ATOMIZATION ASSEMBLY AND AEROSOL GENERATING DEVICE

RELATED APPLICATION

[0001]This application is a continuation application of International application No. PCT/CN2024/101620, filed on June 26, 2024, which claims priority to Chinese Patent Application No. 202322426217.6, filed on September 6, 2023. The entire disclosure of the prior application is hereby incorporated by reference.

TECHNICAL FIELD

[0002]The present application relates to the field of atomization technologies, including to an atomization assembly and an aerosol generating device.

BACKGROUND

[0003]The statement herein merely provides background information related to the present disclosure and does not necessarily constitute the prior art. In the field of e-cigarettes, high-viscosity e-liquid is favored by many consumers due to outstanding advantages in terms of taste. However, owing to high-viscosity characteristic, the high-viscosity e-liquid has low fluidity, which results in poor ventilation of e-liquid in an e-liquid tank. In particular, as the e-liquid in the e-liquid tank gradually decreases, the negative pressure inside the e-liquid tank increases, leading to sluggish e-liquid flow in the e-liquid tank and slow e-liquid supply. Given that the viscosity of the high-viscosity e-liquid decreases as the temperature rises, the industry commonly adopts a method of increasing power additionally to preheat e-liquid, thereby improving the fluidity of the e-liquid and alleviating the poor ventilation of the e-liquid. However, this solution will cause additional battery energy consumption. In addition, a vent channel of the vast majority of cartridges on the market is in communication with an atomization cavity. Under the impact of the inhalation resistance of airflow during the inhalation process, e-liquid will be drawn from the atomization cavity to the vent channel, thus causing blockage of the vent channel.

SUMMARY

[0004]An objective of aspects of the present disclosure is to provide an atomization assembly and an aerosol generating device, so as to resolve the technical problems in the existing technology that a method of increasing power additionally to improve the difficulty in e-liquid ventilation causes additional battery energy consumption, and that e-liquid is drawn from an atomization cavity to a vent channel during the inhalation process, resulting in blockage of the vent channel.

[0005]Examples of the present disclosure adopt the following technical solutions:

[0006]According to a first aspect, an atomization assembly is provided, including a housing assembly and a heating element. The housing assembly is formed with an e-liquid tank and an atomization tank spaced apart from each other. The heating element is disposed in the housing assembly and is in communication with the e-liquid tank and the atomization tank. The heating element includes an atomization surface in communication with the atomization tank. The housing assembly is further formed with an air inlet channel and a vent channel. The air inlet channel is in communication with the atomization tank. The vent channel is in communication with the e-liquid tank. The atomization tank is isolated from the vent channel. The housing assembly includes an air channel wall forming the vent channel. The air channel wall is at least partially located in the atomization tank.

[0007]In an aspect, the vent channel is located at the side of the atomization tank. Heat of the atomization tank can be conducted to the vent channel.

[0008]In an aspect, the heating element is longitudinally disposed between the atomization tank and the e-liquid tank. The heating element has an e-liquid inlet surface facing the e-liquid tank and an atomization surface facing the atomization tank.

[0009]In an aspect, the air channel wall is disposed transversely toward the atomization surface of the heating element.

[0010]Alternatively, the air channel wall is disposed transversely obliquely toward the atomization surface of the heating element.

[0011]In an aspect, an air inlet end of the vent channel is in communication with the external atmosphere.

[0012]Alternatively, the air inlet end of the vent channel is in communication with the external atmosphere through a connection channel in the housing assembly. The connection channel is isolated from the atomization tank.

[0013]In an aspect, the air inlet channel includes a first channel and a second channel. The first channel is in communication with the atomization tank, and the second channel is in communication with the vent channel.

[0014]In an aspect, the housing assembly includes a mounting base, a cartridge tube, and an e-liquid tube. The cartridge tube is mounted on the mounting base. The e-liquid tube is sleeved outside the cartridge tube and the mounting base. The mounting base and the cartridge tube jointly surround the atomization tank. The cartridge tube and the e-liquid tube jointly surround the e-liquid tank.

[0015]The vent channel is formed in the outer side wall of the cartridge tube and is in communication with the e-liquid tank. An air inlet in communication with the external atmosphere is formed in the e-liquid tube. The air inlet is in communication with the air inlet end of the vent channel.

[0016]In an aspect, the housing assembly includes a mounting base, a cartridge tube, and an e-liquid tube. The cartridge tube is mounted on the mounting base. The e-liquid tube is sleeved outside the cartridge tube and the mounting base. The mounting base and the cartridge tube jointly surround the atomization tank. The cartridge tube and the e-liquid tube jointly surround the e-liquid tank.

[0017]A first accommodating cavity is formed in the outer side wall of the cartridge tube. A second accommodating cavity is formed in the outer side wall of the mounting base. Two ends of the first accommodating cavity are in communication with the e-liquid tank and the second accommodating cavity respectively. The side of the second accommodating cavity facing away from the first accommodating cavity is in communication with the external atmosphere.

[0018]The vent channel is jointly formed by the first accommodating cavity and the second accommodating cavity.

[0019]In an aspect, an air inlet in communication with the external atmosphere is formed in the e-liquid tube or the mounting base. The air inlet is in communication with the side of the second accommodating cavity facing away from the first accommodating cavity.

[0020]In an aspect, the first accommodating cavity extends in an axial direction, and the second accommodating cavity extends in a peripheral direction and is disposed around the atomization tank. The size of the first accommodating cavity in the peripheral direction is smaller than the size of the second accommodating cavity in the peripheral direction.

[0021]In an aspect, an e-liquid storage cavity is disposed on the inner bottom wall of the second accommodating cavity. E-liquid in the first accommodating cavity is capable of flowing into the e-liquid storage cavity. The axial height of the e-liquid storage cavity is less than the axial height of the second accommodating cavity.

[0022]In an aspect, a first seal rib and a second seal rib are disposed on the inner bottom wall of the second accommodating cavity. The first seal rib and the second seal rib are located on two sides of the first accommodating cavity in the peripheral direction respectively, and both extend in the axial direction. The size of the first seal rib and the size of the second seal rib in the axial direction are smaller than the size of the second accommodating cavity in the axial direction. The e-liquid storage cavity is jointly surrounded by the first seal rib, the second seal rib, the e-liquid tube, and the mounting base.

[0023]In an aspect, the cartridge tube includes an atomization section and a smoke guide section in communication with each other. The atomization section is connected to the smoke guide section through a connection section. The mounting base has a support plate disposed opposite to the connection section and a surrounding plate formed on the peripheral edge of the support plate. The end surface of the atomization section abuts against the end surface of the surrounding plate. The e-liquid tube is sleeved outside the atomization section, the smoke guide section, and the surrounding plate. The first accommodating cavity is formed in the outer side wall of the atomization section and is open toward the inner side wall of the e-liquid tube. The second accommodating cavity is formed in the outer side wall of the surrounding plate and is open toward the inner side wall of the e-liquid tube.

[0024]In an aspect, the atomization assembly further includes a connection electrode. An electrode block extends from a surrounding plate of the mounting base. The connection electrode and the electrode block are electrically connected to two connection portions on the heating element respectively, and the mounting base and the connection electrode are electrically connected to a battery assembly respectively.

[0025]According to a second aspect, the present disclosure further provides an aerosol generating device, including a battery assembly, a suction nozzle, and the foregoing atomization assembly. The suction nozzle is disposed in communication with the atomization assembly. The battery assembly is electrically connected to the atomization assembly.

Beneficial Effects

[0026]The atomization assembly and the aerosol generating device according to aspects of the present disclosure have the following beneficial effects. After the heating element starts to work and some of the e-liquid in the e-liquid tank is consumed, the negative pressure of the e-liquid tank increases, and air in the vent channel enters the e-liquid tank to maintain the internal and external air pressure balance. Based on this, in the first aspect, due to the impact of the viscosity of the e-liquid, air entering the e-liquid tank will not rise immediately to the empty space of the e-liquid tank but will rise slowly, thereby exerting a pressurizing effect on the e-liquid to squeeze the e-liquid as much as possible toward the e-liquid inlet end of the heating element. Thus, the fluidity of the e-liquid in the e-liquid tank is increased, the e-liquid supply speed of the e-liquid in the e-liquid tank is increased, and smooth ventilation can be ensured. In the second aspect, since the vent channel is isolated from the atomization tank, the e-liquid will not be drawn from the atomization tank to the vent channel due to the inhalation resistance of the airflow during inhalation by a smoker, thereby preventing blockage of the vent channel caused by the inhalation resistance of the airflow. Also, the atomization surface of the heating element is disposed in communication with the atomization tank, so that the atomization surface can generate a high-temperature aerosol, thereby causing a high temperature in the atomization tank. Also, the air channel wall of the vent channel is at least partially located in the atomization tank, so that the temperature in the atomization tank may be transferred, through the air channel wall, to a high-viscosity e-liquid in the vent channel and near the vent channel, thereby further improving the fluidity of the e-liquid, and enabling the smooth ventilation of the e-liquid. No additional power needs to be supplied, which reduces energy consumption and costs. Also, there is no need to add a circuit structure, thus simplifying the structure of the atomization assembly, reducing the volume of the atomization assembly, and making it easy to carry.

BRIEF DESCRIPTION OF THE DRAWINGS

[0027]To more clearly explain the technical solutions in aspects of the present disclosure, the accompanying drawings that need to be used in the description of the aspects or exemplary technologies will be briefly introduced below. It is apparent that the accompanying drawings in the following description are only some aspects of the present disclosure. For those of ordinary skill in the art, other accompanying drawings may be obtained from these accompanying drawings without making creative labor.

[0028]FIG. 1 is a schematic three-dimensional view of an aerosol generating device according an aspect of the present disclosure;

[0029]FIG. 2 is a schematic exploded view of an aerosol generating device according an aspect of the present disclosure;

[0030]FIG. 3 is a schematic exploded view of a suction nozzle and an atomization assembly of an aerosol generating device according an aspect of the present disclosure;

[0031]FIG. 4 is a schematic lateral view of a suction nozzle and an atomization assembly of an aerosol generating device according an aspect of the present disclosure;

[0032]FIG. 5 is a schematic cross-sectional view of the suction nozzle and the atomization assembly of the aerosol generating device in FIG. 4, taken along line A-A;

[0033]FIG. 6 is a schematic enlarged view of part B in FIG. 5;

[0034]FIG. 7 is a schematic structure view of a mounting base of an atomization assembly according to Example 1 of the present disclosure;

[0035]FIG. 8 is a schematic partial structure view of an atomization assembly according to Example 2 of the present disclosure;

[0036]FIG. 9 is a schematic structure view of a mounting base of an atomization assembly according to Example 2 of the present disclosure; and

[0037]FIG. 10 is a schematic structure view of a cartridge tube of an atomization assembly according to an aspect of the present disclosure.

Reference numerals in the drawings:

[0038]1000: atomization assembly; 100: housing assembly; 110: mounting base; 111: second accommodating cavity; 112: support plate; 113: surrounding plate; 114: extension plate; 115: electrode block; 116: air inlet; 120: cartridge tube; 121: first accommodating cavity; 122: atomization section; 123: smoke guide section; 124: connection section; 130: e-liquid tube; 140: e-liquid tank; 150: atomization tank; 160: vent channel; 161: air inlet end; 170: e-liquid storage cavity; 180: first seal rib; 190: second seal rib; 200: heating element; 201: e-liquid inlet surface; 202: atomization surface; 203: connection portion; 300: seal member; 400: connection electrode; 500: electrode holder; 2000: battery assembly; 3000: suction nozzle; 4000: seal sleeve; 101: air inlet channel; and 102: air channel wall.

DETAILED DESCRIPTION

[0039]To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the present disclosure in detail with reference to the accompanying drawings and the aspects. It should be understood that specific aspects described herein are only for explaining the present invention and are not intended to limit the present disclosure.

[0040]It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, the component may be directly on the other component or indirectly disposed on the other component. When a component is referred to as being "connected to" another component, the component may be directly connected or indirectly connected to the other component. The orientation or positional relationships indicated by the terms such as "upper", "lower", "left", and "right" are based on the orientation or positional relationships shown in the accompanying drawings, which are merely for ease of description, and do not indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation. Therefore, the terms shall not be construed as a limitation to the present disclosure. For those of ordinary skill in the art, the specific meanings of the foregoing terms may be understood according to specific circumstances. The terms such as "first" and "second" are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance or implicitly specifying the quantity of technical features. "Plurality of" means two or more, unless otherwise definitely and specifically limited.

[0041]To illustrate the technical solutions provided in the present disclosure, detailed descriptions are provided below in conjunction with specific drawings and aspects.

[0042]Referring to FIG. 1 and FIG. 2, examples of the present disclosure provide an aerosol generating device, including a battery assembly 2000, an atomization assembly 1000, and a suction nozzle 3000. The battery assembly 2000 is electrically connected to the atomization assembly 1000. The battery assembly 2000 is configured to supply power to the atomization assembly 1000, so that the atomization assembly 1000 starts to atomize. The atomization assembly 1000 is configured to atomize e-liquid into aerosol particles. The suction nozzle 3000 is in communication with the atomization assembly 1000 and is configured to deliver the aerosol particles generated by the atomization assembly 1000 to the oral cavity of a smoker.

[0043]Referring to FIG. 3 to FIG. 5, in an example, an atomization assembly 1000 includes a housing assembly 100 and a heating element 200. The housing assembly 100 is formed with an e-liquid tank 140 and an atomization tank 150 spaced apart from each other. The heating element 200 is disposed in the housing assembly 100 and is in communication with the e-liquid tank 140 and the atomization tank 150. The heating element 200 includes an atomization surface 202 in communication with the atomization tank 150. The housing assembly 100 is further formed with an air inlet channel 101 and a vent channel 160. The air inlet channel 101 is in communication with the atomization tank 150. The vent channel 160 is in communication with the e-liquid tank 140. The atomization tank 150 is isolated from the vent channel 160. The housing assembly 100 includes an air channel wall 102 forming the vent channel 160. The air channel wall 102 is at least partially located in the atomization tank 150.

[0044]That the heating element 200 is in communication with the e-liquid tank 140 and the atomization tank 150 may be that the heating element 200 is disposed, at the position connected to the atomization tank 150, in the e-liquid tank 140. Alternatively, the heating element 200 is disposed between the atomization tank 150 and the e-liquid tank 140. Alternatively, the heating element 200 is disposed, at the position connected to the e-liquid tank 140, in the atomization tank 150.

[0045]In the atomization assembly 1000 according to the present disclosure, after the heating element 200 starts to work and some of the e-liquid in the e-liquid tank 140 is consumed, the negative pressure of the e-liquid tank 140 increases, and air in the vent channel 160 enters the e-liquid tank 140 to maintain the internal and external air pressure balance. Based on this, in the first aspect, due to the impact of the viscosity of the e-liquid, air entering the e-liquid tank 140 will not rise immediately to the empty space of the e-liquid tank 140 but will rise slowly, thereby exerting a pressurizing effect on the e-liquid to squeeze the e-liquid as much as possible toward the e-liquid inlet end of the heating element 200. Thus, the fluidity of the e-liquid in the e-liquid tank 140 is increased, the e-liquid supply speed of the e-liquid in the e-liquid tank 140 is increased, and smooth ventilation can be ensured. In the second aspect, since the vent channel 160 is isolated from the atomization tank 150, the e-liquid will not be drawn from the atomization tank 150 to the vent channel 160 due to the inhalation resistance of the airflow during inhalation by a smoker, thereby preventing blockage of the vent channel 160 caused by the inhalation resistance of the airflow. Also, the atomization surface 202 of the heating element 200 is disposed in communication with the atomization tank 150, so that the atomization surface 202 can generate a high-temperature aerosol, thereby causing a high temperature in the atomization tank 150. Also, the air channel wall 102 of the vent channel 160 is at least partially located in the atomization tank 150, so that the temperature in the atomization tank 150 may be transferred, through the air channel wall 102, to a high-viscosity e-liquid in the vent channel 160 and near the vent channel 160, thereby further improving the fluidity of the e-liquid, and enabling the smooth ventilation of the e-liquid. No additional power needs to be supplied, which reduces energy consumption and costs. Also, there is no need to add a circuit structure, thus simplifying the structure of the atomization assembly 1000, reducing the volume of the atomization assembly 1000, and making it easy to carry.

[0046]A reverse filling process usually cannot be used due to the e-liquid characteristic of the high-viscosity e-liquid (the viscosity changes as the temperature changes; a higher temperature indicates a lower viscosity; a lower temperature indicates a higher viscosity), and the problem of e-liquid injection and liquid squeezing occurs when the upright filling process is used. The vent channel 160 is in communication with the e-liquid tank 140. During the liquid injection of the e-liquid tank 140, some of the e-liquid may be squeezed into the vent channel 160 under the air pressure, causing the vent channel 160 to be blocked.

[0047]In an aspect, as shown in FIG. 6, the vent channel 160 is located at the side of the atomization tank 150. Heat of the atomization tank 150 can be conducted to the vent channel 160. After being introduced into the atomization tank 150, aerosol particles atomized by the heating element 200 also carry some heat, and the vent channel 160 is located at the side of the atomization tank 150, so that the heat of the atomization tank 150 can be conducted to the vent channel 160, and e-liquid entering the vent channel 160 due to e-liquid injection and liquid squeezing in the vent channel 160 may be heated, so that the e-liquid squeezing into the vent channel 160 due to e-liquid injection and liquid squeezing has fluidity, thereby enabling smooth ventilation of the e-liquid.

[0048]In an aspect, as shown in FIG. 6, the heating element 200 is longitudinally disposed between the atomization tank 150 and the e-liquid tank 140. The heating element 200 has an e-liquid inlet surface 201 facing the e-liquid tank 140 and an atomization surface 202 facing the atomization tank 150.

[0049]The longitudinal direction herein refers to a direction extending approximately in an axial direction of the entire atomization assembly 1000. The transverse direction herein refers to a direction perpendicular to the longitudinal direction. For example, when the housing assembly 100 is disposed vertically, the transverse direction refers to a horizontal direction.

[0050]For example, the heating element 200 is disposed in a direction parallel to the axial direction of the atomization assembly 1000, or the heating element 200 is disposed at an oblique angle with the axial direction of the atomization assembly 1000. Generally, the extension tendency of the heating element 200 is the same as the axial direction of the atomization assembly 1000. To be specific, the heating element 200 is mounted on the side surface of the atomization tank 150. The e-liquid inlet surface 201 and the atomization surface 202 of the heating element 200 are disposed approximately parallel to a direction of airflow in the atomization tank 150. In fact, during design, a small thickness between the e-liquid inlet surface 201 and the atomization surface 202 of the block-shaped heating element 200 is generally designed, and a large area of the e-liquid inlet surface 201 of the heating element 200 is designed. Therefore, in the present disclosure, by mounting the heating element 200 on the side surface of the atomization tank 150, the transverse occupied space of the heating element 200 can be reduced. It may be understood that in other aspects of the present disclosure, the heating element 200 may alternatively be disposed transversely in the atomization tank 150 when the structural volume of the atomization assembly 1000 is permits. This is not intended as an exclusive limitation herein.

[0051]It should be noted herein that the axial direction in the present disclosure refers to an axial direction of the housing assembly 100. When the housing assembly 100 is approximately cylindrical, the axial direction of the housing assembly 100 refers to a central axial direction of the housing assembly 100. When the housing assembly 100 is irregularly formed, the axial direction of the housing assembly 100 refers to a length extension direction of the housing assembly 100.

[0052]Also, since the vent channel 160 is located at the side of the atomization tank 150, and the heating element 200 is mounted on the side surface of the atomization tank 150, aerosol particles atomized by the heating element 200 will impinge on the wall surface of the atomization tank 150 opposite to the heating element 200, so that the temperature of the wall surface of the atomization tank 150 opposite to the heating element 200 is higher, and more heat can be transferred to the vent channel 160 through the wall surface of the atomization tank 150. Specifically, referring to FIG. 6, the air channel wall 102 is disposed transversely toward the atomization surface 202 of the heating element 200, so that the aerosol particles atomized by the heating element 200 will impinge on the air channel wall 102 of the vent channel 160 opposite to the heating element 200, so as to rapidly heat airflow in the vent channel 160. It may be understood that in other aspects, the air channel wall 102 may alternatively be disposed transversely obliquely toward the atomization surface 202 of the heating element 200.

[0053]In this disclosure, an air inlet end 161 of the vent channel 160 may be in communication with the external atmosphere. The vent channel 160 may alternatively be in communication with another connection channel in the housing assembly 100, provided that the vent channel 160 is isolated from the atomization tank 150. To be specific, the connection channel is isolated from the atomization tank 150. Those skilled in the art may perform selection and setting according to an actual requirement.

[0054]In an aspect, the air inlet channel 101 includes a first channel (not shown in the figure) and a second channel (not shown in the figure). The first channel is in communication with the atomization tank 150, and the second channel is in communication with the vent channel 160, to isolate the atomization tank 150 from the vent channel 160. Specifically, when a smoker inhales through the suction nozzle 3000, external air enters the atomization tank 150 through the first channel. Under the impact of the airflow, e-liquid in the e-liquid tank 140 enters the heating element 200. Aerosol particles heated and atomized by the heating element 200 are introduced into the atomization tank 150, enter the suction nozzle 3000 from the atomization tank 150 under the impact of the airflow, and enter the oral cavity of the smoker through the suction nozzle 3000. After the heating element 200 starts to work and some of the e-liquid in the e-liquid tank 140 is consumed, the negative pressure of the e-liquid tank 140 increases. To keep the internal and external air pressure balance, air in the second channel enters the e-liquid tank 140 through the vent channel 160, thereby increasing the fluidity of the e-liquid in the e-liquid tank 140, and ensuring smooth ventilation.

[0055]In an aspect, referring to FIG. 6, the air inlet end 161 of the vent channel 160 is in communication with the external atmosphere. A black arrow in the figure represents a flow direction of fluid. A middle arrow flowing from bottom to top represents air flow in an airflow channel of the atomization assembly 1000. A left arrow represents that the e-liquid in the e-liquid tank 140 flows downward and rightward to the heating element 200. A right arrow represents that the external atmosphere flows to the e-liquid tank 140 from bottom to top through the vent channel 160. Specifically, when a smoker inhales through the suction nozzle 3000, external air enters the atomization tank 150 from bottom to top. Under the impact of the airflow, e-liquid in the e-liquid tank 140 enters the heating element 200. Aerosol particles heated and atomized by the heating element 200 are introduced into the atomization tank 150, enter the suction nozzle 3000 from the atomization tank 150 under the impact of the airflow, and enter the oral cavity of the smoker through the suction nozzle 3000. After the heating element 200 starts to work and some of the e-liquid in the e-liquid tank 140 is consumed, the negative pressure of the e-liquid tank 140 increases. To keep the internal and external air pressure balance, the external atmosphere enters the e-liquid tank 140 through the vent channel 160, thereby increasing the fluidity of the e-liquid in the e-liquid tank 140, and ensuring smooth ventilation.

[0056]In an aspect, referring to FIG. 6 and FIG. 8, the atomization assembly 1000 further includes a seal member 300. The heating element 200 is mounted in a sealed manner between the e-liquid tank 140 and the atomization tank 150 through the seal member 300. The seal member 300 is disposed so that the heating element 200 and the housing assembly 100 are connected and sealed. Therefore, the e-liquid in the e-liquid tank 140 does not flow from the gap between the heating element 200 and the housing assembly 100 to the atomization tank 150, thereby reducing the risk that the e-liquid that has not been atomized is directly inhaled into the oral cavity of a smoker.

[0057]In an aspect, referring to FIG. 3 and FIG. 6 to FIG. 9, the housing assembly 100 includes a mounting base 110, a cartridge tube 120, and an e-liquid tube 130. The cartridge tube 120 is mounted on the mounting base 110. The e-liquid tube 130 is sleeved outside the cartridge tube 120 and the mounting base 110. The mounting base 110 and the cartridge tube 120 jointly surround the atomization tank 150. The cartridge tube 120 and the e-liquid tube 130 jointly surround the e-liquid tank 140. The vent channel 160 is formed in the outer side wall of the cartridge tube 120 and is in communication with the e-liquid tank 140. An air inlet 116 in communication with the external atmosphere is formed in the e-liquid tube 130. The air inlet 116 is in communication with the air inlet end 161 of the vent channel 160.

[0058]Specifically, referring to FIG. 6 to FIG. 9, the cartridge tube 120 includes an atomization section 122 and a smoke guide section 123 in communication with each other. The atomization section 122 is connected to the smoke guide section 123 through the connection section 124. The mounting base 110 has a support plate 112 disposed opposite to the connection section 124 and a surrounding plate 113 formed on the peripheral edge of the support plate 112. An extension plate 114 extends axially from the top end of the surrounding plate 113. The heating element 200 is supported on the support plate 112 and is disposed in the inner cavity of the atomization section 122. The e-liquid tube 130 is sleeved outside the atomization section 122, the smoke guide section 123, and the surrounding plate 113. The e-liquid tube 130 and the smoke guide section 123 surround the e-liquid tank 140. The surrounding plate 113, the extension plate 114, and the atomization section 122 jointly surround the atomization tank 150. The atomization section 122 is sleeved outside the extension plate 114. The end surface of the atomization section 122 abuts against the end surface of the surrounding plate 113. The vent channel 160 is disposed on the outer side wall of the atomization section 122 and is in communication with the e-liquid tank 140. An air inlet 116 in communication with the external atmosphere is formed in the e-liquid tube 130. The air inlet 116 is in communication with the air inlet end 161 of the vent channel 160.

[0059]Preferably, the vent channel 160 is disposed on the outer side wall of the atomization section 122 and extends through two ends in the axial direction of the atomization section 122. In this way, the size of the vent channel 160 in the axial direction can be enlarged. When the vent channel 160 is located at the side of the atomization tank 150, the atomization tank 150 can transfer more heat to the vent channel 160.

[0060]In an aspect, referring to FIG. 3 and FIG. 6 to FIG. 9, the housing assembly 100 includes a mounting base 110, a cartridge tube 120, and an e-liquid tube 130. The cartridge tube 120 is mounted on the mounting base 110. The e-liquid tube 130 is sleeved outside the cartridge tube 120 and the mounting base 110. The mounting base 110 and the cartridge tube 120 jointly surround the atomization tank 150. The cartridge tube 120 and the e-liquid tube 130 jointly surround the e-liquid tank 140. A first accommodating cavity 121 is formed in the outer side wall of the cartridge tube 120. A second accommodating cavity 111 is formed in the outer side wall of the mounting base 110. Two ends of the first accommodating cavity 121 are in communication with the e-liquid tank 140 and the second accommodating cavity 111 respectively. The side of the second accommodating cavity 111 facing away from the first accommodating cavity 121 is in communication with the external atmosphere. The vent channel 160 is jointly formed by the first accommodating cavity 121 and the second accommodating cavity 111. In this way, the size of the vent channel 160 in the axial direction can be enlarged. When the vent channel 160 is located at the side of the atomization tank 150, the atomization tank 150 can transfer more heat to the vent channel 160.

[0061]Specifically, referring to FIG. 6 to FIG. 10, the cartridge tube 120 includes an atomization section 122 and a smoke guide section 123 in communication with each other. The atomization section 122 is connected to the smoke guide section 123 through the connection section 124. The mounting base 110 has a support plate 112 disposed opposite to the connection section 124 and a surrounding plate 113 formed on the peripheral edge of the support plate 112. An extension plate 114 extends axially from the top end of the surrounding plate 113. The heating element 200 is supported on the support plate 112 and is disposed in the inner cavity of the atomization section 122. The e-liquid tube 130 is sleeved outside the atomization section 122, the smoke guide section 123, and the surrounding plate 113. The e-liquid tube 130 and the smoke guide section 123 surround the e-liquid tank 140. The surrounding plate 113, the extension plate 114, and the atomization section 122 jointly surround the atomization tank 150. The atomization section 122 is sleeved outside the extension plate 114. The end surface of the atomization section 122 abuts against the end surface of the surrounding plate 113. The first accommodating cavity 121 is formed in the outer side wall of the atomization section 122 and is open toward the inner side wall of the e-liquid tube 130. The second accommodating cavity 111 is formed in the outer side wall of the surrounding plate 113 and is open toward the inner side wall of the e-liquid tube 130. The first accommodating cavity 121 extends through two ends of the atomization section 122 in the axial direction. The first accommodating cavity 121 is in communication with the e-liquid tank 140 and the second accommodating cavity 111 in the axial direction respectively. The side of the second accommodating cavity 111 facing away from the first accommodating cavity 121 is in communication with the external atmosphere. The vent channel 160 is jointly formed by the first accommodating cavity 121 and the second accommodating cavity 111.

[0062]In this disclosure, that the side of the second accommodating cavity 111 facing away from the first accommodating cavity 121 is in communication with the external atmosphere may be that an air inlet 116 in communication with the outside is formed in the e-liquid tube 130, and the air inlet 116 is in communication with the side of the second accommodating cavity 111 facing away from the first accommodating cavity 121. Alternatively, referring to FIG. 7 to FIG. 9, an air inlet 116 in communication with the external atmosphere is formed in the mounting base 110, and the air inlet 116 is in communication with the side of the second accommodating cavity 111 facing away from the first accommodating cavity 121, provided that the second accommodating cavity 111 can be in communication with the outside. This is not specifically limited by those skilled in the art.

[0063]That an air inlet 116 in communication with the external atmosphere is formed in the mounting base 110 and the air inlet 116 is in communication with the side of the second accommodating cavity 111 facing away from the first accommodating cavity 121 may be that an air inlet 116 in communication with the second accommodating cavity 111 is formed in the end surface of the surrounding plate 113 of the mounting base 110 axially close to the battery assembly 2000. Alternatively, an air inlet 116 in communication with the second accommodating cavity 111 is formed in the side wall of the mounting base 110.

[0064]There may be one or more air inlets 116. This is not specifically limited in this aspect.

[0065]In an aspect, referring to FIG. 3 and FIG. 8, the atomization assembly 1000 further includes a connection electrode 400 and an electrode holder 500. The electrode holder 500 is disposed in the mounting base 110. The connection electrode 400 is mounted on the electrode holder 500. An electrode block 115 extends from the surrounding plate 113 of the mounting base 110. The connection electrode 400 and the electrode block 115 are electrically connected to two connection portions 203 of the heating element 200 respectively, and the mounting base 110 and the connection electrode 400 are electrically connected to the battery assembly 2000 separately, so that power may be supplied to the heating element 200 through a battery structure. Since the electrode block 115 extends from the surrounding plate 113 of the mounting base 110 and the connection electrode 400 and the electrode block 115 are electrically connected to the two connection portions 203 of the heating element 200 respectively, the electrode holder 500 is disposed to not only mount and position the connection electrode 400, but also implement insulation between the connection electrode 400 and the mounting base 110.

[0066]In an aspect, referring to FIG. 7 to FIG. 10, the first accommodating cavity 121 extends in an axial direction, and the second accommodating cavity 111 extends in a peripheral direction and is disposed around the atomization tank 150. The size of the first accommodating cavity 121 in the peripheral direction is smaller than the size of the second accommodating cavity 111 in the peripheral direction. In this way, difficulty in flowing of the high-viscosity e-liquid from the first accommodating cavity 121 in communication with the e-liquid tank 140 into the vent channel 160 can be increased. Also, since the second accommodating cavity 111 extends in the peripheral direction and is disposed around the atomization tank 150, the atomization tank 150 may transfer more heat into the second accommodating cavity 111, so that air in the second accommodating cavity 111 is sufficiently preheated and then transferred to the first accommodating cavity 121, and finally enters the e-liquid tank 140, thereby increasing the fluidity of the e-liquid in the vent channel 160 and the e-liquid tank 140.

[0067]In an aspect, referring to FIG. 7 to FIG. 10, an e-liquid storage cavity 170 is disposed on the inner bottom wall of the second accommodating cavity 111. E-liquid in the first accommodating cavity 121 is capable of flowing into the e-liquid storage cavity 170. The axial height of the e-liquid storage cavity 170 is less than the axial height of the second accommodating cavity 111. Since the second accommodating cavity 111 is in communication with the external atmosphere, when the high-viscosity e-liquid enters the second accommodating cavity 111 through the first accommodating cavity 121 due to e-liquid injection and liquid squeezing or the like, the high-viscosity e-liquid flows into the external atmosphere through the second accommodating cavity 111, causing leakage of the e-liquid. The e-liquid storage cavity 170 is disposed on the inner bottom wall of the second accommodating cavity 111. When the high-viscosity e-liquid enters the second accommodating cavity 111 through the first accommodating cavity 121, the high-viscosity smoke flows into the e-liquid storage cavity 170 for collection, thereby avoiding leakage of the e-liquid. Also, since the axial height of the e-liquid storage cavity 170 is less than the axial height of the second accommodating cavity 111, the interference of the e-liquid storage cavity 170 with the communication between the first accommodating cavity 121 and the second accommodating cavity 111 can be avoided, thereby not only avoiding leakage of the e-liquid, but also ensuring the smooth ventilation of the vent channel 160.

[0068]In this disclosure, the e-liquid storage cavity 170 may be directly formed in the second accommodating cavity 111, or may be jointly surrounded by the outer side wall of the surrounding plate 113 of the mounting base 110, the inner side wall of the e-liquid tube 130, and another structure disposed in the second accommodating cavity 111.

[0069]In an aspect, referring to FIG. 8 and FIG. 9, a first seal rib 180 and a second seal rib 190 are disposed on the inner bottom wall of the second accommodating cavity 111. The first seal rib 180 and the second seal rib 190 are located on two sides of the first accommodating cavity 121 in the peripheral direction respectively, and both extend in the axial direction. The size of the first seal rib 180 and the size of the second seal rib 190 in the axial direction are smaller than the size of the second accommodating cavity 111 in the axial direction to avoid interfere of the first seal member 300 and the second seal rib 190 with communication between the first accommodating cavity 121 and the second accommodating cavity 111, and ensure smooth ventilation of the vent channel 160. The e-liquid storage cavity 170 is jointly surrounded by the first seal rib 180, the second seal rib 190, the e-liquid tube 130, and the mounting base 110.

[0070]The first seal rib 180 and the second seal rib 190 are located at two peripheral sides of the first accommodating cavity 121. In this way, after entering the first accommodating cavity 121, the e-liquid in the e-liquid tank 140 can enter the e-liquid storage cavity 170 under the action of gravity.

[0071]In an aspect, referring to FIG. 3, both the cartridge tube 120 and the e-liquid tube 130 are in sealed connection with the suction nozzle 3000 through a seal sleeve 4000, to avoid spilling out of the e-liquid into the cartridge tube 120 or out of the tube.

[0072]The foregoing descriptions are merely optional aspects of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various changes and variations. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present disclosure should be included within the scope of the claims of the present disclosure.