EP4602954A1

EP4602954A1 - Atomizer and electronic atomization device

Info

Publication number: EP4602954A1
Application number: EP23890592.1A
Authority: EP
Inventors: Yuanhua FENG; Baofeng Xie; Yongqiang Liu; Zhongli XU; Yonghai LI
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2022-11-18
Filing date: 2023-10-31
Publication date: 2025-08-20
Also published as: WO2024104156A1; CN118056499A; EP4602954A4

Abstract

An atomizer (100) and an electronic atomization device. The atomizer (100) comprises a housing. The housing is internally provided with: a liquid storage cavity (12), configured to store a liquid matrix; a capillary element (30), configured to receive the liquid matrix from the liquid storage cavity (12), a heating element (40), heating the liquid matrix held within the capillary element (30) to generate an aerosol; and a dense isolation element (50), located between the liquid storage cavity (12) and the capillary element (30) to isolate the liquid storage cavity (12) from the capillary element (30), wherein the isolation element (50) comprises a first side adjacent to the liquid storage cavity (12) and a second side facing away from the first side; the isolation element (50) defines a liquid channel comprising an inlet on the first side and an outlet on the second side; and the capillary element (30) abuts against the second side of the isolation element (50) and covers the outlet to receive the liquid matrix delivered by the liquid channel. The capillary element (30) and the liquid storage cavity (12) are communicated with each other by means of the liquid channel defined by the dense isolation element (50).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202211443979.0, filed with China National Intellectual Property Administration on November 18, 2022 and entitled "ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE", 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), tobaccos are burnt to generate tobacco vapor. An attempt has been made to replace these tobacco-burning products by producing products that release compounds without burning.
An example of such products is a heating device, which releases compounds by heating tobacco rather than burning the material. For example, the material may be tobacco or other non-tobacco products, and these non-tobacco products may or may not contain nicotine. In another example, aerosol providing products exist, for example, the so-called electronic atomization devices. The devices usually contain a liquid. The liquid is heated and atomized, thereby generating an inhalable aerosol.

SUMMARY

An embodiment of this application provides an atomizer, including a shell. The shell has arranged therein:

a liquid storage cavity, configured to store a liquid substrate;
a capillary element, configured to receive the liquid substrate from the liquid storage cavity;
a heating element, coupled to the capillary element and configured to heat at least part of the liquid substrate held in the capillary element to generate an aerosol; and
a dense isolation element, located between the liquid storage cavity and the capillary element to isolate the liquid storage cavity from the capillary element, where the isolation element includes a first side adjacent to the liquid storage cavity and a second side opposite to the first side; the isolation element defines a liquid channel, and the liquid channel includes an inlet on the first side and an outlet on the second side; and
the capillary element abuts against the second side of the isolation element and covers the outlet to receive the liquid substrate delivered from the liquid channel.

In some implementations, the liquid substrate in the liquid storage cavity is configured to be delivered to the capillary element only through the liquid channel.
In some implementations, the isolation element is constructed in a shape of a sheet, a plate, or a block, and is arranged substantially perpendicular to a longitudinal direction of the shell.
In some implementations, the liquid storage cavity has an opening, and the shell has an inner wall surface that at least partially defines the liquid storage cavity; and
the isolation element covers the opening of the liquid storage cavity, and forms a seal with the inner wall surface through an interference fit.
In some implementations, no flexible seal element configured to provide a seal is arranged between the isolation element and the inner wall surface of the shell.
In some implementations, the inner wall surface is provided with a ridge extending along the longitudinal direction of the shell; and
the ridge is constructed to abut against the isolation element on the first side.
In some implementations, the liquid channel includes a liquid guide hole extending from the inlet to the outlet.
In some implementations, the capillary element has no portion extending into the liquid guide hole.
In some implementations, a cross-sectional area of the inlet is greater than a cross-sectional area of the outlet.
In some implementations, a cross-sectional area of at least part of the liquid guide hole is variable.
In some implementations, an inner surface of the liquid channel is further provided with a flow spoiling structure. The flow spoiling structure includes a protrusion or a recess provided on the inner surface of the liquid channel.
In some implementations, the isolation element includes:

a first isolation element and a second isolation element, arranged in sequence along a longitudinal direction of the shell;
the inlet is provided on the first isolation element, and the outlet is provided on the second isolation element; and the liquid channel is at least partially defined between the first isolation element and the second isolation element.

In some implementations, the inlet and the outlet are provided in a staggered manner along the longitudinal direction of the shell.
In some implementations, the second isolation element is at least partially accommodated in the first isolation element.
In some implementations, the shell has arranged therein an aerosol output tube extending along the longitudinal direction and configured to output an aerosol; and
the first isolation element and/or the second isolation element is provided with an insertion hole for the aerosol output tube to pass through, and the liquid channel bypasses the insertion hole.
In some implementations, the first isolation element includes a first surface facing the second isolation element;

the second isolation element includes a second surface facing the first surface; and
the first surface and/or the second surface is provided with a protruding edge, so that a gap that defines the liquid channel is held between the first surface and the second surface.

In some implementations, the protruding edge includes:
an annular portion and an extended portion formed by extending outward from the annular portion.
In some implementations, the shell has arranged therein an aerosol output tube extending along the longitudinal direction and configured to output an aerosol; and

the first isolation element and/or the second isolation element is provided with an insertion hole for the aerosol output tube to pass through; and
the annular portion is arranged around the insertion hole.

Another embodiment of this application further provides an atomizer, including a shell; the shell has arranged therein:

a liquid storage cavity, configured to store a liquid substrate;
a capillary element, configured to receive the liquid substrate from the liquid storage cavity;
a heating element, coupled to the capillary element and configured to heat at least part of the liquid substrate held in the capillary element to generate an aerosol;
a dense first isolation element and a dense second isolation element, arranged in sequence between the liquid storage cavity and the capillary element along a longitudinal direction of the shell, to isolate the liquid storage cavity from the capillary element; and
a liquid channel, at least partially defined between the first isolation element and the second isolation element, to deliver the liquid substrate in the liquid storage cavity to the capillary element.

Still another embodiment of this application further provides an electronic atomization device, including the foregoing atomizer and a power supply mechanism for supplying power to the atomizer.
In the foregoing atomizer, a dense isolation element defines some boundaries of the liquid storage cavity, and the capillary element is in communication with the liquid storage cavity through a liquid channel defined on the isolation element.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 1 is a schematic structural diagram of an electronic atomization device according to an embodiment;
FIG. 2 is a schematic structural diagram of an embodiment of an atomizer in FIG. 1;
FIG. 3 is a schematic exploded view of the atomizer in FIG. 2 from a perspective;
FIG. 4 is a schematic exploded view of the atomizer in FIG. 2 from another perspective;
FIG. 5 is a schematic cross-sectional view of the atomizer in FIG. 2 from a perspective;
FIG. 6 is a schematic cross-sectional view of an isolation element and an atomization assembly in FIG. 3 after assembly;
FIG. 7 is a schematic structural diagram of the isolation element in FIG. 6 from another perspective;
FIG. 8 is a schematic cross-sectional view of an isolation element and an atomization assembly after assembly according to another embodiment;
FIG. 9 is a schematic cross-sectional view of an isolation element and an atomization assembly after assembly according to another embodiment;
FIG. 10 is a schematic exploded view of each component of an atomizer according to still another embodiment from a perspective;
FIG. 11 is a schematic exploded view of each component of the atomizer in FIG. 10 from another perspective;
FIG. 12 is a schematic cross-sectional view of the atomizer in FIG. 10 after assembly from a perspective;
FIG. 13 is a schematic diagram of a first isolation element and a second isolation element in FIG. 12 before assembly from a perspective; and
FIG. 14 is a schematic diagram of the first isolation element and the second isolation element in FIG. 13 before assembly from another perspective.

DETAILED DESCRIPTION

To facilitate understanding of this application, this application is described in more detail below with reference to accompanying drawings and specific implementations.
An embodiment of this application provides an electronic atomization device. Referring to FIG. 1, the electronic atomization device includes an atomizer 100 for storing and atomizing a liquid substrate to generate an aerosol, and a power supply mechanism 200 for supplying power to the atomizer 100.
In an optional implementation, as shown in FIG. 1, the power supply mechanism 200 includes: a receiving cavity 270 arranged at an end along a length direction and configured to receive at least part of the atomizer 100; and an electrical contact 230 at least partially exposed from a surface of the receiving cavity 270 and configured to form an electrical connection with the atomizer 100 to supply power to the atomizer 100 when the at least part of the atomizer 100 is received and accommodated in the power supply mechanism 200.
According to the embodiment shown in FIG. 1, an electrical contact 21 is arranged on the atomizer 100, so that when at least part of the atomizer 100 is received in the receiving cavity 270, the atomizer 100 comes into contact with the electrical contact 230 through the electrical contact 21 to form an electrical connection with the power supply mechanism 200.
A seal member 260 is arranged in the power supply mechanism 200, and at least part of an internal space of the power supply mechanism 200 is separated by the seal member 260 to form the receiving cavity 270. In the embodiment shown in FIG. 1, the seal member 260 is constructed to extend along a cross-section direction of the power supply mechanism 200, and is preferably made of a flexible material such as silica gel, so as to prevent, from flowing to a component such as a controller 220 or a sensor 250 inside the power supply mechanism 200, the liquid substrate seeping from the atomizer 100 to the receiving cavity 270.
In the embodiment shown in FIG. 1, the power supply mechanism 200 further includes: a battery core 210 at an end facing away from the receiving cavity 270 along the length direction and configured to supply power; and the controller 220 arranged between the battery core 210 and the receiving cavity 270, where the controller 220 operably guides a current between the battery core 210 and the electrical contact 230.
The power supply mechanism 200 includes the sensor 250 configured to sense an inhalable airflow generated by the atomizer 100 during inhalation, so that the controller 220 controls the battery core 210 to output power to the atomizer 100 based on a sensing result of the sensor 250.
Further, in the embodiment shown in FIG. 1, the other end of the power supply mechanism 200 facing away from the receiving cavity 270 is provided with a charging interface 240 for charging the battery core 210.
FIG. 2 to FIG. 5 each show a schematic structural diagram of an embodiment of the atomizer 100 in FIG. 1, including:
a main housing 10, which is substantially flat and in the shape of a hollow cylinder, and is an internal necessary functional device for storing and atomizing a liquid substrate. The main housing 10 has a proximal end 110 and a distal end 120 opposite to each other along the length direction. Based on requirements of common use, the proximal end 110 is configured as an end for a user to inhale an aerosol, and the proximal end 110 is provided with an inhalation port 113 for inhalation by the user. The distal end 120 is used as an end coupled to the power supply mechanism 200, and the distal end 120 of the main housing 10 is an open, on which a detachable end cap 20 is mounted. The open structure is configured to allow mounting of various functional components inside the main housing 10.
Further, in specific implementations shown in FIG. 2 to FIG. 5, the electrical contact 21 runs through a surface of the end cap 20 into the atomizer 100, so that the electrical contact 21 is at least partially exposed from the atomizer 100, and then comes into contact with the electrical contact 230 to form an electrical connection. In addition, the end cap 20 is further provided with an air inlet 22 for allowing external air to enter the atomizer 100 during inhalation. As shown in FIG. 2 to FIG. 5, after assembly, the electrical contact 21 is flush with the surface of the end cap 20.
Further, according to the embodiment shown in FIG. 2, the main housing 10 includes:
a portion 111 and a portion 112, where the portion 111 is close to or defines the proximal end 110, and the portion 112 is close to or defines the distal end 120. A width of the portion 111 is greater than a width of the portion 112; and/or a thickness of the portion 111 is greater than a thickness of the portion 112. Further, a step is formed between the portion 111 and the portion 112. During use, the portion 112 of the main housing 10 can be received in the receiving cavity 270 of the power supply mechanism 200, and establish an electrical connection with the power supply mechanism 200. The portion 111 is exposed outside the receiving cavity 270. In addition, the step defined between the portion 111 and the portion 112 abuts against the power supply mechanism 200, so as to provide a stop for the atomizer 100 received in the receiving cavity 270.
Further, referring to FIG. 3 to FIG. 5, an interior of the main housing 10 is provided with a liquid storage cavity 12 for storing the liquid substrate, and an atomization assembly for absorbing the liquid substrate from the liquid storage cavity 12 and heating and atomizing the liquid substrate. In a schematic cross-sectional view shown in FIG. 5, the main housing 10 has arranged therein an aerosol output tube 11 arranged along an axial direction. The liquid storage cavity 12 for storing the liquid substrate is formed in a space between an outer wall of the aerosol output tube 11 and an inner wall of the main housing 10. A first end of the aerosol output tube 11 opposite to the proximal end 110 is in communication with the inhalation port 113, so that the generated aerosol is transmitted to the inhalation port 113 for inhalation.
Further, as shown in FIG. 5, the aerosol output tube 11 and the main housing 10 are integrally molded from a moldable material, so that a first side of the liquid storage cavity 12 formed after manufacturing close to or toward the proximal end 110 is closed, and a second side of the liquid storage cavity 12 toward the distal end 120 has an open space or an opening. Further, during use, the liquid substrate exits from the open space or the opening of the liquid storage cavity 12 toward the second side of the distal end 120.
In the embodiments shown in FIG. 3 to FIG. 5, the atomization assembly includes: a capillary element 30 for absorbing and transferring the liquid substrate through capillary action, and a heating element 40 for heating and atomizing the liquid substrate absorbed by the capillary element 30. Specifically, the capillary element 30 is made of a flexible strip-shaped or rod-shaped capillary fiber material, for example, cotton fiber, non-woven fabric fiber, or a sponge. During assembly, the capillary element 30 is constructed to be U-shaped, including a portion 31 extending along a width direction of the main housing 10, and a portion 32 extending from two end sides of the portion 31 toward the liquid storage cavity 12. During use, the portion 32 is configured to absorb the liquid substrate and then transfer the liquid substrate to the portion 31 through capillary infiltration. The heating element 40 is constructed to at least partially surround the portion 31, and configured to heat at least part of the liquid substrate of the foregoing portion 31 to generate an aerosol. As shown in FIG. 3 to FIG. 5, the heating element 40 has a configuration of a spiral heating wire, and may be made of a resistive metal such as an iron-chromium-aluminum alloy or a nickel-chromium alloy.
In addition, in an implementation, two ends of the heating element 40 are each provided with a conductive pin 41 for supplying power to the heating element 40.
In some implementations, an extension length d1 of the portion 31 of the capillary element 30 in FIG. 3 is approximately 9 mm, and an extension length d2 of the portion 32 is approximately 7.5 mm. An inner diameter of the heating element 40 is approximately in a range of 2.0 mm to 2.6 mm. The portion 31 of the capillary element 30 is arranged perpendicular to a longitudinal direction of the main housing 10, and the portion 32 of the capillary element 30 is substantially arranged to extend along the longitudinal direction of the main housing 10.
In the implementations shown in FIG. 3 to FIG. 5, the atomization assembly is arranged between the liquid storage cavity 12 and the distal end 120. The main housing 10 has further arranged therein:
an isolation element 50. In an implementation, the isolation element 50 is in a shape of a sheet or a block arranged perpendicular to the longitudinal direction of the main housing 10. In a suitable example, the isolation element 50 is dense, or the isolation element 50 is made of a non-porous material. For example, the isolation element 50 is a dense element made of an organic polymer, metal, or an alloy. The organic polymer is for example polycarbonate or polypropylene. The isolation element 50 is arranged to cover or close the open space or the opening of the liquid storage cavity 12 toward the distal end 120.
In the implementations shown in FIG. 3 to FIG. 5, the isolation element 50 is arranged between the atomization assembly and the liquid storage cavity 12, so as to isolate or separate the atomization assembly from the liquid storage cavity 12. In addition, in an implementation, the isolation element 50 is substantially elliptical in shape. The shape of the isolation element 50 matches the shape of the open space or the opening of the liquid storage cavity 12. In some implementations, the isolation element 50 has a length in a range of 12 mm to 20 mm, a width in a range of 5 mm to 10 mm, and a thickness in a range of 0.2 mm to 2 mm.
Further, in the implementations shown in FIG. 3 to FIG. 5, the main housing 10 has a support 70 arranged therein, so as to provide support and fixation for the isolation element 50 and the atomization assembly. The support 70 is substantially in a shape of a hollow cup or cylinder, and the atomization assembly is accommodated and held in the support 70. In addition, the support 70 abuts against a lower side surface of the isolation element 50 facing away from the liquid storage cavity 12, so as to at least partially provide support or retention for the isolation element 50.
Further, in implementations shown in FIG. 3 to FIG. 5, the isolation element 50 further has an insertion hole 51 arranged therein. During assembly, a second end of the aerosol output tube 11 facing away from the inhalation port 113 passes through or is inserted into the insertion hole 51, and then is fastened to the isolation element 50. In addition, in some implementations, the isolation element 50 is fastened to the aerosol output tube 11 by riveting at the second end of the aerosol output tube 11 facing away from the inhalation port 113. In addition, in an implementation, a peripheral side surface of the isolation element 50 is tightly fitted with an inner surface of the main housing 10 by riveting, so as to form a seal therebetween. An inner side surface of the insertion hole 51 defined by the isolation element 50 is tightly fitted with an outer surface of the aerosol output tube 11 by riveting, so as to form a seal therebetween.
Alternatively, in some other variant implementations, a seal element, for example, a flexible O-shaped seal ring, is arranged between the isolation element 50 and the aerosol output tube 11, to provide a seal therebetween. Alternatively, a seal element, for example, an annular seal ring, is arranged between the isolation element 50 and the inner surface of the main housing 10, to provide a seal therebetween.
As shown in FIG. 3 to FIG. 5, the support 70 has an end portion 710 and an end portion 720 that face away from each other along a longitudinal direction of the atomizer 100. The end portion 710 is oriented toward the proximal end 110, and the end portion 720 is oriented toward the distal end 120. The end portion 710 of the support 70 is open or has an opening. The end portion 720 of the support 70 is closed. After assembly, the atomization assembly is accommodated in the support 70 through the opening of the end portion 710 of the support 70.
As shown in FIG. 3 to FIG. 5, the isolation element 50 is located outside the support 70, and is not accommodated or held in the support 70. The isolation element 50 is arranged substantially perpendicular to the longitudinal direction of the main housing 10. After the assembly, the open space of the end portion 710 of the support 70 is covered by the isolation element 50. Further, the isolation element 50 and the support 70 jointly define an atomization chamber 73.
In the implementations shown in FIG. 3 to FIG. 5, a convex rib 731 and a convex rib 732 that surround the support 70 along a circumferential direction are arranged on an outer surface of the support 70. The convex rib 731 and the convex rib 732 are closed rings for sealing an assembly gap between the support 70 and the main housing 10. In addition, along a longitudinal direction of the support 70, the convex rib 731 is arranged close to the isolation element 50 and/or the end portion 710 of the support 70, and the convex rib 732 is arranged close to the end cap 20 and/or the end portion 720 of the support 70. After the assembly, the convex rib 732 is located between the end cap 20 and the main housing 10; and the convex rib 732 is at least partially squeezed or compressed by the end cap 20 and the main housing 10.
In the implementations shown in FIG. 3 to FIG. 5, the support 70 is further provided with a contact hole 71. The contact hole 71 is oriented toward the end cap 20. After the assembly, the conductive pin 41 of the heating element 40 extends through the end portion 720 of the support 70 from a lead hole 75 on the support 70, and is bent into the contact hole 71, and then the electrical contact 21 extends into the contact hole 71 and abuts against the conductive pin 41 to form an electrical connection.
Further, in the implementations shown in FIG. 3 to FIG. 5, the support 70 further defines an atomization chamber 73 surrounding the portion 31 and/or the heating element 40. The aerosol generated by the heating element 40 through heating is released into the atomization chamber 73 and then outputted through the aerosol output tube 11. In addition, the end portion 710 of the support 70 close to the liquid storage cavity 12 provides support for the isolation element 50. The isolation element 50 is provided with an insertion hole 51 for the aerosol output tube 11 to be inserted into or pass through. During the assembly, a second end of the aerosol output tube 11 facing away from the inhalation port 113 is inserted into or passes through the insertion hole 51 into the support 70, and then is brought into communication with the atomization chamber 73 to output an aerosol in the atomization chamber 73 to the inhalation port 113.
In the implementations shown in FIG. 3 to FIG. 5, the support 70 is further provided with an air inlet 72 in communication with an air inlet 22. During the inhalation, the external air enters the atomization chamber 73 through the air inlet 22 and the air inlet 72 in sequence, and carries the aerosol in the atomization chamber 73 and outputs the aerosol to the inhalation port 113 through the aerosol output tube 11, as shown by arrows R2 in FIG. 3 and FIG. 5.
Further, as shown in FIG. 3 to FIG. 7, the isolation element 50 includes a surface 510 and a surface 520 that face away from each other along a thickness direction; and the surface 510 is oriented toward and adjacent to the liquid storage cavity 12, the surface 520 abuts against and contacts the end portion 710 of the support 70, and the surface 510 and the surface 520 of the isolation element 50 are flat. Further, the isolation element 50 further includes: a liquid guide hole 52, extending from the surface 510 or running through the surface 520.
As shown in FIG. 5 to FIG. 7, a port of the liquid guide hole 52 formed on the surface 510 is used as a liquid inlet; and a port of the liquid guide hole 52 formed on the surface 520 is used as a liquid outlet. The portion 32 of the capillary element 30 abuts against the surface 520 of the isolation element 50, and covers or occludes the liquid outlet of the liquid guide hole 52 located on the surface 520. In addition, during use, the liquid substrate in the liquid storage cavity 12 can only flow to the liquid outlet through the liquid guide hole 52 of the isolation element 50 and is absorbed by the portion 32 of the capillary element 30, and then is transferred to the portion 31 of the capillary element 30 to be heated and atomized by the heating element 40, for example, as shown by arrows R1 in FIG. 5 to FIG. 7.
In an implementation, a liquid channel located between the liquid storage cavity 12 and the portion 32 of the capillary element 30 is defined by the liquid guide hole 52. The liquid substrate in the liquid storage cavity 12 can only be outputted to a portion of the capillary element 30 through the liquid channel defined by the liquid guide hole 52. The isolation element 50 is dense. In other words, the isolation element 50 is not provided with a capillary pore or a capillary channel other than the liquid channel.
In a specific implementation, a diameter of the liquid guide hole 52 is in a range of 0.1 mm to 1 mm, and an extension length of the liquid guide hole 52 is in a range of 0.3 mm to 1 mm. A cross-sectional area of the liquid inlet of the liquid guide hole 52 formed on the surface 510 is greater than a cross-sectional area of the liquid outlet formed on the surface 520.
As shown in FIG. 3 to FIG. 5, the liquid guide hole 52 includes a section 521 close to or defining the liquid inlet, and a section 522 close to or defining the liquid outlet. A cross-sectional area of the section 521 is greater than a cross-sectional area of the section 522. The cross-sectional area of the section 522 is substantially constant, and the cross-sectional area of the section 521 varies. Specifically, a cross-sectional area of at least part of the section 521 decreases along a direction facing away from the surface 510. The cross-sectional area of the section 521 gradually decreases, so that the section 521 is in a shape of a cone.
In a specific implementation, the cross-sectional area of the section 522 is 0.3 mm; and the cross-sectional area of the section 521 gradually increases from 0.5 mm to 1.0 mm.
FIG. 8 is a schematic diagram showing an isolation element 50a and an atomization assembly after assembly according to another variant embodiment. In the embodiment, the isolation element 50a includes a surface 510a and a surface 520a that face away from each other. Moreover, a liquid guide hole 52a runs through the surface 510a or extends to the surface 520a. After the assembly, a portion 32 of the capillary element 30 abuts against the surface 520a of the isolation element 50a, and covers or occludes a liquid outlet of the liquid guide hole 52a located on the surface 520a.
The liquid guide hole 52a is in a shape of a cone. A cross-sectional area of at least part of the liquid guide hole 52a decreases along a direction away from the surface 510a.
FIG. 9 is a schematic diagram showing an isolation element 50c and an atomization assembly after assembly according to another variant embodiment. A liquid guide hole 52c of the isolation element 50c includes a section 521c close to or defining a liquid inlet, and a section 522c close to or defining a liquid outlet. A cross-sectional area of the section 521c is greater than a cross-sectional area of the section 522c. The cross-sectional area of the section 521c and/or 522c is substantially constant. In addition, in the embodiment shown in FIG. 9, the cross-sectional area of the section 521c is 1.0 mm, and the cross-sectional area of the section 522c is 0.5 mm.
FIG. 10 to FIG. 14 are schematic diagrams of an atomizer 100 according to another embodiment. In the implementation, the atomizer 100 includes:
an isolation element 50b and an isolation element 60b that are arranged between an atomization assembly and a liquid storage cavity 12b along a longitudinal direction of the atomizer 100, so as to isolate the atomization assembly from the liquid storage cavity 12b.
In the implementations shown in FIG. 10 to FIG. 14, the isolation element 50b and/or the isolation element 60b is arranged perpendicular to the longitudinal direction of the atomizer 100.
The isolation element 50b and/or the isolation element 60b is dense. For example, the isolation element 50b and/or the isolation element 60b includes a dense organic polymer such as plastic or metal.
The isolation element 60b is closer to the liquid storage cavity 12b than the isolation element 50b.
The isolation element 50b is in a shape of a sheet or a plate, or the like, and a surface 510b and a surface 520b of the isolation element 50b are flat.
The isolation element 60b is in a shape of a cap. The isolation element 60b has a top wall 6110b and a peripheral side wall 6120b extending from the top wall 6110b. The peripheral side wall 6120b extends away from the liquid storage cavity 12b. The isolation element 60b has an upper side 610b facing the liquid storage cavity 12b, and a lower side 620b facing away from the upper side 610b. In addition, in an implementation, the top wall 6110b is close to or defines the upper side 610b, and the peripheral side wall 6120b is close to or defines the lower side 620b. The lower side 620b defined by the peripheral side wall 6120b is open, and the isolation element 50b can be accommodated by the lower side 620b or extend into an interior of the isolation element 60b. After assembly, the peripheral side wall 6120b of the isolation element 60b at least partially embraces or surrounds the isolation element 50b.
The isolation element 50b is provided with an insertion hole 51b, and the top wall 6110b of the isolation element 60b is provided with an insertion hole 61b. During the assembly, the aerosol output tube 11b extends through the insertion hole 61b and the insertion hole 51b in sequence by riveting, and then extends into the atomization chamber defined in the support 70b.
The isolation element 60b and the isolation element 50b jointly define a channel for transferring a liquid substrate between the liquid storage cavity 12b and the atomization assembly. Specifically, as shown in FIG. 13 and FIG. 14, the top wall 6110b of the isolation element 60b is provided with a second liquid guide hole 62b, and a surface of the top wall 6110b facing the lower side 620b is provided with a protruding edge 63b. A first liquid guide hole 52b that runs through the surface 510b or extends to the surface 520b is arranged on the isolation element 50b. After the assembly, the surface 510b of the isolation element 50b abuts against the protruding edge 63b of the top wall 6110b of the isolation element 60b, and a liquid channel located between the second liquid guide hole 62b and the first liquid guide hole 52b is defined between the surface 510b of the isolation element 50b and the top wall 6110b of the isolation element 60b. During use, the liquid substrate enters through the second liquid guide hole 62b, flows to the first liquid guide hole 52b through the liquid channel, and then is outputted to a portion 32b of a capillary element 30b to be absorbed, as shown by arrows R1 in FIG. 12 to FIG. 14.
Further, as shown in FIG. 13 and FIG. 14, the protruding edge 63b includes:

a portion 631b, which is annular around the insertion hole 61b; and
a portion 632b, formed by extending the portion 631b, where the portion 632b extends along a length direction of the top wall 6110b; and the portion 632b is curved in an arc shape.

A protrusion height of the protruding edge 63b is in a range of 0.6 mm to 1.5 mm.
Further, in an implementation, a liquid channel located between the second liquid guide hole 62b and the first liquid guide hole 52b is defined between the portion 631b and the portion 632b of the protruding edge 63b and the peripheral side wall 6220b.
Along a width direction of the atomizer 100, the second liquid guide hole 62b and the first liquid guide hole 52b are respectively located on two sides of the annular portion 631b of the protruding edge 63b; or the liquid channel bypasses or crosses the annular portion 631b of the protruding edge 63b along the width direction of the atomizer 100.
Moreover, a plurality of flow spoiling structures 64b are arranged between the protruding edge 63b and the peripheral side wall 6220b. For example, the flow spoiling structure 64b is a protrusion or an obstacle structure located between the protruding edge 63b and the peripheral side wall 6220b. Specifically, a portion of the flow spoiling structure 64b abuts against or is coupled to the peripheral side wall 6220b, and a portion of the flow spoiling structure 64b abuts against or is coupled to the protruding edge 63b; and the flow spoiling structure 64b is arranged in a staggered manner between the protruding edge 63b and the peripheral side wall 6220b, so that when the liquid substrate flows in the liquid channel, a flow path of the liquid substrate is circuitous or tortuous through the flow spoiling structure 64b, for example, as shown by R1 in FIG. 14.
The portion 32b of the capillary element 30b abuts against the surface 520b of the isolation element 50b, and covers or occludes a port of the first liquid guide hole 52b located on the surface 520b, thereby receiving or absorbing the liquid substrate.
Alternatively, in some other variant implementations, the flow spoiling structure 64b may further be a recess or a protrusion arranged on an inner surface of the liquid channel. A depth of the recess or a height of the protrusion may be approximately in a range of 0.3 mm to 2.0 mm.
In the foregoing implementations, the arrangement of the flow spoiling structure 64b is advantageous to improve flow resistance during transfer of the liquid substrate, so that efficiency of transferring the liquid substrate to the portion 32b of the capillary element 30b through the liquid channel is uniform or stable.
In some implementations, the inner surfaces of the peripheral side walls of the isolation element 50b and the isolation element 60b are riveted, and then are sealed through interference. Alternatively, in some other implementations, the inner surfaces of the peripheral side walls of the isolation element 50b and the isolation element 60b are sealed through a flexible seal element.
Alternatively, in some other variant implementations, a surface of the top wall 6110b of the isolation element 60b that faces the lower side 620b is flat, and the foregoing protruding edge 63b and/or the flow spoiling structure 64b is arranged on the surface 510b of the isolation element 50b.
It should be noted that preferred embodiments of this application are provided in the specification and the accompanying drawings of this application, but are not limited to the embodiments described in the specification. Further, a person of ordinary skill in the art may make improvements or modifications according to the above descriptions, and all of the improvements and modifications shall fall within the protection scope of the appended claims of this application.

Claims

An atomizer, comprising a shell, characterized in that the shell has arranged therein:
a liquid storage cavity, configured to store a liquid substrate;

a capillary element, configured to receive the liquid substrate from the liquid storage cavity;

a heating element, coupled to the capillary element and configured to heat at least part of the liquid substrate held in the capillary element to generate an aerosol; and

a dense isolation element, located between the liquid storage cavity and the capillary element to isolate the liquid storage cavity from the capillary element, wherein the isolation element comprises a first side adjacent to the liquid storage cavity and a second side opposite to the first side; the isolation element defines a liquid channel, and the liquid channel comprises an inlet on the first side and an outlet on the second side, wherein

the capillary element abuts against the second side of the isolation element and covers the outlet to receive the liquid substrate delivered from the liquid channel.
The atomizer according to claim 1, wherein the liquid substrate in the liquid storage cavity is configured to be delivered to the capillary element only through the liquid channel.
The atomizer according to claim 1 or 2, wherein the isolation element is constructed in a shape of a sheet, a plate, or a block, and is arranged substantially perpendicular to a longitudinal direction of the shell.
The atomizer according to claim 1 or 2, wherein the liquid storage cavity has an opening, and the shell has an inner wall surface that at least partially defines the liquid storage cavity; and
the isolation element covers the opening of the liquid storage cavity, and forms a seal with the inner wall surface through an interference fit.
The atomizer according to claim 4, wherein the inner wall surface is provided with a ridge extending along a longitudinal direction of the shell; and
the ridge is configured to abut against the isolation element on the first side.
The atomizer according to claim 1 or 2, wherein the liquid channel comprises a liquid guide hole extending from the inlet to the outlet.
The atomizer according to claim 6, wherein a cross-sectional area of the inlet is greater than a cross-sectional area of the outlet.
The atomizer according to claim 6, wherein a cross-sectional area of at least part of the liquid guide hole is variable.
The atomizer according to claim 1 or 2, wherein an inner surface of the liquid channel is further provided with a flow spoiling structure, and the flow spoiling structure comprises a protrusion or a recess provided on the inner surface of the liquid channel.
The atomizer according to claim 1 or 2, wherein the isolation element comprises:
a first isolation element and a second isolation element, arranged in sequence along a longitudinal direction of the shell;

the inlet is provided on the first isolation element, and the outlet is provided on the second isolation element; and the liquid channel is at least partially defined between the first isolation element and the second isolation element.
The atomizer according to claim 10, wherein the inlet and the outlet are provided in a staggered manner along the longitudinal direction of the shell.
The atomizer according to claim 10, wherein the second isolation element is at least partially accommodated in the first isolation element.
The atomizer according to claim 10, wherein the shell has arranged therein an aerosol output tube extending along the longitudinal direction and configured to output an aerosol; and
the first isolation element and/or the second isolation element is provided with an insertion hole for the aerosol output tube to pass through, and the liquid channel bypasses the insertion hole.
The atomizer according to claim 10, wherein the first isolation element comprises a first surface facing the second isolation element;
the second isolation element comprises a second surface facing the first surface; and

the first surface and/or the second surface is provided with a protruding edge, so that a gap that defines the liquid channel is held between the first surface and the second surface.
The atomizer according to claim 14, wherein the protruding edge comprises:
an annular portion and an extended portion formed by extending outward from the annular portion.
The atomizer according to claim 15, wherein the shell has arranged therein an aerosol output tube extending along the longitudinal direction and configured to output an aerosol; and
the first isolation element and/or the second isolation element is provided with an insertion hole for the aerosol output tube to pass through; and

the annular portion is arranged around the insertion hole.
An atomizer, comprising a shell, characterized in that the shell has arranged therein:
a liquid storage cavity, configured to store a liquid substrate;

a capillary element, configured to receive the liquid substrate from the liquid storage cavity;

a heating element, coupled to the capillary element and configured to heat at least part of the liquid substrate held in the capillary element to generate an aerosol;

a dense first isolation element and a dense second isolation element, arranged in sequence between the liquid storage cavity and the capillary element along a longitudinal direction of the shell, to isolate the liquid storage cavity from the capillary element; and

a liquid channel, at least partially defined between the first isolation element and the second isolation element, to deliver the liquid substrate in the liquid storage cavity to the capillary element.
An electronic atomization device, comprising the atomizer according to any of claims 1 to 17, and a power supply mechanism for supplying power to the atomizer.