EP4691281A1

EP4691281A1 - Atomizer and electronic atomization device

Info

Publication number: EP4691281A1
Application number: EP25194411.2A
Authority: EP
Inventors: Kelei Sun; Yan Lin; Haoliang Zhu; Yu Zhou
Original assignee: Smoore International Holdings Ltd
Current assignee: Smoore International Holdings Ltd
Priority date: 2024-08-06
Filing date: 2025-08-06
Publication date: 2026-02-11
Also published as: CN121465307A

Abstract

The present application relates to an atomizer and an electronic atomization device. The atomizer includes: a liquid storage cavity; an atomization core; a fixed pipe at least partially arranged in the liquid storage cavity and provided with a liquid inlet hole; and a first liquid guiding element and a second liquid guiding element that are sequentially arranged in the fixed pipe in an axial direction. The first liquid guiding element is in liquid guiding communication with the liquid storage cavity through the liquid inlet hole, and the second liquid guiding element surrounds at least the portion of the atomization core. The density of the first liquid guiding element is less than the density of the second liquid guiding element. The first liquid guiding element has the small density, thereby increasing the liquid storage volume of the first liquid guiding element. The second liquid guiding element has the larger density, thereby accelerating absorption of liquid from the first liquid guiding element and quickly transferring the liquid to the atomization core for atomization. The liquid guiding speed at the contact surface between the first liquid guiding element and the second liquid guiding element may decrease, thereby decreasing the overall liquid guiding speed and avoiding leakage during inhalation due to excessively quick liquid transfer.

Description

TECHNICAL FIELD

The present application relates to the technical field of atomization, and in particular to, an atomizer and an electronic atomization device.

BACKGROUND

An electronic atomization device is configured to heat and atomize an aerosol generating substrate, to generate an aerosol suitable for inhalation. In existing high-capacity electronic atomization devices, a liquid guiding element is typically used to wrap around an atomization core for liquid guiding and liquid storage. The liquid guiding element has a single structure, which relies solely on its capillarity action to continuously absorb liquid until saturation is reached. Before the liquid guiding element is moisturized, the atomization core remains in the unsaturated state, which results in poor taste and dry hits. After the liquid guiding element is completely moisturized, condensed aerosol cannot be absorbed and may flow into a central hole, causing leakage during inhalation.

SUMMARY

A technical problem to be solved by the present application is to provide an improved atomizer and an electronic atomization device for the above shortcomings in the existing art, to supply liquid stably and reduce leakage during inhalation.
Technical solutions adopted in the present application to solve the technical problem are as follows: an atomizer is provided, including:

a liquid storage cavity;
an atomization core;
a fixed pipe at least partially arranged in the liquid storage cavity and provided with at least one liquid inlet hole; and
a first liquid guiding element and a second liquid guiding element that are sequentially arranged in the fixed pipe in an axial direction.

The first liquid guiding element is in liquid guiding communication with the liquid storage cavity through the at least one liquid inlet hole, and the second liquid guiding element surrounds at least the portion of the atomization core.
The density of the first liquid guiding element is less than the density of the second liquid guiding element.
In some embodiments, the first liquid guiding element and the second liquid guiding element are both liquid guiding cotton; the density of the first liquid guiding element is 0.06 g/cm³ to 0.1 g/cm³; and the density of the second liquid guiding element is 0.1 g/cm³ to 0.15 g/cm³.
In some embodiments, the thickness of the first liquid guiding element is greater than the thickness of the second liquid guiding element.
In some embodiments, the outer diameter of the first liquid guiding element is equivalent to the inner diameter of the fixed pipe. The outer diameter of the second liquid guiding element is less than the inner diameter of the fixed pipe.
The inner diameter of the first liquid guiding element is greater than the inner diameter of the second liquid guiding element.
In some embodiments, the atomizer further includes a third liquid guiding element. The first liquid guiding element, the second liquid guiding element, and the third liquid guiding element are sequentially arranged in the fixed pipe from bottom to top in the axial direction.
The density of the third liquid guiding element is greater than the density of the first liquid guiding element.
In some embodiments, the third liquid guiding element is in end-surface contact with the second liquid guiding element. The liquid absorption speed of the first liquid guiding element and the liquid absorption speed of the second liquid guiding element are both greater than the liquid absorption speed of the third liquid guiding element.
In some embodiments, the third liquid guiding element is liquid guiding cotton, and the density of the third liquid guiding element is 0.1 g/cm³ to 0.15 g/cm³.
In some embodiments, the atomizer further includes a support pipe arranged in the fixed pipe. The first liquid guiding element and the second liquid guiding element sleeve the support pipe. The atomization core is arranged in the support pipe. At least one opening for implementing liquid guiding communication between the atomization core and the second liquid guiding element is formed in the support pipe.
In some embodiments, the atomizer further includes a seal member. The seal member includes a main body portion that is in seal fit with the inner wall surface of the fixed pipe, and an extension portion embedded into the support pipe.
The second liquid guiding element and the support pipe press against the lower end surface of the main body portion.
At least one vent groove communicated with the at least one opening is formed in the support pipe.
The at least one vent groove is at least partially located between the extension portion and the second liquid guiding element.
After the at least one vent groove is wrapped and moisturized by the second liquid guiding element, a liquid film seals the at least one vent groove to form a vent structure.
The present application further provides an electronic atomization device, including:

a shell, where a first cavity and a second cavity that are spaced apart from each other are formed inside the shell, and a liquid storage cavity is formed inside the first cavity;
a battery arranged in the second cavity;
an atomization core arranged in the first cavity;
a fixed pipe at least partially arranged in the liquid storage cavity and provided with at least one liquid inlet hole; and
a first liquid guiding element and a second liquid guiding element that are sequentially arranged in the fixed pipe in an axial direction.

The first liquid guiding element is in liquid guiding communication with the liquid storage cavity through the at least one liquid inlet hole, and the second liquid guiding element surrounds at least the portion of the atomization core.
The density of the first liquid guiding element is less than the density of the second liquid guiding element.
In some embodiments, the first liquid guiding element and the second liquid guiding element are both liquid guiding cotton; the density of the first liquid guiding element is 0.06 g/cm³ to 0.1 g/cm³; and the density of the second liquid guiding element is 0.1 g/cm³ to 0.15 g/cm³.
In some embodiments, the thickness of the first liquid guiding element is greater than the thickness of the second liquid guiding element.
In some embodiments, the outer diameter of the first liquid guiding element is equivalent to the inner diameter of the fixed pipe. The outer diameter of the second liquid guiding element is less than the inner diameter of the fixed pipe.
The inner diameter of the first liquid guiding element is greater than the inner diameter of the second liquid guiding element.
In some embodiments, the electronic atomization device further includes a third liquid guiding element. The first liquid guiding element, the second liquid guiding element, and the third liquid guiding element are sequentially arranged in the fixed pipe from bottom to top in the axial direction.
The density of the third liquid guiding element is greater than the density of the first liquid guiding element.
In some embodiments, the third liquid guiding element is in end-surface contact with the second liquid guiding element. The liquid absorption speed of the first liquid guiding element and the liquid absorption speed of the second liquid guiding element are both greater than the liquid absorption speed of the third liquid guiding element.
In some embodiments, the third liquid guiding element is liquid guiding cotton, and the density of the third liquid guiding element is 0.1 g/cm³ to 0.15 g/cm³.
In some embodiments, the electronic atomization device further includes a support pipe arranged in the fixed pipe. The first liquid guiding element and the second liquid guiding element sleeve the support pipe. The atomization core is arranged in the support pipe. At least one opening for implementing liquid guiding communication between the atomization core and the second liquid guiding element is formed in the support pipe.
In some embodiments, the electronic atomization device further includes a seal member. The seal member includes a main body portion that is in seal fit with the inner wall surface of the fixed pipe, and an extension portion embedded into the support pipe.
The second liquid guiding element and the support pipe press against the lower end surface of the main body portion.
At least one vent groove communicated with the at least one opening is formed in the support pipe.
The at least one vent groove is at least partially located between the extension portion and the second liquid guiding element.
After the at least one vent groove is wrapped and moisturized by the second liquid guiding element, a liquid film seals the at least one vent groove to form a vent structure.
Implementation of the present application at least achieves the following beneficial effects: In the present application, the liquid guiding elements having different densities are used to guide liquid to the atomization core. The first liquid guiding element has the small density, so as to increase the liquid storage volume of the first liquid guiding element. The second liquid guiding element has the large density, so as to accelerate absorption of liquid from the first liquid guiding element and quickly transfer the liquid to the atomization core for atomization. The liquid guiding speed at the contact surface between the first liquid guiding element and the second liquid guiding element may decrease, thereby decreasing the overall liquid guiding speed and avoiding leakage during inhalation due to excessively quick liquid transfer.

BRIEF DESCRIPTION OF THE DRAWINGS

The present application is further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

FIG. 1 is a schematic diagram of a three-dimensional structure of an electronic atomization device according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of a longitudinal cross-sectional structure of the electronic atomization device shown in FIG. 1;
FIG. 3 is a schematic diagram of an internal partial structure (a liquid guiding and atomization structure) of the electronic atomization device shown in FIG. 2;
FIG. 4 is a schematic diagram of an exploded structure of the liquid guiding and atomization structure shown in FIG. 3;
FIG. 5 is a schematic diagram of a longitudinal cross-sectional structure of an electronic atomization device in a second embodiment of the present application;
FIG. 6 is a schematic diagram of a liquid guiding and atomization structure of the electronic atomization device shown in FIG. 5; and
FIG. 7 is a schematic diagram of an exploded structure of the liquid guiding and atomization structure shown in FIG. 6.

DETAILED DESCRIPTION

To provide a clearer understanding of the technical features, objectives, and effects of the present application, specific implementations of the present application are described in detail with reference to the accompanying drawings. In the following description, many specific details are described for thorough understanding of the present application. However, the present application may be implemented in many other modes different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "top", "bottom", "inner", "outer", and the like are orientations or positional relationships as shown in the drawings or orientations or positional relationships where the product of the present application is often located during use, and are only for the purpose of facilitating and simplifying the description of the present application instead of indicating or implying that devices or elements indicated need to have particular orientations, and be constructed and operated in the particular orientations, so that these terms are not construed as limiting the present application.
In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. From this, features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of the present application, unless explicitly specified, "plurality" means at least two, for example, two or three.
In the present application, unless otherwise expressly specified and limited, the terms "mount", "link", "connect", "fix", and the like should be understood in a broad sense, such as, a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, an internal communication of two elements, or interaction between two elements, unless expressly specified otherwise. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present application according to specific situations.
In the present application, unless otherwise explicitly stipulated and restricted, that a first feature is "on" or "under" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are in indirect contact through an intermediate. In addition, the first feature being "above" the second feature may be that the first feature is directly above the second feature or obliquely above the second feature, or may merely indicate that a horizontal position of the first feature is higher than that of the second feature. The first feature being "below" the second feature may be that the first feature is directly below the second feature or obliquely below the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature.
FIG. 1 and FIG. 2 show an electronic atomization device 1 in a first embodiment of the present application. The electronic atomization device 1 includes an atomizer 100, a battery 200, and a control circuit. The atomizer 100 includes a liquid storage cavity 110 for storing an aerosol generating substrate, and an atomization core 16 that is in liquid guiding communication with the liquid storage cavity 110. The control circuit is electrically connected to the battery 200 and the atomization core 16 respectively, and is configured to control the battery 200 to supply power to the atomization core 16. After being powered on, the atomization core 16 heats and atomizes the aerosol generating substrate to generate an aerosol. The aerosol generating substrate is typically liquid, and may include, but is not limited to, a material for medial, wellness, healthcare, or cosmetic application.
In some embodiments, the electronic atomization device 1 may be disposable. That is, components such as the atomizer 100, the battery 200, and a circuit board are integrated into one shell 300; charging and atomizer replacement are not required; and the entire electronic atomization device is discarded after use.
A first cavity 301 and a second cavity 302 are at least formed inside the shell 300. The first cavity 301 and the second cavity 302 are spaced apart from each other. A liquid storage cavity 110 is formed in the first cavity 301. The second cavity 302 is configured to accommodate electronic components such as the battery 200 and the circuit board. As shown in FIG. 2, a first cavity 301 and a second cavity 302 may be arranged side by side in a transverse direction. Certainly, in another embodiment, the first cavity 301 and the second cavity 302 may alternatively be arranged side by side in a longitudinal direction.
In some other embodiments, the electronic atomization device 1 may alternatively be rechargeable and reusable. Usually, the atomizer 100 is detachably connected to a power supply module (including the battery 200, the circuit board, a charging module, and the like), and the atomizer 100 may be replaced or re-injected with an aerosol generating substrate for repeated use.
As shown in FIG. 2 to FIG. 4, the atomizer 100 further includes a housing 11, a base 12, a fixed pipe 13, and at least two sections of liquid guiding elements 15. The housing 11 is cylindrical, which has an opening in one end (the lower end shown in the figure). The liquid storage cavity 110 is formed in the housing 11, and an inhalation channel 112 is formed in another end (the upper end shown in the figure) of the housing 11. The base 12 is arranged at the lower end (i.e., the end far away from the inhalation channel 112) of the housing 11, to close the opening in the lower end of the housing 11.
The fixed pipe 13 may be arranged in the housing 11 in the axial direction. The shape of the fixed pipe 13 is not limited. For example, the fixed pipe 13 may be circular, elliptical, polygonal, or the like. The liquid storage cavity 110 is formed between the fixed pipe 13 and the housing 11. Specifically, the liquid storage cavity 110 may be enclosed by the outer wall surface of the fixed pipe 13, the inner wall surface of the housing 11, and the upper end surface of the base 12.
At least one liquid inlet hole 130 through which the aerosol generating substrate passes is formed in the side wall of the fixed pipe 13. The shape and quantity of the liquid inlet hole 130 is not limited. The liquid inlet hole 130 may be in a regular shape such as a circle, an ellipse, or a polygon, or may be in an irregular shape. One or more air inlet holes 130 may be provided. Preferably, a plurality of liquid inlet holes 130 may be provided, which may be uniformly spaced apart in a circumferential direction and/or the axial direction of the fixed pipe 13, to implement uniform liquid supply.
The fixed pipe 13 may be made of a metal material such as stainless steel. The metal material has the advantages of high intensity, high-temperature resistance, zero pollution, zero odor, low cost, and the like. Certainly, in other embodiments, the fixed pipe 13 may alternatively be made of another material such as glass fibers or plastic.
The atomization core 16 is arranged in the fixed pipe 13 and may be, but not limited to, coaxial with the fixed pipe 13. For example, in some other embodiments, the central axis of the atomization core 16 may be parallel to, but does not overlap, the central axis of the fixed pipe 13, including: The atomization core 16 is slightly eccentric to the fixed pipe 13. That is, the central axis of the atomization core 16 slightly deviates from the central axis of the fixed pipe 13. Alternatively, the atomization core 16 and the fixed pipe 13 partially have contact overlapping regions. That is, the outer wall surface of the atomization core 16 is partially in contact with and partially spaced apart from the inner wall surface of the fixed pipe 13. Certainly, in some other embodiments, the central axis of the atomization core 16 and the central axis of the fixed pipe 13 may form an angle.
The atomization core 16 may include a liquid absorption element 161 and a heating element 162 that is in contact with the liquid absorption element 161. The liquid absorption element 161 is configured to absorb the aerosol generating substrate from the liquid storage cavity 110 and transfer the aerosol generating substrate to the heating element 162. The heating element 162 is configured to heat and atomize the aerosol generating substrate after being powered on. Further, the atomization core 16 may further include two electrode leads 163 connected to the heating element 162, and the heating element 162 is connected to the control circuit through the two electrode leads 163.
The liquid absorption element 161 may use any structure that can transfer or transport the aerosol generating substrate to the heating element 162. Generally, the liquid absorption element 161 may perform heat conduction through a capillarity force or another force. A material of the liquid absorption element 161 includes, but is not limited to, ceramic, glass, quartz, or a fiber.
In some embodiments, the liquid absorption element 161 may be made of a fiber material (for example, natural cotton and/or artificial cotton) that absorbs liquid quickly and is resistant to high temperature. Certainly, in other embodiments, the liquid absorption element 161 may alternatively be made of another cellular material, for example, cellular ceramic.
The liquid absorption element 161 may be cylindrical, and an atomization cavity 1610 is formed inside the liquid absorption element 161 in the axial direction in a penetrating manner. The atomization cavity 1610 is communicated with the inhalation channel 112, and may be coaxial with the inhalation channel 112. The heating element 162 may be arranged on the inner wall surface of the liquid absorption element 161. Certainly, in other embodiments, the heating element 162 may alternatively be arranged on the outer wall surface of the liquid absorption element 161.
The liquid guiding elements 15 may use any structure that can transfer or transport the aerosol generating material to the liquid absorption element 161. Usually, the liquid guiding elements 15 may perform liquid guiding through a capillarity force or another force. Materials of the liquid guiding elements 15 include, but are not limited to, ceramic, glass, quartz, or a fiber. In this embodiment, the liquid guiding elements 15 are liquid guiding cotton (including natural cotton and/or artificial cotton).
The at least two sections of liquid guiding elements 15 are sequentially arranged in the fixed pipe 13 in the axial direction. Specifically, the at least two sections of liquid guiding elements 15 include a first liquid guiding element 151 and a second liquid guiding element 152. The first liquid guiding element 151 is in liquid guiding communication with the liquid storage cavity 110 through the liquid inlet hole 130, and the second liquid guiding element 152 is arranged at the upper end of the first liquid guiding element 151 in the axial direction and abuts against the first liquid guiding element 151 to implement liquid guiding communication. The atomization core 16 is at least partially arranged in the second liquid guiding element 152 and is in liquid guiding communication with the second liquid guiding element 152. In this embodiment, the lower part of the atomization core 16 is wrapped by the first liquid guiding element 151, and the upper part of the atomization core 16 is wrapped by the second liquid guiding element 152. Certainly, in other embodiments, the atomization core 16 may alternatively be completely wrapped by the second liquid guiding element 152. Alternatively, the lower part of the atomization core 16 is wrapped by the second liquid guiding element 152, and the upper part of the atomization core 16 extends out of the second liquid guiding element 152.
The density of the first liquid guiding element 151 is less than the density of the second liquid guiding element 152. The first liquid guiding element 151 has the small density, so as to increase the liquid storage volume of the first liquid guiding element. The second liquid guiding element 152 has the large density, so as to accelerate absorption of liquid from the first liquid guiding element 151.
In some embodiments, the density of the first liquid guiding element 151 may be 0.06 g/cm³ to 0.1 g/cm³. The first liquid guiding element 151 may be made of a material having the high liquid absorption speed, such as polyamide + polyethylene terephthalate (PA + PET). In this way, it can be ensured that the first liquid guiding element 151 has the high liquid absorption speed and can quickly reach the saturated state. The outer diameter of the first liquid guiding element 151 may be equivalent to the inner diameter of the fixed pipe 13. In this way, the first liquid guiding element 151 can be made to have the thickness as large as possible and then have the high liquid storage volume.
The density of the second liquid guiding element 152 may be 0.1 g/cm³ to 0.15 g/cm³. The lower end surface of the second liquid guiding element 152 abuts against the upper end surface of the first liquid guiding element 151. By the end-surface contact, the aerosol generating substrate is absorbed from the first liquid guiding element 151. The second liquid guiding element 152 may be made of a material having the high liquid absorption speed, such as PA + PET, which can quickly absorb the aerosol generating substrate from the first liquid guiding element 151 and quickly transfer the aerosol generating substrate to the atomization core 16 through the inner surface of the second liquid guiding element 152 for atomization.
Both the first liquid guiding element 151 and the second liquid guiding element 152 are made of the materials that absorb liquid quickly, so as to ensure that the aerosol generating substrate can quickly moisturize the liquid absorption element 161 through the first liquid guiding element 151 and the second liquid guiding element 152, thereby achieving immediate inhalation without waiting.
In addition, the thickness of the second liquid guiding element 152 may be reduced by reducing the outer diameter of the second liquid guiding element 152, to reduce the liquid storage volume of the second liquid guiding element 152, thereby preventing excessive liquid supply. Specifically, the thickness of the second liquid guiding element 152 is less than the thickness of the first liquid guiding element 151. The outer diameter of the second liquid guiding element 152 is less than the inner diameter of the fixed pipe 13. That is, the outer diameter of the second liquid guiding element 152 is less than the outer diameter of the first liquid guiding element 151.
The inner diameter of the second liquid guiding element 152 may be less than or equal to the outer diameter of the atomization core 16, so that the inner wall surface of the second liquid guiding element 152 can be in contact with the outer wall surface of the atomization core 16 to implement liquid guiding. Preferably, to ensure reliable contact and liquid guiding between the second liquid guiding element 152 and the atomization core 16 and reduce the impact caused by a manufacturing error and an assembling error, the inner diameter of the second liquid guiding element 152 is less than the outer diameter of the atomization core 16, that is, the second liquid guiding element 152 and the atomization core 16 are in press fit (interference fit).
The inner diameter of the second liquid guiding element 152 may be equal to or not equal to the inner diameter of the first liquid guiding element 151. In this embodiment, the inner diameter of the second liquid guiding element 152 is less than the inner diameter of the first liquid guiding element 151.
Further, the at least two sections of liquid guiding elements 15 further include a third liquid guiding element 153. The third liquid guiding element 153 is arranged at the upper end of the second liquid guiding element 152 in the axial direction and may abut against the upper end of the second liquid guiding element 152. The third liquid guiding element 153 is tubular, the inner wall surface of which defines an air outlet channel 1530. The two ends of the air outlet channel 1530 are respectively communicated with the atomization cavity 1610 and the inhalation channel 112.
The outer diameter of the third liquid guiding element 153 may be equivalent to the inner diameter of the fixed pipe 13. The inner diameter of the third liquid guiding element 153 may be less than the inner diameter of the second liquid guiding element 152. The air outlet channel 1530 is narrowed by reducing the inner diameter of the third liquid guiding element 153, so that a concentrated and full aerosol is generated. Certainly, in other embodiments, the inner diameter of the third liquid guiding element 153 may alternatively be equal to or greater than the inner diameter of the second liquid guiding element 152. In some other embodiments, the third liquid guiding element 153 may further have the variable inner diameter. For example, the inner diameter of the third liquid guiding element 153 may gradually increase from bottom to top.
The third liquid guiding element 153 has the large density (greater than the density of the first liquid guiding element 151), so as to improve the liquid locking capability. In some embodiments, the density of the third liquid guiding element 153 may be equivalent to the density of the second liquid guiding element 152, and the density of the third liquid guiding element 153 may be 0.1 g/cm³ to 0.15 g/cm³. Certainly, in other embodiments, the density of the third liquid guiding element 153 may alternatively be less than or greater than the density of the second liquid guiding element 152.
The liquid absorption speed of the third liquid guiding element 153 is less than the liquid absorption speed of the second liquid guiding element 152. For example, the third liquid guiding element 153 may be made of a material with the low liquid absorption speed, such as PET or polypropylene (PP). In this way, it can be ensured that in the early stage of consumption of the aerosol generating substrate in the liquid storage cavity 110, the third liquid guiding element 153 does not excessively absorb the aerosol generating substrate from the second liquid guiding element 152, thereby ensuring normal atomization. In final stage of the consumption of the aerosol generating substrate in the liquid storage cavity 110, the aerosol generating substrate absorbed by the third liquid guiding element 153 may be supplemented to the second liquid guiding element 152. Meanwhile, since the moisturized third liquid guiding element 153 absorbs little condensate that is formed in an inhalation process, the condensate may fall under the action of its gravity, or may appropriately supplement the aerosol generating substrate required in the atomization process, thereby reducing or avoiding the problems of flavor distortion or dry hits.
Embodiment 1: The first liquid guiding element 151 is made of PA + PET and has the density of 0.08 g/cm³. The second liquid guiding element 152 is made of PA + PET and has the density of 0.13 g/cm³. The third liquid guiding element 153 is made of PET and has the density of 0.13 g/cm³.
Embodiment 2: The first liquid guiding element 151 is made of PA + PET and has the density of 0.06 g/cm³. The second liquid guiding element 152 is made of PA + PET and has the density of 0.11 g/cm³. The third liquid guiding element 153 is made of PET and has the density of 0.11 g/cm³.
In the above embodiments, a multi-stage liquid guiding system is formed by connecting the three sections of liquid guiding elements end to end, to implement stable liquid supply. The three sections of liquid guiding elements are all one-piece cotton. One-piece cotton liquid guiding modes are classified into radial liquid guiding and axial liquid guiding. If the material is uniform, in the same one-piece cotton, the radial liquid guiding speed and the axial liquid guiding speed are equivalent, and the liquid guiding speed at the contact surface between two adjacent liquid guiding elements may decrease. In the present application, two adjacent liquid guiding elements are connected through the axial end surfaces, and the liquid guiding speed at the contact surface may decrease. Two contact surfaces are formed between the three sections of liquid guiding elements. This can ensure that the overall liquid guiding speed decreases, and the liquid transfer speed is controlled not to be excessively high, thereby avoiding leakage during inhalation caused by the fact that the liquid guiding elements are quickly saturated. Certainly, the multi-stage liquid guiding system may alternatively be formed by only two sections of liquid guiding elements. One contact surface is formed between the two sections of liquid guiding elements. This can be used to slow down liquid transfer too. In some other embodiments, the multi-stage liquid guiding system may alternatively be formed by connecting more than three sections of liquid guiding elements end to end.
In some embodiments, the atomizer 100 may further include a support pipe 17. The at least two sections of the liquid guiding elements 15 at least partially wrap around the support pipe 17. The fixed pipe 13 and the support pipe 17 cooperate to support and fix the at least two sections of liquid guiding elements 15. Specifically, both the first liquid guiding element 151 and the second liquid guiding element 152 may sleeve the support pipe 17, and the atomization core 16 may be arranged in the support pipe 17. At least one opening 170 is formed in the support pipe 17, and the second liquid guiding element 152 is in contact with the atomization core 16 through the opening 170, to implement liquid guiding between the second liquid guiding element 152 and the atomization core 16. Preferably, a plurality of openings 170 are provided, which may be uniformly spaced apart in the circumferential direction of the support pipe 17, to implement uniform liquid suppl.
The second liquid guiding element 152 may sleeve the support pipe 17 in a press fit manner. That is, the inner diameter of the second liquid guiding element 152 is less than the outer diameter of the support pipe 17, to ensure that the second liquid guiding element 152 is in reliable contact with the atomization core 16 to implement liquid guiding. The inner diameter of the first liquid guiding element 151 may be equal to, slightly greater than, or slightly less than the outer diameter of the support pipe 17. The inner diameter of the first liquid guiding element 151 is greater than the inner diameter of the second liquid guiding element 152. The first liquid guiding element 151 sleeves the support pipe 17 in a relatively loose manner, thereby avoiding the impact on the liquid storage volume of the first liquid guiding element 151 due to an increase in the density of the first liquid guiding element 151 caused by excessive pressing.
The support pipe 17 may be made of a metal material such as stainless steel. The metal material has the advantages of high intensity, high-temperature resistance, zero pollution, zero odor, low cost, and the like. Certainly, in other embodiments, the support pipe 17 may alternatively be made of another material such as glass fibers or plastic.
The upper end surface of the base 12 may be recessed to form an accommodating cavity 120. The lower end of the fixed pipe 13 may be embedded into the accommodating cavity 120 and presses against the bottom surface of the accommodating cavity 120. The lower end surface of the support pipe 17 may alternatively press against the bottom surface of the accommodating cavity 120. In some embodiments, the base 12 may be made of an elastic seal material such as silicone. This can enhance a sealing effect on the opening in the lower end of the housing 11 and the outer wall surface of the lower end of the fixed pipe 13. Certainly, in other embodiments, the base 12 may alternatively be made of another material such as plastic. A seal member may be arranged between the outer wall surface of the base 12 and the inner wall surface of the housing 11, and/or a seal member may be arranged between the inner wall surface of the base 12 and the outer wall surface of the fixed pipe 13, to enhance a sealing effect.
In some embodiments, the atomizer 100 may further include a support element 141 arranged at the lower end of the fixed pipe 13 and a seal cover 18 arranged at the upper end of the fixed pipe 13. The support element 141 is arranged between the fixed pipe 13 and the support pipe 17, and is configured to support the first liquid guiding element 151. The lower end surface of the support element 141 may press against the bottom surface of the accommodating cavity 120, and the lower end surface of the first liquid guiding element 151 may press against the upper end surface of the support element 141.
In some embodiments, the outer wall surface of the support element 141 may be further recessed to form a liquid storage groove 1410. The liquid storage groove 1410 has the particular extension length and can buffer the particular amount of leaking liquid, thereby further enhancing a liquid leakage preventing effect. In some embodiments, the liquid storage groove 1410 may include a plurality of annular grooves 1411 extending in the circumferential direction of the support element 141 and a communication port 1412 for communicating every two adjacent annular grooves 1411. Certainly, in other embodiments, the liquid storage groove 1410 may alternatively be in another shape such as a spiral shape.
The seal cover 18 is hermetically arranged between the inner wall surface of the upper end of the fixed pipe 13 and the outer wall surface of the inhalation channel 112, to hermetically isolate the liquid storage cavity 110 from the inhalation channel 112. The lower end surface of the seal cover 18 may press against the upper end surface of the third liquid guiding element 153, to clamp and fix the three sections of liquid guiding elements 15 together with the support element 141.
In some embodiments, the atomizer 100 may further include a plug 142 arranged in the lower end of the support pipe 17. An air inlet channel 1420 through which external air flow enters the atomization cavity 1610 is arranged on the plug 142. The plug 142 is located at the lower end of the atomization core 16, and can further achieve a liquid leakage preventing effect.
FIG. 5 to FIG. 7 show an electronic atomization device 1 in a second embodiment of the present application. A main difference between the electronic atomization device 1 in this embodiment and the electronic atomization device in first embodiment is as follows: The atomizer 100 in this embodiment further includes a seal member 19. The seal member 19 is arranged in the fixed pipe 13 and is located between the second liquid guiding element 152 and the third liquid guiding element 153. A vent hole 190 is formed in the seal member 19 in a penetrating manner, so as to communicate the atomization cavity 1610 with the air outlet channel 1530.
Specifically, the seal member 19 may be made of an elastic seal material such as silicone. The seal member 19 may include a main body portion 191 and an extension portion 192 extending downward from the lower end surface of the main body portion 191. The vent hole 190 penetrates through the main body portion 191 and the extension portion 192 in the axial direction. The outer wall surface of the main body portion 191 is in seal fit with the inner wall surface of the fixed pipe 13, and the lower end surface of the main body portion 191 may press against the upper end surface of the support pipe 17. The lower end surface of the third liquid guiding element 153 presses against the upper end surface of the main body portion 191, and the upper end surface of the second liquid guiding element 152 presses against the lower end surface of the main body portion 191. That is, the second liquid guiding element 152 and the third liquid guiding element 153 are not in contact, but liquid guiding is implemented. However, the third liquid guiding element 153 can have a function of absorbing condensate, so as to reduce leakage during inhalation.
The outer diameter of the extension portion 192 is less than the outer diameter of the main body portion 191. The extension portion 192 is embedded into the support pipe 17, and the outer diameter of the extension portion 192 is matched with the inner diameter of the support pipe 17. A gap may be formed between the lower end surface of the extension portion 192 and the upper end surface of the atomization core 16. It is conductive for heat insulation between the extension portion 192 and the atomization core 16.
An opening 170 and a vent groove 171 communicated with the opening 170 are provided in the side wall of the support pipe 17. The opening 170 allows the second liquid guiding element 152 to c be in contact with the atomization core 16. The cross-sectional area of the opening 170 is large to ensure that the second liquid guiding element 152 and the atomization core 16 have a sufficient contact area. The vent groove 171 may extend upward from the upper end of the opening 170 in the axial direction, and the vent groove 171 is at least partially arranged at the portion of the support pipe 17 that sleeves the extension portion 192. That is, the vent groove 171 is at least partially arranged between the extension portion 192 and the second liquid guiding element 152. The width of the vent groove 171 is much less than the width of the opening 170.
An aerosol generating substrate in the liquid storage cavity 110 gradually enters the first liquid guiding element 151 through the liquid inlet hole 130 of the fixed pipe 13. The second liquid guiding element 152 is connected to the first liquid guiding element 151 through the end surfaces. The aerosol generating substrate is also gradually transferred to the second liquid guiding element 152. The aerosol generating substrate in the second liquid guiding element 152 continues to be transferred to the atomization core 16 for atomization. Along with the atomization, the aerosol generating substrate in the atomization core 16 is ceaselessly consumed, and the aerosol generating substrate in the second liquid guiding element 152 continues to be transferred to the atomization core 16, thus forming a complete liquid supply process.
At present, only one vent threshold is designed in a high-capacity electronic atomization device product. If a conventional vent threshold is designed, along with the inhalation, a liquid level in the liquid storage cavity 110 decreases; air is continuously exchanged from the liquid storage cavity 110; the liquid transfer rate of the aerosol-forming material may be gradually increased; and an excessive aerosol generating substrate will enter the atomization core 16, so that the problem of leakage during inhalation easily occurs in the later stage of inhalation. If the vent threshold is increased, the liquid transfer is slowed down, and the problem of leakage during inhalation in the later stage can be improved. However, since the liquid transfer in the early stage is also synchronously slowed down, a problem of insufficient liquid supply may occur, and flavor distortion or dry hits easily occurs. It is difficult to implement a balance between zero dry hits in the early stage of inhalation and zero leakage in the later stage of inhalation.
However, in this embodiment, two negative pressure tanks (a first-level negative pressure tank N1 and a second-level negative pressure tank N2) are formed in the atomizer 100. When transferred to the atomization core 16, the aerosol generating substrate in the liquid storage cavity 110 may sequentially pass through the first-level negative pressure tank N1 and the second-level negative pressure tank N2. By adjusting negative pressures in the two negative pressure tanks hierarchically, the two negative pressure tanks respectively control the liquid transfer to form different vent thresholds, thus implementing compatibility between two inhalation states.
The first-level negative pressure tank N1 is formed in the liquid storage cavity 110, and is a closed region enclosed by the housing 11, the fixed pipe 13, the first liquid guiding element 151, and the base 12. A conventional vent threshold is employed in the first-level negative pressure tank N1. This can ensure that the liquid transfer in the early stage of inhalation meets a requirement of liquid supply balance and provides a good taste.
The second-level negative pressure tank N2 is a closed region enclosed by the fixed pipe 13, the seal member 19, the support pipe 17, the atomization core 16, the second liquid guiding element 152, and the first liquid guiding element 151. The second-level negative pressure tank N2 includes a vent groove 171. After the vent groove 171 is wrapped and moisturized by the second liquid guiding element 152, a liquid film seals the vent groove 171 to form a vent structure. The thickness of the liquid film may change based on a change in the amount of transferred liquid, so that the second-level negative pressure tank N2 can automatically adjust the vent threshold within a particular range. The second-level negative pressure tank N2 uses the liquid film to seal the vent groove 171. The dynamically changing liquid film can provide a large vent threshold in the later stage of inhalation, to ensure that the liquid transfer is not excessively quick, thereby reducing occurrence of leakage during inhalation.
Specifically, the conventional vent threshold is employed in the first-level negative pressure tank N1, so that the aerosol generating substrate in the liquid storage cavity 110 may smoothly pass through the liquid inlet hole 130 of the fixed pipe 13 and enter the first liquid guiding element 151. The first liquid guiding element 151 is a boundary line between the first negative pressure tank N1 and the second negative pressure tank N2. When transferred to the atomization core 16 through the second liquid guiding element 152, the aerosol generating substrate may be affected by a negative pressure of the second negative pressure tank N2. The vent structure formed by sealing the vent groove 171 through the liquid film can control the pressure in the second negative pressure tank N2, thus forming a particular vent threshold which has a particular buffer effect on liquid transfer. This can ensure that the liquid transfer in this place is not excessively quick, thereby ensuring a proper liquid supply state.
Along with the decrease in the liquid level of the liquid storage cavity 110, the decreasing speed of the aerosol generating substrate in the liquid storage cavity 110 gradually increases. The amount of the aerosol generating substrate in the transferring process may increase. The amount of the aerosol generating substrate in the second liquid guiding element 152 may increase. The liquid film at the vent groove 171 becomes thick, so that the difficulty of ventilation at this place increases, and the vent threshold is increased. Thus, the amount of the aerosol generating substrate entering the atomization core 16 is reduced, and the problem of leakage during inhalation due to the excessive aerosol generating substrate is avoided.
It can be understood that the foregoing technical features can be used in any combination without limitation.
The embodiments only express the specific implementations of the present application, and the descriptions are specific and detailed, but cannot be understood as limitations on the patent scope of the present application. It should be noted that, a person of ordinary skill in the art may freely combine the technical features and make several variations and improvements without departing from the idea of the present application, and the variations and improvements all fall within the protection scope of the present application. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present application shall fall within the scope of the claims of the present application.

Claims

An atomizer, characterized by comprising:
a liquid storage cavity (110);

an atomization core (16);

a fixed pipe (13) at least partially arranged in the liquid storage cavity (110) and provided with at least one liquid inlet hole (130); and

a first liquid guiding element (151) and a second liquid guiding element (152) that are sequentially arranged in the fixed pipe (13) in an axial direction,

wherein the first liquid guiding element (151) is in liquid guiding communication with the liquid storage cavity (110) through the at least one liquid inlet hole (130), and the second liquid guiding element (152) surrounds at least the portion of the atomization core (16); and

the density of the first liquid guiding element (151) is less than the density of the second liquid guiding element (152).
The atomizer of claim 1, characterized in that the second liquid guiding element (152) is located above the upper end of the first liquid guiding element (151).
The atomizer of claim 1, characterized in that the first liquid guiding element (151) and the second liquid guiding element (152) are both liquid guiding cotton; the density of the first liquid guiding element (151) is 0.06 g/cm³ to 0.1 g/cm³; and the density of the second liquid guiding element (152) is 0.1 g/cm³ to 0.15 g/cm³.
The atomizer of claim 1, characterized in that the thickness of the first liquid guiding element (151) is greater than the thickness of the second liquid guiding element (152).
The atomizer of claim 1, characterized in that the outer diameter of the first liquid guiding element (151) is equivalent to the inner diameter of the fixed pipe (13); the outer diameter of the second liquid guiding element (152) is less than the inner diameter of the fixed pipe (13).
The atomizer of claim 1, characterized in that the inner diameter of the first liquid guiding element (151) is greater than the inner diameter of the second liquid guiding element (152).
The atomizer of claim 1, characterized by further comprising a third liquid guiding element (153), wherein the first liquid guiding element (151), the second liquid guiding element (152), and the third liquid guiding element (153) are sequentially arranged in the fixed pipe (13) from bottom to top in the axial direction.
The atomizer of claim 7, characterized in that the density of the third liquid guiding element (153) is greater than the density of the first liquid guiding element (151).
The atomizer of claim 7, characterized in that the third liquid guiding element (153) is in end-surface contact with the second liquid guiding element (152); and the liquid absorption speed of the first liquid guiding element (151) and the liquid absorption speed of the second liquid guiding element (152) are both greater than the liquid absorption speed of the third liquid guiding element (153).
The atomizer of claim 7, characterized in that the third liquid guiding element (153) is liquid guiding cotton, and the density of the third liquid guiding element (153) is 0.1 g/cm³ to 0.15 g/cm³.
The atomizer of claim 7, characterized in that the first liquid guiding element (151), the second liquid guiding element (152), and the third liquid guiding element (153) are one-piece cotton.
The atomizer of claim 1, characterized in that the inner diameter of the second liquid guiding element (152) is less than or equal to the outer diameter of the atomization core (16).
The atomizer of claim 1, characterized by further comprising a support pipe (17) arranged in the fixed pipe (13), wherein the first liquid guiding element (151) and the second liquid guiding element (152) sleeve the support pipe (17); the atomization core (16) is arranged in the support pipe (17); and at least one opening (170) for implementing liquid guiding communication between the atomization core (16) and the second liquid guiding element (152) is formed in the support pipe (17).
The atomizer of claim 13, characterized by further comprising a seal member (19), wherein the seal member (19) comprises a main body portion (191) that is in seal fit with the inner wall surface of the fixed pipe (13), and an extension portion (192) embedded into the support pipe (17);
the second liquid guiding element (152) and the support pipe (17) press against the lower end surface of the main body portion (191);

at least one vent groove (171) communicated with the at least one opening (170) is formed in the support pipe (17);

the at least one vent groove (171) is at least partially located between the extension portion (192) and the second liquid guiding element (152); and

after the at least one vent groove (171) is wrapped and moisturized by the second liquid guiding element (152), a liquid film seals the at least one vent groove (171) to form a vent structure.
An electronic atomization device, characterized by comprising:
a shell (300), wherein a first cavity (301) and a second cavity (302) that are spaced apart from each other are formed inside the shell (300), and a liquid storage cavity (110) is formed inside the first cavity (301);

a battery (200) arranged in the second cavity (302);

an atomization core (16) arranged in the first cavity (301);

a fixed pipe (13) at least partially arranged in the liquid storage cavity (110) and provided with at least one liquid inlet hole (130); and

a first liquid guiding element (151) and a second liquid guiding element (152) that are sequentially arranged in the fixed pipe (13) in an axial direction,

wherein the first liquid guiding element (151) is in liquid guiding communication with the liquid storage cavity (110) through the at least one liquid inlet hole (130), and the second liquid guiding element (152) surrounds at least the portion of the atomization core (16); and

the density of the first liquid guiding element (151) is less than the density of the second liquid guiding element (152).