CN211832828U

CN211832828U - Electronic atomization device and atomizer thereof

Info

Publication number: CN211832828U
Application number: CN201922383036.3U
Authority: CN
Inventors: 何丹充; 沈丕发
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-11-03
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses an electronic atomization device and an atomizer thereof, wherein the atomizer comprises a liquid storage cavity for storing liquid; the air exchange channel is used for communicating the liquid storage cavity with the outside; the ventilation channel includes: an air inlet communicated with the outside; a cavity communicated with the air inlet; the air exchange groove is communicated with the cavity and the liquid storage cavity; wherein, the cavity is annular or a part of the annular, and one end of the cavity close to the ventilation groove has capillary force. Through this passageway of taking a breath to the realization is linked together the stock solution chamber with the external world, for stock solution chamber tonifying qi, realizes gas-liquid balance, makes the stock solution chamber lower liquid more unobstructed. Meanwhile, the liquid locking under the shelving state and the leaked liquid recovery under the suction state are realized.

Description

Electronic atomization device and atomizer thereof

Technical Field

The utility model relates to an atomizing device especially relates to an electronic atomizing device and atomizer thereof.

Background

The existing electronic cigarette has the following common problems: when the tobacco liquid atomizing speed is high, the air pressure of the oil cavity is reduced because the air return of the liquid storage cavity is not timely, the liquid is difficult to flow out, the liquid supply is not smooth, the tobacco liquid cannot be quickly supplemented to the atomizing element, the atomizing element is overheated due to dry burning, the atomizing element is damaged, the scorched smell is generated, and harmful substances are generated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing an electronic atomization device and atomizer thereof.

The utility model provides a technical scheme that its technical problem adopted is: constructing an atomizer comprising:

the liquid storage cavity is used for storing liquid;

the air exchange channel is used for communicating the liquid storage cavity with the outside; the ventilation channel includes:

an air inlet communicated with the outside;

a cavity communicated with the air inlet;

the air exchange groove is communicated with the cavity and the liquid storage cavity;

the cavity is annular or a part of the annular, and one end of the cavity, which is close to the ventilation groove, has capillary force.

Preferably, in the atomizer of the present invention, when the liquid in the liquid storage chamber overflows to the cavity, the cavity is close to one end of the ventilation groove and locks the liquid by capillary force.

Preferably, in the atomizer of the present invention, the atomizer further includes an atomizing core, and the cavity surrounds or partially surrounds the atomizing core.

Preferably, in the atomizer of the present invention, the cavity is gradually narrowed toward the ventilation groove.

Preferably, in the atomizer of the present invention, a longitudinal cross section of the cavity has an inverted V-shape.

Preferably, in the atomizer of the present invention, the atomizer further includes an atomizing base and a housing sleeved on the atomizing base, and the cavity is defined by the inner wall of the housing and a part of the outer wall of the atomizing base.

Preferably, in the atomizer of the present invention, the atomizing base includes a lower base body and an upper base body embedded on the lower base body, and the liquid storage cavity is defined between the upper base body and the housing;

the upper seat body comprises an outer peripheral surface, and the shell comprises an inner peripheral surface corresponding to the upper seat body;

the ventilation channel comprises a cavity defined by the outer peripheral surface of the upper base body and the inner peripheral surface of the shell, at least one ventilation groove formed in the upper base body or the shell, and at least one air inlet formed in the shell.

Preferably, in the atomizer of the present invention, the upper portion of the upper base body includes an inverted circular truncated cone-shaped outer peripheral surface, the housing includes a cylindrical inner peripheral surface, and the middle portion of the upper base body is provided with an annular boss;

the top of the outer peripheral surface of the inverted circular truncated cone and the outer peripheral surface of the boss are respectively abutted against the inner peripheral surface of the cylinder to form the cavity with a longitudinal cross section being narrow at the top and wide at the bottom.

Preferably, in the atomizer of the present invention, the ventilation groove is provided on the upper base or the housing at a position where the top of the inverted truncated cone-shaped outer peripheral surface abuts against the cylindrical inner peripheral surface.

Preferably, in the atomizer of the present invention, the groove depth of the ventilation groove gradually decreases toward the cavity.

Preferably, in the atomizer of the present invention, the upper base body is made of a soft material.

Preferably, in the atomizer of the present invention, the air inlet and the air exchanging groove are vertically disposed and circumferentially staggered.

Preferably, in the atomizer of the present invention, the air inlet and the air exchanging groove are disposed opposite to each other in the circumferential direction.

Preferably, in the atomizer of the present invention, the air inlet of the housing corresponds to the boss, and an air inlet groove communicated with the air inlet and the cavity is formed at the boss.

Preferably, in the atomizer of the present invention, the atomizer further includes an atomizing assembly and an air outlet pipe; the atomization component is embedded in the upper seat body and is connected and communicated with the air outlet pipeline.

The utility model also constructs an electron atomizing device, include:

a liquid storage cavity;

an air inlet communicated with the outside;

a cavity communicated with the air inlet;

Preferably, in the electronic atomization device of the present invention, when the liquid in the liquid storage chamber overflows to the cavity, the cavity is close to one end of the ventilation groove and locks the liquid by capillary force.

Preferably, in the electronic atomization device of the present invention, the electronic atomization device further includes an atomization core, and the cavity surrounds or partially surrounds the atomization core.

Preferably, in the electronic atomizer of the present invention, the cavity is gradually narrowed toward the air exchanging groove.

Preferably, in the electronic atomizer of the present invention, the longitudinal cross section of the cavity has an inverted V-shape.

Preferably, in the electronic atomization device of the present invention, the atomizer further includes an atomization seat and a housing sleeved on the atomization seat, and the cavity is defined by the inner wall of the housing and a part of the outer wall of the atomization seat.

Preferably, in the electronic atomizer of the present invention, the groove depth of the ventilation groove is gradually reduced toward the cavity.

Through implementing the utility model discloses, following beneficial effect has:

the utility model discloses a design a passageway of taking a breath, include: an air inlet communicated with the outside; a cavity communicated with the air inlet; the air exchange groove is communicated with the cavity and the liquid storage cavity, so that the liquid storage cavity is communicated with the outside, air is supplied to the liquid storage cavity, air-liquid balance is realized, and liquid discharging of the liquid storage cavity is smoother. And the cavity is annular or a part of the annular, and one end of the cavity close to the air exchange groove has capillary force, so that liquid locking in a resting state and leakage recovery in a suction state are realized.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of an atomizer according to a first embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the atomizer shown in FIG. 1;

FIG. 3 is a schematic perspective exploded view of the atomizer of FIG. 1;

FIG. 4 is a schematic perspective exploded view of an atomizing base assembly of the atomizer of FIG. 3;

fig. 5 is a schematic perspective view of the upper base shown in fig. 4;

fig. 6 is a schematic perspective view of the upper housing shown in fig. 4 from another angle;

FIG. 7 is a schematic perspective longitudinal sectional view of the atomizer shown in FIG. 1;

fig. 8a-8c are enlarged views of the cavity and the aeration tank of the atomizer shown in fig. 2 in longitudinal section.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be understood that the orientations and positional relationships indicated by the terms "upper", "lower", "top", "bottom", and the like are constructed and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the technical solution, but do not indicate that the indicated device or element must have a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1 and 2 show an atomizer according to a first embodiment of the present invention, which may form an electronic atomizer together with a battery device for providing atomization to liquid media such as tobacco smoke or liquid medicine. The atomizer comprises a liquid storage cavity 4 for storing liquid and a ventilation channel for communicating the liquid storage cavity 4 with the outside. This ventilation channel includes: the air inlet 63 that is linked together with the external world, the cavity 61 that communicates with the air inlet 63 and the groove of taking a breath of intercommunication cavity 61 and stock solution chamber 4 realize being linked together stock solution chamber and external world through this passageway of taking a breath, for stock solution chamber tonifying qi, realize gas-liquid balance, make the stock solution chamber lower liquid more unobstructed.

In some embodiments, the cavity 61 is a ring or a part of a ring, one end of the cavity 61 close to the air exchanging groove 62 has a capillary force, when the liquid in the liquid storage cavity 4 overflows to the cavity 61, one end of the cavity 61 close to the air exchanging groove 62 locks the liquid through the capillary force, so that the liquid locking in the resting state is realized, and meanwhile, the leaked liquid in one end of the cavity 61 close to the air exchanging groove 62 in the suction state is recycled.

And the atomizer also comprises the atomizing core 20, the cavity 61 can be a closed loop or a section or a subsection of an annular shape, and the cavity 61 surrounds or partially surrounds the atomizing core 20, so that the space is fully utilized. In this embodiment, the cavity 61 is a closed loop.

In the present embodiment, the cavity 61 is gradually narrowed toward the ventilation slot 62, so that one end of the cavity 61 close to the ventilation slot 62 has capillary force. Also, the longitudinal cross-section of the cavity 61 is preferably inverted V-shaped.

The atomizer in the present embodiment may comprise an atomizing base 1 for mechanically and electrically connecting with a battery device, an atomizing assembly 2 mounted in the atomizing base 1, and a housing 3 sleeved on the atomizing base 1. Wherein, a liquid storage cavity 4 for storing liquid media is defined between the atomizing base 1 and the shell 3. Atomization component 2 is connected with the liquid storage cavity 4 drain to and atomizing seat 1 between be defined with the atomizing chamber, this atomizing chamber is used for heating atomizing medium and outside air mix behind the circular telegram with atomization component 2.

In the present embodiment, the cavity 61 is enclosed by the inner wall of the housing 3 and a part of the outer wall of the atomizing base 1. In other embodiments, the cavity 61 may also be formed inside the atomizing base 1, the atomizing base 1 and the housing 3 are closely sleeved to form an air inlet 63 communicated with the cavity 61, and the top of the atomizing base 1 is provided with a ventilation slot 62 communicated with the liquid storage cavity 4.

Referring to fig. 3 and 4 together, the atomizing base 1 in this embodiment includes a lower base 10 for mechanically and electrically connecting with the battery device, and an upper base 11 embedded on the top of the lower base 10, wherein the upper base 11 is used for carrying the atomizing assembly 2. Casing 3 cup joints on last pedestal 11 and lower pedestal 10, defines out stock solution chamber 4 and the passageway of taking a breath between casing 3 and the last pedestal 11, and the joint cooperation between casing 3 and the lower pedestal 10.

As shown in fig. 2 and 7, in particular, the upper seat 11 includes an outer peripheral surface, the housing 3 includes an inner peripheral surface corresponding to the upper seat 11, the ventilation channel includes a cavity 61 defined by the outer peripheral surface of the upper seat 11 and the inner peripheral surface of the housing 3, at least one ventilation slot 62 formed on the upper seat 11 or the housing 3, and at least one air inlet 63 formed on the housing 3. Wherein, the air exchanging groove 62 is communicated with the liquid storage cavity 4 and the cavity 61, and the air inlet 63 is communicated with the cavity 61 and the outside.

When a user sucks, the air pressure in the atomizing cavity is negative pressure, the air enters the atomizing cavity from the air inlet channel 100, and the control circuit starts the heating sheet to atomize the liquid medium adsorbed in the porous ceramic body. The liquid medium of the porous ceramic body is reduced, and under the action of capillary force, the porous ceramic body sucks oil liquid from the liquid storage cavity 4 and continues to atomize. The liquid medium of stock solution chamber 4 reduces, and the gas space increases, and too big negative pressure appears in stock solution chamber 4 atmospheric pressure, and the air enters into cavity 61 from the air inlet 63 of shell, then gets into stock solution chamber 4 through the groove 62 that breathes in, realizes gas-liquid balance to let the speed of lower liquid and liquid medium by atomizing speed looks adaptation.

As shown in fig. 5, 6 and 7, in the present embodiment, the upper portion of the upper seat 11 includes an inverted circular truncated cone-shaped outer peripheral surface, the housing 3 includes a cylindrical inner peripheral surface, the middle portion of the upper seat 11 is provided with an annular boss 116, the top of the inverted circular truncated cone-shaped outer peripheral surface and the outer peripheral surface of the boss 116 are respectively abutted against the cylindrical inner peripheral surface to form a cavity 61 gradually narrowing toward the ventilation slot 62, and the longitudinal cross section of the cavity is narrow at the top and wide at the bottom.

Referring to fig. 8a-8c, the liquid stored in the liquid storage chamber 4 entering the cavity 61 through the air exchange groove 62 is absorbed on the top of the inverted V shape due to the capillary force, so as to be stored in the cavity 61. When the user sucks, the liquid in the reservoir chamber 4 is reduced, the air pressure is reduced, and the tobacco tar adsorbed on the top of the inverted V shape flows back into the reservoir chamber 4 from the ventilation groove 62. The inverted V-shaped structure design can prevent the tobacco tar from flowing out of the shell on one hand, and on the other hand, the tobacco tar at the bottom of the cavity 61 can also flow back to the liquid storage cavity 4 along the inverted V-shaped structure. Wherein, a in fig. 8a-8c is the adsorption amount of the tobacco juice adsorbed on the top of the inverted V shape under different conditions, specifically:

fig. 8a shows that when the liquid storage chamber 4 is at the same internal pressure as the external pressure in the resting state, the smoke oil forms an oil film at the air exchange groove 62 to generate tension, so as to lock the liquid, and the liquid is in a vapor-liquid equilibrium state.

Fig. 8b shows that when the external environment changes, for example, external negative pressure occurs, and the internal pressure of the liquid storage chamber 4 is greater than the external pressure in the resting state, the liquid smoke further leaks from the ventilation groove 62 to the cavity 61, and the cavity 61 is in an inverted V-shaped structure, so that the liquid smoke is drawn by the maximum capillary force and the maximum tension at the top gap of the cavity 61, thereby achieving the liquid locking function. And the capillary force and the tension which go downwards are smaller to draw the tobacco tar until the tension is cut off, and then a small part of tobacco juice can be retained on the boss 116, so that the tobacco juice is prevented from flowing out of the air inlet 63 through the boss 116.

Fig. 8c is that when the suction state, the liquid medium of stock solution chamber 4 reduces, and the gas space increases, and too big negative pressure appears in stock solution chamber 4 atmospheric pressure, and when stock solution chamber 4 internal pressure was less than ambient pressure, thereby ambient pressure broke through the tension of the tobacco tar of gas exchange groove 62 department and make outside air get into stock solution chamber 4, the operation of taking a breath is accomplished. Meanwhile, the tobacco tar adsorbed on the top of the inverted V shape can be squeezed back to the liquid storage cavity 4, so that the leaked liquid can be recycled.

In some embodiments, the ventilation groove 62 is opened on the upper housing 11 or the housing 3 where the top of the outer peripheral surface of the inverted circular truncated cone abuts against the inner peripheral surface of the cylindrical shape. In the present embodiment, the ventilation groove 62 is opened in the upper seat body 11 where the top of the outer peripheral surface of the inverted circular truncated cone abuts against the inner peripheral surface of the cylindrical shape. The ventilation groove 62 is provided so that the groove depth gradually decreases toward the cavity 61, and the ventilation groove 61 is sufficiently small to have a capillary force. Preferably, the size of the opening at the top of the aeration tank 61 is 1.0mm by 0.3 mm.

In some embodiments, the air inlet 63 and the air exchanging groove 62 are arranged up and down and are staggered in the circumferential direction. Preferably, in the present embodiment, in order to further prevent the smoke liquid from flowing out of the air inlet 63, the air inlet 63 and the ventilation groove 62 are arranged opposite to each other in the circumferential direction, and the liquid medium enters the ventilation groove 62 and flows out of the air inlet 63, and a half-cycle distance is required for flowing, so that the smoke liquid can be prevented from flowing out to the maximum extent.

In this embodiment, the atomizer further includes at least one locking hole formed in the housing 3, at least one locking portion 118 disposed on the atomizing base 1 and engaged with the locking hole, and a ventilation channel communicated with the liquid storage chamber 4; the ventilation channel is also communicated with the outside through at least one clamping hole. In addition, an air inlet gap can be formed between the fastening hole and the fastening portion 118, and the ventilation channel is communicated with the outside through the air inlet gap.

The utility model discloses in, the air inlet 63 of this passageway of taking a breath can be regarded as in the card hole to reduce trompil on the casing, promote the aesthetic feeling, improve user experience.

When the housing 3 is sleeved on the lower seat 10, the clamping portion 118 of the lower seat 10 is clamped on the air inlet 63 to form an air inlet gap, and the air inlet gap is communicated with the cavity 61. In the present embodiment, when the boss 116 is opposite to the air inlet 63, an air inlet groove 62 communicating with the cavity 61 may be formed at the boss 116, and the air inlet groove 62 communicates with the air inlet 63 or the air inlet gap.

In addition, referring to fig. 3 and 4, in the present embodiment, the lower seat 10 is provided with an air inlet passage 100 communicating with the outside. The lower housing 10 includes a cylindrical housing having an inner cavity for receiving the lower portion of the upper housing 11. In this embodiment, the inner cavity of the lower seat 10 is divided by a vertically installed partition plate 101, the two side wall surfaces of the partition plate 101 are respectively provided with positive and negative pole pieces penetrating through the bottom wall of the lower seat 10, and the lower portion of the upper seat 11 has a cross-shaped groove. The first groove 119 is inserted into and matched with the partition 101 to clamp the upper seat 11 on the lower seat 10. The air inlet passage 100 may include a pair of air inlets formed on the sidewalls of the lower housing 10 and a cavity formed between the second groove 120 and the inner cavity of the lower housing 10 when the upper housing 11 is embedded in the lower housing 10.

In this embodiment, the atomizing assembly 2 is supported in the upper housing 11. The upper seat body 11 may be an inverted circular truncated cone with an inner cavity, and a supporting portion 121 for supporting the bottom edge of the atomizing assembly 2 is disposed at the upper portion of the inner cavity of the upper seat body 11. The upper base body 11 may include a bottom wall 110, at least one air inlet hole 111 penetrating through the bottom wall 110 near an edge, an air flow collecting cavity 112 disposed in the middle of the bottom wall 110 for collecting and guiding out a mixture of air and mist overflowing from the atomizing surface, and a flow guide channel 113 extending from the air inlet hole 111 along an inner wall surface of the upper base body 11 for a distance and communicating with the air flow collecting cavity 112. Wherein, the air inlet hole 111 is communicated with the second groove 120 at the lower part of the upper seat body 11, thereby communicating with the air inlet channel 100.

As shown in fig. 5 and 6, in some embodiments, the bottom wall 110 of the upper seat 11 is provided with a section of arc-shaped wall 114 extending from the inner wall surface of the upper seat 11 to the middle of the bottom wall along the inward common tangential direction of the air inlet 111, a flow guiding channel 113 is defined between the arc-shaped wall 114 and the inner wall surface of the upper seat 11, and the flow guiding channel 113 corresponds to the atomizing surface of the atomizing assembly 2, so that the mist overflowing from the atomizing surface is mixed with the air from the outside through the flow guiding channel 113, and thus the flow guiding channel 113 forms the atomizing chamber of the atomizer. And, an airflow collecting chamber 112 having a diversion opening 115 is formed between the wall bodies 114 at the middle of the bottom wall, and the diversion passage 113 is communicated with the airflow collecting chamber 112 through the diversion opening 115. In some embodiments, there is a gap between the wall 114 at the air inlet hole 111 and the atomization surface, so as to avoid the contact between the atomization surface and the wall 114 and the overheating of the wall 114.

In this embodiment, the upper housing 11 includes two opposite air inlets 111 penetrating the edge of the bottom wall 110, and extends from the inner wall surface of the upper housing 11 to the central circle of the bottom wall 110 along the internal common tangential direction of the air inlets 111 to form two segments of arc-shaped walls 114, two flow guiding channels 113 are defined between the two segments of arc-shaped walls 114 and the inner wall surface of the upper housing 11, and the two segments of arc-shaped walls 114 form a cylindrical air flow converging cavity 112 with two opposite flow guiding ports 115 around the central circumference of the bottom wall 110. In some embodiments, the upper housing 11 is made of soft material such as silicon, and the lower housing 10 is made of hard material such as metal or plastic.

Referring to fig. 2 and fig. 7 together, the atomizing assembly 2 in this embodiment may include an atomizing core 20 supported in the upper seat 11, a first air outlet channel 21 longitudinally penetrating through the atomizing core 20, and a heat generating plate 22 disposed at the bottom of the atomizing core 20. In this embodiment, the first air outlet channel 21 in the atomizing core 20 is connected to the air flow collecting cavity 112 in an air guiding manner, the atomizing core 20 is an annular porous ceramic body, and is supported on the supporting portion 121 at the upper portion of the inner cavity of the upper seat body 11, the bottom of the atomizing core 20 that is not in contact with the upper seat body 11 is provided with an annular heat generating sheet, the annular heat generating sheet penetrates through the bottom wall 110 of the upper seat body 11 through a connecting pipe, and is electrically connected to the positive and negative plates on the lower seat body 10, and the positive and negative plates are connected to an external power supply device to generate heat, so as to atomize the liquid medium.

As shown in the figure, in the present embodiment, the housing 3 is sleeved on the upper seat 11 and the lower seat 10, the liquid storage cavity 4 is defined between the housing 3 and the upper seat 11, and the housing 3 is engaged with the lower seat 10. In this embodiment, a clamping portion 118 is disposed on a side wall of the lower seat 10, and cooperates with a clamping hole on the housing 3, so as to fix the housing 3 on the lower seat 10 in a sleeved manner, and in this embodiment, the clamping hole may be the air inlet 63. And a second air outlet channel 30 which is connected with the first air outlet channel 21 of the atomizing assembly 2 in an air guiding way is also arranged in the shell 3, and the two air outlet channels form a complete air outlet channel. The utility model discloses a flue gas transfer passage collects chamber 112, first air outlet channel 21 and second air outlet channel 30 including inlet channel 100, inlet port 111, water conservancy diversion passageway 113, the air current that communicates according to the preface.

In the present embodiment, the atomizer may further include a sealing member 5, and one end of the sealing member 5 is embedded in the first air outlet channel 21 of the atomizing assembly 2, abuts against the wall body 114 at the middle portion of the bottom wall 110 of the upper seat 11, i.e. abuts against the wall body 114 forming the air flow collecting cavity 112, and is communicated with the air flow collecting cavity 112. The other end of the sealant 5 is sleeved on the top of the atomizing core 20, is inserted into the second air outlet channel 30 of the housing 3 for air guiding connection, and defines a liquid suction groove 51 with the inner wall surface of the upper seat 11, and the atomizing core 20 sucks the liquid medium in the liquid storage cavity 4 through the liquid suction groove 51. In some embodiments, the seal 5 is a soft material.

Through implementing the utility model discloses, during the user's suction, can make the air follow the inlet port and enter the back, through one section distance back of water conservancy diversion passageway guide air current flow along the atomizing face, collect the air with the mixture of the fog that overflows from the atomizing face and collect the chamber at the air current, then derive to furthest takes the fog out, increases the smog volume that every take out a mouthful of cigarette and bring, improves the satisfaction of suction person.

And, this application guides the air current to flow a section distance back along the atomizing face through the water conservancy diversion passageway, with the air with from the atomizing face after the fog intensive mixing that overflows, collect and collect the chamber at the air current, then derive, can also furthest reduce the formation of condensate, avoid the user to inhale the condensate, promote user's experience.

In a second embodiment, the present invention further provides an electronic atomizer integrated with a battery device, all the above embodiments are applicable to the embodiment of the electronic atomizer integrated with the battery device, and the electronic atomizer includes all the above implementation manners related to the atomizer, which is not repeated herein.

The present invention has been described in terms of specific embodiments, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. An atomizer, comprising:

a liquid storage cavity (4) for storing liquid;

the air exchange channel is used for communicating the liquid storage cavity (4) with the outside; characterized in that the ventilation channel comprises:

an air inlet (63) communicating with the outside;

a cavity (61) communicating with the air inlet (63);

the air exchange groove (62) is communicated with the cavity (61) and the liquid storage cavity (4);

wherein the cavity (61) is annular or a part of annular, and one end of the cavity (61) close to the ventilation groove (62) has capillary force.

2. A nebulizer as claimed in claim 1, wherein when liquid in the reservoir (4) overflows into the cavity (61), the end of the cavity (61) near the venting groove (62) captures the liquid by capillary force.

3. A nebulizer as claimed in claim 1, further comprising a nebulizing core (20), the cavity (61) surrounding or partially surrounding the nebulizing core (20).

4. Atomiser according to claim 1, characterised in that the cavity (61) narrows in the direction of the air exchange groove (62).

5. Atomiser according to claim 4, characterised in that the cavity (61) is of inverted V-shaped longitudinal cross-section.

6. Atomiser according to claim 1, characterised in that it further comprises an atomising seat (1) and a housing (3) which is sleeved on the atomising seat (1), the cavity (61) being enclosed by an inner wall of the housing (3) and part of an outer wall of the atomising seat (1).

7. The atomizer according to claim 6, wherein the atomizing base (1) comprises a lower base (10) and an upper base (11) embedded on the lower base (10), the upper base (11) and the housing (3) defining the reservoir (4) therebetween;

the upper seat body (11) comprises an outer peripheral surface, and the shell (3) comprises an inner peripheral surface corresponding to the upper seat body (11);

the ventilation channel comprises a cavity (61) defined by the outer peripheral surface of the upper base body (11) and the inner peripheral surface of the shell (3), at least one ventilation groove (62) formed in the upper base body (11) or the shell (3), and at least one air inlet (63) formed in the shell (3).

8. A nebulizer as claimed in claim 7, characterised in that the upper part of the upper seat (11) comprises an inverted truncated-cone-shaped outer peripheral surface, the housing (3) comprises a cylindrical inner peripheral surface, and the middle part of the upper seat (11) is provided with an annular boss (116);

the top of the outer peripheral surface of the inverted circular truncated cone and the outer peripheral surface of the boss (116) are respectively abutted against the inner peripheral surface of the cylinder to form the cavity (61) gradually narrowing towards the direction of the ventilation groove (62).

9. A nebulizer as claimed in claim 8, wherein the scavenging groove (62) opens on the upper seat (11) or the housing (3) where the top of the outer peripheral surface of the rounded frustum shape abuts against the inner peripheral surface of the cylindrical shape.

10. Atomiser according to claim 1, characterised in that the groove depth of the deaeration groove (62) is arranged to decrease towards the cavity (61).

11. Atomiser according to claim 7, characterised in that the upper body (11) is of a soft material.

12. Atomiser according to claim 1, characterised in that the air inlet (63) is arranged above and below the air exchange groove (62) and is offset in the circumferential direction.

13. Atomiser according to claim 12, characterised in that the air inlet (63) is arranged circumferentially opposite the air exchange groove (62).

14. A nebulizer as claimed in claim 8, wherein the boss (116) of the housing (3) corresponding to the air inlet (63) is provided with an air inlet slot (117) communicating with the air inlet (63) and the cavity (61).

15. Atomiser according to claim 7, characterised in that it further comprises an atomising assembly (2) and an air outlet conduit; the atomization component (2) is embedded in the upper seat body (11) and is communicated with the air outlet pipeline.

16. An electronic atomization device comprising:

a liquid storage cavity (4) for storing liquid;

an air inlet (63) communicating with the outside;

a cavity (61) communicating with the air inlet (63);

17. The electronic atomizer device according to claim 16, wherein when the liquid in the reservoir (4) overflows into the cavity (61), an end of the cavity (61) near the air exchange groove (62) holds the liquid by capillary force.

18. The electronic atomization device of claim 16 further comprising an atomization core (20), wherein the cavity (61) surrounds or partially surrounds the atomization core (20).

19. Electronic atomisation device according to claim 16, characterised in that the cavity (61) narrows towards the degassing channel (62).

20. Electronic atomisation device according to claim 19 characterised in that the longitudinal cross section of the cavity (61) is inverted V-shaped.

21. The electronic atomization device of claim 16, further comprising an atomization seat (1) and a housing (3) sleeved on the atomization seat (1), wherein the cavity (61) is enclosed by an inner wall of the housing (3) and a part of an outer wall of the atomization seat (1).

22. Electronic atomisation device according to claim 16, characterised in that the groove depth of the aeration groove (62) is arranged to decrease towards the cavity (61).