the sealing plug 259 cooperatively form a one-way valve structure. As shown in Figure 11 When the atomizer 1 is separated from the host 2, the elastic member 258 is in a natural state, the lower end surface of the sealing sleeve 256 and the lower end surface of the second liquid supply pipe 257 are substantially flush with the lower end surface of the base assembly 13, and the pressing part 2892 is abutted against the upper end surface of the inner flange 1321, so as to close the first opening 1302 and isolate the liquid supply hole 2570 from the buffer cavity 110. As shown in Figure 12 When the atomizer 1 is inserted into the host 2, the sealing sleeve 256, the second liquid supply pipe 257 and the sealing plug 259 move in the direction towards the buffer cavity 110 under the pushing force of the ejector pin 255, the lower end of the elastic member 258 moves upward to compress the elastic member 258, the pressing part 2892 moves upward to separate from the inner flange 1321, and the first opening 1302 is opened, so that the atomized liquid in the second liquid supply pipe 257 can flow into the buffer cavity 110 through the liquid supply hole 2570 and the first opening 1302.

[0130] Figures 17-19 The electronic atomization device in the sixth embodiment of the present application is shown, and the main difference from the first embodiment is that the vent pipe 177 in the present embodiment is not provided with a pressure relief hole, and the atomizer 1 in the present embodiment is provided with a pressure relief module 18 in the atomization shell 11 to realize pressure relief when the liquid supply pipe 25 supplies liquid to the buffer cavity 110.

[0131] The pressure relief module 18 can include a pressure relief pipe 182 and a piston 183. An upper end of the liquid supply pipe 25 can be inserted into the pressure relief pipe 182 and communicate with the pressure relief pipe 182. A side wall of the pressure relief pipe 182 is provided with liquid outlet holes 1821 that communicate between the inside and outside. An end of the pressure relief pipe 182 away from the liquid supply pipe 25 is formed with a pressure relief opening 1872. The piston 183 is movably arranged in the pressure relief pipe 182. When the liquid supply pipe 25 starts to supply liquid, the piston 183 can be moved from a first position to a second position under the action of the liquid pressure, so as to open the liquid outlet holes 1821 and the pressure relief opening 1872, and realize liquid supply and pressure relief at the same time, so that the liquid supply is smooth.

[0132] The lower end of the pressure relief pipe 182 can be embedded on the base assembly 13 and fixed. In some embodiments, the pressure relief pipe 182 can be a circular pipe, which can include a first pipe segment 1823 at a lower portion that communicates with the liquid supply pipe 25 and a second pipe segment 1826 at an upper portion that communicates with the first pipe segment 1823. It can be understood that in other embodiments, the pressure relief pipe 182 can also be a square pipe, an oval pipe or other shapes. The outer diameter of the first pipe segment 1823 can be the same as the outer diameter of the second pipe segment 1826, and the inner diameter of the first pipe segment 1823 can be smaller than the inner diameter of the second pipe segment 1826, that is, the hole diameter of a first cavity 1824 formed in the first pipe segment 1823 is smaller than the hole diameter of a second cavity 1827 formed in the second pipe segment 1826. The intersection of the first cavity 1824 and the second cavity 1827 is formed with a step 1825, which can be used to limit the axial position of the piston 183 in the pressure relief pipe 182. The liquid outlet holes 1821 are provided on the side wall of the second pipe segment 1826 and can be arranged close to the step 1825. The side wall of the second pipe segment 1826 can also be provided with pressure relief holes 1822, which are spaced apart in the axial direction of the second pipe segment 1826. The pressure relief holes 1822 are located above the liquid outlet holes 1821 and on the side away from the step 1825. The pressure relief holes 1822 and the liquid outlet holes 1821 can be arranged in line or staggered in the circumferential direction of the second pipe segment 1826.

[0133] The piston 183 is movably arranged in the second pipe segment 1826. When the piston 183 is in the first position, the lower end surface of the piston 183 is lower than the liquid outlet holes 1821, so as to block the liquid outlet holes 1821, and the atomized liquid in the buffer cavity 110 will not leak through the liquid outlet holes 1821. When the liquid supply pipe 25 starts to supply liquid, the piston 183 is moved upward to the second position under the action of the liquid pressure of the atomized liquid, and at this time, the piston 183 is located between the liquid outlet holes 1821 and the pressure relief holes 1822 in the height direction. The liquid outlet holes 1821 are opened, and the atomized liquid in the pressure relief pipe 182 can enter the buffer cavity 110 through the liquid outlet holes 1821, and at the same time, the air in the buffer cavity 110 is relieved to the outside of the atomizer 1 through the pressure relief holes 1822.

[0134] In some embodiments, the outer diameter of the piston 183 is large at both ends and small in the middle, and the outer diameter of the piston 183 can gradually decrease first and then gradually increase from top to bottom, showing a smooth transition. The outer wall surface of both ends of the piston 183 is in sealing cooperation with the inner wall surface of the second pipe section 1826, and the outer wall surface of the middle part of the piston 183 is in gap cooperation with the inner wall surface of the second pipe section 1826, which can reduce the friction when the piston 183 moves in the second pipe section 1826. It can be understood that in other embodiments, the piston 183 can also have other shapes, for example, it can also have a stepped shape or a straight column shape.

[0135] The pressure relief module 18 can also include a sealing sleeve 181 arranged at the lower end of the pressure relief pipe 182 to prevent liquid leakage in some embodiments. The sealing sleeve 181 can be made of soft materials such as silica gel, and the upper end of the liquid supply pipe 25 can pass through the sealing sleeve 181 and extend into the pressure relief pipe 182 in a sealed manner. The sealing sleeve 181 is embedded in the bottom of the pressure relief pipe 182, the outer surface of the sealing sleeve 181 is in sealing cooperation with the inner surface of the pressure relief pipe 182, and the bottom surface of the sealing sleeve 181 can be substantially flush with the bottom surface of the pressure relief pipe 182. A baffle wall 1811 can be formed in the sealing sleeve 181, and the baffle wall 1811 can have a concave circular arc shape. A cut groove 1812 is formed on the baffle wall 1811, and the cut groove 1812 can have a slot shape. When the atomizer 1 is inserted into the host 2, the liquid supply pipe 25 can pass through the cut groove 1812 on the baffle wall 1811 and extend into the pressure relief pipe 182 to communicate with the pressure relief pipe 182; after the atomizer 1 is pulled out of the host 2, the cut groove 1812 on the baffle wall 1811 is closed and sealed to prevent the atomized liquid in the pressure relief pipe 182 from flowing out. It can be understood that in other embodiments, the cut groove 1812 can also have other shapes such as Y-shaped groove, cross-shaped groove, etc.

[0136] In some embodiments, the pressure relief module 18 can also include a piston rod 184 fixedly connected with the piston 183 and movable together with the piston 183 in the pressure relief pipe 182, an elastic element 185 sleeved on the piston rod 184, a sealing element 186 fixed at the end of the piston rod 184 away from the piston 183, and a fixed pipe 187 arranged at the upper end of the pressure relief pipe 182.

[0137] The piston rod 184 can include a rod portion 1841 movably arranged in the pressure relief pipe 182 in the longitudinal direction and a head portion 1842 arranged at the upper end of the rod portion 1841. The lower end of the rod portion 1841 can be embedded in the piston 183 and fixedly connected with the piston 183. The head portion 1842 can be formed by the outer wall surface of the upper end of the rod portion 1841 extending radially outward.

[0138] The fixing tube 187 is embedded in the upper end of the pressure relief tube 182 and can be riveted to the pressure relief tube 182. An annular flange 1871 is formed inside the fixing tube 187, and the inner wall surface of the annular flange 1871 defines the pressure relief port 1872. The sealing element 186 can be made of elastic material such as silicone. The sealing element 186 is sleeved on the rod 1841. The upper end face of the sealing element 186 can abut against the lower end face of the rod 1841, and the lower end face of the sealing element 186 can movably abut against the annular flange 1871, thereby sealing or opening the pressure relief port 1872. The elastic element 185 can be a spring, the lower end face of which can abut against the piston 183, and the upper end face of which can abut against the annular flange 1871.

[0139] like Figure 17 As shown, when piston 183 is in the first position, the lower end face of piston 183 can abut against step 1825, and the upper end face of piston rod 184 can be approximately flush with the upper end face of fixed tube 187. The liquid outlet 1821 is blocked by piston 183, and the first cavity 1824 is in a closed state, thus isolating it from the buffer cavity 110. The atomized liquid in the first cavity 1824 cannot enter the buffer cavity 110 through the liquid outlet 1821. The lower end face of seal 186 abuts against the upper end face of annular flange 1871, thereby blocking pressure relief port 1872, preventing leakage of the atomized liquid in the buffer cavity 110 through pressure relief port 1872.

[0140] like Figure 18 As shown, when the liquid supply pipe 25 starts supplying liquid, the atomizing liquid fills the first cavity 1824. The piston 183 moves upward to the second position under the push of the atomizing liquid, and the elastic element 185 is compressed. At this time, the piston 183 moves upward between the liquid outlet 1821 and the pressure relief hole 1822, thereby opening the liquid outlet 1821. The atomizing liquid in the pressure relief pipe 182 enters the buffer cavity 110 through the liquid outlet 1821, realizing the supply of liquid to the buffer cavity 110. At the same time, the sealing element 186 moves upward and separates from the annular flange 1871, and the pressure relief port 1872 opens. The air in the buffer cavity 110 can enter the second cavity 1827 through the pressure relief hole 1822, and then be depressurized to the outside of the atomizer 1 through the pressure relief port 1872, thereby depressurizing while supplying liquid, making the liquid supply smooth.

[0141] It is understood that the above-mentioned technical features can be used in any combination without limitation. In particular, the features described in the above embodiments, such as liquid level detection, start / stop control of the liquid transfer component, liquid supply structure, and pressure relief structure, are all universal.

[0142] The above examples only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation to the patent scope of the present application; it should be noted that the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. An atomizer characterized by, The atomizer comprises: an atomizing shell (11) in which a buffer cavity (110) and a liquid supply channel (1320) for supplying liquid to the buffer cavity (110) are formed; a nozzle cover (12) arranged at an upper end of the atomizing shell (11) and in which an air outlet channel (120) is formed; an atomizing core (17) arranged in the atomizing shell (11) and in communication with the buffer cavity (110); and a breather tube (177) arranged in the atomizing shell (11) and in communication with the air outlet channel (120), a wall surface of the breather tube (177) being provided with a pressure relief hole (1771) for connecting the buffer cavity (110) with the outside and relieving pressure when liquid is supplied to the buffer cavity (110).

2. The atomizer of claim 1, wherein, The pressure relief hole (1771) has a cross-sectional size within a set range, so that an inner surface of the pressure relief hole (1771) can form a surface tension film.

3. The atomizer of claim 1, wherein, The pressure relief hole (1771) has a diameter of 0.4-1.0 mm.

4. The atomizer of claim 1, wherein, The pressure relief hole (1771) has a diameter of 0.6-0.8 mm.

5. The atomizer of any of claims 1-4, wherein, The pressure relief hole (1771) is located flush with or higher than an upper end surface of the atomizing core (17).

6. The atomizer of any of claims 1-4, wherein, The pressure relief hole (1771) is located flush with or higher than an upper end surface of the buffer cavity (110).

7. The atomizer of any of claims 1-4, wherein, The atomizer further comprises a base assembly (13) arranged at a lower end of the atomizing shell (11), and the liquid supply channel (1320) is formed in the base assembly (13).

8. The atomizer of claim 7, wherein, The base assembly (13) comprises a soft sealing seat (132), and the liquid supply channel (1320) is formed in the sealing seat (132).

9. The atomizer of claim 8, wherein, The liquid supply channel (1320) is formed with a barrier wall (1321) provided with a cut groove through which a liquid supply pipe can pass, and the cut groove is closed and sealed when the liquid supply pipe is separated from the liquid supply channel (1320).

10. The atomizer of any of claims 1-4, wherein, The atomizing core (17) is arranged in the breather tube (177), and the atomizing core (17) comprises a heating element (172) and a liquid absorbing element (171) wrapped outside the heating element (172) and in communication with the buffer cavity (110).

11. The atomizer of any of claims 1-4, wherein, The atomizer further comprises a liquid accumulation element (178) sleeved outside the breather tube (177) and in communication with the buffer cavity (110).

12. The atomizer of claim 11, wherein, The buffer cavity (110) comprises a first buffer cavity (111) located at a lower portion and in communication with the liquid supply channel (1320), and a second buffer cavity (112) located at an upper portion and in communication with the first buffer cavity (111), and the atomizing shell (11) is further formed with a first liquid outlet (114) connecting the first buffer cavity (111) with a lower end of the liquid accumulation element (178) and a second liquid outlet (115) connecting the second buffer cavity (112) with an upper end of the liquid accumulation element (178).

13. The atomizer of claim 12, wherein, The first buffer cavity (111) has a cross-sectional area smaller than that of the second buffer cavity (112).

14. The atomizer of any of claims 1-4, wherein, The air pipe (177) is coaxially arranged with the atomization shell (11).

15. The atomizer of any of claims 1-4, wherein, Two buffer cavities (110) are formed in the atomization shell (11) and are respectively arranged on two sides of the atomization shell (11).

16. An electronic atomizing device, characterized by, The electronic atomization device comprises a host (2) and the atomizer (1) according to any one of claims 1-15; the host (2) comprises a liquid supply pipe (25) penetrating through the liquid supply channel (1320) and a liquid transmission assembly (23) connected with the liquid supply pipe (25) and used for driving atomization liquid.

17. The electronic atomizing device of claim 16, wherein, The electronic atomization device further comprises a liquid storage unit (3) connected with the liquid transmission assembly (23); the liquid storage unit (3) is arranged to be separable from the atomizer (1).

18. The electronic atomizing device of claim 16, wherein, The electronic atomization device further comprises a controller (24) electrically connected with the liquid transmission assembly (23) to control start and stop of the liquid transmission assembly (23).

19. The electronic atomizing device of claim 18, wherein, The atomization core (17) comprises a heating element (172); the liquid supply pipe (25) is conductive; the liquid supply pipe (25) and the heating element (172) are respectively electrically connected with two poles of the controller (24); the liquid supply pipe and the heating element (172) can form a path or a circuit under the action of the atomization liquid; the controller (24) can control the liquid transmission assembly (23) to start supplying liquid based on a circuit breaking state between the liquid supply pipe (25) and the heating element (172).

20. The electronic atomizing device of claim 19, wherein, Both ends of the liquid supply pipe (25) are conductive; the outer periphery of the liquid supply pipe (25) is insulated.

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