WO2022100170A1

WO2022100170A1 - Air intake liquid blocking structure, atomizer, and aerosol generating device

Info

Publication number: WO2022100170A1
Application number: PCT/CN2021/111978
Authority: WO
Inventors: 邱伟华
Original assignee: 常州市派腾电子技术服务有限公司
Priority date: 2020-11-13
Filing date: 2021-08-11
Publication date: 2022-05-19
Also published as: CN214414097U; EP4245167A1; US20240000152A1

Abstract

The utility model provides an air intake liquid blocking structure, an atomizer, and an aerosol generating device, the air intake liquid blocking structure comprising an outer sleeve and an air intake liquid blocking member. The air intake liquid blocking member comprises an air intake tube and at least two liquid blocking rib groups; the air intake tube comprises an open end, a closed end, and an outer peripheral wall; the open end is provided with an air intake hole; the outer peripheral wall is provided with air guide holes; each liquid blocking rib group comprises at least one liquid blocking section arranged along the circumferential direction; at least one liquid dropping notch is defined between liquid blocking sections located on the same circumference; and the projections of liquid dropping notches in adjacent liquid blocking rib groups along the axial direction of the air intake tube are staggered from each other and communicated with each other along the axial direction of the air intake tube to form liquid dropping passages. In the present utility model, by providing the liquid blocking rib groups and defining a plurality of liquid dropping passages between the liquid blocking rib groups, the liquid entering the outer sleeve from an atomization cavity can be absorbed by the liquid blocking rib groups, thereby preventing affecting the service life of a power supply device due to liquid leakage to the power supply device.

Description

[Correction 24.09.2021 according to Rule 91] Air intake liquid blocking structure, atomizer and aerosol generating device

technical field

The utility model relates to an aerosol generating device, in particular to an air intake liquid blocking structure, an atomizer and an aerosol cavity generating device.

Background technique

The aerosol generating device usually includes an atomizer and a power supply device that is electrically connected to the atomizer. The atomizer can heat and atomize the aerosol-forming substrate stored in it under the electric drive of the power supply device for the user to use. Suck.

At present, the aerosol-forming matrix and/or the formed condensate in the atomizing cavity of the atomizer easily leak to the power supply device through the air inlet, so that the leaked liquid easily affects the service life of the power supply device after long-term use. Even reduce the safety performance of the aerosol generating device.

Utility model content

Based on this, it is necessary to provide an air-intake and liquid-blocking structure that avoids the leakage of the aerosol-forming matrix in the atomizer.

It is also necessary to provide an atomizer with the above-mentioned air-intake and liquid-blocking structure.

It is more necessary to provide an aerosol generating device having the above-mentioned atomizer.

An air intake liquid blocking structure, comprising:

an outer sleeve, which has an air outlet end facing the atomizing assembly; the air outlet end is provided with an air outlet communicating with the atomizing cavity in the atomizing assembly; and

The air intake liquid blocking member is sleeved in the outer casing; the air intake liquid blocking member includes an intake pipe and at least two sets of liquid blocking ribs; the intake pipe includes an open end and a closed end arranged along its own axial direction, and a peripheral wall connected between the open end and the closed end;

The open end is provided with an air intake hole that communicates between the outside and the inner cavity of the air intake pipe, and the outer peripheral wall is provided with an air guide hole that communicates between the inner cavity of the air intake pipe and the air outlet hole;

Wherein, all the liquid blocking rib groups are axially spaced along the air inlet pipe, and each group of the liquid blocking rib groups includes at least one liquid blocking section protruding radially along the air inlet pipe and arranged in the circumferential direction , at least one drip port is defined between the liquid blocking segments located on the same circumference; the drip ports in the adjacent liquid blocking rib groups are staggered along the axial projection of the air intake pipe, and are arranged along the The axial directions of the air intake pipes are communicated with each other to form a drip channel.

In one of the embodiments, the liquid dripping openings formed in a group of the liquid blocking rib groups adjacent to the air outlet holes and the projections of the air outlet holes along the axial direction of the air intake pipe are staggered from each other.

In one of the embodiments, a surface of the liquid blocking segment in a group of the liquid blocking rib groups adjacent to the gas outlet facing the gas outlet is a rough plane.

In one embodiment, the air outlet holes include a plurality of air outlet holes opened on the air outlet end, the closed end of the air intake pipe is facing the plurality of air outlet holes, and the projections of the plurality of air outlet holes are completely falls in the plane of the closed end.

In one embodiment, the air guide holes are disposed between the at least two groups of liquid blocking rib groups and the air intake holes, and include a plurality of air guide holes disposed along the circumferential direction of the air intake pipe.

In one embodiment, the outer sleeve is made of metal material, and the air outlet on the outer sleeve is facing the heating surface of the atomizer.

In one embodiment, a sealing flange is radially protruded from the outer peripheral wall of the air inlet pipe adjacent to the open end, and the outer sleeve is sealingly sleeved on the sealing flange and surrounds the air guide hole ;

Wherein, there is a space between the inner tube wall of the outer sleeve and the liquid blocking section in each group of the liquid blocking rib group to allow the pressure gas to flow into the atomization cavity, and prevent the fluid in the atomization cavity from flowing out to the outside Clearance.

An atomizer includes an atomization component with an atomization cavity and the above-mentioned air intake and liquid blocking structure.

In one embodiment, the atomization assembly includes a base forming the atomization cavity and an atomization core fitted in the atomization cavity, and the air intake and liquid blocking structure is fitted on the base and located below the atomizing core, the air outlet end of the outer sleeve with the air outlet hole extends into the atomizing cavity.

An aerosol generating device includes the above atomizer.

In the air intake and liquid blocking structure of the present invention, by arranging liquid blocking rib groups and defining a plurality of liquid drop channels between each liquid blocking rib group, the aerosol in the atomization chamber forms the matrix and/or the formed condensate part. After entering the outer casing through the air outlet, it can be absorbed by the liquid blocking rib group, thereby preventing the liquid from leaking to the power supply device through the air guide hole and the air inlet hole, which affects the service life of the power supply device.

Description of drawings

1 is a schematic structural diagram of an atomizer in an embodiment of the present invention;

Fig. 2 is the sectional view of the atomizer shown in Fig. 1;

Fig. 3 is the exploded schematic diagram of one angle of the air inlet liquid blocking structure in the atomizer shown in Fig. 1;

FIG. 4 is an exploded schematic view of another angle of the air intake and liquid blocking structure in the atomizer shown in FIG. 1 .

雾化器100Atomizer 100	雾化组件11 Atomization components 11
底座110 base 110	雾化芯112Atomizing Core 112
储液件13 reservoir 13	储液腔130 Liquid storage chamber 130
进气阻液结构15Air intake liquid blocking structure 15	外套管150 Outer casing 150
出气孔1501 Air vent 1501	进气阻液件152Intake liquid blocking member 152
进气管1521Intake pipe 1521	开口端1521a Open end 1521a
封闭端1521bClosed end 1521b	外周壁1521c Peripheral wall 1521c
凸缘1521d Flange 1521d
阻液筋组1523Liquid blocking rib set 1523	阻液段1523a Liquid blocking section 1523a
进气孔1525 Air intake 1525	导气孔1527 Air guide hole 1527
雾化腔aAtomizing chamber a	容液槽btank b

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 , an embodiment of the present invention provides an aerosol generating device. The aerosol generating device includes an atomizer 100 and a power supply device (not shown) electrically connected to the atomizer 100 . When in use, The power supply device is used for supplying electric power to the atomizer 100, thereby heating the aerosol-forming substrate stored in the atomizer 100, and the aerosol-forming substrate is atomized under heating to form smoke for the user to inhale.

Referring to FIG. 2 , the atomizer 100 includes an atomization assembly 11 , a liquid storage member 13 and an air intake liquid blocking structure 15 . Wherein, a liquid storage chamber 130 for storing the aerosol-forming substrate is formed in the liquid storage member 13, and the atomization assembly 11 is located in the direction of gravity of the aerosol-forming substrate in the liquid storage chamber 130, and is used for adsorption and atomization by the liquid storage chamber 130. The provided aerosol forms a matrix. The air intake and liquid blocking structure 15 is arranged in the atomization assembly 11 to provide airflow for the atomization of the atomization assembly 11, and at the same time absorb the aerosol flowing out of the atomization assembly 11 to form a matrix and/or condensate, so as to avoid aerosol Leaks that form matrix and/or condensate affect the life of the power supply unit.

The atomizing assembly 11 includes a base 110 and an atomizing core 112 . The base 110 is used to provide support for the installation of the atomizing core 112, and its inner cavity is hollow to form an atomizing cavity a. The liquid storage member 13 is connected to the base 110 , and the atomization core 112 is connected to the atomization chamber a and is located in the direction of gravity of the aerosol-forming matrix in the liquid storage chamber 130 . When in use, the aerosol-forming matrix in the liquid storage chamber 130 flows to the atomizing core 112. After absorbing the aerosol-forming matrix, the atomizing core 112 can heat the aerosol to form the matrix under the action of the electric energy provided by the power supply device to the atomizer 100. The substrate is atomized to form a smoke that is inhaled by the user's puffing action.

Please refer to FIG. 3 and FIG. 4 together, the air intake liquid blocking structure 15 includes an outer sleeve 150 and an air intake liquid blocking member 152 . One end of the outer sleeve 150 in the axial direction is open, and the other end in the axial direction is provided with an air outlet 1501 that communicates with the atomizing chamber a in the atomizing assembly 11 . That is to say, the end of the outer sleeve 150 facing the atomizing assembly 11 is semi-closed, which is defined as the outer sleeve 150 having an air outlet end facing the atomizing core 112 .

In this specific embodiment, the outer sleeve 150 is made of metal material, and the air outlet 1501 on the outer sleeve 150 faces the heating surface of the atomizing core 112 . It can be understood that the outer sleeve 150 can be integrated with the base 110 of the atomizer 100, or can be a separate part installed in the base 110 of the atomizer 100. The outer sleeve 150 is preferably a separate part and made of a metal material, because the outer sleeve The air outlet 1501 on the tube 150 is facing the heating surface of the atomizing core 112 , and the metal material can effectively prevent the outer sleeve 150 from being melted by high temperature and block the air outlet 1501 .

The air intake liquid blocking member 152 is sheathed in the outer sleeve 150 , and includes an air intake pipe 1521 and at least two sets of liquid blocking ribs 1523 . The intake pipe 1521 includes an open end 1521a and a closed end 1521b disposed along its own axial direction, and an outer peripheral wall 1521c connected between the open end 1521a and the closed end 1521b. The open end 1521a defines an air intake hole 1525 that communicates between the outside and the inner cavity of the air intake pipe 1521 , and the outer peripheral wall 1521c defines an air guide hole 1527 that communicates between the inner cavity of the air intake pipe 1521 and the air outlet hole 1501 .

In this specific embodiment, the air guide hole 1527 is disposed on one end of the air intake pipe 1521 close to the air intake hole 1525 , and is located between at least two liquid blocking rib groups 1523 and the air intake hole 1525 . The air guide holes 1527 include a plurality of air guide holes 1527 arranged along the circumferential direction of the air inlet pipe 1521 , so that the gas flowing in through the air inlet holes 1525 can flow out in a distributed manner along the plurality of air guide holes 1527 .

Meanwhile, a sealing flange 1521d protrudes radially on the outer peripheral wall of the air inlet pipe 1521 adjacent to the open end 1521a, and the outer sleeve 150 is sealingly sleeved on the sealing flange 1521d and surrounds the air guide hole 1527. That is to say, the sealing flange 1521d is formed between the open end 1521a of the air intake pipe 1521 and the air guide hole 1527 (that is, located below the air guide hole 1527), and the edge of the open end of the outer sleeve 150 is sealed and supported on the sealing flange 1521d, The air guide hole 1527 is enclosed in the lumen of the outer sleeve 150 . In this way, it is ensured that the tube end of the outer sleeve 150 and the air inlet tube 1521 are sealed to prevent the aerosol-forming matrix and/or the condensate from falling out of the atomization chamber a from flowing out from the gap between the two. The outside air enters the inner cavity of the air inlet pipe 1521 through the air inlet hole 1525 and can be drained into the gap between the outer sleeve 150 and the air inlet liquid blocking member 152 through the air guide hole 1527 .

All the liquid blocking rib groups 1523 are axially spaced along the air intake pipe 1521 . Each liquid blocking rib group 1523 includes at least one liquid blocking section 1523a protruding radially along the air inlet pipe 1521 and arranged in the circumferential direction. There is a gap between the inner wall of the outer sleeve 150 and the liquid blocking section 1523a in each liquid blocking rib group 1523 that allows the pressure gas to flow into the atomization chamber a and prevents the fluid in the atomization chamber a from flowing out to the outside. The gap forms an air inlet channel that communicates between the air guide hole 1527 and the air outlet hole 1501 . The external air enters from the air inlet hole 1525 and passes through the air guide hole 1527 of the outer peripheral wall 1521c, and reaches the air outlet hole of the outer sleeve 150 along the air inlet channel. After 1501, it flows into the atomizing chamber a, so as to be mixed with the smoke formed by heating under the suction effect of the user and for the user to inhale. At the same time, the above-mentioned gap can prevent the liquid from passing through and entering the next layer of liquid-blocking rib group 1523 (because the aerosol-forming matrix and/or the condensed liquid formed in the atomization chamber a has a certain viscosity relative to ordinary liquids, the above-mentioned gap is reasonably set. So that the liquid cannot pass through a large amount due to surface tension), so that the above-mentioned gap can prevent the leakage of the liquid while ensuring the air intake.

Specifically, at least one drip port O is defined between the liquid blocking segments 1523a located on the same circumference, and the liquid drip ports O in the adjacent liquid blocking rib groups 1523 are staggered along the axial projection of the air intake pipe 1521, and at the same time, when the inlet The drip ports O in the adjacent liquid blocking rib groups 1523 in the axial direction of the trachea 1521 communicate with each other to form a drip channel.

That is to say, all the liquid blocking rib groups 1523 are arranged layer by layer along the axial direction of the air intake pipe 1521, and any drip port O in the liquid blocking rib group 1523 on the upper layer and the liquid blocking rib group 1523 in the next layer The liquid blocking sections 1523a are all overlapping, so that the drip ports O in the adjacent liquid blocking rib groups 1523 are staggered in the axial direction of the air intake pipe 1521, that is, the adjacent liquid blocking rib groups 1523 in the axial direction of the air intake pipe 1521. The drip channel formed by the interconnection of the drip ports O is a curved channel rather than a straight channel.

In this specific embodiment, the liquid blocking rib group 1523 includes three groups arranged at intervals along the axial direction of the intake pipe 1521 , and each liquid blocking rib group 1523 includes four liquid blocking segments 1523 a arranged along the circumferential direction of the intake pipe 1521 , that is, each block 1523 a The liquid blocking rib group 1523 defines and forms four drip ports O, and the drip ports O in the three liquid blocking rib groups 1523 communicate with each other in the axial direction of the air inlet pipe 1521 to form a drip channel.

During use, the aerosol-forming matrix and/or the formed condensate in the atomizing chamber a enters the outer sleeve 150 through the air outlet 1501, and then drops into the uppermost liquid-blocking rib group 1523 after entering the outer sleeve 150 (ie On at least one liquid blocking section 1523a of the group closest to the atomizing assembly 11), the liquid blocking section 1523a can absorb a part of the liquid, and the other part of the liquid drips onto the next layer of liquid blocking rib group 1523 through the drip port O, The next layer of liquid-blocking rib group 1523 also absorbs part of the liquid. Ideally, when the number of the liquid blocking rib groups 1523 is sufficient, it can be considered that the liquid can be completely absorbed, and no liquid leaks out through the air guide holes 1527 and the air inlet holes 1525 .

Preferably, the surface of the liquid blocking section 1523a in the liquid blocking rib group 1523 adjacent to the air outlet 1501 facing the air outlet 1501 is a rough plane, so as to enhance the absorption capacity of the liquid blocking section 1523a.

Preferably, the liquid drop port O formed in the liquid blocking rib group 1523 adjacent to the air outlet hole 1501 and the projection of the air outlet hole 1501 along the axial direction of the air inlet pipe 1521 are staggered from each other. That is, the position of the air outlet hole 1501 is staggered from the position of the liquid drop port O in the liquid blocking rib group 1523, so that when the aerosol-forming matrix and/or the formed condensate in the atomization chamber a drips through the air outlet hole 1501, preferentially The end surface where the closed end 1521b of the air inlet pipe 1521 is located is partially absorbed, and only the fluid that cannot be absorbed on the end surface of the closed end 1521b will drop to the next layer of liquid blocking section 1523a through the adjacent drip port O. Further, the air intake and liquid blocking structure 15 is attached to the base 110 and is located below the atomizing core 112, the air outlet end of the outer sleeve 150 having the air outlet hole 1501 extends into the atomization chamber a, and the tube wall of the outer sleeve 150 is connected to the atomization chamber a. Due to the height difference between the bases 110, a liquid container b is defined and formed, and most of the matrix and/or the formed condensate formed by the aerosol dropped from the atomization chamber a remain in the liquid container b. Only the liquid at the position opposite to the air outlet hole 1501 will drip into the outer sleeve 150, thereby reducing the risk of liquid leakage.

Further, the air outlet holes 1501 include a plurality of air outlet holes, the closed end 1521b of the air inlet pipe 1521 faces the plurality of air outlet holes 1501, and the projections of the plurality of air outlet holes 1501 completely fall into the plane of the closed end 1521b. In this specific embodiment, there are five air outlet holes 1501 on the air outlet end of the outer sleeve 150, so that the airflow is concentrated and centered to blow the heating surface directly. At the same time, the closed end 1521b is facing the plurality of air outlet holes 1501, which further ensures that when the aerosol in the atomization chamber a forms the matrix and/or the formed condensate drips through the air outlet holes 1501, it preferentially drops on the closed end of the air inlet pipe 1521 The end face where 1521b is located is partially absorbed.

It can be understood that, since the aerosol-forming matrix and/or the condensed liquid formed in the atomizing chamber a has a certain viscosity relative to ordinary liquids, the air outlet holes 1501 on the outer sleeve 150 can be configured to have a small diameter and a large number, so that the It is realized that a large amount of liquid cannot enter the outer sleeve 150 through the air outlet 1501 due to surface tension, and at the same time, the air intake can be ensured.

Similarly, the drip channel formed by the liquid blocking section 1523a can be configured to be small in size and large in number, so as to prevent the liquid from passing through and entering the next layer of liquid blocking rib group 1523 while ensuring the air intake.

In the air intake and liquid blocking structure 15 of the present invention, by arranging the liquid blocking rib groups 1523 and defining a plurality of liquid drop channels between the liquid blocking rib groups 1523, the aerosol in the atomization chamber a can form a matrix and/or form a Part of the condensed liquid entering the outer casing 150 through the air outlet 1501 can be absorbed by the liquid blocking rib group 1523, thereby preventing the liquid from leaking to the power supply device through the air guide hole 1527 and the air inlet hole 1525, affecting the service life of the power supply device.

The present invention also provides an atomizer 100 having the above-mentioned air intake and liquid blocking structure 15 and an aerosol generating device having the same. All functions of 15 will not be repeated here.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, on the premise that the concept of the present invention is not lost, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims

An air intake liquid blocking structure is characterized in that: the air intake liquid blocking structure comprises:

an outer sleeve, which has an air outlet end facing the atomizing assembly; the air outlet end is provided with an air outlet communicating with the atomizing cavity in the atomizing assembly; and

The air intake liquid blocking member is sleeved in the outer casing; the air intake liquid blocking member includes an intake pipe and at least two sets of liquid blocking ribs; the intake pipe includes an open end and a closed end arranged along its own axial direction, and a peripheral wall connected between the open end and the closed end;

The open end is provided with an air intake hole that communicates between the outside and the inner cavity of the air intake pipe, and the outer peripheral wall is provided with an air guide hole that communicates between the inner cavity of the air intake pipe and the air outlet hole;

Wherein, all the liquid blocking rib groups are axially spaced along the air inlet pipe, and each group of the liquid blocking rib groups includes at least one liquid blocking section protruding radially along the air inlet pipe and arranged in the circumferential direction , at least one drip port is defined between the liquid blocking segments located on the same circumference; the drip ports in the adjacent liquid blocking rib groups are staggered along the axial projection of the air intake pipe, and are arranged along the The axial directions of the air intake pipes are communicated with each other to form a drip channel.
The air intake liquid blocking structure according to claim 1, wherein the liquid drip port and the air outlet hole formed in a group of the liquid blocking rib groups adjacent to the air outlet hole are along the axis of the air intake pipe The projections are staggered from each other.
The air-intake and liquid-blocking structure according to claim 1, wherein the surface of the liquid-blocking section in the liquid-blocking rib group adjacent to the air-outlet facing the air-outlet is a rough plane.
The air intake liquid blocking structure according to claim 1, wherein the air outlet hole comprises a plurality of air outlet holes, and the closed end of the air inlet pipe is facing the plurality of air outlet holes, And the projections of the plurality of air outlet holes completely fall into the plane where the closed end is located.
The air intake liquid blocking structure according to claim 1, wherein the air guide holes are disposed between the at least two groups of liquid blocking rib groups and the air intake holes and include a circumferential direction of the air intake pipe. of multiple.
The air-intake and liquid-blocking structure according to claim 1, wherein the outer sleeve is made of metal material, and the air outlet hole on the outer sleeve is facing the heating surface of the atomizer.
The air intake liquid blocking structure according to claim 1, wherein a sealing flange protrudes radially on the outer peripheral wall of the air intake pipe adjacent to the open end, and the outer sleeve is sealingly sleeved on the sealing the outside of the flange and surrounding the air guide hole;

Wherein, there is a space between the inner tube wall of the outer sleeve and the liquid blocking section in each group of the liquid blocking rib group to allow the pressure gas to flow into the atomization cavity, and prevent the fluid in the atomization cavity from flowing out to the outside Clearance.
An atomizer, characterized in that: the atomizer comprises an atomization assembly with an atomization cavity and the air intake and liquid blocking structure according to claims 1-7.
The atomizer according to claim 8, wherein the atomization assembly comprises a base forming the atomization cavity and an atomization core fitted in the atomization cavity, and the air intake resists liquid The structure is fitted on the base and located below the atomizing core, and the air outlet end of the outer sleeve with the air outlet hole extends into the atomizing cavity.
An aerosol generating device, characterized in that: the aerosol generating device comprises the atomizer of claim 9 .