EP4218436A1

EP4218436A1 - Vaporization core, vaporizer, and electronic vaporization apparatus

Info

Publication number: EP4218436A1
Application number: EP20954457.6A
Authority: EP
Inventors: Congwen XIAO; Zhenlong Jiang; Hongliang Luo; Changyong Yi; Xiaoping Li; Lingrong XIAO
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2023-08-02
Also published as: US20230225405A1; EP4218436A4; JP2023541653A; WO2022061603A1

Abstract

Provided are a vaporization core (30), a vaporizer (100), and an electronic vaporization apparatus (300), the vaporization core (30) comprising a porous substrate (32) and a heat-generating member (34); the porous substrate (32) comprising: a liquid-directing part (323), having a liquid-absorbent surface (326) and a vaporization surface (327), the liquid-directing part (323) is used for directing a liquid matrix the vaporization surface (327); an air exchange part (325) is connected to the liquid-directing part (323), a ventilation part (325) has lyophobic and air-permeability characteristics, the ventilation part (325) comprises a gas inlet surface (328) and a gas outlet surface (329), the gas inlet surface (328) is in contact with a gas, the gas outlet surface (329) is exposed to a liquid storage chamber, and the ventilation part (325) is used for conducting the gas from the gas inlet surface (328) to the gas outlet surface (329).

Description

TECHNICAL FIELD

The present disclosure relates to the field of electronic atomization technologies, and in particular, to an atomization core, an atomizer, and an electronic atomization apparatus.

BACKGROUND

In the related art, an electronic atomization apparatus mainly includes an atomizer and a body assembly. The atomizer generally includes a liquid storage cavity and an atomization assembly, the liquid storage cavity is configured to store an atomizable medium, and the atomization assembly is configured to heat and atomize the atomizable medium, to form aerosol for an inhaler to inhale. The body assembly is configured to supply power to the atomizer.
When the atomizer atomizes the atomizable medium, the atomizable medium is consumed at a fast speed, and an air pressure of the liquid storage cavity is reduced, which results in poor liquid supply to the atomization assembly, in this way, the atomizable medium fails to be quickly replenished to the atomization assembly. As a result, the atomization assembly dry burns and is overheated, resulting in damage to the atomization assembly due to the poor liquid supply, a burnt smell, and harmful substances.

SUMMARY

The present disclosure mainly provides an atomization core, an atomizer, and an electronic atomization apparatus, so as to resolve the problem of poor liquid supply in the electronic atomization apparatus.
In order to resolve the foregoing technical problem, the present disclosure adopts a technical solution as follows. An atomization core applied to an electronic atomization apparatus is provided and includes a porous matrix and a heating element; and the porous matrix includes: a liquid guide part that has a liquid absorbing surface for absorbing a liquid substrate and an atomization surface on which the heating element is disposed, where the liquid guide part is configured to conduct a liquid substrate on the side of the liquid absorbing surface to the atomization surface; and a vent part connected to the liquid guide part, where the vent part has a lyophobic ventilation characteristic, the vent part includes an air inlet surface and an air outlet surface, the air inlet surface is configured to contact gas, the air outlet surface is configured to be exposed to a liquid storage cavity, and the vent part is configured to conduct gas on the side of the air inlet surface to the air outlet surface.
In order to resolve the foregoing technical problem, the present disclosure adopts another technical solution as follows. An atomizer is provided and includes the foregoing atomization core. A liquid storage cavity and an atomization cavity are formed in the atomizer, a liquid absorbing surface and an air outlet surface are exposed to a liquid substrate in communication with the liquid storage cavity, an atomization surface is exposed to the atomization cavity, and an air inlet surface is exposed to gas in communication with the atomization cavity.
In order to resolve the foregoing technical problem, the present disclosure adopts another technical solution as follows. An electronic atomization apparatus is provided and includes a power supply assembly and the foregoing atomizer, where the power supply assembly is electrically connected to the atomizer, and is configured to supply power to the atomization core of the atomizer.
Beneficial effects of the present disclosure are as follows. Different from the related art, the present disclosure discloses an atomization core, an atomizer, and an electronic atomization apparatus. By defining that the porous matrix of the atomization core includes the liquid guide part and the vent part, and the vent part has a lyophobic ventilation characteristic, when the liquid guide part guides the liquid in the liquid storage cavity from the liquid absorbing surface to the atomization surface, the external gas may be guided to the liquid storage cavity by using the vent part, so as to resolve the problem that liquid discharge is not smooth because air pressure in the liquid storage cavity is too low when the atomization core guides the liquid, thereby facilitating a return rise of the air pressure in the liquid storage cavity and enabling the liquid to be smoothly guided to the atomization surface from the liquid absorbing surface. Therefore, the atomization core provided in the present disclosure may supply air to the liquid storage cavity on the side of the liquid absorbing surface, thereby improving an air pressure condition of the liquid storage cavity, so as to avoid the case that liquid discharge is not smooth due to a low air pressure in the liquid storage cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural view of an electronic atomization apparatus according to the present disclosure.
FIG. 2 is a schematic structural view of an atomizer in the electronic atomization apparatus shown in FIG. 1.
FIG. 3 is a cross-sectional schematic structural view of the atomizer shown in FIG. 2 in a BB direction.
FIG. 4 is a schematic exploded structural view of the atomizer shown in FIG. 2.
FIG. 5 is a schematic structural view of a partially enlarged structure of the atomizer shown in FIG. 3.
FIG. 6 is a cross-sectional schematic structural view of a base in the atomizer shown in FIG. 5 in another direction.
FIG. 7 is a cross-sectional schematic structural view of a first embodiment of a porous matrix in the atomizer shown in FIG. 2.
FIG. 8 is a cross-sectional schematic structural view of a second embodiment of a porous matrix in FIG. 2.
FIG. 9 is a cross-sectional schematic structural view of a third embodiment of a porous matrix in FIG. 2.
FIG. 10 is a cross-sectional schematic structural view of a fourth embodiment of a porous matrix in FIG. 2.
FIG. 11 is a cross-sectional schematic structural view of a fifth embodiment of a porous matrix in FIG. 2.
FIG. 12 is a cross-sectional schematic structural view of a sixth embodiment of a porous matrix in FIG. 2.
FIG. 13 is a cross-sectional schematic structural view of a seventh embodiment of a porous matrix in FIG. 2.
FIG. 14 is a cross-sectional schematic structural view of an eighth embodiment of a porous matrix in FIG. 2.
FIG. 15 is a schematic top view of an embodiment of the porous matrix in FIG. 7 or FIG. 14.
FIG. 16 is a schematic top view of another embodiment of the porous matrix in FIG. 7.
FIG. 17 is a schematic side view of an embodiment of the porous matrix in FIG. 8 or FIG. 10.
FIG. 18 is a schematic top view of an embodiment of the porous matrix in FIG. 9.
FIG. 19 is a schematic top view of another embodiment of the porous matrix in FIG. 9.
FIG. 20 is a cross-sectional schematic structural view of the porous matrix in FIG. 5.
FIG. 21 is a cross-sectional schematic structural view of the electronic atomization apparatus shown in FIG. 1 in an AA direction.

DETAILED DESCRIPTION

The technical solutions in embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.
Embodiment mentioned in the specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of the present disclosure. The term appearing at different positions of this specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in the specification may be combined with other embodiments.
The present disclosure provides an electronic atomization apparatus 300. Referring to FIG. 1 to FIG. 4, FIG. 1 is a schematic structural view of an embodiment of an electronic atomization apparatus according to the present disclosure, FIG. 2 is a schematic structural view of an embodiment of an atomizer in the electronic atomization apparatus shown in FIG. 1, FIG. 3 is a cross-sectional schematic structural view of the atomizer shown in FIG. 2 in a BB direction, and FIG. 4 is a schematic exploded structural view of the atomizer shown in FIG. 2.
As shown in FIG. 1, the electronic atomization apparatus 300 may be configured to atomize an e-liquid. As shown in FIG. 1, the electronic atomization apparatus 300 includes an atomizer 100 and a power supply assembly 200 that are connected to each other. The atomizer 100 is configured to store a liquid and atomize the liquid to form aerosol that may be inhaled by a user. The liquid may be a liquid substrate such as the e-liquid or a drug liquid. The power supply assembly 200 is configured to supply power to the atomizer 100, in this way, the atomizer 100 may atomize the liquid substrate to form aerosol.
As shown in FIG. 2 to FIG. 4, the atomizer 100 may include a cartridge tube 10, a base 20, an atomization core 30, and a bottom 40, where the atomization core 30 is disposed between the base 20 and the bottom 40, and the base 20, the atomization core 30, and the bottom 40 are housed in the cartridge tube 10.
In some embodiments, a liquid storage cavity 12 and an aerosol passage 14 are disposed in the cartridge tube 10, a liquid outlet port 16 is formed at one end of the cartridge tube 10, and the liquid outlet port 16 communicates with the liquid storage cavity 12. The liquid storage cavity 12 is configured to store an e-liquid, and the aerosol passage 14 is configured to send converted aerosol out.
As shown in FIG. 2 to FIG. 5, the base 20 is embedded in the cartridge tube 10 to cover the liquid outlet port 16. The base 20 may include a guide part 22 and an accommodating part 26 successively connected. A liquid inlet hole 222 and an air outlet hole 224 are disposed on the guide part 22, the liquid storage cavity 12 is in fluid communication with the liquid inlet hole 222, and the aerosol passage 14 is in fluid communication with the air outlet hole 224. An accommodating cavity 262 for accommodating a part of the atomization core 30 is formed in the accommodating part 26, and the atomization core 30 is partially accommodated in the accommodating cavity 262. The accommodating part 26 communicates with the guide part 22 and cooperates with a first surface 321 of the atomization core 30, in this way, the liquid inlet hole 222 is in fluid communication with the atomization core 30, the e-liquid in the liquid inlet hole 222 may be delivered to the atomization core 30 by using the guide part 22. The atomization core 30 is configured to convert the delivered e-liquid into aerosol by means of heating. The air outlet hole 224 is in fluid communication with the atomization core 30, and is configured to transfer the converted aerosol from the air outlet hole 224 to the aerosol passage 14. The aerosol is directed to the user's mouth through the aerosol passage 14.
In some embodiments, the liquid inlet hole 222 and the air outlet hole 224 are disposed on an end face of the base 20 near the liquid storage cavity 12. The liquid inlet hole 222 communicates opposite two end surfaces of the guide part 22, in this way, the e-liquid in the liquid storage cavity 12 may flow into the atomization core 30 through the liquid inlet hole 222. The air outlet hole 224 communicates the end face of the guide part 22 with the side surface of the guide part 22, and the atomized aerosol flows to the side surface of the guide part 22 with air flow, and further flows out through the air outlet hole 224 and the aerosol passage 14.
In some embodiments, the base 20 having the liquid inlet hole 222 and the air outlet hole 224 is formed as an integrated structure, and the liquid inlet hole 222 and the air outlet hole 224 are formed on the guide part 22, thereby further improving utilization of the guide part 22.In this way, the structure of the atomizer 100 is compact.
There may be only one liquid inlet hole 222 and one air outlet hole 224, or there may be one liquid inlet hole 222 and a plurality of air outlet holes 224, or there may be a plurality of liquid inlet holes 222 and one air outlet hole 224, or there may be a plurality of liquid inlet holes 222 and a plurality of air outlet holes 224. In the present disclosure, the number of the liquid inlet holes 222 and the number of the air outlet holes 224 are not specifically limited.
The cross-sectional shape of the liquid inlet hole 222 is non-circular. Specifically, the cross-sectional shape of the liquid inlet hole 222 may be a regular shape such as an ellipse, a rectangle, or a triangle, or may be an irregular shape such as a quadrilateral or a pentagon, which is not listed one by one herein.
An advantage of setting the shape of the liquid inlet hole 222 to a non-circular hole is that the non-circular hole may prevent a liquid film from being generated when the e-liquid enters the liquid inlet hole 222, so as to ensure fluency of conveying the e-liquid, and avoid a phenomenon of dry burning or a decrease in an aerosol amount during continuous suction. The liquid film means that when the e-liquid flows into the liquid inlet hole 222, a bubble film is formed at the opening of the liquid inlet hole 222, and blocks the liquid inlet hole 222.
As shown in FIG. 6, the internal surface of the air outlet hole 224 is disposed to include an arc-shaped surface, so as to increase a stay duration of aerosol in the air outlet hole 224, thereby effectively reducing the temperature of converted aerosol, and preventing burns causing by an excessive temperature when the aerosol flows out of the air outlet hole 224 and the aerosol passage 14.
As shown in FIG. 3 and FIG. 5, in some embodiments, the accommodating part 26 includes a lower surface 261 and a through hole 263. The lower surface 261 cooperates with the first surface 321 of the atomization core 30, and the through hole 263 is in communication with the liquid inlet hole 222 on the guide part 22. The number of through holes 263 may be equal to the number of liquid inlet holes 222 on the guide part 22, that is, a through hole 263 is correspondingly disposed on the accommodating part 26 at a position of each liquid inlet hole 222, in this way, the liquid inlet hole 222 is in communication with the atomization core 30, and the e-liquid may reach the atomization core 30 by using the liquid inlet hole 222. Alternatively, the accommodating part 26 is provided with only one through hole 263, and all the liquid inlet holes 222 are in communication with the through hole 263, which is not specifically limited in the present disclosure.
The accommodating part 26 is configured to partially accommodate the atomization core 30. In some embodiments, the accommodating part 26 is connected to the guide part 22, the atomization core 30 is partially accommodated in the accommodating cavity 262 of the accommodating part 26, and the first surface 321 of the atomization core 30 abuts against the lower surface 261 of the accommodating part 26 by using a sealing member 28, in this way, the accommodating part 26 is sealed with the atomization core 30, that is, the base 20 is sealed with the atomization core 30.
The base 20 is a component formed integrally, and the number of assemblies of the atomizer 100 may be reduced, in this way, installation is more convenient and related sealing performance is better.
In some embodiments, the atomization core 30 may include a porous matrix 32 and a heating element 34 disposed on the porous matrix 32. The heating element 34 is configured to atomize an e-liquid derived from the porous matrix 32.
As shown in FIG. 3 to FIG. 5, the sealing member 28 is disposed between the base 20 and the porous matrix 32, and is disposed on the first surface 321 and the side surface 324 of the porous matrix 32. In some embodiments, the sealing member 28 has an upper wall 282 that cooperates with the first surface 321 of the porous matrix 32 and a sidewall 284 that cooperates with the side surface 324 of the porous matrix 32, so as to seal the gap between the base 20 and the porous matrix 32, and achieve a sealing cooperation between the base 20 and the atomization core 30, so as to prevent the e-liquid from leaking in the process of flowing from the base 20 to the porous matrix 32.
The upper wall 282 of the sealing member 28 is located between the lower surface 261 and the porous matrix 32, and an avoidance hole 286 corresponding to the porous matrix 32 is disposed on the upper wall 282, the avoidance hole 286 communicates with the through hole 263. The side wall 284 of the sealing member 28 is sandwiched between the inner wall of the accommodating cavity 262 and the porous matrix 32. Specifically, the sealing member 28 is sleeved on the porous matrix 32, and is sandwiched between the porous matrix 32 and the inner wall of the accommodating cavity 262. An advantage of this arrangement is that, on the one hand, the porous matrix 32 may be positioned, and on the other hand, the e-liquid on the side of the porous matrix 32 may be prevented from leaking out of the side surface 324 of the porous matrix 32, thereby avoiding waste.
The atomization core 100 further includes a sealing cover 29, and the sealing cover 29 covers the guide part 22, and is located between the guide part 22 and the inner wall of the liquid storage cavity 12, so as to seal the gap between the base 20 and the cartridge tube 10, so as to avoid leakage.
The sealing cover 29 is provided with a through hole 292 at the position corresponding to the liquid inlet hole 222, and a wall 294 sandwiched between the air outlet hole 224 and the aerosol passage 40 is formed in the direction towards the air outlet hole 224 at the position corresponding to the air outlet hole 224. The through hole 292 communicates with the liquid storage cavity 12 and the liquid inlet hole 222, and the wall 294 is sandwiched between the air outlet hole 224 and the aerosol passage 40, so as to prevent the e-liquid in the liquid storage cavity 12 from entering the air outlet hole 224.
The bottom 40 is configured to cooperate with the base 20 to fasten the atomization core 30 between the bottom 40 and the base 20, and an atomization cavity 41 is formed between the bottom 40 and the atomization core 30, and the atomization cavity 41 communicates with the air outlet hole 224. The bottom 40 includes a bottom wall 42 and a side wall 44. A fastening and fitting structure for connecting to the base 20 is disposed on the side wall 44, an air inlet hole 46 is disposed on the bottom wall 42, and the air inlet hole 46 further communicates with the atomization cavity 41.
The bottom 40 and the base 20 may be connected by using the fastening and fitting structure. For example, a hook may be disposed on the base 20, and a slot may be disposed on the bottom 40. Alternatively, a hook is disposed on the bottom 40, and a slot is disposed on the base 20.
The air inlet hole 46 is disposed on the bottom wall 42, and the air inlet hole 46 is in fluid communication with the outside. An external air flow is sent from the air inlet hole 46 to the atomization cavity 41 between the bottom 40 and the atomization core 30, and further, atomized aerosol is taken away from the atomization core 30 and is sent out of the aerosol passage 14 through the air outlet hole 224.
In some embodiments, six circular air inlet holes 46 that are arranged in a shape of plum flowers are disposed on the bottom wall 42. In some embodiments, at least one air inlet hole 46 is disposed on the bottom wall 42. When a plurality of air inlet holes 46 are disposed on the bottom wall 42, the plurality of air inlet holes 46 may be disposed in another arrangement manner, for example, in a form of an array or a star shape, which is not specifically limited herein. The shape of the air inlet hole 46 may also be any regular or irregular shape, which is not specifically limited herein.
Further, in some embodiments, the maximum size of the cross-section of each air inlet hole 46 is less than or equal to 0.2 mm. Several studies and tests have found that when the maximum size of the hole is less than or equal to 0.2 mm, the liquid cannot pass through the hole. Therefore, in some embodiment, the maximum size of the cross-section of the air inlet hole 46 is set to be less than or equal to 0.2 mm, which may further prevent an e-liquid from leaking from the air inlet hole 46, the leakage of the e-liquid may affect use.
As shown in FIG. 3 to FIG. 5, in some embodiments, the atomization core 30 may include a porous matrix 32 and a heating element 34 disposed on the porous matrix 32. The heating element 34 is configured to atomize an e-liquid derived from the porous matrix 32. Specifically, the heating element 34 may be at least one of a heating coating, a heating line, a heating plate, or a heating net. The heating element 34 is electrically connected to the power supply assembly 200 by using an electrode 34.
The porous matrix 32 may be porous glass, porous ceramic, or the like. In some embodiments, the porous matrix 32 is porous ceramic. A porous ceramic material is usually a ceramic material sintered at a high temperature by using a component such as an aggregate, a binder, and a pore-forming agent. Inside the porous ceramic material, there are a plurality of porous structures in communication with each other and in communication with a surface of the material. The porous ceramic material has high porosity, stable chemical properties, large specific surface area, small volume density, low thermal conductivity, and high temperature and corrosion resistance. It is widely used in metallurgy, biology, energy, and environmental protection.
In some embodiments, the porous ceramic material is used to make the porous matrix 32. The e-liquid on one side of the porous matrix 32 penetrates to the other side of the porous matrix 32 through a plurality of porous structures inside the porous ceramic material, which communicate with each other and the surface of the material, and contacts the heating element 34 provided on one side of the porous matrix 32, thereby atomizing the e-liquid into aerosol.
FIG. 7 is a cross-sectional schematic structural view of a first embodiment of a porous matrix in the atomizer shown in FIG. 2.
Specifically, the porous matrix 32 has a first surface 321, a second surface 322, and a side surface 324, the second surface 322 is disposed opposite to the first surface 321, and the side surface 324 is connected to the first surface 321 and the second surface 322. Generally, the first surface 321 may be configured to contact an e-liquid that communicates with the liquid storage cavity 12, and the second surface 322 may be configured to contact gas. The gas contact herein may be that the second surface 322 contacts external air, contacts air in the atomization cavity 41, or contacts air in the aerosol passage 14.
In some embodiments, the e-liquid on the side of the first surface 321 of the porous matrix 32 penetrates to the side of the second surface 322 of the porous matrix 32 through a plurality of porous structures inside the porous matrix 32 which communicate with each other and communicate with the material surface, and the heating element 34 is disposed on the second surface 322 to atomize the e-liquid which penetrates to the second surface 322. The side surface 324 also communicates with a porous structure, so the side surface 324 may also be used for liquid guiding or ventilation.
The porous matrix 32 includes a connected liquid guide part 323 and a vent part 325. The liquid guide part 323 has a liquid absorbing surface 326 for absorbing a liquid substrate and an atomization surface 327 on which the heating element 34 is disposed. The liquid guide part 323 is configured to conduct the liquid substrate on the side of the liquid absorbing surface 326 to the atomization surface 327. The vent part 325 has a lyophobic ventilation characteristic. The lyophobic characteristic is for a liquid substrate to be atomized herein. As long as the vent part 325has the lyophobic characteristic for the liquid substrate to be atomized, the vent part 325 has the lyophobic characteristic described herein. The ventilation characteristic is achieved by the fact that the plurality of porous structures inside the porous matrix 32, which are in communication with each other, are breathable. The vent part 325 is configured to conduct gas to the liquid storage cavity 12, so as to improve a pressure condition in the liquid storage cavity 12.
Specifically, the vent part 325 includes an air inlet surface 328 and an air outlet surface 329. The air inlet surface 328 may be configured to contact with gas. The air outlet surface 329 is exposed to the liquid storage cavity 12, where being exposed to the liquid storage cavity 12 includes a case in which the air outlet surface 329 is directly a wall of the liquid storage cavity 12 or the air outlet surface 329 communicates with the liquid storage cavity 12. The gas contact herein may be that the air inlet surface 328 is in contact with external air, the air inlet surface 328 is in contact with air in the atomization cavity 41, or the air inlet surface 328 is in contact with air in the aerosol passage 14. The vent part 325 may be configured to conduct the gas on the side of the air inlet surface 328 to the air outlet surface 329, where the gas herein is mainly air, and finally the gas is conducted to the liquid storage cavity 12.
In some embodiments, the liquid guide part 323 is configured to direct the e-liquid from the first surface 321 to the second surface 322, and the vent part 325 is configured to import the gas from the second surface 322 to the first surface 321.
In some embodiments, the porous matrix 32 is an integrally formed component. A part of the porous matrix 32 is processed by using a ceramic modification technology to obtain a lyophobic characteristic. An unmodified substrate is used as the liquid guide part 323, and a porous structure in the liquid guide part 323 is used to conduct the e-liquid, and the modified part of the substrate is used as the vent part 325, in this way, the vent part 325 does not perform a function of conducting the e-liquid, but performs only gas exchange.
The ceramic modification technology may be a micro-nano technology, a physical aerosol deposition, an etching, an electroplating, spraying, a plasma technology, or the like. For example, the micro-nano technology is used to change the porous structure of a part of the substrate, in this way, the e-liquid does not enter the porous structure in the vent part 325, the ventilation characteristic of the porous structure is not affected, and the vent part 325 has the lyophobic ventilation characteristic. Alternatively, a lyophobic material, which may be an olefin-based polymer, an amine-based polymer, an ester-based polymer, a fluororesin, a siloxane compound, a silane-based compound, a thiol-based compound, or the like, is deposited by physical aerosol deposition, electroplated, or sprayed onto a part of the porous matrix 32, and then heat-treated to form the vent part 325 having the lyophobic ventilation characteristic.
In some embodiments, the porous matrix 32 may be a component not formed in an integrated manner, and the liquid guide part 323 and the vent part 325 may be detachably connected. For example, the vent part 325 is engaged with the liquid guide part 323 by means of clamping, inserting, or screwing, which is not specifically limited in the present disclosure.
The porous matrix 32 may be in a flat plate shape, a stepped shape, or the like, which is not specifically limited in the present disclosure. The first surface 321 is the surface of the side of the porous matrix 32 facing the liquid storage cavity 12, and the second surface 322 is the surface of the side of the porous matrix 32 away from the first surface 321. Both the first surface 321 and the second surface 322 may be flat planes, and the first surface 321 and the second surface 322 may be irregular planes such as curved surfaces. This is not specifically limited in the present disclosure. For example, a groove is disposed on a side of the first surface 321 of the porous matrix 32, and the surface of the groove also belongs to the first surface 321.
There is at least one vent part 325, or a plurality of vent parts 325 may be disposed on the porous matrix 32. For example, three or four equal vent parts 325 are disposed on each side along the circumferential direction of the porous matrix 32, which is not specifically limited in the present disclosure.
As shown in FIG. 3, FIG. 4, and FIG. 5, in some embodiments, the first surface 321 is the surface of the side of the porous matrix 32 facing the liquid storage cavity 12, the e-liquid in the liquid storage cavity 12 passes through the through hole 292, the liquid inlet hole 222, the through hole 263, and the avoidance hole 286 to the first surface 321 of the porous matrix 32, and then the e-liquid permeates through the first surface 321 to the second surface 322. The heating element 34 disposed on the second surface 322 atomizes the e-liquid to form aerosol in the atomization cavity 41, and the aerosol flows through the side surface and the air outlet hole 224 of the guide part 22, flows out of the aerosol passage 14, and is guided to the mouth of the user through the aerosol passage 14. The second surface 322 is the surface of the side of the porous matrix 32 away from the liquid storage cavity 12, and the air inlet hole 46 on the bottom wall 42 is in fluid communication with the outside, in this way, an external air flow is sent from the air inlet hole 46 to the atomization cavity 41, that is, the air flow takes away aerosol generated by atomization at the second surface 322.
The e-liquid in the liquid storage cavity 12 is continuously consumed as the user smokes, and the e-liquid in the liquid storage cavity 12 is reduced, thereby reducing air pressure in the liquid storage cavity 12. If this is not improved in a timely manner, it is easy to cause poor e-liquid discharge when the e-liquid in the liquid storage cavity 12 passes through the porous matrix 32, thereby causing the heating element 34 to dry burn and generate scorched flavor due to a liquid supply failure. Because the vent part 325 exists, when the internal and external pressure difference of the liquid storage cavity 12 is excessively large, air may be introduced from one side of the second surface 322 to the first surface 321 by using the vent part 325, so as to improve a condition that the air pressure in the liquid storage cavity 12 is excessively low, so as to avoid excessively large internal and external pressure difference of the liquid storage cavity 12, thereby facilitating smooth e-liquid discharge in the liquid storage cavity 12 and avoiding scorched flavor.
For example, as shown in FIG. 7 to FIG. 9, the vent part 325 penetrates the porous matrix 32 in the direction in which the first surface 321 points to the second surface 322. Therefore, because of the lyophobic ventilation characteristic of the vent part 325, gas may be introduced from the side of the porous matrix 32at which the second surface 322 is located to the side of the porous matrix 32 at which the first surface 321 is located along the porous structure in the vent part 325, thereby improving the air pressure condition in the liquid storage cavity 12 and avoiding excessively large internal and external pressure difference of the liquid storage cavity 12. The arrows in the accompanying drawings are used to indicate directions of the gas.
In some embodiments, as shown in FIG. 7 to FIG. 9, in the porous matrix 32, both the liquid absorbing surface 326 and the air outlet surface 329 are located on the first surface 321, and both the air inlet surface 328 and the atomization surface 327 are located on the second surface 322. In other words, the vent part 325 has a part of the first surface 321 and a part of the second surface 322. Therefore, the part of the porous matrix 32 located between the air outlet surface 329 and the air inlet surface 328 does not undertake a function of conducting the e-liquid, but delivers, under a pressure difference, gas entering through the air inlet surface 328 to the air outlet surface 329, so as to adjust the air pressure condition in the liquid storage cavity 12. In addition, if a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the side surface 324 may be used as the liquid absorbing surface 326, and if the vent part 325 has a part of the side surface 324, the part of the side surface 324 may be used as the air outlet surface 329.
As shown in FIG. 7 to FIG. 9, the vent part 325 is extended from the air outlet surface 329 to the air inlet surface 328, that is, the vent part 325 runs through the porous matrix 32 in the direction in which the first surface 321 points to the second surface 322, and the vent part 325 may be configured to directly conduct the gas on the side of the porous matrix 32 at which the second surface 322 is located to the side of the porous matrix 32 at which the first surface 321 is located, so as to improve the air pressure condition in the liquid storage cavity 12.
As shown in FIG. 5, FIG. 7, and FIG. 15, FIG. 7 and FIG. 15 are respectively schematic structural views of another porous matrix 32 in the atomizer shown in FIG. 2, and are described by replacing the porous matrix 32 in FIG. 5 with the porous matrix 32.
Specifically, the vent part 325 is located in the middle part of the porous matrix 32, and the vent part 325 is spaced apart from the side surface 324 of the porous matrix 32. The first surface 321 faces the liquid storage cavity 12, and the second surface 322 faces the atomization cavity 41. Therefore, the liquid guide part 323 seals the peripheral side of the vent part 325, and the vent part 325 intakes gas from the air inlet surface 328 of the second surface 322, and conducts the gas to the air outlet surface 329 of the first surface 321, so as to introduce the gas outside the liquid storage cavity 12 into the liquid storage cavity 12, so as to adjust the air pressure condition in the liquid storage cavity 12.
As shown in FIG. 5, FIG. 7, and FIG. 16, FIG. 16 is a schematic top view of another embodiment of the porous matrix in FIG. 7. The vent part 325 is located in the middle part of the porous matrix 32, and the vent part 325 further has a part of the side surface 324. The first surface 321 faces the liquid storage cavity 12, the second surface 322 faces the atomization cavity 41, and the side surface 324 of the porous matrix 32 is sealed by the side wall 284 of the sealing member 28. Therefore, the vent part 325 may directly introduce the gas in the atomization cavity 41 on the side of the second surface 322 into the liquid storage cavity 12 on the side of the first surface 321. In some embodiments, if at least a part of the side surface 324 is exposed to the gas in the atomization cavity 41, the vent part 325 may further intake air from the side surface 324. If at least a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.
As shown in FIG. 5, FIG. 8, and FIG. 17, FIG. 17 is a schematic side view of an embodiment of the porous matrix in FIG. 8 or FIG. 10. The vent part 325 is located on the edge of the porous matrix 32, that is, the vent part 325 is located on the outside of the liquid guide part 323, and the vent part 325 further has a part of the side surface 324, and the side surface 324 is sealed by the side wall 284. Therefore, the vent part 325 may directly introduce the gas in the atomization cavity 41 into the liquid storage cavity 12. In some embodiments, if at least a part of the side surface 324 is exposed to the gas in the atomization cavity 41, the vent part 325 may further intake air from the side surface 324. If at least a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.
As shown in FIG. 5, FIG. 9, and FIG. 18, FIG. 18 is a schematic top view of an embodiment of the porous matrix in FIG. 9. The vent part 325 is arranged in an annular shape and surrounds the outer surface of the liquid guide part 323. In other words, the vent part 325 is arranged in an annular shape along the edge of the porous matrix 32. The vent part 325 may directly introduce the gas in the atomization cavity 41 into the liquid storage cavity 12, in this way, the vent part 325 may exchange air more evenly. Because of the lyophobic characteristic of the vent part 325, the vent part 325 may further lock the liquid in the porous matrix 32, so as to prevent the liquid in the liquid guide part 323 from leaking from the side surface 324. The side wall 284 of the sealing member 28 is sandwiched between the side surface 324 of the porous matrix 32 and the inner wall of the accommodating cavity 262, and the vent part 325 cooperates with the side wall 284 to further improve a sealing effect. In some embodiments, if a part of the side surface 324 is exposed to the gas in the atomization cavity 41, the vent part 325 may further intake air from the side surface 324. If a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the side surface 324, and the liquid guide part 323 may further absorb liquid from the side surface 324.
As shown in FIG. 5, FIG. 9, and FIG. 19, FIG. 19 is a schematic top view of another embodiment of the porous matrix in FIG. 9. A plurality of vent parts 325 are spaced apart from each other along the outer surface of the liquid guide part 323, that is, a plurality of vent parts 325 are disposed around the side surface 324 of the porous matrix 32, in this way, a uniform air exchange effect may be achieved. In addition, a local region of the porous matrix 32 has a liquid locking effect, which further improves a local sealing effect of the porous matrix 32.
In some embodiments, as shown in FIG. 10, both the liquid absorbing surface 326 and the air outlet surface 329 are located on the first surface 321, the air inlet surface 328 is located on the side surface 324, and the atomization surface 327 is located on the second surface 322.
As shown in FIG. 10 and FIG. 17, FIG. 17 is a schematic side view of an embodiment of the porous matrix in FIG. 8 or FIG. 10. The air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, and at least a part of the air inlet surface 328 is exposed to the gas in communication with the atomization cavity 41. Therefore, the vent part 325 may intake air from the side surface 324, and intake air from the air inlet surface 328 to output air from the air outlet surface 329 to the liquid storage cavity 12 under the action of a pressure difference, so as to adjust the air pressure condition in the liquid storage cavity 12.
Therefore, the vent part 325 may not penetrate the porous matrix 32, so as to shorten working hours of the vent part 325 and reduce manufacturing costs. In another embodiment, if at least a part of the side surface 324 is also exposed to the e-liquid in communication with the liquid storage cavity 12, the vent part 325 may further output air from the air inlet surface 328, and the liquid guide part 323 may further absorb liquid from the side surface 324.
In some embodiments, as shown in FIG. 11, the air outlet surface 329 is located on the side surface 324, at least a part of the air outlet surface 329 is exposed to the e-liquid in communication with the atomization cavity 12, the air inlet surface 328 and the atomization surface 327 are located on the second surface 322, the second surface 322 is exposed to gas, and the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324. Under the action of a pressure difference, the vent part 325 intakes air from the air inlet surface 328 and conducts gas to the air outlet surface 329, and at least a part of the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, in this way, the vent part 325 may import gas into the liquid storage cavity 12. The vent part 325 may be disposed in an annular manner around the outer circumference of the liquid guide part 323, or at least one vent part 325 is disposed along the outer circumference of the porous matrix 32.
In some embodiments, as shown in FIG. 12, both the air inlet surface 328 and the air outlet surface 329 are located on the side surface 324, the atomization surface 327 is located on the second surface 322, and the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324.A part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, in this way, gas transmitted from the air outlet surface 329 enters the liquid storage cavity 12. A part of the side surface 324 is exposed to the atomization cavity 41, in this way, gas may enter into the vent part 325 through the air inlet surface 328. The vent part 325 may be disposed in an annular manner around the outer circumference of the liquid guide part 323, or at least one vent part 325 is disposed along the outer circumference of the porous matrix 32.
In some embodiments, as shown in FIG. 13, the vent part 325 is a protrusion disposed on the side surface 324, and it may also be considered that both the air inlet surface 328 and the air outlet surface 329 are located on the side surface 324, and the vent part 325 may intake air from the air inlet surface 328 facing the atomization cavity 41, and direct gas from the air outlet surface 328 facing the liquid storage cavity 12 to the liquid storage cavity 12. The vent part 325 may be disposed on the upper edge of the side surface 324 close to the first surface 321, or the vent part 325 is disposed on the lower edge of the side surface 324 close to the second surface 322, or the vent part 325 is disposed in the middle of the side surface 324. The vent part 325 may be disposed in an annular manner along the side surface 324, or a plurality of vent parts may be spaced apart from each other circumferentially along the side surface 324.
In some embodiments, as shown in FIG. 14 and FIG. 15, FIG. 15 is a schematic top view of an embodiment of the porous matrix in FIG. 7 or FIG. 14. Both the air inlet surface 328 and the air outlet surface 329 are located on the first surface 321, the liquid absorbing surface 326 is located on the first surface 321 and/or the side surface 324, the vent part 325 is spaced apart from the second surface 322, and the atomization surface 327 is located on the second surface 322.
In some embodiments, the air inlet surface 328 is exposed to the air outlet hole 224 or the aerosol passage 14 in communication with the atomization cavity 41, the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, and the second surface 322 is exposed to the atomization cavity 41.
If the first surface 321 is exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the first surface 321. If the first surface 321 and a part of the side surface 324 are exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the first surface 321 and the side surface 324. If the air outlet surface 329 is exposed to the e-liquid in communication with the liquid storage cavity 12, the remaining first surface 321 is not exposed to the e-liquid in communication with the liquid storage cavity 12, and a part of the side surface 324 is exposed to the e-liquid in communication with the liquid storage cavity 12, the liquid absorbing surface 326 is located on the side surface 324.
In some embodiments, as shown in FIG. 20, the porous matrix 32 is in a stepped shape, the liquid guide part 323 includes a body 3231 and a protrusion 3232 of an integrated structure, the body 3231 is provided with a groove 3233, the side of the protrusion 3232 away from the groove 3233 is provided with the heating element 34, and the vent part 325 is disposed on the outer surface of the body 3231 to form the outer eaves of the porous matrix 32. The porous matrix 32 includes two outer eaves disposed on two opposite sides of the body 3231. One outer eaves may be disposed by using a ceramic modification technology to form the vent part 325, or the two outer eaves are disposed by using a ceramic modification technology to form the vent part 325, or the entire circumferential outer eaves of the body 3231 may be disposed by using a ceramic modification technology to form the vent part 325.
The surface of the side of the body 3231 and the outer eaves facing the liquid storage cavity 12 side is a first surface 321, the first surface 321 further includes the surface of the groove 3233, and the surface of the side of the body 3231 and the outer eaves away from the first surface 321 side is a second surface 322.
In other words, the groove 3233 is disposed on the first surface 321 of the porous matrix 32, and after the e-liquid in the liquid storage cavity 12 enters the groove 3233, the contact area between the e-liquid and the porous matrix 32 may be increased, thereby increasing the diffusion speed of the e-liquid. In addition, the groove 3233 may further reduce the distance between the first surface 321 and the second surface 322 of the porous matrix 32, so as to reduce the flow resistance of the e-liquid to the second surface 322 of the porous matrix 32, and further increase the diffusion speed of the e-liquid, thereby effectively improving liquid guiding efficiency of the porous matrix 32.
As shown in FIG. 21, in some embodiments, a magnet 210 is disposed between the power supply assembly 200 and the atomizer 100, and two ends of the magnet 210 are respectively attracted to the power supply assembly 200 and the atomizer 100, so as to connect the power supply assembly 200 and the atomizer 100. That is, in some embodiments, the power supply assembly 200 and the atomizer 100 are connected by using a magnetically attracted structure.
Further, as shown in FIG. 18, the electronic atomization apparatus 300 in some embodiments further includes an air flow controller 230. The air flow controller 230 is disposed on a path in communication with the outside by the air inlet hole 46, and is configured to open a gas path of the electronic atomization apparatus 300 under a suction force generated by suction for the electronic atomization apparatus 300, and close the gas path of the electronic atomization apparatus 300 without the suction force. Specifically, when the air flow controller 230 detects the suction force of the electronic atomization apparatus 300, the air flow controller 230 opens the gas path, in this way, the air flow enters the atomizer 100 from the air inlet hole 46, and the flowing air flow drives the generated aerosol to flow out of the aerosol passage 14 for the user to suck. When the air flow controller 230 does not detect the suction force of the electronic atomization apparatus 300, the air flow controller 230 closes the gas path, so as to prevent aerosol from flowing out from the aerosol passage 14, thereby saving the e-liquid.
Different from the related art, the present disclosure discloses an atomization core, an atomizer, and an electronic atomization apparatus. By defining that the porous matrix of the atomization core includes the liquid guide part and the vent part, where the vent part has a lyophobic ventilation characteristic, in this way, when the liquid guide part guides the liquid in the liquid storage cavity from the liquid absorbing surface to the atomization surface, the external gas may be guided to the liquid storage cavity by using the vent part, so as to resolve the problem that liquid discharge is not smooth because air pressure in the liquid storage cavity is too low when the atomization core guides the liquid, thereby facilitating a return rise of the air pressure in the liquid storage cavity and enabling the liquid to be smoothly guided to the atomization surface from the liquid absorbing surface. Therefore, the atomization core provided in the present disclosure may supply air to the liquid storage cavity on the side of the liquid absorbing surface, thereby improving an air pressure condition of the liquid storage cavity, so as to avoid the case that liquid discharge is not smooth due to a low air pressure in the liquid storage cavity.
The foregoing descriptions are merely embodiments of the present disclosure, and the patent scope of the present disclosure is not limited thereto. All equivalent structure or process changes made according to the content of this specification and accompanying drawings in the present disclosure or by directly or indirectly applying the present disclosure in other related technical fields shall similarly fall within the patent protection scope of the present disclosure.

Claims

An atomization core applied to an electronic atomization apparatus, characterized in that the atomization core comprises a porous matrix and a heating element,
wherein the porous matrix comprises:
a liquid guide part comprising a liquid absorbing surface for absorbing a liquid substrate and an atomization surface on which the heating element is disposed, wherein the liquid guide part is configured to conduct the liquid substrate on the side of the liquid absorbing surface to the atomization surface; and

a vent part connected to the liquid guide part, wherein the vent part has a lyophobic ventilation characteristic, the vent part comprises an air inlet surface and an air outlet surface, the air inlet surface is configured to contact gas, the air outlet surface is configured to be exposed to a liquid storage cavity, and the vent part is configured to conduct the gas on the side of the air inlet surface to the air outlet surface.
The atomization core of claim 1, wherein the porous matrix comprises a first surface and a second surface opposite to the first surface, the liquid absorbing surface and the air outlet surface are both located on the first surface, and the air inlet surface and the atomization surface are located on the second surface.
The atomization core of claim 1, wherein the vent part is extended from the air outlet surface to the air inlet surface.
The atomization core of claim 1, wherein the porous matrix comprises a first surface, a second surface, and a side surface, the second surface is opposite to the first surface, and the side surface is connected to the first surface and the second surface; and both the liquid absorbing surface and the air outlet surface are located on the first surface, the air inlet surface is located on the side surface, and the atomization surface is located on the second surface.
The atomization core of claim 1, wherein the porous matrix comprises a first surface, a second surface, and a side surface, the second surface is opposite to the first surface, and the side surface is connected to the first surface and the second surface; and the air outlet surface is located on the side surface, the air inlet surface and the atomization surface are located on the second surface, and the liquid absorbing surface is located on the first surface and/or the side surface.
The atomization core of claim 1, wherein the porous matrix comprises a first surface, a second surface, and a side surface, the second surface is opposite to the first surface, and the side surface is connected to the first surface and the second surface; and both the air inlet surface and the air outlet surface are located on the side surface, and the atomization surface is located on the second surface, and the liquid absorbing surface is located on the first surface and/or the side surface.
The atomization core of claim 1, wherein the porous matrix comprises a first surface and a second surface opposite to the first surface, the air inlet surface and the air outlet surface are both located on the first surface, the liquid absorbing surface is located on the first surface and/or the side surface, the vent part is spaced apart from the second surface, and the atomization surface is located on the second surface.
The atomization core of any one of claims 2-6, wherein the vent part is arranged in an annular shape around the outer surface of the liquid guide part; or
a plurality of vent parts are provided and circumferentially spaced apart from each other along the side surface of the porous matrix.
The atomization core of claim 2, wherein the porous matrix further comprises a side surface, and two opposite sides of the side surface are respectively connected to the first surface and the second surface; and the vent part is spaced apart from the side surface.
The atomization core of claim 1, wherein the liquid guide part comprises a body and a protrusion integrated in one structure, the body is provided with a groove, the heating element is disposed on the side of the protrusion away from the groove, and the vent part is disposed on the outer surface of the body.
The atomization core of claim 1, wherein the porous matrix is an integrally formed component.
An atomizer, characterized in that the atomizer comprises the atomization core according to any one of claims 1 to 11, a liquid storage cavity is formed in the atomizer, and the liquid absorbing surface and the air outlet surface are exposed to a liquid substrate in communication with the liquid storage cavity.
An electronic atomization apparatus, characterized in that the electronic atomization apparatus comprises a power supply assembly and the atomizer of claim 12, wherein the power supply assembly is electrically connected to the atomizer, and is configured to supply power to the atomization core of the atomizer.