ATOMIZER AND AEROSOL GENERATING DEVICE

An atomizer includes: a liquid storage cavity; a ventilation channel; and a pressure relief micro-channel. The liquid storage cavity stores an atomization substrate. One end of the ventilation channel is communicated with the liquid storage cavity, and another end of the ventilation channel is communicated with an external environment. One end of the pressure relief micro-channel is communicated with the liquid storage cavity, and another end of the pressure relief micro-channel is communicated with the external environment. A flow resistance of a fluid in the pressure relief micro-channel is greater than or equal to a flow resistance of a fluid in the ventilation channel.

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Description
CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of International Patent Application No. PCT/CN2024/120754, filed on Sep. 24, 2024, which claims priority to Chinese Patent Application No. 202322842941.7, filed on Oct. 20, 2023. The entire disclosure of both applications is hereby incorporated by reference herein.

FIELD

This application relates to the technical field of aerosol generation, and more particularly, to an atomizer and an aerosol generating device.

BACKGROUND

An atomizer generally has a liquid storage cavity. While ensuring the structural sealing property, the liquid storage cavity generally has two air inlet channels: a porous heating element and a ventilation channel. After the liquid storage cavity is filled with e-liquid, an atomization substrate is generally absorbed by the heating element to generate a liquid storage cavity negative pressure to lock the atomization substrate, or an atomization substrate leaking into the ventilation channel from the liquid storage cavity is stored through the ventilation channel. However, when the air pressure in the liquid storage cavity fluctuates significantly due to the impact of the temperature, a high positive pressure difference can be generated between the liquid storage cavity and the ventilation channel. This positive pressure difference can extrude the atomization substrate of the liquid storage cavity through the heating element and/or extrude the atomization substrate stored into the ventilation channel. Consequently, liquid leakage occurs.

SUMMARY

In an embodiment, the present invention provides an atomizer, comprising: a liquid storage cavity; a ventilation channel; and a pressure relief micro-channel, wherein the liquid storage cavity is configured to store an atomization substrate, wherein one end of the ventilation channel is communicated with the liquid storage cavity, and another end of the ventilation channel is communicated with an external environment, wherein one end of the pressure relief micro-channel is communicated with the liquid storage cavity, and another end of the pressure relief micro-channel is communicated with the external environment, and wherein a flow resistance of a fluid in the pressure relief micro-channel is greater than or equal to a flow resistance of a fluid in the ventilation channel.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of this application more clearly, the following briefly introduces the accompanying drawings for describing the embodiments or the exemplary technology Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and a person of ordinary skill in the art may still derive other drawings from the accompanying drawings without creative efforts.

FIG. 1 is a schematic diagram of a longitudinal cross-sectional view of an atomizer according to an embodiment of this application;

FIG. 2 is a schematic three-dimensional diagram of assembling of an atomization seat and a base in the atomizer in FIG. 1;

FIG. 3 is a schematic cross-sectional view of an atomization seat and a base in the atomizer in FIG. 1;

FIG. 4 is a schematic diagram of a three-dimensional structure of the atomization seat in FIG. 3;

FIG. 5 is a schematic three-dimensional diagram of assembling of an atomization seat and a base according to another embodiment of this application;

FIG. 6 is a schematic cross-sectional view of an atomization seat and a base in the atomizer in FIG. 5;

FIG. 7 is a schematic diagram of a three-dimensional structure of the atomization seat in FIG. 6;

FIG. 8 is a schematic diagram of a top structure of an atomization seat according to another embodiment of this application;

FIG. 9 is a schematic diagram of the top structure of the atomization seat in FIG. 8;

FIG. 10 is a schematic cross-sectional view of the atomization seat in FIG. 8;

FIG. 11 is a schematic cross-sectional view of an atomizer according to another embodiment of this application; and

FIG. 12 is a schematic diagram of assembling of a first mounting base and an atomization seat in the atomizer in FIG. 11.

 DETAILED DESCRIPTION

In an embodiment, the present invention provides an atomizer and an aerosol generating device.

In an embodiment, the present invention provides an atomizer. The atomizer is formed with a liquid storage cavity, a ventilation channel, and a pressure relief micro-channel. The liquid storage cavity is configured to store an atomization substrate; one end of the ventilation channel is communicated with the liquid storage cavity, and the other end of the ventilation channel is communicated with an external environment. One end of the pressure relief micro-channel is communicated with the liquid storage cavity, and the other end of the pressure relief micro-channel is communicated with the external environment. The flow resistance of a fluid in the pressure relief micro-channel is greater than or equal to the flow resistance of a fluid in the ventilation channel.

In a possible design, the cross-sectional area of the ventilation channel is greater than or equal to the cross-sectional area of the pressure relief micro-channel; and/or,

    • the length of the ventilation channel is less than the length of the pressure relief micro-channel.

In a possible design, the atomizer is further formed with an extended micro-channel. The extended micro-channel has the first end and the second end that are opposite to each other in an extension direction of the extended micro-channel. The first end is closed, and the second end is communicated with the external environment.

The ventilation channel and the pressure relief micro-channel are spaced apart from each other in the extension direction of the extended micro-channel. The length and cross-sectional area of the ventilation channel are the same as the length and cross-sectional area of the pressure relief micro-channel. The bottom ends of both the ventilation channel and the pressure relief micro-channel extend to the extended micro-channel. The distance between the second end and the ventilation channel is less than the distance between the second end and the pressure relief micro-channel.

In a possible design, the pressure relief micro-channel is a variable cross-section channel.

In a possible design, the pressure relief micro-channel includes an inlet micro-channel, a buffer section, and an outlet micro-channel. The inlet micro-channel is communicated with the bottom position of the buffer section. The outlet micro-channel is communicated with the top position of the buffer section. The cross-sectional area of the inlet micro-channel and the cross-sectional area of the outlet micro-channel are both less than the cross-sectional area of the buffer section.

In a possible design, a heating element is disposed within the atomizer. The ventilation channel is arranged close to the heating element. The pressure relief micro-channel is arranged away from the heating element.

In a possible design, the atomizer is further formed with a buffer cavity.

One end of the pressure relief micro-channel away from the liquid storage cavity is communicated with the buffer cavity, and the buffer cavity is communicated with the external environment.

Alternatively, one end of the pressure relief micro-channel and one end of the ventilation channel, both away from the liquid storage cavity, are communicated with the buffer cavity, and the buffer cavity is communicated with the external environment.

In a possible design, the atomizer is formed with a drainage channel and an air vent that are respectively communicated with the buffer cavity. The drainage channel is a capillary channel. The drainage channel communicates the buffer cavity with the pressure relief micro-channel. The drainage channel is arranged at the bottom of the buffer cavity. The air vent communicates the buffer cavity with the external environment. The air vent is disposed at the top or upper-middle position of the buffer cavity.

In a possible design, the atomizer includes an atomization seat. The atomization seat is formed with an atomization cavity, an air outlet, and an air guide cavity. The air guide cavity is communicated between the atomization cavity and the air outlet.

The air vent of the buffer cavity is communicated with the air guide cavity.

Alternatively, a connecting cavity is also formed in the atomization seat. The connecting cavity is spaced apart from the air guide cavity. The connecting cavity is communicated with the atomization cavity. The connecting cavity is communicated with the air vent of the buffer cavity.

In a second aspect. this application further provides an aerosol generating device, including a power supply unit and the foregoing atomizer. The power supply unit is configured to supply power to the atomizer.

The atomizer provided in the embodiments of this application has the beneficial effects: The atomizer is simultaneously provided with the ventilation channel and the pressure relief micro-channel. The ventilation channel and the pressure relief micro-channel are both communicated with the liquid storage cavity, and the flow resistance of the fluid in the pressure relief micro-channel is greater than or equal to the flow resistance of the fluid in the ventilation channel. When the air pressure in the liquid storage cavity decreases, ventilation can be first performed through the ventilation channel, namely, even if the pressure relief micro-channel is provided, normal ventilation of the ventilation channel will not be affected. In addition, when the air pressure in the liquid storage cavity suddenly increases to the air pressure of the external environment to an extent, the atomization substrate in the liquid storage cavity is pushed into the ventilation channel and the pressure relief micro-channel. The pressure relief micro-channel shares the atomization substrate released from the liquid storage cavity, so that the problem of leakage of the atomization substrate from the ventilation channel and the heating element due to the sudden increase of the air pressure in the liquid storage cavity can be mitigated. When the air pressure in the liquid storage cavity is recovered to a negative pressure, the atomization substrate can return to the liquid storage cavity via the pressure relief micro-channel and the ventilation channel, that is, the atomization substrate flows back. In addition, the existence of the pressure relief micro-channel can also help the atomizer to quickly relieve the pressure of the liquid storage cavity that increases due to changes in the environmental temperature or pressure, to avoid the atomization substrate from being extruded from the heating element.

The aerosol generating device provided in the embodiments of this application has the beneficial effects: By the arrangement of the foregoing atomizer, the atomization substrate released from the liquid storage cavity can be locked jointly through the ventilation channel and the pressure relief micro-channel, to mitigate the problem of leakage of the atomization substrate from the ventilation channel and the heating element due to the sudden increase in the air pressure in the liquid storage cavity. Meanwhile, the pressure relief micro-channel can help the atomizer to quickly relieve the pressure of the liquid storage cavity that increases due to changes in the environmental temperature or pressure, to avoid the atomization substrate from being extruded from the heating element. Thus, the phenomenon of liquid leakage of the aerosol generating device can be mitigated, and a user experience of the aerosol generating device is enhanced.

As mentioned in the background section, a liquid storage cavity generally has two air inlet channels while ensuring the structural sealing property,

    • which are respectively a porous heating element and a ventilation channel. After a liquid storage cavity is filled with e-liquid, an atomization substrate is generally absorbed by the heating element to generate a liquid storage cavity negative pressure to lock an atomization substrate, or an atomization substrate leaking into the ventilation channel from the liquid storage cavity is stored through the ventilation channel. However, when the air pressure in the liquid storage cavity fluctuates significantly due to the impact of the temperature, a high positive pressure difference can be generated between the liquid storage cavity and the ventilation channel. This positive pressure difference can extrude the atomization substrate from the liquid storage cavity through the heating element and/or extrude the atomization substrate stored into the ventilation channel. Consequently, liquid leakage occurs.

An ideal air state equation is PV=nRT, where P refers to the pressure intensity of ideal air; V refers to the volume of the ideal air; n represents an amount of an air substance; T represents the thermodynamic temperature of the ideal air; and R is an ideal air constant. It can be seen from the foregoing formula that the temperature and the pressure intensity are in direct proportion. When the temperature decreases, the air pressure in the liquid storage cavity decreases. When the temperature increases, the air pressure in the liquid storage cavity increases.

The leakage of the atomization substrate leads to loss of more atomization substrates in the liquid storage cavity. When a negative pressure state in the liquid storage cavity is recovered, more air needs to be introduced through the ventilation channel to achieve ventilation, so as to enhance the flowability of the atomization substrate in the liquid storage cavity. The introduction of more air leads to the larger volume of the air of a cavity portion of the liquid storage cavity. In this case, if the temperature in the liquid storage cavity dramatically increases, the air pressure in the liquid storage cavity dramatically increases. Finally, more atomization substrates in the liquid storage cavity leak.

REFERENCE NUMERALS IN THE DRAWINGS

    • 110: liquid storage cavity; 120: ventilation channel; 121: first connecting hole; 122: second connecting hole; 130: pressure relief micro-channel; 131: inlet micro-channel; 132: buffer section; 133: outlet micro-channel; 134: connecting channel; 140: extended micro-channel; 141: first end; 142: second end; 150: buffer cavity; 151: drainage channel; 152: air vent; 160: atomization cavity; 210: atomization seat; 211: connecting port; 212: air outlet; 213: air guide cavity; 214: liquid guide cavity; 215: connecting cavity; 216: second connecting slot; 220: heating element; 230: main housing; 231: outer cylinder; 232: inner cylinder; 233: air guide channel; 240: sealing member; 250: heat insulation member; 260: base; 261: air inlet; 262: mounting column; 270: electrode; 310: mouthpiece; 320: outer sleeve; 330: inner sleeve; 340: first mounting base; 341: first connecting slot; 342: third connecting slot; and 350: second mounting base.

To solve the foregoing problem, the research personnel of this application finally provide an atomizer and an aerosol generating device after doing long-time deep research. By additionally adding at least one pressure relief micro-channel 130 based on a ventilation channel 120, the atomization substrate released from the liquid storage cavity 110 can be locked jointly through the ventilation channel 130 and the pressure relief micro-channel 120, so that the phenomenon of leakage of the liquid storage cavity 110 can be mitigated. Meanwhile, the pressure relief micro-channel 130 can also help the atomizer to quickly relieve the pressure of the liquid storage cavity 110 that increases due to changes in the environmental temperature or pressure, thus avoiding the atomization substrate from being extruded from a heating element 220.

An embodiment of this application provides an aerosol generating device, including a power supply unit and an atomizer. The power supply unit is mechanically and electrically connected to the atomizer. The power supply unit is configured to supply power to the atomizer. The atomizer is configured to atomize an atomization substrate to form aerosols.

In one embodiment, referring to FIG. 1 to FIG. 6, the atomizer is formed with a liquid storage cavity 110, a ventilation channel 120, and a pressure relief micro-channel 130. The liquid storage cavity 110 is configured to store an atomization substrate. One end of the ventilation channel 120 is communicated with the liquid storage cavity 110, and the other end of the ventilation channel 120 is communicated with an external environment. One end of the pressure relief micro-channel 130 is communicated with the liquid storage cavity 110, and the other end of the pressure relief micro-channel 130 is communicated with the external environment. The flow resistance of a fluid in the pressure relief micro-channel 130 is greater than or equal to the flow resistance of a fluid in the ventilation channel 120.

It should be noted herein that the flow resistance of the fluid in the pressure relief micro-channel 130 being greater than or equal to the flow resistance of the fluid in the ventilation channel 120 means that when the same fluid flows through the pressure relief micro-channel 130 and the ventilation channel 120 respectively, the resistance to the fluid in the pressure relief micro-channel 130 is greater than or equal to the resistance to the fluid in the ventilation channel 120, that is, when the fluid needs to select the ventilation channel 120 and the pressure relief micro-channel 130 for flowing, the ventilation channel 120 can be preferred.

In this embodiment of this application, the atomizer is simultaneously provided with the ventilation channel 120 and the pressure relief micro-channel 130. The ventilation channel 120 and the pressure relief micro-channel 130 are both communicated with the liquid storage cavity 110, and the flow resistance of the fluid in the pressure relief micro-channel 130 is greater than or equal to the flow resistance of the fluid in the ventilation channel 120. When the air pressure in the liquid storage cavity 110 decreases, ventilation can be first performed through the ventilation channel 120, namely, even if the pressure relief micro-channel 130 is provided, normal ventilation of the ventilation channel 120 will not be affected. In addition, when the air pressure in the liquid storage cavity 110 suddenly increases to the air pressure of the external environment to an extent, the atomization substrate in the liquid storage cavity 110 is pushed into the ventilation channel 120 and the pressure relief micro-channel 130. The pressure relief micro-channel 130 shares the atomization substrate released from the liquid storage cavity 110, so that the problem of leakage of the atomization substrate from the ventilation channel 120 and the heating element 220 due to the sudden increase of the air pressure in the liquid storage cavity 110 can be mitigated. When the air pressure in the liquid storage cavity 110 is recovered to a negative pressure, the atomization substrate can return to the liquid storage cavity 110 via the pressure relief micro-channel 130 and the ventilation channel 120, that is, the atomization substrate flows back. In addition, the pressure relief micro-channel 130 can also help the atomizer to quickly relieve the pressure of the liquid storage cavity 110 that increases due to changes in the environmental temperature or pressure, to avoid the atomization substrate from being extruded from the heating element 220.

In one embodiment, one or more pressure relief micro-channels 130 may be provided. For example, two, three, four, five, six, seventh, or more pressure relief micro-channels 130 are provided. When a plurality of pressure relief micro-channels 130 are provided, the pressure relief micro-channels 130 are respectively spaced apart from each other. The flow resistances of the fluids in the pressure relief micro-channels 130 are greater than or equal to the flow resistance of the fluid in the ventilation channel 120. In addition, the flow resistances between the pressure relief micro-channels 130 can be the same or different. By the arrangement of the plurality of pressure relief micro-channels 130, more atomization substrates can be locked through the pressure relief micro-channels 130, to more effectively mitigate the problem of leakage.

In this application, it can ensure that the arrangement of the pressure relief micro-channels 130 will not affect the normal ventilation of the ventilation channel 120 only if the flow resistances of the fluids in the pressure relief micro-channels 130 are greater than or equal to the flow resistance of the fluid in the ventilation channel 120. The flow resistances of the fluids in the pressure relief micro-channels 130 can be greater than or equal to the flow resistance of the fluid in the ventilation channel 120 in the following manner: For example, the cross-sectional area of the pressure relief micro-channel 130 can be designed to be less than the cross-sectional area of the ventilation channel 120, thereby increasing the flow resistance of the fluid in the pressure relief micro-channel 130. For another example, the length dimension of the pressure relief micro-channel 130 can be designed to be greater than the length dimension of the ventilation channel 120, thereby increasing the flow resistance of the fluid in the pressure relief micro-channel 130. For still another example, the length dimension of the pressure relief micro-channel 130 can be designed to be greater than the length dimension of the ventilation channel 120, and the cross-sectional area of the pressure relief micro-channel 130 can be designed to be less than the cross-sectional area of the ventilation channel 120, thereby increasing the flow resistance of the fluid in the pressure relief micro-channel 130. Alternatively, the length dimension of the pressure relief micro-channel 130 can be designed to be less than the length dimension of the ventilation channel 120, and the cross-sectional area of the pressure relief micro-channel 130 can be designed to be greater than the cross-sectional area of the ventilation channel 120, thereby increasing the flow resistance of the fluid in the pressure relief micro-channel 130. In addition, the flowability of the fluid in the ventilation channel 120 can be enhanced by heating the ventilation channel 120.

It should be noted here that the length dimension of the ventilation channel 120 refers to the dimension of the ventilation channel 120 in the flowing direction of the fluid in the ventilation channel 120, namely, the dimension of the ventilation channel 120 in the length extension direction. The length dimension of the pressure relief micro-channel 130 refers to the dimension of the pressure relief micro-channel 130 in the length extension direction.

The cross-sectional area of the ventilation channel 120 refers to the cross-sectional dimension of the ventilation channel 120 perpendicular to the length extension direction of the ventilation channel 120. The cross-sectional area of the pressure relief micro-channel 130 refers to the cross-sectional dimension of the pressure relief micro-channel 130 perpendicular to the length extension direction of the pressure relief micro-channel 130.

In one embodiment, the cross-sectional area of the pressure relief micro-channel 130 is the same as the cross-sectional area the ventilation channel 120, the length dimension of the pressure relief micro-channel 130 is greater than the length dimension of the ventilation channel 120, and the flow resistance of the fluid in the pressure relief micro-channel 130 is greater than the flow resistance of the fluid in the ventilation channel 120.

In one embodiment, referring to FIG. 2 to FIG. 6, the atomizer is further formed with an extended micro-channel 140. The extended micro-channel 140 has the first end 141 and the second end 142 that are opposite to each other in the extension direction of the extended micro-channel 140. The first end 141 is closed, and the second end 142 is communicated with the external environment. The ventilation channel 120 and the pressure relief micro-channel 130 are spaced apart from each other in the extension direction of the extended micro-channel 140. The length and cross-sectional area of the ventilation channel 120 are the same as the length and cross-sectional area of the pressure relief micro-channel 130. The bottom ends of both the ventilation channel 120 and the pressure relief micro-channel 130 extend to the extended micro-channel 140. The distance between the second end 142 and the ventilation channel 120 is less than the distance between the second end 142 and the pressure relief micro-channel 130. The design of the foregoing extended micro-channel 140 increases the actual length paths of the fluid in the ventilation channel 120 and the pressure relief micro-channel 130. For example, the actual length path of the ventilation channel 120 is the first length of the ventilation channel 120 plus the second length of the extended micro-channel 140 from the ventilation channel 120 to the second end 142. The actual length path of the pressure relief micro-channel 130 is the third length of the pressure relief micro-channel 130 plus the fourth length of the extended micro-channel 140 from the pressure relief micro-channel 130 to the second end 142. Since the first length is equal to the third length, and the fourth length is greater than the second length, the actual length path of the pressure relief micro-channel 130 is greater than the actual length path of the ventilation channel 120, thereby causing the flow resistance of the fluid in the pressure relief micro-channel 130 to be greater than the flow resistance of the fluid in the ventilation channel 120.

Overall, due to the design of the extended micro-channel 140 in this application, the lengths and cross-sectional areas of both the pressure relief micro-channel 130 and the ventilation channel 120 can be designed to be the same, so that the pressure relief micro-channel 130 and the ventilation channel 120 can be processed together through the same processing procedures, thus simplifying the processing process of the pressure relief micro-channel 130 and the ventilation channel 120.

In one specific embodiment, a plurality of pressure relief micro-channels 130 are included. The ventilation channel 120 and the pressure relief micro-channels 130 are spaced apart sequentially in the extension direction of the extended micro-channel 140. The first end 141 of the extended micro-channel 140 extends to a pressure relief micro-channel 130 farthest from the ventilation channel 120. The actual length paths of the pressure relief micro-channels 130 gradually increase in the extension direction of the extended micro-channel 140. During ventilation, the ventilation channel 120 may implement the ventilation, or the ventilation channel 120 and some of the pressure relief micro-channels 130 perform the ventilation together. Specifically, one, two, three, four, five, six, seven, or more pressure relief micro-channels 130 may be included. It is not exclusively limited herein.

In one embodiment, referring to FIG. 2 to FIG. 6, the atomizer includes an atomization seat 210. The extended micro-channel 140, the ventilation channel 120, and the pressure relief micro-channels 130 are formed on the outer side wall of the atomization seat 210. The extended micro-channel 140 extends in the circumferential direction of the atomization seat 210. The ventilation channel 120 and the pressure relief micro-channels 130 are spaced apart sequentially in the circumferential direction of the atomization seat 210, and the ventilation channel 120 and the pressure relief micro-channels 130 extend in the axial direction of the atomization seat 210. In this embodiment, dimensions of the extended micro-channel 140, the ventilation channel 120, and the pressure relief micro-channels 130 all refer to micro-channels. A micro-channel refers to a channel with the small cross-sectional dimension, such as a channel with the cross-sectional dimension within a range of 10 to 1000 um. By forming the extended micro-channel 140, the ventilation channel 120, and the pressure relief micro-channels 130 on the outer side wall of the atomization seat 210, the processing difficulty of the extended micro-channel 140, the ventilation channel 120, and the pressure relief micro-channels 130 is lowered.

In one embodiment, referring to FIG. 1, the atomizer further includes a main housing 230. The main housing 230 is sleeved outside the atomization seat 210. The main housing 230 is covered on the surface of the outer side wall of the atomization seat 210, thereby blocking the outer side surfaces of the extended micro-channel 140, the ventilation channel 120, and the pressure relief micro-channels 130.

In one embodiment, referring to FIG. 2 to FIG. 6, the atomizer is further formed with a buffer cavity 150. One end of the pressure relief micro-channel 130 away from the liquid storage cavity 110 is communicated with the buffer cavity 150, and the buffer cavity 150 is communicated with the external environment. When the air pressure in the liquid storage cavity 110 suddenly increases to an extent to be greater than the air pressure of the external environment, the atomization substrate extruded into the pressure relief micro-channel 130 from the liquid storage cavity 110 can be stored into the buffer cavity 150 through the pressure relief micro-channel 130, to reduce a situation of leakage of the atomization substrate to other parts of the atomizer. When the air pressure in the liquid storage cavity 110 is recovered to a negative pressure, the atomization substrate in the buffer cavity 150 can flow back into the liquid storage cavity 110 through the pressure relief micro-channel 130. It can be understood that in other embodiments of this application, the foregoing atomizer may not be formed with the buffer cavity 150, and can directly lock the atomization substrate leaking from the liquid storage cavity 110 through the pressure relief micro-channel 130 and the ventilation channel 120. In this case, the volumes of both the pressure relief micro-channel 130 and the ventilation channel 120 can also be set to be larger, such as designing longer lengths or larger cross-sectional areas, to lock more atomization substrates.

In one embodiment, referring to FIG. 2 to FIG. 6, one end of the ventilation channel 120 away from the liquid storage cavity 110 is communicated with the buffer cavity 150. That is, the two opposite ends of the ventilation channel 120 are respectively communicated with the liquid storage cavity 110 and the buffer cavity 150. During ventilation, the external environment enters the liquid storage cavity 110 through the buffer cavity 150 and the ventilation channel 120, thereby achieving ventilation. During pressure relief, the atomization substrate extruded from the liquid storage cavity 110 enters the buffer cavity 150 for storage respectively through the ventilation channel 120 and the pressure relief micro-channel 130. When the negative pressure in the liquid storage cavity 110 is recovered to an extent, the atomization substrate in the buffer cavity 150 flows back into the liquid storage cavity 110 respectively through the ventilation channel 120 and the pressure relief micro-channel 130. In this embodiment, by communicating the ventilation channel 120 with the buffer cavity 150, the atomization substrate leaking from the ventilation channel 120 can be stored into the buffer cavity 150. In this way, the volume of the ventilation channel 120 can be designed to be smaller to lower the processing difficulty of the ventilation channel 120.

In one specific embodiment, referring to FIG. 2 to FIG. 6, the atomizer is further formed with an extended micro-channel 140 and a buffer cavity 150. The extended micro-channel 140 has the first end 141 and the second end 142 that are opposite to each other in the extension direction of the extended micro-channel 140. The first end 141 is closed, and the second end 142 is communicated with the buffer cavity 150, and the buffer cavity 150 is communicated with the external environment. The ventilation channel 120 and the pressure relief micro-channel 130 are spaced apart from each other in the extension direction of the extended micro-channel 140. The dimension of the ventilation channel 120 is the same as the dimension of the pressure relief micro-channel 130. The bottom ends of both the ventilation channel 120 and the pressure relief micro-channel 130 extend to the extended micro-channel 140. The distance between the second end 142 and the ventilation channel 120 is less than the distance between the second end 142 and the pressure relief micro-channel 130. In this embodiment, the ventilation channel 120 can be arranged in parallel with the pressure relief micro-channels 130, and the ventilation channel 120 and the pressure relief micro-channels 130 can be communicated with the buffer cavity 150 through the extended micro-channel 140, so that leaking atomization substrates can be stored through the buffer cavity 150.

In one embodiment, referring to FIG. 2 and FIG. 5, the atomizer is formed with a drainage channel 151 and an air vent 152 that are respectively communicated with the buffer cavity 150. The drainage channel 151 is a capillary channel. The drainage channel 151 communicates the buffer cavity 150 with the pressure relief micro-channel 130. Specifically, the drainage channel 151 is communicated with the extended micro-channel 140. The air vent 152 communicates the buffer cavity 150 with the external environment. The drainage channel 151 is disposed at the bottom of the buffer cavity 150. The air vent 152 is disposed at the top or upper-middle position of the buffer cavity 150. That is, the air vent 152 is disposed at the position that is at or above the half height of the buffer cavity 150, so that the buffer cavity 150 has a volume. Due to the positions of the drainage channel 151 and the air vent 152, the atomization substrates in both the pressure relief micro-channel 130 and the ventilation channel 120 can enter the buffer cavity 150 through the drainage channel 151 at the bottom of the buffer cavity 150. Before the liquid level of the buffered atomization substrates is lower than the air vent 152 and reaches its upper volume limit, the atomization substrates can remain in the buffer cavity 150 until the liquid level in the buffer cavity 150 rises to the position of the air vent 152. If more atomization substrates are buffered, the atomization substrates will flow out from the air vent 152. When the air pressure in the liquid storage cavity 110 returns to a negative pressure, the atomization substrates in the buffer cavity 150 can flow back into the liquid storage cavity 110 based on the capillary effect of the drainage channel 151 through the pressure relief micro-channel 130 and the ventilation channel 120. In addition, during ventilation, external air can enter the buffer cavity 150 through the air vent 152 and be sequentially ventilated through the drainage channel 151, the extended micro-channel 140, and the liquid storage cavity 110.

Optionally, the range of the cross-sectional dimension of the ventilation channel 120 is 0.3 mm-0.5 mm×0.3 mm-0.5 mm, and the range of the length dimension of the ventilation channel 120 is 8.0 mm-10.0 mm. The range of the cross-sectional dimension of the pressure relief micro-channel 130 is 0.3 mm-0.5 mm×0.3 mm-0.5 mm, and the range of the length dimension of the pressure relief micro-channel 130 is 8.0 mm-10.0 mm.

In one embodiment, referring to FIG. 1 to FIG. 7, the atomizer includes an atomization seat 210. The atomization seat 210 is formed with an atomization cavity 160, an air outlet 212, and an air guide cavity 213. The air guide cavity 213 is communicated between the atomization cavity 160 and the air outlet 212. In this embodiment, due to the structural design requirement of the atomization seat 210, such as the structural shape of the heating element 220 and the mounting position of the heating element 220, the atomization cavity 160 cannot be directly communicated with the air outlet 212. In this case, the air guide cavity 213 can be formed in the atomization seat 210, and the communication between the atomization cavity 160 and the air outlet 212 can be formed through the air guide cavity 213.

In one embodiment, referring to FIG. 1, FIG. 4, and FIG. 7, the atomization seat 210 is further formed with two liquid guide cavities 214 and two air guide cavities 213. The air outlet 212 is formed in the center position of the top side of the atomization seat 210, and the atomization cavity 160 is formed in the bottom side of the atomization seat 210. The two liquid guide cavities 214 and the two air guide cavities 213 are arranged in one circle around the air outlet 212. The two liquid guide cavities 214 are located on the two opposite sides of the air outlet 212, and the two air guide cavities 213 are located on the two opposite sides of the air outlet 212. A connecting port 211 is formed in the center of the top of the atomization cavity 160. The two liquid guide cavities 214 extend from the edge of the atomization seat 210 to the center of the atomization seat 210, so as to be communicated with the connecting port 211. The atomization cavity 160 is internally provided with a heating element 220. The top side of the heating element 220 is covered at the connecting port 211. The two air guide cavities 213 are communicated with the periphery of the top of the atomization cavity 160, and the two air guide cavities 213 are communicated with the air outlet 212. Specifically, the two liquid guide cavities 214 are respectively communicated with the liquid storage cavity 110. The atomization substrate in the liquid storage cavity 110 flows respectively from the two sides into the two liquid guide cavities 214, is in contact with the top side of the heating element 220 at the connecting port 211, and is atomized by the heating element 220. Aerosols generated by atomization flows from the bottom side of the heating element 220 to the atomization cavity 160, and is carried away by an airflow entering the atomization cavity 160 from the bottom of the atomization cavity 160. The airflow then flows through the air guide cavities 213 on the two sides to the air outlet 212, and is discharged through the air outlet 212 for user inhalation. In this embodiment, the heating element 220 can be disposed at the center position of the atomization seat 210, and the entire top side surface of the heating element 220 can be in contact with the atomization substrate, so that the atomization substrate can be fully heated and atomized, thus enhancing the atomization effect and inhalation taste of the atomizer. In addition, in this embodiment, since the airflow cannot flow through the center of the atomization seat 210, and the air outlet 212 needs to be disposed at the center position of the atomization seat 210, the air guide cavities 213 need to be disposed to guide the airflow in the atomization cavity 160 to the air outlet 212, and the air guide cavities 213 also need to be separated from the liquid guide cavities 214. In this embodiment, to enhance the atomization efficiency, the two air guide cavities 213 and the two liquid guide cavities 214 are provided. It can be understood that in other embodiments of this application, one, three, or more air guide cavities 213 and liquid guide cavities 214 may be provided. They are not exclusively limited herein.

In one embodiment, referring to FIG. 3, the air vent 152 of the buffer cavity 150 is communicated with the air guide cavity 213. In this embodiment, the air vent 152 of the buffer cavity 150 extends into the air guide cavity 213, and the air guide cavity 213 is communicated with the external environment through the atomization cavity 160, so that the air pressure at the air vent 152 of the buffer cavity 150 is equal to an environmental air pressure. The air vent 152 of the buffer cavity 150 directly extends into the air guide cavity 213, so that the extension path of the air vent 152 is reduced, and the processing difficulty of the atomization seat 210 is lowered.

In another embodiment of this application, referring to FIG. 6, the atomizer is further formed with a connecting cavity 215. The connecting cavity 215 is spaced apart from the air guide cavity 213. The connecting cavity 215 is communicated with the atomization cavity 160. The connecting cavity 215 is communicated with the air vent 152 of the buffer cavity 150. In this embodiment, by the arrangement of the connecting cavity 215, the air vent 152 of the buffer cavity 150 is not directly communicated with the air guide cavity 213. That is, an atomization substrate leaking from the air vent 152 of the buffer cavity 150 can flow to the connecting cavity 215 instead of directly flowing to the air guide cavity 213, thereby avoiding the leaking atomization substrate from entering the air outlet 212 from the air guide cavity 213 and causing inhalation leakage. Meanwhile, the liquid leakage because the atomization substrate leaking into the air guide cavity 213 can enter the air outlet 212 when the atomizer is inverted can be avoided as well.

In one embodiment, referring to FIG. 1, the atomization cavity 160 further includes a main housing 230. The main housing 230 includes an outer cylinder 231 and an inner cylinder 232. The top end of the outer cylinder 231 is connected to the top end of the inner cylinder 232. The inner cylinder 232 is tubular. The top end of the outer cylinder 231 is inwards contracted to form a mouthpiece shape. The bottom end of the outer cylinder 231 is sleeved outside the atomization seat 210, and the bottom end of the inner cylinder 232 is communicated with the air outlet 212. The liquid storage cavity 110 is enclosed between the outer cylinder 231 and the inner cylinder 232, and an air guide channel 233 is formed in the center of the inner cylinder 232. The air guide channel 233 guides the airflow discharged from the air outlet 212.

In one embodiment, referring to FIG. 1, the atomization cavity 160 further includes a sealing member 240. The sealing member 240 is sleeved on the outer circumferential wall of the atomization seat 210 to form a sealed connection between the outer cylinder 231 and the atomization seat 210. The top side of the sealing member 240 is hermetically abutted with a joint between the inner cylinder 232 and the connecting port 211, to form a sealed connection between the inner cylinder 232 and the atomization seat 210.

In one embodiment, referring to FIG. 1, the atomizer further includes a base 260. The base 260 is sleeved on the bottom end of the atomization seat 210. An air inlet 261 is formed in the center of the bottom of the base 260. The atomization cavity 160 is enclosed jointly by the base 260 and the atomization seat 210, and the air inlet 261 is communicated with the atomization cavity 160. A mounting column 262 is further formed on the base 260. The mounting column 262 is configured to mount an electrode 270. One end of the electrode 270 is connected to the heating element 220, and the other end of the electrode 270 is connected to the power supply unit, thereby supplying power to the heating element 220.

In one embodiment, referring to FIG. 1, the top side of the heating element 220 is further provided with a heat insulation member 250. The heat insulation member 250 is abutted with the circumferential edge of the heating element 220 and the atomization seat 210. The heat insulation member 250 is configured for heat insulation. The heat insulation member 250 can be made of ceramic or other materials with the heat insulation effect.

In another embodiment of this application, the end of the ventilation channel 120 away from the liquid storage cavity 110 may not be communicated with the buffer cavity 150. In this case, the volume of the ventilation channel 120 can be set to be larger, and the atomization substrate inside can be locked by the structure of the ventilation channel 120 itself. For example, in one embodiment, the end of the ventilation channel 120 away from the liquid storage cavity 110 can be directly communicated with the external environment. Alternatively, the atomizer is further formed with an atomization cavity 160. The end of the ventilation channel 120 away from the liquid storage cavity 110 is communicated with the atomization cavity 160. The ventilation channel 120 introduces the external air through the atomization cavity 160.

Alternatively, a cartridge can be additionally arranged at the other end of the ventilation channel 120 facing away from the liquid storage cavity 110, so as to receive and store, through the cartridge, e-liquid leaking from the ventilation channel 120.

In other embodiments of this application, the pressure relief micro-channel 130 and the ventilation channel 120 may alternatively be designed with other shapes and positions to achieve ventilation and pressure relief functions respectively.

For example, in one embodiment, the pressure relief micro-channel 130 is a variable cross-section channel. That is, the pressure relief micro-channel 130 is composed of a plurality of sections of channels, and the cross-sectional areas of the sections of channels are not completely the same. By changing the cross-sectional areas of the sections of channels, various steps are made inside the pressure relief micro-channel 130 to block the fluid, thereby increasing the flow resistance in the pressure relief micro-channel 130.

In one specific embodiment, referring to FIG. 8, the pressure relief micro-channel 130 includes an inlet micro-channel 131, a buffer section 132, and an outlet micro-channel 133. The inlet micro-channel 131 is communicated with the bottom position of the buffer section 132. The outlet micro-channel 133 is communicated with the top position of the buffer section 132. The cross-sectional area of the inlet micro-channel 131 and the cross-sectional area of the outlet micro-channel 133 are both less than the cross-sectional area of the buffer section 132. In this embodiment, by disposing the buffer section 132 between the inlet micro-channel 131 and the outlet micro-channel 133, a plurality of cross sections in the pressure relief micro-channel 130 suddenly change. This will cause a local loss and increase the flow resistance. In addition, by the arrangement of the buffer section 132, the atomization substrate can be stored, so as to mitigate the situation of the leakage of the atomization substrate into the atomization cavity 160.

In one embodiment, referring to FIG. 8, the pressure relief micro-channel 130 further includes a connecting channel 134. The connecting channel 134 is connected between the buffer section 132 and the outlet micro-channel 133. The cross-sectional area of the connecting channel 134 is greater than the cross-sectional area of the outlet micro-channel 133 and is less than the cross-sectional area of the buffer section 132. By the arrangement of the connecting channel 134, the number of sudden cross-sectional changes in the pressure relief micro-channel 130 is increased, and the flow resistance in the pressure relief micro-channel 130 is increased. It can be understood that in other embodiments of this application, the pressure relief micro-channel 130 may not include the connecting channel 134, or the pressure relief micro-channel 130 may include a plurality of connecting channels 134. This is not exclusively limited herein.

In one embodiment, referring to FIG. 8, the pressure relief micro-channel 130 includes two inlet micro-channels 131, two buffer sections 132, and one outlet micro-channel 133. The two buffer sections 132 are disposed on the two opposite sides of the outlet micro-channel 133, and the two inlet micro-channels 131 are respectively communicated with the two buffer sections 132. When the connecting channel 134 is included, the two buffer sections 132 are located on the two opposite sides of the connecting channel 134. It can be understood that in other embodiments of this application, a plurality of pressure relief micro-channels 130 may be included, and the plurality of pressure relief micro-channels 130 are independent of each other. This is not exclusively limited here.

In one embodiment, the range of the cross-sectional dimension of the inlet micro-channel 131 is 0.15 mm-0.25 mm×0.25 mm-0.35 mm, and range of the length dimension is 0.7 mm-0.9 mm. The range of the cross-sectional dimension of the outlet micro-channel 133 is 0.15 mm-0.25 mm×0.35 mm-0.45 mm, and the range of the length is 1.2 mm-1.7 mm. Certainly, in other embodiments, the dimensions of the inlet micro-channel 131 and the outlet micro-channel 133 can be changed based on actual needs. This is not exclusively limited herein.

For another example, in another embodiment of this application, the fluidity of the fluid in the ventilation channel 120 can be increased. Specifically, a heating element 220 is disposed within the atomizer. The ventilation channel 120 is close to the heating element 220, and the pressure relief micro-channel 130 is away from the heating element 220. In this embodiment, since the pressure relief micro-channel 130 is farther away from a heating region of the heating element 220 relative to the ventilation channel 120, the viscosity of the substrate inside the pressure relief micro-channel 130 is higher and the flow resistance is also higher.

In one embodiment, referring to FIG. 8 to FIG. 11, the heating element 220 is disposed at the center position of the atomization cavity 160. In the radial direction of the atomizer, the ventilation channel 120 is closer to the heating element 220 relative to the pressure relief micro-channel 130.

In one embodiment, referring to FIG. 8 to FIG. 11, the atomizer includes an atomization seat 210. The heating element 220 is assembled in an inner cavity of the atomization seat 210. The ventilation channel 120 is formed on the inner wall of the atomization seat 210. The ventilation channel 120 extends in the circumferential direction of the heating element 220. The pressure relief micro-channel 130 is formed on the outer side wall of the atomization seat 210.

In one embodiment, referring to FIG. 8 to FIG. 10, a first connecting hole 121 and a second connecting hole 122 are formed in the atomization seat 210. The first connecting hole 121 extends from the inner wall of the top side of the atomization seat 210 to the ventilation channel 120, and the second connecting hole 122 extends from the ventilation channel 120 to the inner wall of the bottom side of the atomization seat 210. The top side of the atomization seat 210 is communicated with the liquid storage cavity 110, and the bottom side of the atomization seat 210 is communicated with the atomization cavity 160, thereby achieving communication of the ventilation channel 120 between the liquid storage cavity 110 and the atomization cavity 160.

In one embodiment, referring to FIG. 8 to FIG. 10, the atomizer includes an atomization seat 210. The heating element 220 is assembled in the center position of the atomization seat 210. The ventilation channel 120 is formed on the inner wall of the atomization seat 210. The ventilation channel 120 extends in the circumferential direction of the heating element 220. The ventilation channel 120 is communicated with the liquid storage cavity 110 through the first connecting hole 121, and the ventilation channel 120 is communicated with the atomization cavity 160 through the second connecting hole 122. The pressure relief micro-channel 130 is formed on the outer side wall of the atomization seat 210. The pressure relief micro-channel 130 includes two inlet micro-channels 131, two buffer sections 132, and one outlet micro-channel 133. The two buffer sections 132 are disposed on the two opposite sides of the connecting channel 134. The two inlet micro-channels 131 are respectively communicated with the two buffer sections 132. The outlet micro-channel 133 is communicated with the atomization cavity 160.

Optionally, the range of the sectional dimension of the ventilation channel 120 is 0.3 mm-0.5 mm×0.3 mm-0.5 mm, and the range of the length is 5 mm-7 mm. In this embodiment, since the ventilation channel 120 is not connected to the buffer cavity, the volume of the ventilation channel 120 needs to be designed to be larger to lock in more atomization substrates. Meanwhile, due to the longer length of the ventilation channel 120, to make the flow resistance in the pressure relief micro-channel 130 greater than or equal to the flow resistance in the ventilation channel 120, this embodiment not only sets the pressure relief micro-channel 130 as a multi-section channel, but also makes the ventilation channel 120 abut against the heating element 220, and the pressure relief micro-channel 130 is formed on the outer side wall of the atomization seat 210, thereby increasing the flow resistance in the pressure relief micro-channel 130.

In this embodiment, the heating element 220 is disposed at the center position of the atomization seat 210, and an airflow channel of the atomizer directly penetrates through the center position of the heating element 220. The atomization substrate in the liquid storage cavity 110 needs to enter the heating element 220 from a non-center region of the atomization seat 210 to achieve atomization.

Specifically, referring to FIG. 11, the atomizer further includes a mouthpiece 310, an outer sleeve 320, an inner sleeve 330, a first mounting base 340, and a second mounting base 350. The first mounting base 340 and the second mounting base 350 are sleeved vertically. The first mounting base 340 and the second mounting base 350 jointly enclose the atomization cavity 160. The atomization seat 210 is mounted in the first mounting base 340 and is located in the atomization cavity 160. The heating element 220 is mounted in the center of the atomization seat 210, and an air inlet channel is formed in the bottom center of the second mounting base 350. The bottom end of the inner sleeve 330 is inserted from the center of the top of the first mounting base 340 to be communicated with a center hole of the heating element 220. The outer sleeve 320 is sleeved outside the inner sleeve 330, and the bottom end of the outer sleeve 320 is sleeved outside the first mounting base 340. The liquid storage cavity 110 is formed between the outer sleeve 320 and the inner sleeve 330. The mouthpiece 310 is mounted at the top end of the inner sleeve 330 and the outer sleeve 320. The mouthpiece 310 is hermetically connected to the outer sleeve 320 and the inner sleeve 330. The mouthpiece 310 is communicated with the inner sleeve 330, and the atomization cavity 160, the heating element 220, the inner sleeve 330, and the mouthpiece 310 are sequentially communicated. A first connecting slot 341 is formed in the first mounting base 340, and a second connecting slot 216 is formed in the atomization seat 210. Liquid in the liquid storage cavity 110 flows towards the heating element 220 through the first connecting slot 341 and the second connecting slot 216.

In one embodiment, a third connecting slot 342 is further formed in the first mounting base 340, and the first connecting hole 121 is communicated with the liquid storage cavity 110 through the third connecting slot 342.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.

Claims

1. An atomizer, comprising:

a liquid storage cavity;
a ventilation channel; and
a pressure relief micro-channel,
wherein the liquid storage cavity is configured to store an atomization substrate,
wherein one end of the ventilation channel is communicated with the liquid storage cavity, and another end of the ventilation channel is communicated with an external environment,
wherein one end of the pressure relief micro-channel is communicated with the liquid storage cavity, and another end of the pressure relief micro-channel is communicated with the external environment, and
wherein a flow resistance of a fluid in the pressure relief micro-channel is greater than or equal to a flow resistance of a fluid in the ventilation channel.

2. The atomizer of claim 1, wherein a cross-sectional area of the ventilation channel is greater than or equal to a cross-sectional area of the pressure relief micro-channel, and/or,

wherein a length of the ventilation channel is less than a length of the pressure relief micro-channel.

3. The atomizer of claim 1, further comprising:

an extended micro-channel having a first end and the second end that are opposite to each other in an extension direction of the extended micro-channel, the first end being closed, and the second end being communicated with the external environment,
wherein the ventilation channel and the pressure relief micro-channel are spaced apart from each other in the extension direction of the extended micro-channel,
wherein a length and cross-sectional area of the ventilation channel are the same as a length and cross-sectional area of the pressure relief micro-channel,
wherein bottom ends of both the ventilation channel and the pressure relief micro-channel extend to the extended micro-channel, and
wherein a distance between the second end and the ventilation channel is less than a distance between the second end and the pressure relief micro-channel.

4. The atomizer of claim 3, wherein the pressure relief micro-channel comprises a plurality of pressure relief micro-channels,

wherein the ventilation channel and the pressure relief micro-channels are spaced apart sequentially in the extension direction of the extended micro-channel, and
wherein a first end of the extended micro-channel extends to a pressure relief micro-channel farthest from the ventilation channel.

5. The atomizer of claim 4, further comprising:

an atomization seat,
wherein the extended micro-channel, the ventilation channel, and the pressure relief micro-channels are formed on an outer side wall of the atomization seat,
wherein the extended micro-channel extends in a circumferential direction of the atomization seat,
wherein the ventilation channel and the pressure relief micro-channels are spaced apart sequentially in the circumferential direction of the atomization seat, and
wherein the ventilation channel and the pressure relief micro-channels extend in an axial direction of the atomization seat.

6. The atomizer of claim 1, wherein the pressure relief micro-channel comprises a variable cross-section channel.

7. The atomizer of claim 6, wherein the pressure relief micro-channel comprises an inlet micro-channel, a buffer section, and an outlet micro-channel,

wherein the inlet micro-channel is communicated with a bottom position of the buffer section,
wherein the outlet micro-channel is communicated with a top position of the buffer section, and
wherein a cross-sectional area of the inlet micro-channel and a cross-sectional area of the outlet micro-channel are both less than a cross-sectional area of the buffer section.

8. The atomizer of claim 7, wherein the pressure relief micro-channel comprises a connecting channel,

wherein the connecting channel is connected between the buffer section and the outlet micro-channel, and
wherein a cross-sectional area of the connecting channel is greater than a cross-sectional area of the outlet micro-channel and is less than a cross-sectional area of the buffer section.

9. The atomizer of claim 1, wherein a heating element is disposed within the atomizer,

wherein the ventilation channel is arranged close to the heating element, and
wherein the pressure relief micro-channel is arranged away from the heating element.

10. The atomizer of claim 9, wherein the heating element is disposed at a center position of the atomization cavity, and

wherein, in a radial direction of the atomizer, the ventilation channel is closer to the heating element relative to the pressure relief micro-channel.

11. The atomizer of claim 9, further comprising:

an atomization seat,
wherein the heating element is assembled in an inner cavity of the atomization seat,
wherein the ventilation channel is formed on an inner wall of the atomization seat,
wherein the ventilation channel extends in the circumferential direction of the heating element, and
wherein the pressure relief micro-channel is formed on an outer side wall of the atomization seat.

12. The atomizer of claim 1, further comprising:

a buffer cavity;
wherein one end of the pressure relief micro-channel away from the liquid storage cavity is communicated with the buffer cavity, and the buffer cavity is communicated with the external environment, or
alternatively, wherein one end of the pressure relief micro-channel and one end of the ventilation channel, both away from the liquid storage cavity, are communicated with the buffer cavity, and the buffer cavity is communicated with the external environment.

13. The atomizer of claim 12, wherein the atomizer is formed with a drainage channel and an air vent that are respectively communicated with the buffer cavity,

wherein the drainage channel is a capillary channel,
wherein the drainage channel communicates the buffer cavity with the pressure relief micro-channel,
wherein the drainage channel is arranged at a bottom of the buffer cavity,
wherein the air vent communicates the buffer cavity with the external environment, and
wherein the air vent is disposed at a top or upper-middle position of the buffer cavity.

14. The atomizer of claim 13, further comprising:

an atomization seat formed with an atomization cavity, an air outlet, and an air guide cavity,
wherein the air guide cavity is communicated between the atomization cavity and the air outlet,
wherein the air vent of the buffer cavity is communicated with the air guide cavity,
wherein, alternatively, a connecting cavity is also formed in the atomization seat, the connecting cavity is spaced apart from the air guide cavity, the connecting cavity is communicated with the atomization cavity, and the connecting cavity is communicated with the air vent of the buffer cavity.

15. An aerosol generating device, comprising:

a power supply unit; and
the atomizer of claim 1,
wherein the power supply unit is configured to supply power to the atomizer.
Patent History
Publication number: 20260248185
Type: Application
Filed: Apr 20, 2026
Publication Date: Aug 27, 2026
Applicant: SHENZHEN SMOORE TECHNOLOGY LIMITED (Shenzhen)
Inventors: Boxue GONG (Shenzhen), Zhiyong KE (Shenzhen)
Application Number: 19/652,476
Classifications
International Classification: A24F 40/42 (20200101); A24F 40/10 (20200101); A24F 40/46 (20200101); A24F 40/485 (20200101);