WO2023077852A1 - Atomizer and aerosol generating device - Google Patents

Abstract

An atomizer (10) and an aerosol generating device. The atomizer (10) comprises an atomizer housing (110), a ventilation tube (120) that at least partially penetrates the atomizer housing (110), and an atomization core (130). The atomizer housing (110) forms an accommodating cavity (111), and a first through hole (121) that communicates with the accommodating cavity (111) is formed on the ventilation tube (120); when the atomizer (10) is assembled with a main machine (20), the main machine (20) may act on the atomization core (130), such that the atomization core (130) may drive the ventilation tube (120) to move in a direction close to a nozzle opening (112) relative to the atomizer housing (110), and thus the first through hole (121) is opened, allowing the accommodating cavity (111) that accommodates an atomizing matrix to communicate with the inside of the ventilation tube (120), and the aerosol generating device may work normally; and when the atomizer (10) is disassembled from the main machine (20), the force on the atomizer (10) causes the atomization core (130) to drive the ventilation tube (120) to move in a direction away from the nozzle opening (112) relative to the atomizer housing (110), and thus the first through hole (121) is closed, allowing the atomizing matrix to not be easily leaked during the replacement process of the atomization core (130). The assembly and disassembly processes of the atomization core (130) is simple, and the atomizing matrix in the atomizer (10) does not need to be emptied, which facilitates conserving the atomizing matrix.

Description

A nebulizer and an aerosol generating device

technical field

The present application relates to the field of aerosol technology, in particular to an atomizer and an aerosol generating device.

Background technique

The aerosol generating device generally includes an atomizer and a host, and the host is used to supply power to the atomizer so that the atomizer can heat the atomized substrate to form an aerosol, wherein the atomizer and the host can be detachably connected . For existing atomizers, the atomization core can be replaced as needed, and the atomization matrix can also be refilled.

At present, before replacing the atomizing core, the atomizing matrix in the atomizer needs to be emptied before the atomizing core can be replaced, and the operation of injecting the atomizing matrix can only be performed after the atomizing core is assembled, the operation process is complicated, and It is easy to cause waste of atomized substrate.

Contents of the invention

The present application provides an atomizer and an aerosol generating device to solve the technical problems in the prior art that the replacement process of the atomization core is complicated and the atomization substrate is easily wasted.

In order to solve the above technical problems, a technical solution adopted by this application is to provide an atomizer, including:

The shell of the nebulizer forms an accommodating cavity and a nozzle opening;

A ventilation tube is at least partly set through the atomizer housing and communicates with the mouth of the suction nozzle, and a first through hole is formed on the ventilation tube, and the first through hole is used to connect the accommodating cavity with the mouth of the suction nozzle. internal communication of the vent pipe;

The atomizing core is arranged in the ventilation pipe;

Wherein, when the atomizer is assembled with the main engine, the main engine can act on the atomizing core, so that the atomizing core can drive the air pipe relative to the shell of the atomizer toward the mouth of the suction nozzle. direction, thereby opening the first through hole; when the atomizer is disassembled from the host, the atomizer is stressed so that the atomizing core drives the air pipe relative to the atomizer The housing moves away from the mouth of the suction nozzle, thereby closing the first through hole.

In a specific embodiment, the atomizer further includes a base and a sealing body, the housing of the atomizer is arranged on the base, and the sealing body is arranged between the housing of the atomizer and the ventilation pipe During the period, when the air pipe moves relative to the atomizer shell, the sealing body can block the first through hole.

In a specific embodiment, the atomizer includes a first connecting part, the host includes a second connecting part, the first connecting part is mated with the second connecting part, and the sealing body is connected to the The frictional force between the vent tubes is less than the minimum force required to separate the first connection part and the second connection part.

In a specific embodiment, one of the first connecting part and the second connecting part is an insertion slot, and the other of the first connecting part and the second connecting part is an insertion slot. The insertion groove is provided with at least two first conductive rings spaced along the first direction, and the insertion protrusion is provided with at least two second conductive rings spaced along the first direction. ring, the atomizing core is electrically connected to the first conductive ring or the second conductive ring, when the insertion protrusion is inserted into the insertion groove, the first conductive ring and the second conductive ring The two conductive rings are abutted for conduction.

In a specific embodiment, when the insertion protrusion is inserted into the insertion groove, at least two of the first conductive rings and at least two of the second conductive rings are respectively nested, so that the The inner wall of the first conductive ring is at least partially in contact with the outer wall of the second conductive ring.

In a specific embodiment, the first conductive ring and the second conductive ring are arranged in an interference fit.

In a specific embodiment, the atomizing core further includes a heating element accommodating tube and a heating element, the heating element accommodating tube is nested in the ventilation tube, and the heating element is arranged in the heating element accommodating tube The heating element accommodating tube is formed with a second through hole, and the second through hole communicates with the first through hole.

In a specific embodiment, the atomizer includes a first sealing ring and/or a second sealing ring, the first sealing ring and the second sealing ring are respectively arranged on the ventilation pipe and the heating element The first sealing ring and the second sealing ring are respectively located at two ends of the second through hole.

In a specific embodiment, the base includes a protrusion protruding from the sealing body, and the protrusion is used to abut against the ventilation pipe.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide an aerosol generating device, including the above-mentioned atomizer and a host, the atomizer is electrically connected to the host, and the host is used for Power is supplied to the nebulizer.

In a specific embodiment, the host includes a host shell, a bracket set on the host shell, a battery and a controller set in the host shell, and the insertion groove or the insertion protrusion is formed on the On the bracket, the controller is electrically connected to the battery, the controller is electrically connected to the first conductive ring or the second conductive ring, and the bracket is also formed with a a first airway and a second airway extending in a third direction perpendicular to the first direction, the first airway can communicate with the ventilation tube, and the second airway is respectively connected to the first airway One airway communicates with the outside world.

The atomizer of the present application includes an atomizer shell, a vent tube and an atomizing core. The shell of the atomizer forms a housing chamber and a nozzle opening. The housing chamber is used to accommodate the atomized substrate. The device shell is set and communicated with the mouth of the suction nozzle. A first through hole is formed on the air pipe. The first through hole is used to communicate the accommodating cavity with the inside of the air pipe. The atomizing core is arranged in the air pipe, wherein the atomizer When the device is assembled with the host, the host can act on the atomizing core, so that the atomizing core can drive the air pipe to move relative to the shell of the atomizer to the direction close to the mouth of the nozzle, and then open the first through hole to accommodate the atomizer. The accommodating cavity of the matrix is connected with the air pipe, and the aerosol generating device can be used normally; when the nebulizer is separated from the main unit, the force on the nebulizer makes the atomizing core drive the air pipe to move away from the mouth of the mouth relative to the shell of the nebulizer. Direction movement, and then make the first through hole close, so that the atomization matrix is not easy to leak during the atomization core replacement process, the disassembly process of the atomization core is simple and does not need to empty the atomization matrix in the atomizer, which is beneficial to save atomization matrix.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, in which:

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the atomizer of the present application when no force is applied;

Fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the atomizer of the present application after being stressed;

Fig. 3 is a three-dimensional structural schematic diagram of an embodiment of the aerosol generating device of the present application;

Fig. 4 is a schematic cross-sectional structure diagram of an embodiment of the aerosol generating device of the present application when no force is applied;

Fig. 5 is a schematic cross-sectional structure diagram of an embodiment of the aerosol generating device of the present application after being stressed;

Fig. 6 is an exploded schematic diagram of part of the structure of the aerosol generating device embodiment of the present application;

Fig. 7 is a schematic cross-sectional structure diagram of the host in the embodiment of the aerosol generating device of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first" and "second" in this application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses. The term "and/or" is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Referring to Fig. 1 and Fig. 2, the embodiment of the nebulizer 10 of the present application includes a nebulizer shell 110, a ventilation pipe 120 and an atomizing core 130, and the nebulizer shell 110 forms an accommodating chamber 111 and a nozzle opening 112 for accommodating The cavity 111 is used to accommodate the atomized substance (not shown in the figure), the air pipe 120 is at least partly set through the atomizer shell 110, and communicates with the mouthpiece 112, and the air pipe 120 is formed with a first through hole 121, The first through hole 121 is used to connect the accommodating cavity 111 with the inside of the air pipe 120, and the atomizing core 130 is arranged in the air pipe 120, wherein, when the atomizer 10 is assembled with the main machine 20, the main machine 20 can act on the atomization The core 130, so that the atomizing core 130 can drive the air pipe 120 to move relative to the atomizer shell 110 to the direction close to the mouthpiece 112, so that the first through hole 121 is opened, so that the accommodating cavity 111 for accommodating the atomized substance It communicates with the air pipe 120, and the aerosol generating device can be used normally; when the atomizer 10 is separated from the host machine 20, the force on the atomizer 10 makes the atomizing core 130 drive the air pipe 120 to move away from the suction pipe 110 relative to the atomizer shell 110. The direction of the mouth 112 moves, and then the first through hole 121 is closed, so that the atomization matrix is not easy to leak during the replacement of the atomization core 130, so that the disassembly process of the atomization core 130 is simple and does not need to be removed from the atomizer 10. The atomized matrix is emptied, which is beneficial to save the atomized matrix.

In this embodiment, the atomizer 10 further includes a base 140 and a sealing body 150, the atomizer housing 110 is disposed on the base 140, the sealing body 150 is disposed between the atomizer housing 110 and the air pipe 120, and the air pipe 120 When moving relative to the atomizer housing 110 , the sealing body 150 can block the first through hole 121 to realize the closing of the first through hole 121 . In this embodiment, the atomizing core 130 includes a heating element accommodating tube 131 and a heating element 132, the heating element accommodating tube 131 is nested in the ventilation tube 120, and the heating element 132 is arranged in the heating element accommodating tube 131, The heating element accommodating pipe 131 can isolate the heating element 132 from the air pipe 120, and can provide a contact area between the heating element 132 and the air pipe 120, that is, the outer wall of the heating element accommodating pipe 131 can be in contact with the inner side of the air pipe 120. The wall abuts against each other, so that the atomizing core 130 can be fixed in the ventilation tube 120 .

In this embodiment, the heating element accommodating tube 131 can be made of insulating material, which can avoid problems such as short circuit caused by the contact between the heating element 132 and other components.

In this embodiment, a second through hole 133 is formed on the heating element accommodating tube 131 , and the second through hole 133 communicates with the first through hole 121 , so that the accommodating cavity 111 communicates with the interior of the heating element accommodating tube 131 .

In this embodiment, the base 140 includes a protrusion 141 protruding from the sealing body 150, and the protrusion 141 is used to abut against the air pipe 120, so that when the atomizer 10 is stressed, the atomizing core 130 first drives the air pipe 120 moves relative to the atomizer housing 110 , and when the bottom of the air pipe 120 abuts against the base 140 , the atomizer 10 can be further stressed to separate from the host 20 .

In this embodiment, the atomizer 10 includes a first connection part, the host machine 20 includes a second connection part, the first connection part and the second connection part are mated and connected, and the friction force between the sealing body 150 and the air pipe 120 is less than that of the separation The minimum force required by the first connecting part and the second connecting part, so that when the atomizer 10 is under force, the atomizing core 130 can first drive the air pipe 120 to move relative to the atomizer shell 110, and the sealing body 150 will move the second After a through hole 121 is blocked, the first connection part is separated from the second connection part again, so that the atomizer 10 can be disassembled.

In this embodiment, the first connection part is the insertion groove 134 formed on the heating element accommodating tube 131, the second connection part is the insertion protrusion 221 formed on the host 20, and the insertion groove 134 is provided with a At least two first conductive rings 135 spaced apart in the first direction, at least two second conductive rings 222 spaced apart along the first direction are arranged on the insertion protrusion 221, the heating element 132 is electrically connected with the first conductive rings 135, inserted When the placement protrusion 221 is inserted into the insertion groove 134, the first conductive ring 135 and the second conductive ring 222 abut against each other for conduction, so that the electrical connection between the atomizer 10 and the host 20 can be realized. 135 and the second conductive ring 222 realize the electrical connection between the atomizer 10 and the host machine 20, and its structure is simple and easy to manufacture, and since the first conductive ring 135 and the second conductive ring 222 are in surface contact, compared with point The larger contact area makes the friction force between the first conductive ring 135 and the second conductive ring 222 larger, so that the ventilation tube 120 can move with the heating element accommodating tube 131, and the contact resistance can be reduced, thereby This enables the aerosol generating device to carry a large current and improves the reliability of the electrical connection between the atomizer 10 and the host 20 .

Wherein, at least two first conductive rings 135 and at least two second conductive rings 222 are abutted in one-to-one correspondence.

In this embodiment, both the first conductive ring 135 and the second conductive ring 222 can be metal rings, such as iron rings, copper rings and the like.

In this embodiment, when the insertion protrusion 221 is inserted into the insertion groove 134, at least two first conductive rings 135 and at least two second conductive rings 222 are respectively nested, so that the first conductive rings 135 The inner wall at least partly abuts against the outer wall of the second conductive ring 222, which can further make a curved surface contact between the first conductive ring 135 and the second conductive ring 222, and the contact area is larger, further making the first conductive ring 135 and the second conductive ring 135 and the second conductive ring 222 contact. The friction between the rings 222 is greater, and can further reduce the contact resistance, improving the reliability of the electrical connection between the atomizer 10 and the host 20 .

In other embodiments, it may also be that the bottom or top surface of the first conductive ring 135 abuts against the top or bottom surface of the second conductive ring 222 , which is not limited here.

In this embodiment, when the insertion protrusion 221 is inserted into the insertion groove 134, the contact area between the first conductive ring 135 and the second conductive ring 222 is the inner wall area of the first conductive ring 135, and the first conductive ring 135 The contact area with the second conductive ring 222 is larger, and the reliability of the electrical connection between the atomizer 10 and the host 20 is better.

In other embodiments, the contact area between the first conductive ring 135 and the second conductive ring 222 may also be less than 100% of the inner wall area of the first conductive ring 135, such as 50%, 70% or 90%, etc. Do limit.

In this embodiment, the first conductive ring 135 may be provided with a connection protrusion 136, the connection protrusion 136 is formed with a connection hole 137, the connection hole 137 is used to connect with the first wire 138, and then through the first wire 138 and the heating 132 is electrically connected.

In this embodiment, the first conductive ring 135 and the second conductive ring 222 can be configured as an interference fit, which can make the connection between the first conductive ring 135 and the second conductive ring 222 tighter, and then make the first conductive ring 135 and the second conductive ring 222 more tightly connected. The electrical connection effect of the second conductive ring 222 is better.

In other embodiments, the first connecting part may also be an insertion protrusion provided on the heating element accommodating tube 131, and the second connecting part may also be an insertion groove correspondingly provided on the host 20, which is not described here. limit.

In other embodiments, the insertion slot 134 may also be formed on the base 140 , which is not limited here.

In this embodiment, the first conductive ring 135 can also be formed with an opening 139, that is, the first conductive ring 135 is a discontinuous, incomplete and continuous ring, and the inner diameter of the first conductive ring 135 can be smaller than the insertion protrusion 221 so that when the insertion protrusion 221 is inserted into the first conductive ring 135, the first conductive ring 135 can be deformed by force, so that the first conductive ring 135 and the second conductive ring 222 are in contact with each other. Closer, higher reliability of electrical connection.

In other embodiments, the first conductive ring 135 can also be a polygonal ring such as a rectangular ring with an opening, a triangular ring, or an oval ring or other curved edge rings, or the first conductive ring 135 can also be a complete continuous, An uninterrupted circular ring, polygonal ring or other curved rings can make the electrical connection between the first conductive ring 135 and the second conductive ring 222 more reliable.

In this embodiment, one first conductive ring 135 is only connected to the positive pole or the negative pole of the heating element 132, which can make the electrical connection more reliable.

In other embodiments, a first conductive ring 135 may include a plurality of conductive segments (not shown in the figure). The plurality of conductive segments may be respectively connected to at least two of the positive and negative electrodes of the heating element 132 and the positive and negative electrodes of other devices. A plurality of conductive segments are arranged at intervals or separated by insulators, which can make the structure of the atomizer 10 simpler and more compact, and occupy less space.

In this embodiment, the atomizer 10 may further include a first sealing ring 161 and/or a second sealing ring 162, and the first sealing ring 161 and the second sealing ring 162 are respectively arranged on the ventilation pipe 120 and the heating element accommodating pipe. 131, and the first sealing ring 161 and the second sealing ring 162 are respectively located at both ends of the second through hole 133, which can further reduce the leakage of the atomized substance.

In this embodiment, the atomizer 10 may further include a third sealing ring 163 disposed between the vent pipe 120 and the atomizer casing 110 and a first sealing ring 163 disposed between the bottom of the vent pipe 120 and the heating element accommodating pipe 131 Four sealing rings 164, by setting the third sealing ring 163 and the fourth sealing ring 164, the sealing performance of the atomizer 10 can be further enhanced, and the leakage of the atomized substance can be reduced.

Referring to Figures 1 to 6, the embodiment of the aerosol generating device of the present application includes an atomizer 10 and a host 20, the atomizer 10 is electrically connected to the host 20, and the host 20 is used to supply power to the atomizer 10, so that the atomizing core 130 is capable of heating the atomized substrate to generate an aerosol. Wherein, the structure of the atomizer 10 refers to the above embodiment of the atomizer 10 , and will not be repeated here.

In this embodiment, the host 20 includes a host housing 210, a bracket 220 disposed on the host housing 210, a battery 230 disposed in the host housing 210, and a controller 240, the controller 240 is electrically connected to the battery 230, and the controller 240 can pass The second conductive ring 222 is connected to the heating element 132 to control the battery 230 to supply power to the heating element 132 .

In this embodiment, the controller 240 may be a PCBA (Printed Circuit Board Assembly, assembled printed circuit board) or the like.

In this embodiment, the second connecting portion may be disposed on the bracket 220 .

In this embodiment, the bracket 220 can also be formed with a first air channel 223 extending along a first direction and a second air channel 224 extending along a third direction perpendicular to the first direction, the first air channel 223 can communicate with the The air pipe 120 communicates, and the second air channel 224 communicates with the first air channel 223 and the outside world, so that the air can enter the bracket 220 from the side of the host 20, and enter the atomizer 10 from the middle of the bracket 220, forming a closed air The air flow is not easy to disperse, which is conducive to the concentration of air in the nebulizer 10, the user's suction effect is better, and it can prevent the residue generated in the process of generating aerosol from flowing into the host 20 from the middle, which can play a role Protective effect on the host computer 20.

In this embodiment, at least two conductive elements 225 may be provided on the side of the bracket 220 away from the insertion protrusion 221, and the at least two conductive elements 225 are respectively electrically connected to at least two second conductive rings 222, and the conductive elements 225 are used for It is used to connect with the second wire 241 to realize the electrical connection between the second conductive ring 222 and the control board 240 in the host machine 20, and then realize the connection between the atomizer 10 and the host machine 20 through the first conductive ring 135 and the second conductive ring 222. electrical connection.

In this embodiment, the conductive member 225 may be a metal arc-shaped sheet, such as an iron sheet, a copper sheet, and the like.

In this embodiment, the number of the first conductive ring 135 and the number of the second conductive ring 222 can be three respectively, wherein the two first conductive rings 135 are electrically connected to the positive pole and the negative pole of the heating element 132 respectively, and the other first conductive ring 135 The ring 135 can be electrically connected with an additional functional device (not shown in the figure) to realize additional functions, so that the aerosol generating device has more comprehensive functions.

For example, the additional function device can be an identification piece, one of the positive pole and the negative pole of the identification piece reuses one of the two first conductive rings 135 electrically connected to the positive pole and the negative pole of the heating element 132, the positive pole and the negative pole of the identification piece The other of the negative poles is electrically connected to the third first conductive ring 135, and the identification part is set to realize the recognition of the atomizer 10 by the host 20, and an alarm is given when the atomizer 10 does not match, so that the aerosol generating device is more efficient. intelligent. Among them, the identification part can be identified by the difference in electrical parameters such as resistance value, inductance value, capacitance value, digital signal or analog signal, for example, the identification part can be a thermistor, and the host 20 can identify the atomizer according to the resistance value of the identification part 10. For another example, the identification part can be an identification chip, and the host 20 can identify the atomizer 10 according to the digital signal detected by the identification chip.

Specifically, various types of heating methods can be pre-stored in the host 20 to correspond to various types of atomizers 10. When the host 20 recognizes that the atomizer 10 is one of the pre-stored multiple types through the identification piece, then The heating element 132 is controlled to heat according to the heating temperature control curve in the corresponding heating mode.

For another example, the additional function device can also be a temperature detector, which is set close to the heating element 132, so that the controller 240 can intelligently adjust the power of the heating element 132 according to the detected temperature, making the aerosol generating device more intelligent.

Wherein, the temperature detector can be a temperature sensor, which can directly sense the temperature near the heating element 320 . Or, the warm detector can also be a temperature measuring circuit arranged on the heating element 320, and the temperature measuring circuit can adopt a material similar to a thermistor. When the temperature changes, the resistance value on the temperature measuring circuit changes, and the host computer 20 can Judgment and control are performed according to the change of resistance value.

For another example, the additional functional device can also be a heating element, and the heating element and the heating element 132 are arranged in the same airway, and the connection method of the heating element is similar to that of the identification element, which will not be repeated here. By arranging the heating element, the heating effect can be enhanced, and the atomization speed of the atomized substrate can be increased. And the power of the heating element and the power of the heating element 132 can be different, and the host 20 can supply power to any one of the heating element 132 and the heating element separately according to needs, or supply power to the heating element 132 and the heating element at the same time to provide different heating strength.

In other embodiments, four first conductive rings 135 may also be provided, wherein two first conductive rings 135 are electrically connected to the positive pole and negative pole of the heating element 132 respectively, and the other two first conductive rings 135 are respectively connected to the additional functional device electrical connection. Or it may also be that the number of additional functional devices is multiple, and the number of the first conductive ring 135 is more than three, such as including two or three of identification parts, temperature detectors or heating elements, and the number of multiple additional functional devices One end is multiplexed with one of the two first conductive rings 135 electrically connected to the positive pole and the negative pole of the heating element 132, and the other end is electrically connected to the other first conductive ring 135, or a plurality of additional functional devices are respectively electrically connected to the heating element 132 positive pole, two first conductive rings outside the two first conductive rings 135 of the negative pole are connected. The above is only the implementation of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process conversion made by using the specification and drawings of the application, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of this application in the same way.

Claims (20)

A nebulizer, comprising: The shell of the nebulizer forms an accommodating cavity and a nozzle opening; A ventilation tube is at least partly set through the atomizer housing and communicates with the mouth of the suction nozzle, and a first through hole is formed on the ventilation tube, and the first through hole is used to connect the accommodating cavity with the mouth of the suction nozzle. internal communication of the vent pipe; The atomizing core is arranged in the ventilation pipe; Wherein, when the atomizer is assembled with the main engine, the main engine can act on the atomizing core, so that the atomizing core can drive the air pipe relative to the shell of the atomizer toward the mouth of the suction nozzle. direction, thereby opening the first through hole; when the atomizer is disassembled from the host, the atomizer is stressed so that the atomizing core drives the air pipe relative to the atomizer The housing moves away from the mouth of the suction nozzle, thereby closing the first through hole. The atomizer according to claim 1, wherein the atomizer further comprises a base and a sealing body, the housing of the atomizer is arranged on the base, and the sealing body is arranged on the housing of the atomizer Between the air pipe and the air pipe, when the air pipe moves relative to the atomizer shell, the sealing body can block the first through hole. The atomizer according to claim 2, wherein the atomizer includes a first connection part, the host includes a second connection part, and the first connection part is mated with the second connection part, so The frictional force between the sealing body and the vent tube is smaller than the minimum force required to separate the first connection part from the second connection part. The atomizer according to claim 3, wherein the first connection part is an insertion groove, the second connection part is an insertion protrusion, and the insertion groove is provided with at least two first conductive rings at intervals, the insertion protrusion is provided with at least two second conductive rings spaced along the first direction, the atomizing core and the first conductive ring or the The second conductive ring is electrically connected, and when the insertion protrusion is inserted into the insertion groove, the first conductive ring and the second conductive ring abut against each other for conduction. The atomizer according to claim 3, wherein the first connection part is an insertion protrusion, the second connection part is an insertion groove, and the insertion groove is provided with a at least two first conductive rings at intervals, the insertion protrusion is provided with at least two second conductive rings spaced along the first direction, the atomizing core and the first conductive ring or the The second conductive ring is electrically connected, and when the insertion protrusion is inserted into the insertion groove, the first conductive ring and the second conductive ring abut against each other for conduction. The atomizer according to claim 4, wherein when the insertion protrusion is inserted into the insertion groove, at least two of the first conductive rings and at least two of the second conductive rings are respectively The nesting arrangement makes the inner wall of the first conductive ring at least partly abut against the outer wall of the second conductive ring. The atomizer according to claim 4, wherein the first conductive ring and the second conductive ring are arranged in an interference fit. The atomizer according to claim 1, wherein the atomizing core includes a heating element accommodating tube and a heating element, the heating element accommodating tube is nested in the ventilation tube, and the heating element is disposed on In the heating element accommodating tube, a second through hole is formed on the heating element accommodating tube, and the second through hole communicates with the first through hole. The atomizer according to claim 8, wherein the atomizer comprises a first sealing ring and/or a second sealing ring, the first sealing ring and the second sealing ring are respectively arranged on the Between the air pipe and the heating element accommodating pipe, and the first sealing ring and the second sealing ring are respectively located at two ends of the second through hole. The atomizer according to claim 2, wherein the base includes a protrusion protruding from the sealing body, and the protrusion is used to abut against the air pipe. An aerosol generating device, including an atomizer and a host, the atomizer is electrically connected to the host, and the host is used to supply power to the atomizer; The atomizer includes: The shell of the nebulizer forms an accommodating cavity and a nozzle opening; A ventilation tube is at least partly set through the atomizer housing and communicates with the mouth of the suction nozzle, and a first through hole is formed on the ventilation tube, and the first through hole is used to connect the accommodating cavity with the mouth of the suction nozzle. internal communication of the vent pipe; The atomizing core is arranged in the ventilation pipe; Wherein, when the atomizer is assembled with the main engine, the main engine can act on the atomizing core, so that the atomizing core can drive the air pipe relative to the shell of the atomizer toward the mouth of the suction nozzle. direction, thereby opening the first through hole; when the atomizer is disassembled from the host, the atomizer is stressed so that the atomizing core drives the air pipe relative to the atomizer The housing moves away from the mouth of the suction nozzle, thereby closing the first through hole. The aerosol generating device according to claim 11, wherein the atomizer further comprises a base and a sealing body, the shell of the atomizer is arranged on the base, and the sealing body is arranged on the atomizer Between the shell and the vent tube, when the vent tube moves relative to the atomizer shell, the sealing body can block the first through hole. The aerosol generating device according to claim 12, wherein the atomizer includes a first connecting part, the host includes a second connecting part, and the first connecting part is mated with the second connecting part, The frictional force between the sealing body and the vent tube is less than the minimum force required to separate the first connection part from the second connection part. The aerosol generating device according to claim 13, wherein one of the first connecting part and the second connecting part is an insertion slot, and one of the first connecting part and the second connecting part The other is an insertion protrusion, the insertion groove is provided with at least two first conductive rings spaced along the first direction, and the insertion protrusion is provided with at least two conductive rings spaced along the first direction. At least two second conductive rings, the atomizing core is electrically connected to the first conductive ring or the second conductive ring, when the insertion protrusion is inserted into the insertion groove, the first A conductive ring abuts against the second conductive ring for conduction. The aerosol generating device according to claim 14, wherein when the insertion protrusion is inserted into the insertion groove, at least two of the first conductive rings and at least two of the second conductive rings are respectively The nesting arrangement makes the inner wall of the first conductive ring at least partly abut against the outer wall of the second conductive ring. The aerosol generating device according to claim 14, wherein the first conductive ring and the second conductive ring are arranged in an interference fit. The aerosol generating device according to claim 11, wherein the atomizing core includes a heating element accommodating tube and a heating element, the heating element accommodating tube is nested in the ventilation tube, and the heating element is arranged In the heating element accommodating tube, a second through hole is formed on the heating element accommodating tube, and the second through hole communicates with the first through hole. The aerosol generating device according to claim 17, wherein the atomizer comprises a first sealing ring and/or a second sealing ring, and the first sealing ring and the second sealing ring are respectively arranged on the Between the ventilation pipe and the heating element accommodating pipe, and the first sealing ring and the second sealing ring are respectively located at two ends of the second through hole. The aerosol generating device according to claim 12, wherein the base includes a protrusion protruding from the sealing body, and the protrusion is used to abut against the ventilation tube. The aerosol generating device according to claim 14, wherein the host includes a host casing, a bracket provided on the host casing, a battery and a controller arranged in the host casing, the insertion slot or the The insertion protrusion is formed on the bracket, the controller is electrically connected to the battery, the controller is electrically connected to the first conductive ring or the second conductive ring, and the bracket is also formed with A first airway extending along the first direction and a second airway extending along a third direction perpendicular to the first direction, the first airway can communicate with the ventilation tube, the second The airway communicates with the first airway and the outside world respectively.