EP4643683A1

EP4643683A1 - Atomizer and electronic atomization device

Info

Publication number: EP4643683A1
Application number: EP23922523.8A
Authority: EP
Inventors: Rui Hong; Yongqiang Liu; Ruilong HU; Zhongli XU; Yonghai LI
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2023-02-13
Filing date: 2023-12-25
Publication date: 2025-11-05
Also published as: WO2024169408A1; CN118476654A

Abstract

An atomizer and an electronic atomization device are provided. The atomizer (100) includes: a liquid storage cavity, configured to store a liquid substrate; a heating element (60), configured to heat the liquid substrate to generate an aerosol; and an air inlet (25a), a inhalation port (111a), and an airflow channel, where the aerosol is transferred to the inhalation port (111a) through the airflow channel, where the heating element (60) includes a first surface and a second surface that are opposite to each other, and piercings (631) running from the first surface to the second surface; the first surface is in communication with the liquid storage cavity or is exposed to the liquid storage cavity; the second surface is in communication with the airflow channel or is exposed to the airflow channel; and the piercings (631) have such a pore size or width size feature, to enable the heating element (60) to allow the aerosol to pass through the piercings (631) and prevent the liquid substrate from flowing through the piercings (631). Through the piercings (631) of the heating element (60), the atomizer (100) provides a channel through which the aerosol passes from the first surface to the second surface, and prevents the liquid substrate from flowing through. A power supply mechanism (200b) of the electronic atomization device includes: a receiving cavity (270b) located at a proximal end (2110b), a support element (280b), and an induction coil (260b).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202310136905.0, entitled "ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE" filed with the China National Intellectual Property Administration on February 13, 2023 , which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

Embodiments of this application relate to the field of electronic atomization technologies, and in particular, to an atomizer and an electronic atomization device.

BACKGROUND

During use of tobacco products (for example, cigarettes and cigars), tobacco is burned to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by making products that release compounds without burning.
An example of such a product is an electronic atomization device. These electronic atomization devices usually contain a liquid. The liquid is heated to be atomized, so as to generate an inhalable aerosol. Through a liquid storage cavity for storing a liquid substrate, these devices receive and store the liquid substrate from the liquid storage cavity by using a capillary liquid guide element. In addition, a heating element is combined on the capillary liquid guide element, to heat at least a part of the liquid substrate in the capillary liquid guide element to generate the aerosol. In a known electronic atomization device, the capillary liquid guide element prevents the liquid substrate in the liquid storage cavity from leaking.

SUMMARY

An embodiment of this application provides an atomizer, including:

a liquid storage cavity, configured to store a liquid substrate;
a heating element, configured to heat the liquid substrate to generate an aerosol; and
an air inlet, an inhalation port, and an airflow channel located between the air inlet and the inhalation port, where the airflow channel defines an airflow path from the air inlet to the inhalation port through the heating element, to transfer the aerosol to the inhalation port; and
the heating element includes a first surface and a second surface that are opposite to each other, and piercings running from the first surface to the second surface, where the first surface is in communication with the liquid storage cavity or is exposed to the liquid storage cavity; the second surface is in communication with the airflow channel or is exposed to the airflow channel; and
the piercings have such a pore size or width size feature, where the pore size or width size feature enables the heating element to allow the aerosol to pass through the piercings and prevent the liquid substrate from flowing through the piercings.

In some embodiments, the pore size or the width size of the piercing ranges from 1 µm to 500 µm.
In some embodiments, there is no capillary liquid guide element configured to transfer the liquid substrate from the liquid storage cavity to the heating element in the atomizer; or
there is no capillary liquid guide element combined on the heating element in the atomizer.
In some embodiments, the second surface of the heating element surrounds or defines a part of the airflow channel.
In some embodiments, the atomizer further includes:

a partition wall, configured to isolate the liquid storage cavity from the airflow channel, where
the heating element is held on the partition wall.

In some embodiments, the atomizer further includes:
at least one flexible sealing element, located between the partition wall and the heating element for providing sealing between the partition wall and the heating element.
In some embodiments, the partition wall is formed by molding a moldable material around at least a part of the heating element, and is coupled to the heating element.
In some embodiments, the partition wall and the heating element are non-detachable or inseparable.
In some embodiments, the piercings are provided in an array, to enable the heating element to form a grid pattern.
In some embodiments, the heating element is an induction heating element capable of being penetrated by a changing magnetic field to generate heat.
In some embodiments, the heating element is configured to be in a shape of a tube; and one of an outer surface and an inner surface of the heating element defines the first surface, and the other of the outer surface and the inner surface of the heating element defines the second surface.
In some embodiments, the heating element is a planar-extending heating element.
In some implementations, the atomizer further includes:
an induction coil, configured to generate the changing magnetic field, where an axial length of the induction coil is less than a length of the induction heating element.
In some embodiments, the heating element has a first end and a second end that are opposite to each other, and the heating element includes:

a first part, close to the first end;
a second part, close to the second end; and
a third part, located between the first part and the second part.

In some embodiments, the piercings are provided in the third part and avoid the first part and the second part.
In some embodiments, the atomizer holds the first part and/or the second part, to hold the heating element in the atomizer.
Still another embodiment of this application further provides an electronic atomization device, including the foregoing atomizer and a power supply mechanism configured to supply power to the atomizer.
Still another embodiment of this application further provides an electronic atomization device, including:

a liquid storage cavity, configured to store a liquid substrate;
an induction heating element, capable of being penetrated by a changing magnetic field to generate heat, to heat the liquid substrate to generate an aerosol; and
an induction coil, configured to generate the changing magnetic field, where an axial length of the induction coil is less than a length of the induction heating element.

In some embodiments, the induction coil surrounds a part of the induction heating element.
In some embodiments, the induction coil is located on an inner side of the induction heating element and generates the changing magnetic field in the induction heating element.
In some embodiments, the induction heating element has a first end and a second end that are opposite to each other, and the induction heating element includes:

a first part, close to the first end;
a second part, close to the second end; and
a third part, located between the first part and the second part, where
the induction coil is opposite to the third part and avoids the first part and the second part. In some embodiments, the first part and the second part are dense; and
the third part is provided with several piercings.

In some embodiments, the first part and the second part are non-inductive.
In some embodiments, the first part, the second part, and the third part are independently made in decibels, and then are combined in a mechanical manner such as riveting. In some embodiments, the first part and the second part are independently made of a material such as a heat-resistant ceramic or polyetheretherketone (PEEK), and the third part is made of an inductive metal or alloy.
In some embodiments, the electronic atomization device holds the first part and/or the second part, to hold the heating element in the electronic atomization device.
In some implementations, the electronic atomization device further includes:

an air inlet, an inhalation port, and an airflow channel located between the air inlet and the inhalation port, where the airflow channel defines an airflow path from the air inlet to the inhalation port through the heating element, to transfer the aerosol to the inhalation port; and
the heating element includes a first surface and a second surface that are opposite to each other, and piercings running from the first surface to the second surface, where the first surface is in communication with the liquid storage cavity or is exposed to the liquid storage cavity; the second surface is in communication with the airflow channel or is exposed to the airflow channel; and
the piercings have such a pore size or width size feature, where the pore size or width size feature enables the heating element to allow the aerosol to pass through the piercings and prevent the liquid substrate from flowing through the piercings.

In some embodiments, the electronic atomization device includes:

an atomizer, configured to atomize the liquid substrate to generate the aerosol; and
a power supply mechanism, including:
- a receiving cavity, having an opening, where during use, at least a part of the atomizer is removably received in the receiving cavity through the opening;
- the liquid storage cavity and the induction heating element are arranged on the atomizer;
- the induction coil is arranged on the power supply mechanism; and
- when the atomizer is received in the receiving cavity, the induction heating element can be penetrated by the changing magnetic field generated by the induction coil to generate heat.

In some embodiments, when the atomizer is received in the receiving cavity, the induction coil surrounds or encloses a part of the induction heating element.
In some embodiments, when the atomizer is received in the receiving cavity, the induction coil is located on an inner side of the induction heating element and generates the changing magnetic field in the induction heating element.
Through the piercings of the heating element, the foregoing atomizer provides a channel through which the aerosol passes from the first surface to the second surface, and prevents the liquid substrate from flowing through.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are exemplarily described with reference to corresponding figures in the accompanying drawings, and the descriptions do not constitute a limitation to the embodiments. Elements in the accompanying drawings that have same reference numerals are represented as similar elements, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.

FIG. 1 is a schematic diagram of an electronic atomization device according to an embodiment;
FIG. 2 is a schematic diagram of an atomizer in FIG. 1 according to an embodiment;
FIG. 3 is a schematic diagram of a heating element in FIG. 2 from another perspective;
FIG. 4 is a schematic diagram of an atomizer in FIG. 1 according to another embodiment;
FIG. 5 is a schematic exploded view of a partition element and a heating element in FIG. 4 before being assembled;
FIG. 6 is a schematic diagram of an electronic atomization device according to another embodiment;
FIG. 7 is a schematic diagram showing that an atomizer is received in a receiving cavity of a power supply mechanism in FIG. 6;
FIG. 8 is a schematic diagram of a power supply mechanism according to another embodiment; and
FIG. 9 is a schematic exploded view of each part of a heating element before being assembled according to another embodiment.

DETAILED DESCRIPTION

For ease of understanding of this application, this application is described in more detail below with reference to the accompanying drawings and specific implementations.
An embodiment of this application provides an electronic atomization device, configured to atomize a liquid substrate to generate an aerosol. In some embodiments, the electronic atomization device may include two or more parts that are separated from each other or replaced with each other. When the two or more parts are combined, a complete combined use state of the electronic atomization device is formed, and it can then generate the aerosol in response to user operation.
Further, FIG. 1 is a schematic diagram of an electronic atomization device according to an embodiment. In this embodiment, the electronic atomization device includes: an atomizer 100 configured to atomize a liquid substrate to generate an aerosol and a power supply mechanism 200 configured to supply power to the atomizer.
Further, as shown in FIG. 1, the power supply mechanism 200 includes:
a proximal end 2110 and a distal end 2120 that are opposite to each other along a longitudinal direction, where during use, the proximal end 2110 is an end configured to receive the atomizer 100.
Further, as shown in FIG. 1, the power supply mechanism 200 further includes:
a receiving cavity 270, where the receiving cavity 270 is provided adjacent to the proximal end 2110, and is provided and extended along a longitudinal direction of the power supply mechanism 200; the receiving cavity 270 has an opening facing the longitudinal direction or located at the proximal end 2110; and during use, the atomizer 100 can be received in the receiving cavity 270 through the opening, or can be removed from the receiving cavity 270.
Further, as shown in FIG. 1, the power supply mechanism 200 further includes:

a rechargeable battery cell 210, configured to output power, where the battery cell 210 is arranged close to the distal end 2120; and
a charging interface 240, configured to charge the rechargeable battery cell 210, where the charging interface 240 is arranged between the battery cell 210 and the distal end 2120.

In addition, in an embodiment, a direct current supply voltage provided by the battery cell 210 ranges from about 2.5 V to about 9.0 V, and an amperage of a direct current that can be provided by the battery cell 210 ranges from about 2.5 A to about 20 A.
Further, as shown in FIG. 1, the power supply mechanism 200 further includes:
a circuit 220, where the circuit 220 is integrated or arranged on a circuit board, for example, a printed circuit board (PCB), and is configured to control operation of the power supply mechanism 200, and particularly, the circuit 220 controls power output by the battery cell 210. In addition, in FIG. 1, the circuit 220 is located between the battery cell 210 and the receiving cavity 270.
Further, as shown in FIG. 1, the power supply mechanism 200 further includes:
an airflow sensor 250, for example, a microphone/micro-electromechanical systems (MEMS) sensor, where the airflow sensor 250 is configured to sense an inhalation airflow passing through the atomizer 100 when a user performs inhalation by using the atomizer 100; and the circuit 220 further controls, based on a sensing result of the airflow sensor 250, the battery cell 210 to output power. In an embodiment shown in FIG. 1, the airflow sensor 250 is arranged between the battery cell 210 and the receiving cavity 270. In addition, in some other variant embodiments, the airflow sensor 250 may alternatively be assembled, fastened, or combined on the circuit board on which the circuit 220 is arranged. Alternatively, in some other variant embodiments, the airflow sensor 250 is supported and fixed in the power supply mechanism 200 by an independent support element, for example, a plastic bracket.
In some embodiments, the power supply mechanism 200 generates a changing magnetic field that passes through the receiving cavity 270, to induce the atomizer 100 to heat and atomize the liquid substrate. Specifically, an induction heating element may be arranged in the atomizer 100. When received in the receiving cavity 270, the atomizer 100 can be penetrated by the changing magnetic field to generate heat, so as to heat the liquid substrate to generate the aerosol. Alternatively, in some embodiments, the power supply mechanism 200 provides a direct current for a resistance heating element in the atomizer 100, to enable the atomizer 100 to heat the liquid substrate.
Further, as shown in FIG. 1, the power supply mechanism 200 further includes:

an induction coil 260, arranged around the receiving cavity 270; and
the circuit 220, where the circuit 220 can include a capacitor, and form an LC resonance circuit or an LCC resonance circuit with the induction coil 260 through the capacitor. For example, the circuit 220 drives, based on a predetermined frequency, the LC resonance circuit to vibrate, to form an alternating current flowing through the induction coil 260, so that the induction coil 260 can generate a changing magnetic field that can penetrate the receiving cavity 270. In some embodiments, a frequency of the alternating current supplied by the circuit 220 to the induction coil 260 ranges from 80 KHz to 2000 KHz. More specifically, the frequency may range from about 600 KHz to about 1500 KHz.

In addition, in some embodiments, the induction coil 260 is wrapped by a wire material with low resistivity, for example, a copper wire or a silver wire. In addition, in some other embodiments, the induction coil 260 is wrapped by a Litz wire. A Litz wire having a plurality of strings of wires is more advantageous for carrying an alternating current.
Further, FIG. 2 is a schematic diagram of an atomizer 100 according to an embodiment. The atomizer 100 in this embodiment includes:

a first end 110 and a second end 120 that are opposite to each other along a longitudinal direction; and
a housing, extending between the first end 110 and the second end 120, where the housing defines an outer surface of the atomizer 100. Specifically, the housing includes:
a first housing 10, close to and defining the first end 110; and a second housing 20, close to and defining the first end 120. The first housing 10 and the second housing 20 are constructed as hollow cylinders; the first housing 10 at least partially surrounds the second housing 20; and a flexible sealing element 30 is further arranged between the first housing 10 and the second housing 20 for providing sealing between the first housing 10 and the second housing 20. An inhalation port 111 located at the first end 110 is defined on the first housing 10, for a user to perform inhalation.

In addition, the first housing 10 is provided with:
a first partition wall 11, extending along a longitudinal direction of the first housing 10, where the first partition wall 11 and the first housing 10 are integrally molded, for example, molded by a material such as a polymer or a ceramic; and the first partition wall 11 extends from the inhalation port 111 facing away from the first end 110. A first storage space 12 is defined between the first partition wall 11 and the first housing 10.
In addition, the second housing 20 is provided with:
a second partition wall 21, extending along a longitudinal direction of the second housing 20. A second storage space 22 is defined between the second partition wall 21 and the second housing 20. In addition, after assembly, the first partition wall 11 and the second partition wall 22 are longitudinally aligned and joined, and the first partition wall 11 and the second partition wall 22 are in communication with each other. A gap between the first partition wall 11 and the second partition wall 22 is sealed by the sealing element 30.
In addition, after assembly, the first storage space 12 and the second storage space 22 are aligned and joined. Further, after assembly, the first storage space 12 and the second storage space 22 jointly define a liquid storage cavity, to store a liquid substrate.
Further, according to the embodiment shown in FIG. 2, the atomizer 100 further includes:
a heating element 60, located inside the second partition wall 22, where the heating element 60 is substantially coaxially arranged with the second partition wall 22; and the heating element 60 extends along a longitudinal direction of the second partition wall 22. In addition, in this embodiment, the heating element 60 is an induction heating element that can be penetrated by a changing magnetic field to generate heat. The heating element 60 is made of an inductive metal or alloy. For example, the heating element 60 may be made of stainless steel of a level 430 (SS430), stainless steel of a level 420 (SS420), or an alloy material (for example, permalloy) containing iron and nickel.
In addition, in some specific embodiments, the heating element 60 has a length ranging from 2 mm to 15 mm; the heating element 60 has an inner diameter ranging from 1.5 mm to 8 mm; and a thickness of the partition wall of the heating element 60 ranges from 0.05 mm to 0.2 mm. For example, in some specific embodiments, the heating element 60 has a length ranging from 4 mm to 8 mm.
Alternatively, in some other embodiments, the heating element 60 may further have a longer length. For example, the heating element 60 may extend from the first end 110 to the second end 120. An airflow channel extending from the first end 110 to the second end 120 is surrounded and defined by the heating element 60.
Further, as shown in FIG. 3, the heating element 60 is in a shape of a tube that is closed in a circumferential direction. In addition, the heating element 60 has a first part 61 and a second part 62 that are distributed along a longitudinal direction, and a third part 63 that is located between the first part 61 and the second part 62. The third part 63 is provided with several piercings 631 running through the heating element 60 along a radial direction, so that the third part 63 is basically is a mesh shape. The foregoing several piercings 631 provided in an array can reduce mass of the heating element 60, thereby facilitating improving efficiency of temperature increase of the third part 63 during induction heating. There is no piercing 631 on the first part 61 and the second part 62, and the first part 61 and the second part 62 are dense. In addition, in some embodiments, a length of the third part 63 is greater than a length of the first part 61 and/or the second part 62. For example, in a specific embodiment, the length of the third part 63 is 2.0 mm, and the length of the first part 61 and/or the second part 62 is 1.5 mm.
In some embodiments, the first part 61, the second part 62, and the third part 63 of the heating element 60 are integrally made of a same material. For another example, in some variant embodiments, the first part 61, the second part 62, and the third part 63 of the heating element 60 are independently made of different materials, and then are combined and assembled to form one piece in a mechanical manner such as riveting. For example, FIG. 9 is a schematic exploded view of a first part 61, a second part 62, and a third part 63 of a heating element 60 before being assembled according to this embodiment. The first part 61 and the second part 62 are independently made of a material such as a heat-resistant ceramic or PEEK, and the third part 63 is inductive for generating heat. In addition, in some embodiments, the first part 61 and the second part 62 are non-inductive materials for reducing heat loss at an end portion, for example, high-temperature-resistant plastic injection molding, or a non-inductive metal material, to reduce mass of the heating element 60 that generates heat, thereby improving efficiency. Alternatively, the first part 61 and the second part 62 may also be made of another material having a low thermal conductivity.
In addition, in this embodiment, an extension length of an induction coil 260 is 10 mm. A length of the heating element 60 is less than the length of the induction coil 260. Therefore, when the atomizer 100 is received in a receiving cavity 270, the heating element 60 is basically completely located in the induction coil 260. Alternatively, in some other variant embodiments, when the atomizer 100 is received in the receiving cavity 270, the heating element 60 may be partially located in the induction coil 260, and partially extends out of the induction coil 260, but it is preferred to keep the third part 63 entirely located in the induction coil 260.
Alternatively, in some other variant embodiments, the extension length of the induction coil 260 is less than the length of the heating element 60. Therefore, when the atomizer 100 is received in the receiving cavity 270, the induction coil 260 can only surround a part of the heating element 60. For example, when the atomizer 100 is received in the receiving cavity 270, the induction coil 260 surrounds the third part 63 of the heating element 60, and avoids the first part 61 and the second part 62.
In an exemplary embodiment, the atomizer 100 further includes:

a flexible sealing element 51, located between the first part 61 of the heating element 60 and the second partition wall 21 for providing sealing between the first part 61 of the heating element 60 and the second partition wall 21; and
a flexible sealing element 52, located between the second part 62 of the heating element 60 and the second partition wall 21 for providing sealing between the second part 62 of the heating element 60 and the second partition wall 21.

In an optional example, the sealing element 51 and/or the sealing element 52 are/is made of flexible silica gel, a thermoplastic elastomer, or the like, or are/is made of a flexible material having a liquid holding capability, for example, a flexible porous material or a flexible fiber material. Further, after assembly, the sealing element 51 and the sealing element 52 elastically hold the heating element 60 inside the second partition wall 21. In addition, the sealing element 51 and the sealing element 52 provide isolation between the heating element 60 and the second partition wall 21, so that an interval space 40 is formed between the heating element 60 and the second partition wall 21. In addition, two sides of the interval space 40 are respectively sealed by the sealing element 51 and the sealing element 52.
In addition, the second partition wall 21 is provided with a communication hole 211 running through the second partition wall 21 along a radial direction, and the communication hole 211 is aligned with the interval space 40. Further, during use, the liquid substrate in the liquid storage cavity can enter the interval space 40 through the communication hole 211 and surround and come into contact with an outer surface of the heating element 60.
Alternatively, in some other variant embodiments, the foregoing heating element 60 and the second partition wall 21 of the second housing 20 are integrally formed. For example, the heating element 60 that is made of a metal material and the second housing 20 that is made of a plastic material are integrally molded through so-called "metal insert injection molding", so that the second partition wall 21 of the second housing 20 surrounds and is coupled to the first part 61 and the second part 62 of the heating element 60, and avoids the third part 63, to enable the heating element 60 to be fastened and combined with the second partition wall 21. The heating element 60 and the second partition wall 21 are molded into an integral structure, which is advantageous for maintaining consistency of assembly of the heating element 60 into the housing, and improving an overlap degree of a relative position, for example, a central axis overlap degree, between the induction coil 260 and the heating element 60, thereby improving efficiency of induction heating.
During inhaling, air enters from an air inlet 25 on the second housing 20, passes through the tube-shaped heating element 60, sequentially passes through the second partition wall 21 and the first partition wall 11, and then is output to the inhalation port 111. During use, the heating element 60, the second partition wall 21, and the first partition wall 11 jointly surround and define an airflow channel passing through the atomizer 100 during inhaling.
In some embodiments, the outer surface of the heating element 60 is directly exposed to and in contact with the liquid substrate, and particularly, an outer surface of the third part 63 is directly exposed to and in contact with the liquid substrate. In addition, there is no capillary liquid guide element, for example, fiber cotton, a sponge, or a porous ceramic body, configured to transfer the liquid substrate between the heating element 60 and the liquid storage cavity. After assembly, the heating element 60 covers or closes a liquid outlet of the liquid storage cavity. In addition, there is no capillary liquid guide element that transfers the liquid substrate from the liquid storage cavity to the heating element 60 in the atomizer 100.
In addition, an inner surface of the heating element 60 is exposed to the airflow channel, and particularly, an inner surface of the third part 63 is exposed to the airflow channel.
In addition, in some embodiments, the piercings 631 on the third part 63 have such a pore size or width size feature. The pore size or width size feature can prevent the liquid substrate from flowing through the piercings 631, and in this case, the aerosol generated by heating and atomizing the liquid substrate can flow through the piercings 631. Further, in some embodiments, the piercings 631 not only can prevent liquid leakage, but also can release the aerosol to the airflow channel.
In some embodiments, the piercing 631 is usually in a shape of a tiny circle, a regular polygon, or the like. Alternatively, in some other embodiments, the piercing 631 may be in a shape of a rectangle, a polygon, or in an irregular shape such as a slender gap.
Specifically, in some specific embodiments, a diameter or a width of the piercing 631 ranges from 1 µm to 500 µm. Alternatively, further, the diameter or the width of the piercing 631 ranges from 5 µm to 250 µm. Alternatively, further, the diameter or the width of the piercing 631 ranges from 10 µm to 150 µm. Alternatively, further, the diameter or the width of the piercing 631 ranges from 20 µm to 60 µm. The piercing 631 having the foregoing diameter range can prevent the liquid substrate from flowing through and allow the aerosol to flow through.
In addition, in the foregoing embodiment, the piercings 631 are provided in an array. The piercings 631 are in a shape of an array, to enable the third part 63 and/or the heating element 60 to form a grid pattern.
Further, FIG. 4 is a schematic diagram of an atomizer 100 according to another embodiment. In this embodiment, the atomizer 100 includes:

a first end 110a and a second end 120a that are opposite to each other along a longitudinal direction; and
a housing jointly defined by a first housing 10a and a second housing 20a, where the first housing 10a is close to and defines the first end 110a; and the second housing 20a is close to and defines the first end 120a.

In addition, a flexible sealing element 30a is further arranged between the first housing 10a and the second housing 20a for providing sealing between the first housing 10a and the second housing 20a. An inhalation port 111a located at the first end 110a is defined on the first housing 10a, for a user to perform inhalation.
In addition, the first housing 10a is provided with a first partition wall 11a, and a first storage space 12a is defined between the first partition wall 11a and the first housing 10a.
The second housing 20a is provided with:
a partition element 21a extending along the longitudinal direction, which defines a space in the second housing 20a to form a second storage space 22a and a channel space 23a that are respectively located on an inner side and an outer side of the partition element 21a.
After assembly, the second storage space 22a is in communication with the first storage space 12a, so that the second storage space 22a and the first storage space 12a jointly define a liquid storage cavity in the atomizer 100, to store a liquid substrate. In addition, the channel space 23a is in communication with a hollow of the first partition wall 11a, so that the channel space 23a and the first partition wall 11a form an airflow channel located between an air inlet 25a and the inhalation port 111a, to output an aerosol.
Further, as shown in FIG. 4 and FIG. 5, the partition element 21a has a partition wall 211a that basically extends straightly, and the second storage space 22a and the channel space 23a are defined by two sides of the partition wall 211a. A window 212a is provided on the partition wall 211a. A sheet-shaped heating element 60a is combined on the partition wall 211a through insert injection molding or the like, and covers or crosses the window 212a.
In this embodiment, the sheet-shaped heating element 60a has a length approximately ranging from 3 mm to 8 mm; the heating element 60a has a width ranging from 1.5 mm to 5 mm; and a thickness of the heating element 60a ranges from 0.05 mm to 0.2 mm. Alternatively, the heating element 60a is a planar heating element.
Specifically, the heating element 60a has an edge part 61a and a central part 63a surrounded by the edge part 61a. In some embodiments, the partition wall 211a and/or the partition element 21a are/is injection-molded around the edge part 61a by using a moldable material and are/is coupled to the edge part 61a. The central part 63a is provided with several piercings 631a. In addition, the heating element 60a and the partition wall 211a are non-detachable or inseparable; and at least a part of the heating element 60a is inserted into the partition wall 211a.
In some embodiments, when the atomizer 100 is received in a receiving cavity 270, the heating element 60a is at least partially located in an induction coil 260. Specifically, the central part 63a is located in the induction coil 260 for generating heat.
After assembly, a first side surface of the heating element 60a is exposed to the liquid storage cavity or the second storage space 22a, and a diameter of the piercing 631a can prevent the liquid substrate from flowing through. A second side surface of the heating element 60a is exposed to the channel space 23a or the airflow channel for releasing an aerosol that passes through the piercings 631a to the airflow channel.
In addition, in some embodiments, the piercings 631a have such a width size feature. The width size feature can prevent the liquid substrate from flowing through the piercings 631a, and in this case, the aerosol generated by heating and atomizing the liquid substrate can flow through the piercings 631a. Further, in some embodiments, the piercings 631a not only can prevent liquid leakage, but also can release the aerosol to the airflow channel.
Specifically, in some specific embodiments, the diameter of the piercing 631a ranges from 1 µm to 500 µm. Alternatively, further, the diameter of the piercing 631a ranges from 5 µm to 250 µm. Alternatively, further, the diameter of the piercing 631a ranges from 10 µm to 150 µm. Alternatively, further, the diameter of the piercing 631a ranges from 20 µm to 60 µm. The piercing 631a having the foregoing diameter range can prevent the liquid substrate from flowing through and allow the aerosol to flow through.
Alternatively, in some other variant embodiments, the heating element 60a may be further configured to be arranged perpendicular to the longitudinal direction of the atomizer 100.
Further, FIG. 6 and FIG 7 are schematic diagrams of an electronic atomization device according to another embodiment. In this embodiment, an atomizer 100b of the electronic atomization device includes:

a housing 10b, having an inhalation port 111b located at a first end;
a partition wall 11b, extending along a longitudinal direction of the housing 10b, where the partition wall 11b at least partially defines an airflow channel passing through the atomizer 100b, to output an aerosol to the inhalation port 111b;
a liquid storage cavity 12b, located in the housing 10b and provided around the partition wall 11b, where the liquid storage cavity 12b is configured to store a liquid substrate; and
a heating element 60b, configured to be in a shape of a meshed tube, and combined on the partition wall 11b through molding, inserting, or the like. Alternatively, in some other variant embodiments, the heating element 60b may have a longer length, for example, at least 10 mm, and for another example, at least 20 mm. The liquid storage cavity 12b is defined and formed between the heating element 60b and the housing 10b, and the partition wall 11b is not needed.

In this embodiment, a power supply mechanism 200b of the electronic atomization device includes:

a receiving cavity 270b located at a proximal end 2110b;
a support element 280b, at least partially extending in the receiving cavity 270b, where the support element 280b may be configured to be a shape of a longitudinal pin, needle, or the like; and
an induction coil 260b, wrapped or surrounding and held outside the support element 280b.

When the atomizer 100b is received in the receiving cavity 270b, at least a part of the induction coil 260b can extend into the heating element 60b, to generate a changing magnetic field in the heating element 60b.
In addition, in this embodiment, an axial length d2 of the induction coil 260b is less than a length d1 of the heating element 60b. In this case, during heating, energy of the magnetic field generated by the induction coil 260b is more concentrated, and the magnetic field is basically located in the heating element 60b. This is advantageous for improving magnetic energy utilization and reducing magnetic leakage. For example, the axial length d2 of the induction coil 260b is approximately equal to an axial length of a third part having piercings on the heating element 60b. For example, in some specific embodiments, the length d1 of the heating element 60b is 6 mm; and the axial length d2 of the induction coil 260b is 3 mm.
In addition, in this embodiment, the heating element 60b and the partition wall 11b of the atomizer 100b are integrally molded through a process such as metal insert injection molding. In addition, the heating element 60b may be in a shape of a meshed tube. In addition, an outer surface of the heating element 60b is exposed to the liquid storage cavity 12b, and an inner surface of the heating element 60b is exposed to the airflow channel.
Alternatively, further, FIG. 8 is a schematic diagram of a power supply mechanism 200c according to another embodiment. The power supply mechanism 200c in this embodiment includes:

a receiving cavity 270c, located at a proximal end 2110c;
a support element 280c, at least partially extending in the receiving cavity 270c, where the support element 280c may be configured to be a shape of a longitudinal pin, needle, or the like; and a hollow 281c extending along a longitudinal direction is defined in the support element 280c; and
an induction coil 260c, configured to generate a changing magnetic field, where the induction coil 260c is accommodated and held in the hollow 281c of the support element 280c.

It should be noted that, the specification of this application and the accompanying drawings thereof illustrate preferred embodiments of this application, but this application is not limited to the embodiments described in the specification. Further, for a person of ordinary skill in the art, improvements or modifications may be made according to the foregoing descriptions, and all these improvements and modifications shall fall within the protection scope of the appended claims of this application.

Claims

An atomizer, comprising:
a liquid storage cavity, configured to store a liquid substrate;

a heating element, configured to heat the liquid substrate to generate an aerosol; and

an air inlet, an inhalation port, and an airflow channel located between the air inlet and the inhalation port, wherein the airflow channel defines an airflow path from the air inlet to the inhalation port through the heating element, to transfer the aerosol to the inhalation port; and

the heating element comprises a first surface and a second surface that are opposite to each other, and piercings running from the first surface to the second surface, wherein the first surface is in communication with the liquid storage cavity or is exposed to the liquid storage cavity; the second surface is in communication with the airflow channel or is exposed to the airflow channel; and

the piercings have such a pore size or width size feature, wherein the pore size or width size feature enables the heating element to allow the aerosol to pass through the piercings and prevent the liquid substrate from flowing through the piercings.
The atomizer according to claim 1, wherein the pore size or the width size of the piercing ranges from 1 µm to 500 µm.
The atomizer according to claim 1 or 2, wherein there is no capillary liquid guide element configured to transfer the liquid substrate from the liquid storage cavity to the heating element in the atomizer; or
there is no capillary liquid guide element combined on the heating element in the atomizer.
The atomizer according to claim 1 or 2, wherein the second surface of the heating element surrounds or defines a part of the airflow channel.
The atomizer according to claim 1 or 2, further comprising:
a partition wall, configured to isolate the liquid storage cavity from the airflow channel, wherein

the heating element is held on the partition wall.
The atomizer according to claim 5, further comprising:
at least one flexible sealing element, located between the partition wall and the heating element for providing sealing between the partition wall and the heating element.
The atomizer according to claim 5, wherein the partition wall is formed by molding a moldable material around at least a part of the heating element, and is coupled to the heating element.
The atomizer according to claim 7, wherein the partition wall and the heating element are non-detachable or inseparable.
The atomizer according to claim 1 or 2, wherein the piercings are provided in an array, to enable the heating element to form a grid pattern.
The atomizer according to claim 1 or 2, wherein the heating element is an induction heating element capable of being penetrated by a changing magnetic field to generate heat.
The atomizer according to claim 1 or 2, wherein the heating element is configured to be in a shape of a tube; and one of an outer surface and an inner surface of the heating element defines the first surface, and the other of the outer surface and the inner surface of the heating element defines the second surface.
The atomizer according to claim 1 or 2, wherein the heating element is a planar-extending heating element.
The atomizer according to claim 10, further comprising:
an induction coil, configured to generate the changing magnetic field, wherein an axial length of the induction coil is less than a length of the induction heating element.
The atomizer according to claim 1 or 2, wherein the heating element has a first end and a second end that are opposite to each other, and the heating element comprises:
a first part, close to the first end;

a second part, close to the second end; and

a third part, located between the first part and the second part, wherein the piercings are provided in the third part and avoid the first part and the second part.
The atomizer according to claim 14, wherein the atomizer holds the first part and/or the second part, to hold the heating element in the atomizer.
An electronic atomization device, comprising the atomizer according to any one of claims 1 to 15, and a power supply mechanism configured to supply power to the atomizer.
An electronic atomization device, comprising:
a liquid storage cavity, configured to store a liquid substrate;

an induction heating element, capable of being penetrated by a changing magnetic field to generate heat, to heat the liquid substrate to generate an aerosol; and

an induction coil, configured to generate the changing magnetic field, wherein an axial length of the induction coil is less than a length of the induction heating element.
The electronic atomization device according to claim 17, wherein the induction coil surrounds a part of the induction heating element.
The electronic atomization device according to claim 17, wherein the induction coil is located on an inner side of the induction heating element and generates the changing magnetic field in the induction heating element.
The electronic atomization device according to any one of claims 17 to 19, comprising:
an atomizer, configured to atomize the liquid substrate to generate the aerosol; and

a power supply mechanism, comprising:
a receiving cavity, having an opening, wherein during use, at least a part of the atomizer is removably received in the receiving cavity through the opening;

the liquid storage cavity and the induction heating element are arranged on the atomizer;

the induction coil is arranged on the power supply mechanism; and

when the atomizer is received in the receiving cavity, the induction heating element is capable of being penetrated by the changing magnetic field generated by the induction coil to generate heat.