(19)
(11)EP 4 268 633 A1

(12)EUROPEAN PATENT APPLICATION

(43)Date of publication:
01.11.2023 Bulletin 2023/44

(21)Application number: 23169799.6

(22)Date of filing:  25.04.2023
(51)International Patent Classification (IPC): 
A24F 40/10(2020.01)
A24F 40/42(2020.01)
(52)Cooperative Patent Classification (CPC):
A24F 40/10; A24F 40/42
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30)Priority: 29.04.2022 CN 202221043804 U

(71)Applicant: Jiangmen Smoore New Material Co., Ltd.
Jiangmen City, Guangdong 529080 (CN)

(72)Inventor:
  • ZHU, Haoliang
    Jiangmen (CN)

(74)Representative: Michalski Hüttermann & Partner Patentanwälte mbB 
Kaistraße 16A
40221 Düsseldorf
40221 Düsseldorf (DE)

  


(54)ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE


(57) The present invention relates to an atomizer and an electronic atomization device. The atomizer includes: a housing; an atomization assembly, including a sleeve and an atomization core, where the sleeve is arranged in the housing, a liquid storage cavity is defined between the housing and the sleeve, the atomization core is assembled in the sleeve, and a liquid inlet hole communicating the atomization core and the liquid storage cavity is provided on the sleeve; and a vent tube, where the vent tube is sleeved between the sleeve and the atomization core, and spaced apart from at least one of the sleeve or the atomization core to form a vent channel, where the vent channel is capable of being in communication with the liquid inlet hole and the outside.




Description

TECHNICAL FIELD



[0001] The present invention relates to the field of atomization technologies, and in particular, to an atomizer and an electronic atomization device.

BACKGROUND



[0002] An aerosol is a colloidal dispersion system formed by solid or liquid small particles dispersed and suspended in a gas medium. Because the aerosol may be absorbed by a human body through the respiratory system, a new alternative absorption method is provided for users. For example, an atomization device that can bake and heat an herb or ointment aerosol-generation substrate to generate aerosols is applied to different fields to deliver inhalable aerosols to the users to replace conventional product forms and absorption methods.

[0003] An electronic atomization device usually uses an atomizer to heat and vaporize an aerosol-generation substrate. In the related art, a cotton core atomization core is plugged in a sleeve, and when the aerosol-generation substrate in a liquid storage cavity flows continuously to the atomization core through a liquid inlet hole on the sleeve, a negative pressure will be formed in the liquid storage cavity, which will cause obstructed liquid feeding of the aerosol-generation substrate.

SUMMARY



[0004] Based on this, it is necessary to provide an atomizer and an electronic atomization device to address the problem of obstructed liquid feeding of the aerosol-generation substrate in the related art.

[0005] The atomizer includes:

a housing;

an atomization assembly including a sleeve and an atomization core, wherein the sleeve is arranged in the housing, a liquid storage cavity is defined between the housing and the sleeve, the atomization core is assembled in the sleeve, and a liquid inlet hole communicating the atomization core and the liquid storage cavity is provided on the sleeve; and

a vent tube sleeved between the sleeve and the atomization core, the vent tube being spaced apart from at least one of the sleeve or the atomization core to form a vent channel, wherein the vent channel is configured to be in communication with the liquid inlet hole and an outside.



[0006] In the foregoing atomizer, an aerosol-generation substrate in the liquid storage cavity can directly flow to the atomization core through the liquid inlet hole, so as to supply liquid to the atomization core. In addition, the atomizer further includes the vent tube, which is sleeved between the sleeve and the atomization core, and spaced apart from at least one of the sleeve or the atomization core to form the vent channel, and the vent channel is configured to be in communication with the liquid inlet hole and the outside. In this way, by arranging the vent tube between the atomization core and the sleeve, a gap formed between the vent tube and at least one of the atomization core or the sleeve forms the vent channel. When the aerosol-generation substrate flows from the liquid storage cavity to the atomization core, external air can flow to the liquid inlet hole and the liquid storage cavity through the vent channel, so as to prevent formation of a negative pressure in the liquid storage cavity, and maintain the air pressure balance between the liquid storage cavity 20 and the outside atmospheric pressure, thereby ensuring smooth liquid feeding.

[0007] In an embodiment, a size of the vent channel ranges from 0.05 mm to 0.15 mm.

[0008] In an embodiment, the atomization core includes a base body and a core body, the base body is sleeved in the sleeve, and the core body is at least partially mounted on the base body, where a through hole communicating the liquid inlet hole and the core body is provided on the base body; and the vent tube is sleeved between the base body and the sleeve, and the vent tube is spaced apart from at least one of the base body or the sleeve to form the vent channel.

[0009] In an embodiment, the vent tube is fixedly sleeved on the base body, and a gap is formed between the vent tube and the sleeve in a radial direction so as to define the vent channel.

[0010] In an embodiment, the vent tube is fixedly sleeved on an inner wall of the sleeve, and a gap is formed between the vent tube and the base body in a radial direction so as to define the vent channel.

[0011] In an embodiment, a gap is formed between the vent tube and each of the sleeve and the base body in a radial direction so as to define the vent channel.

[0012] In an embodiment, a vent groove extending and provided in an axial direction of the vent tube is provided on the base body, one part of the vent groove is located inside the vent tube, and the other part of the vent groove extends to be in communication with the through hole, and the vent groove comprises the vent channel.

[0013] In an embodiment, the sleeve includes a first tube section and a second tube section connected to each other, a diameter of the first tube section is greater than that of the second tube section, and both the atomization core and the vent tube are sleeved in the first tube section, where the core body is internally provided with a run-through hole, the run-through hole is in communication with an interior of the second tube section, and the run-through hole and the second tube section are combined to form an airflow channel; the second tube section has a transition connection portion connected to the first tube section, an air passing gap is formed between the transition connection portion and the atomization core, and the air passing gap is in communication with the airflow channel and the vent channel.

[0014] In an embodiment, a protruding boss is formed on an outer circumferential surface of the base body, and the vent tube is sleeved outside the base body and located between the transition connection portion and the protruding boss.

[0015] In an embodiment, one end of the vent tube in the axial direction is supported on the protruding boss, and a gap is formed between the other end of the vent tube in the axial direction and the transition connection portion; and a gap is formed between the vent tube and each of the base body and the sleeve in the radial direction, or the vent tube is fixedly sleeved on the base body, and a gap is formed between the vent tube and the sleeve in the radial direction.

[0016] In an embodiment, the vent tube is fixedly sleeved on the inner wall of the sleeve, and a gap is formed between the vent tube and each of the outer circumferential surface of the base body and the protruding boss.

[0017] In an embodiment, the vent tube is a fiberglass tube.

[0018] An electronic atomization device is provided, including the foregoing atomizer.

BRIEF DESCRIPTION OF THE DRAWINGS



[0019] 

FIG. 1 is a cross-sectional view of an atomizer according to an embodiment of the present invention;

FIG. 2 is a perspective exploded view of the atomizer shown in FIG. 1; and

FIG. 3 is a partial assembly view of the atomizer shown in FIG. 2.



[0020] Reference numerals: 100. atomizer; 10. housing; 20. liquid storage cavity; 30. sleeve; 32. liquid inlet hole; 33. first tube section; 35. second tube section; 37. transition connection portion; 50. atomization core; 52. base body; 521. through hole; 523. vent groove; 53. protruding boss; 54. core body; 70. vent tube; 80. vent channel.

DETAILED DESCRIPTION



[0021] To make the foregoing objects, features and advantages of the invention more comprehensible, detailed description is made to specific implementations of the invention below with reference to the accompanying drawings. In the following description, many specific details are described for thorough understanding of the invention. However, the invention can be implemented in many other manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] In the description of the invention, it should be understood that, orientation or position relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are orientation or position relationship shown based on the accompanying drawings, and are merely used for describing the invention and simplifying the description, rather than indicating or implying that the mentioned apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the quantity of technical features indicated. Therefore, a feature restricted by "first" or "second" may explicitly indicate or implicitly include at least one of such features. In the description of the invention, unless otherwise explicitly defined, "a plurality of" means at least two, for example, two, three, and the like.

[0024] In the invention, unless otherwise expressly specified and limited, the terms such as "installation", "link", "connection" and "fixation" should be understood in a broad sense, for example, it may be fixed connection or detachable connection, or integration; and it may be mechanical connection or electrical connection; and it may be direct link or indirect link through an intermediary, and it may be internal communication of two elements or interaction between two elements, unless specifically limited otherwise. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the invention according to specific situations.

[0025] In the invention, unless otherwise explicitly specified and defined, a first feature "on" or "below" a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediary. In addition, that the first feature is "above", "over", or "on" the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that a horizontal height of the first feature is higher than that of the second feature. That the first feature is "below", "under", and "beneath" the second feature may indicate that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal height of the first feature is lower than that of the second feature.

[0026] It should be noted that, when a component is referred to as "being fixed to" or "being arranged on" another component, the component may be directly on another component, or there may be an intermediate component. When an element is considered to be "connected to" another element, the element may be directly connected to another element, or an intermediate element may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in this specification are only for purposes of illustration but not indicate a unique implementation.

[0027] Referring to FIG. 1, according to an embodiment of the present invention, an atomizer 100 is provided, which includes a housing 10 and an atomization assembly. The atomization assembly includes a sleeve 30 and an atomization core 50. The sleeve 30 is arranged in the housing 10. A liquid storage cavity 20 is defined between the housing 10 and the sleeve 30. The atomization core 50 is assembled in the sleeve 30. A liquid inlet hole 32 communicating the atomization core 50 and the liquid storage cavity 20 is provided on the sleeve 30. An aerosol-generation substrate in the liquid storage cavity 20 can directly flow to the atomization core 50 through the liquid inlet hole 32, so as to supply liquid to the atomization core 50.

[0028] In addition, the atomizer 100 further includes a vent tube 70. The vent tube 70 is sleeved between the sleeve 30 and the atomization core 50, and is spaced apart from at least one of the sleeve 30 or the atomization core 50 to form a vent channel 80. The vent channel 80 is configured to be in communication with the liquid inlet hole 32 and an outside. In this way, by arranging the vent tube 70 between the atomization core 50 and the sleeve 30, a gap between the vent tube 70 and at least one of the atomization core 50 or the sleeve 30 forms the vent channel 80. When the aerosol-generation substrate flows from the liquid storage cavity 20 to the atomization core 50, external air can flow to the liquid inlet hole 32 and the liquid storage cavity 20 through the vent channel 80, so as to prevent formation of a negative pressure in the liquid storage cavity 20, and maintain the air pressure balance between the liquid storage cavity 20 and the outside atmosphere, thereby ensuring smooth liquid feeding.

[0029] In some embodiments, a size of the vent channel 80 ranges from 0.05 mm to 0.15 mm, and the relatively narrow size of the vent channel 80 can form a capillary effect. Specifically, the vent channel 80 can have a ventilation state and a closed state. In the closed state, the air pressure in the liquid storage cavity 20 is in balance with the outside atmosphere, and an interior of the vent channel 80 is sealed by a liquid film formed by the capillary effect. In other words, the vent tube 70 is arranged between the sleeve 30 and the atomization core 50, and the space between the sleeve 30 and the atomization core 50 is divided by the vent tube 70, so that both a gap between the vent tube 70 and the sleeve 30 and a gap between the vent tube 70 and the atomization core 50 are very small, and then when pressure difference between the inside and outside is balanced, the aerosol-generation substrate in the liquid storage cavity 20 can enter the vent channel 80 by the capillary effect, and a liquid film blocking the vent channel 80 is formed, so as to close the vent channel 80 and prevent the aerosol-generation substrate in the liquid storage cavity 20 from leaking through the vent channel 80.

[0030] Moreover, when in the ventilation state, a negative pressure is generated in the liquid storage cavity 20, the liquid film ruptures under the action of the outside atmosphere, and the vent channel 80 communicates the liquid inlet hole 32 with the outside, so that an external airflow can enter the liquid storage cavity 20 through the vent channel 80, so as to maintain the air pressure balance between the liquid storage cavity 20 and the outside atmosphere during liquid feeding, thereby preventing obstructed liquid feeding.

[0031] In some embodiments, the atomization core 50 includes a base body 52 and a core body 54. The base body 52 is sleeved in the sleeve 30, and the core body 54 is sleeved in the base body 52. A through hole 521 communicating the liquid inlet hole 32 and the core body 54 is provided on the base body 52, and the aerosol-generation substrate in the liquid storage cavity 20 passes through the liquid inlet hole 32 and then flows to the core body 54 through the through hole 521 on the base body 52, so as to directly supply liquid to the core body 54 in the base body 52. In addition, the vent tube 70 is sleeved between the base body 52 and the sleeve 30, and is spaced apart from at least one of the base body 52 or the sleeve 30 to form the vent channel 80, so that the gap between the vent tube 70 and at least one of the base body 52 or the sleeve 30 forms the vent channel 80 to ensure smooth liquid feeding; and when the atomizer 100 is not in use, the liquid film in the vent channel 80 is used for sealing to prevent liquid leakage.

[0032] Further, the core body 54 is constructed as inner cotton wrapping heating wires, so that in the assembly process, it is only necessary to insert the inner cotton wrapping the heating wires into the base body 52, and then place the base body 52 into the sleeve 30. Outer cotton wound around the base body 52 in a conventional cotton core body 54 is eliminated to improve the convenience of assembly. In addition, the vent channel 80 is defined by the vent tube 70, so as to prevent obstructed liquid feeding.

[0033] In some embodiments, the sleeve 30 includes a first tube section 33 and a second tube section 35 connected to each other, and a diameter of the first tube section 33 is greater than that of the second tube section 35. Both the atomization core 50 and the vent tube 70 are sleeved in the first tube section 33. The core body 54 is internally provided with a run-through hole, the run-through hole is in communication with the interior of the second tube section 35, and the run-through hole and the second tube section are combined to form an airflow channel. When flowing through the airflow channel, the external airflow can carry the aerosol-generation substrate vaporized by the core body 54 to flow outward for the user to inhale. In addition, the second tube section 35 has a transition connection portion 37 connected to the first tube section33, and an air passing gap is formed between the transition connection portion 37 and the atomization core 50. The air passing gap communicates the airflow channel with the vent channel 80, so that during liquid feeding, the external air can flow through the airflow channel to the vent channel 80 through the air passing gap, and finally flow to the liquid storage cavity 20, so as to balance the air pressure in the liquid storage cavity 20 with the outside atmosphere, thereby ensuring smooth liquid feeding.

[0034] Further, a protruding boss 53 is formed on an outer circumferential surface of the base body 52. The vent tube 70 is sleeved outside the base body 52 and located between the transition connection portion 37 and the protruding boss 53. In this way, the vent tube 70 can be limited by the protruding boss 53 to a position close to the transition connection portion 37, thereby facilitating the communication between the vent channel 80 and the air passing gap at the transition connection portion 37.

[0035] In some embodiments, the vent tube 70 is fixedly sleeved on the base body 52, that is, the vent tube 70 is in a zero clearance fit or interference fit with the base body 52. A gap defining the vent channel 80 is formed between the vent tube 70 and the sleeve 30 in a radial direction. In this way, the vent tube 70 is fixedly assembled on the base body 52, and the gap between the vent tube 70 and the sleeve 30 in the radial direction is configured to form the vent channel 80.

[0036] Specifically, one end of the vent tube 70 in the axial direction is supported on the protruding boss 53, and a gap is formed between the other end of the vent tube 70 in the axial direction and the transition connection portion 37, so that the vent tube 70 is limitedly fixed on the protruding boss 53 of the base body 52, and the gap is formed between the vent tube 70 and the transition connection portion 37 of the sleeve 30, which allows the airflow flowing in from the air passing gap to flow to the vent channel 80 between the vent tube 70 and the sleeve 30 after passing through the gap between the vent tube 70 and the transition connection portion 37, thereby ensuring smooth liquid feeding.

[0037] In some other embodiments, the vent tube 70 is fixedly sleeved on an inner wall of the sleeve 30, and a gap defining the vent channel 80 is formed between the vent tube 70 and the base body 52 in a radial direction. In this way, the vent tube 70 is mounted and fixed through the sleeve 30, and the vent channel 80 is formed by the gap between the vent tube 70 and the base body 52 in the radial direction, so as to ensure effective liquid feeding.

[0038] Specifically, a gap is formed between the vent tube 70 and each of the outer circumferential surface of the base body 52 and the protruding boss 53, and the protruding boss 53 will not be completely in contact with the vent tube 70 to block the vent channel 80. In addition, the protruding boss 53 may be configured to reduce the diameter of the vent channel 80, so as to facilitate forming the capillary effect when no liquid is fed.

[0039] In some other embodiments, a gap defining the vent channel 80 is formed between the vent tube 70 and each of the sleeve 30 and the base body 52 in a radial direction. In this way, the vent channels 80 can be formed on both an inner side and an outer side of the vent tube 70, and the diameter of the vent channel 80 is relatively small, which is more convenient to use the capillary effect to form a liquid film, thereby achieving better sealing effects when no liquid is fed.

[0040] Specifically, one end of the vent tube 70 in the axial direction is supported on the protruding boss 53, and a gap is formed between the other end of the vent tube 70 in the axial direction and the transition connection portion 37, so that when an external airflow flows to the vent tube 70, the external airflow is divided into two parts, one part of external airflow flows into the vent channel 80 between the vent tube 70 and the sleeve 30, and the other part of external airflow flows into the vent channel 80 between the vent tube 70 and the base body 52. In addition, because a gap is formed between the vent tube 70 and the transition connection portion 37, this part of airflow can still flow out between the protruding boss 53 and the vent tube 70, which is equivalent to that the vent tube 70 is movably supported on the protruding boss 53, and a flow space can be formed when the airflow flows through, which will not affect flowing of the airflow, thereby ensuring smooth liquid feeding.

[0041] Referring to FIG. 2 and FIG. 3, in still some other embodiments, a vent groove 523 extending in an axial direction of the vent tube 70 is provided on the base body 52. One part of the vent groove 523 is located inside the vent tube 70, and the other part of the vent groove 523 extends to be in communication with the through hole 521. The vent groove 523 is constructed to be the vent channel 80, so as to guide the external airflow to flow to the liquid inlet hole 32 through the through hole 521, thereby ensuring smooth liquid feeding. In other words, a part of the base body 52 is removed, and when the vent tube 70 is sleeved outside the base body 52, the vent channel 80 is directly defined between the vent tube 70 and the core body 54 inside the base body 52.

[0042] Specifically, one end of the vent groove 523 away from the through hole 521 is opened, which allows the external airflow to flow into the vent tube 70 and then directly enter the vent groove 523, thereby ensuring that the external airflow flows to the vent groove 523 smoothly.

[0043] Further, the vent tube 70 is sleeved on the base body 52 with zero gap or the vent tube 70 is in interference fit with the base body 52, and the vent tube 70 is sleeved on the sleeve 30 with zero gap or the vent tube 70 is in interference fit with the sleeve 30. The manner of mounting the vent tube 70, the base body 52, and the sleeve 30 is not limited herein.

[0044] In any one of the embodiments, the vent tube 70 is a fiberglass tube, so that it is very convenient to remove the outside wrapping process and use a fiberglass tube to assemble the atomization assembly. Moreover, the fiberglass tube can make the consistency of ventilation more stable. In addition, the aerosol-generation substrate in the liquid storage cavity 20 can be directly in contact with the atomization core 50 through the liquid inlet hole 32 on the sleeve 30, thereby improving the liquid guiding speed and stability. Further, optionally, the housing 10 has a suction nozzle, and the vent tube 70 is located at one end of the sleeve 30 adjacent to the suction nozzle, so as to form the vent channel 80 between the suction nozzle and the liquid inlet hole 32, which allows the external airflow to enter the vent channel 80 through the suction nozzle, thereby ensuring smoothness of liquid feeding.

[0045] Based on the same concept, according to an embodiment of the present invention, an electronic atomization device is provided, which includes the foregoing atomizer 100. The atomizer 100 includes a housing 10, a sleeve 30, and an atomization core 50. The sleeve 30 is arranged in the housing 10, a liquid storage cavity 20 is defined between the housing 10 and the sleeve 30, the atomization core 50 is assembled in the sleeve 30, and a liquid inlet hole 32 communicating the atomization core 50 and the liquid storage cavity 20 is provided on the sleeve 30. An aerosol-generation substrate in the liquid storage cavity 20 can directly flow to the atomization core 50 through the liquid inlet hole 32, so as to supply liquid to the atomization core 50.

[0046] In addition, the atomizer 100 further includes a vent tube 70. The vent tube 70 is sleeved between the sleeve 30 and the atomization core 50, and is spaced apart from at least one of the sleeve 30 or the atomization core 50 to form a vent channel 80. The vent channel 80 is configured to be in communication with the liquid inlet hole 32 and the outside. In this way, by arranging the vent tube 70 between the atomization core 50 and the sleeve 30, a gap between the vent tube 70 and at least one of the atomization core 50 or the sleeve 30 forms the vent channel 80. When the aerosol-generation substrate flows from the liquid storage cavity 20 to the atomization core 50, the external air can flow to the liquid inlet hole 32 and the liquid storage cavity 20 through the vent channel 80, so as to prevent formation of a negative pressure in the liquid storage cavity 20, and maintain the air pressure balance between the liquid storage cavity 20 and the outside atmosphere, thereby ensuring smooth liquid feeding.


Claims

1. An atomizer (100), comprising:

a housing (10);

an atomization assembly comprising a sleeve (30) and an atomization core (50), wherein the sleeve (30) is arranged in the housing (10), a liquid storage cavity (20) is defined between the housing (10) and the sleeve (30), the atomization core (50) is arranged in the sleeve (30), and a liquid inlet hole (32) communicating the atomization core (50) and the liquid storage cavity (20) is provided on the sleeve (30); and

a vent tube (70) sleeved between the sleeve (30) and the atomization core (50), the vent tube (70) being spaced apart from at least one of the sleeve (30) or the atomization core (50) to form a vent channel (80), wherein the vent channel (80) is configured to be in communication with the liquid inlet hole (32) and an outside.


 
2. The atomizer (100) according to claim 1, wherein a size of the vent channel (80) ranges from 0.05 mm to 0.15 mm.
 
3. The atomizer (100) according to claim 1, wherein the atomization core (50) comprises a base body (52) and a core body (54), the base body (52) is arranged in the sleeve (30), and the core body (54) is at least partially mounted on the base body (52),
wherein a through hole (521) communicating the liquid inlet hole (32) and the core body (54) is provided on the base body (52); the vent tube (70) is sleeved between the base body (52) and the sleeve (30), and the vent tube (70) is spaced apart from at least one of the base body (52) or the sleeve (30) to form the vent channel (80).
 
4. The atomizer (100) according to claim 3, wherein the vent tube (70) is fixedly sleeved on the base body (52), and a gap is formed between the vent tube (70) and the sleeve (30) in a radial direction so as to define the vent channel (80).
 
5. The atomizer (100) according to claim 3, wherein the vent tube (70) is fixedly sleeved on an inner wall of the sleeve (30), and a gap is formed between the vent tube (70) and the base body (52) in a radial direction so as to define the vent channel (80).
 
6. The atomizer (100) according to claim 3, wherein a gap is formed between the vent tube (70) and each of the sleeve (30) and the base body (52) in a radial direction so as to define the vent channel (80).
 
7. The atomizer (100) according to claim 3, wherein a vent groove (523) extending in an axial direction of the vent tube (70) is provided on the base body (52), one part of the vent groove (523) is located inside the vent tube (70), the other part of the vent groove (523) extends to be in communication with the through hole (521), and the vent groove (523) comprises the vent channel (80).
 
8. The atomizer (100) according to any one of claims 4 to 7, wherein the sleeve (30) comprises a first tube section (33) and a second tube section (35) connected to each other, a diameter of the first tube section (33) is greater than a diameter of the second tube section (35), and both the atomization core (50) and the vent tube (70) are sleeved in the first tube section (33);
wherein the core body (54) is internally provided with a run-through hole, the run-through hole is in communication with an interior of the second tube section (35), and the run-through hole and the second tube section (35) are combined to form an airflow channel; the second tube section (35) has a transition connection portion (37) connected to the first tube section (33), an air passing gap is formed between the transition connection portion (37) and the atomization core (50), and the air passing gap is in communication with the airflow channel and the vent channel (80).
 
9. The atomizer (100) according to claim 8, wherein a protruding boss (53) is formed on an outer circumferential surface of the base body (52), and the vent tube (70) is sleeved outside the base body (52) and located between the transition connection portion (37) and the protruding boss (53).
 
10. The atomizer (100) according to claim 9, wherein one end of the vent tube (70) in the axial direction is supported on the protruding boss (53), and a gap is formed between the other end of the vent tube (70) in the axial direction and the transition connection portion (37);

a gap is formed between the vent tube (70) and each of the base body (52) and the sleeve (30) in the radial direction, or

the vent tube (70) is fixedly sleeved on the base body (52), and a gap is formed between the vent tube (70) and the sleeve (30) in the radial direction.


 
11. The atomizer (100) according to claim 9, wherein the vent tube (70) is fixedly sleeved on an inner wall of the sleeve (30), and a gap is formed between the vent tube (70) and each of an outer circumferential surface of the base body (52) and the protruding boss (53).
 
12. The atomizer (100) according to any one of claims 1 to 7, wherein the vent tube (70) is a fiberglass tube.
 
13. An electronic atomization device, comprising the atomizer (100) according to any one of claims 1 to 12.
 




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