WO2024045181A1

WO2024045181A1 - Atomizing core and electronic cigarette

Info

Publication number: WO2024045181A1
Application number: PCT/CN2022/116840
Authority: WO
Inventors: 伍鹏飞
Original assignee: 深圳市锐丽科技有限公司
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2024-03-07

Abstract

An atomizing core and an electronic cigarette. The atomizing core comprises: two porous fiber material matrixes (1), which serve as structural members of the atomizing core and are configured to provide mechanical support for the atomizing core; a heating atomizing element (2), which is embedded between the two porous fiber material matrixes (1); and a coating sheet (3), which is configured to cover the two porous fiber material matrixes (1) so as to fix the heating atomizing element (2), wherein the heating atomizing element (2) comprises a porous metal fiber felt (2-1) and two electrodes (2-2), the porous metal fiber felt (2-1) being connected to the two electrodes (2-2).

Description

Atomizer core and electronic cigarette

Technical field

The present disclosure belongs to the technical field of electronic cigarettes, and specifically relates to an atomizing core and an electronic cigarette.

Background technique

Since the emergence of e-cigarettes, the pursuit of safety and taste has prompted continuous innovation in e-cigarette related technologies. As the core component of e-cigarettes, the atomizer core plays a decisive role in the aerosol safety and taste of e-cigarettes.

At present, the atomizing core of electronic cigarettes is ceramic atomizing core. Ceramic atomizer cores generally include a porous fiber material matrix and a heating circuit. Heating circuits include resistance wire, etched mesh, and thick film printed circuits in various forms. These forms of heating circuits are all solid heating elements. During atomization, the heating circuit generates heat and transfers it to the porous fiber material. Then, a thermal gradient is formed around the heating element. The porous fiber material heats and vaporizes the atomized liquid to form an atomized aerosol. .

However, during atomization, the heat generated by the heating circuit is transferred to the surrounding porous fiber material, and the porous fiber material reheats the atomization liquid. Through two transfers, more useless work is generated, most of the power is lost, and the atomization efficiency is reduced. Low, the explosive power during atomization is weak, affecting the user experience.

public content

In view of this, the present disclosure provides an atomization core and an electronic cigarette to solve the existing technical problems of low atomization efficiency and weak explosive power of the atomization chamber.

In order to achieve the above object, the present disclosure provides an atomization core on one hand, including: two porous fiber material matrices, as structural parts of the atomization core, configured to provide mechanical support for the atomization core; a heating atomization element , embedded between two porous fiber material matrices; the covering sheet is configured to cover the two porous fiber material matrices to fix the heating atomization element; wherein the heating atomization element includes a porous metal fiber felt and two There are two electrodes, and the porous metal fiber felt is connected to the two electrodes.

According to embodiments of the present disclosure, the material of the coating sheet is metal material, plastic material or resin material, and the thickness of the coating sheet is 0.03-1 mm.

According to embodiments of the present disclosure, one side of the porous metal fiber felt is embedded between two porous fiber material matrices; the depth of the embedding is 0.1 to 2 mm.

According to embodiments of the present disclosure, the porous fiber material matrix has a porosity of 35 to 95%, a pore diameter ranging from 5 to 50 μm, and a gram weight of the porous fiber material matrix of 10 to 1000 g/m ² .

According to an embodiment of the present disclosure, the porous metal fiber mat is welded and connected with two electrodes.

According to embodiments of the present disclosure, the pores of the porous metal fiber felt are through pores, and the pore size is 3 to 100 μm; the diameter of the porous metal fiber felt is 2 to 50 μm; the thickness of the porous metal fiber felt is 0.1 to 1 mm; the porous metal fiber felt The materials include metal fibers.

According to embodiments of the present disclosure, the porous metal fiber mat is formed by cutting, paving, laminating, and sintering metal fibers.

According to embodiments of the present disclosure, the metal fibers include at least one of the following: stainless steel metal fibers, iron-chromium-aluminum metal fibers, titanium-nickel metal fibers, nickel metal fibers and Hastelloy fibers.

According to embodiments of the present disclosure, the fiber material of the porous fiber material matrix is a porous media material, and the porous media material is an organic material formed by one or more combinations of natural plant fibers, artificial cellulose fibers, artificial synthetic fibers or ceramic fibers. or inorganic materials. Another aspect of the present disclosure also provides an electronic cigarette, including the above-mentioned atomizing core.

Based on the above technical solutions, the atomizing core and electronic cigarette provided by the present disclosure can achieve at least one of the following technical effects:

(1) The atomizing core provided by the present disclosure includes porous fiber materials, heating atomizing elements and covering sheets. As a structural component, porous fiber materials are configured to provide mechanical support for the atomizer core and have the functions of liquid conduction and liquid storage. The heating atomization element has the functions of heating, liquid storage and liquid conduction. The atomization efficiency is high, the atomization explosive power is strong, and the user experience is good.

(2) In the present disclosure, the atomization interface of the atomization core is a porous metal fiber felt. The micropores inside the porous metal fiber felt are through holes, which can fully atomize the atomization liquid, rapidly exchange heat, and effectively and quickly reduce the heat-generating atomization element. temperature to prevent the heating atomization element from exceeding the critical heat flow to form high fever and produce harmful gases, thus improving the safety of atomized aerosols.

(3) The heating element in the heating atomization element in the present disclosure is a porous metal fiber felt. The porous metal fiber felt can generate heat when working and can quickly absorb liquid. It can quickly heat and atomize atomized substances with different viscosities. It can also quickly atomize room-temperature paste-like substances without preheating.

Description of drawings

Figure 1 schematically shows a structural diagram of an atomizing core according to an embodiment of the present disclosure;

Figure 2 is a cross-sectional view along plane A-A in Figure 1 .

[Explanation of reference symbols]

1-Porous fiber material matrix; 2-Heating atomization element; 2-1-Porous metal fiber felt; 2-2-Electrode; 3-Coating sheet.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure more clear, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

In traditional fiber material atomization cores, the atomization interface is on the fiber material around the outer surface of the heating wire. When the heating circuit heats up, it transfers heat to the surrounding fiber material. The fiber material then heats the atomization liquid, which requires two heat transfers. It produces more useless work and loses most of the power, resulting in low atomization efficiency and weak explosive power during atomization, which affects the user experience.

To this end, the present disclosure provides an atomization core, which uses porous metal fiber felt as the core component of the heating atomization element, and the atomization interface is porous metal fiber felt, which effectively improves the atomization efficiency, enhances the explosive power during atomization, and improves the user experience. experience.

FIG. 1 schematically shows a structural diagram of an atomizing core according to an embodiment of the present disclosure; FIG. 2 is a cross-sectional view along plane A-A in FIG. 1 .

As shown in Figures 1 and 2, the atomization core can include: two porous fiber material matrices 1, a heating atomization element 2 including a porous metal fiber felt 2-1 and an electrode 2-2, and a covering sheet 3. The following is a detailed description of the components of the atomizer core.

The two porous fiber material matrices 1 can serve as structural parts of the atomizer core and are configured to provide mechanical support for the atomizer core.

The heating atomization element 2 may include a porous metal fiber felt 2-1 and two electrodes 2-2. The porous metal fiber felt 2-1 is connected to the two electrodes 2-2 respectively. Among them, the two electrodes can be used as the positive electrode and the negative electrode respectively. The heating atomizing element 2 can be embedded between two porous fiber material matrices.

The covering sheet 3 can be configured to cover two porous fiber material matrices containing heating atomizing elements to fix the heating atomizing elements.

According to embodiments of the present disclosure, the fiber material of the porous fiber material matrix may be a porous media material, and the porous media material may be formed by one or more combinations of natural plant fibers, artificial cellulose fibers, artificial synthetic fibers or ceramic fibers. of organic or inorganic materials.

According to embodiments of the present disclosure, natural plant fibers are also called natural cellulose fibers, which can be obtained from seeds, fruits, stems, leaves, etc. of plants, and can include seed fibers, bast fibers, leaf fibers, etc.

According to embodiments of the present disclosure, the porous fiber material matrix has a porosity of 35 to 95%, a pore diameter in a range of 5 to 50 μm, and a gram weight of the porous fiber material matrix of 10 to 1000 g/m ² .

According to embodiments of the present disclosure, the speed and liquid storage volume of the atomized liquid can be adjusted by adjusting the porosity of the porous fiber material matrix, so that an appropriate temperature field of the heating atomizing element can be designed, and the aerosol can be controlled with appropriate output power. Particle size distribution and smoke volume.

According to the embodiment of the present disclosure, the heating atomizing element 2 is connected by welding the porous metal fiber felt 2-1 and the two electrodes 2-2. The two electrodes 2-2 are welded to both sides of the porous metal fiber felt respectively to form a circuit connection.

According to an embodiment of the present disclosure, embedding the heating atomization element 2 between two fiber material matrices 2 may include: arranging one side of the porous metal fiber felt 2-1 between the two fiber material matrices 2, The porous fiber material matrix is then covered with the coating sheet 3, that is, the porous fiber material matrix is covered with the coating sheet 3. During the coating process, the porous fiber material matrix embedded with the heating atomizing element is Keep that side without covering.

According to embodiments of the present disclosure, the pore size of the porous metal fiber mat may be 3 μm, 10 μm, 20 μm, 40 μm, 60 μm, 80 μm, and 100 μm; the diameter of the porous metal fiber mat may be 2 μm, 10 μm, 20 μm, 30 μm, 40 μm, and 50 μm; The thickness of porous metal fiber felt can be 0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm.

According to embodiments of the present disclosure, the pore structure inside the porous metal fiber mat can be designed arbitrarily, and can be round holes, square holes, irregular pores, etc. Due to the surface tension of the e-cigarette aerosol. The capillary action and the strong lipophilicity of the porous metal fiber felt allow the aerosol of e-cigarettes to fully adhere to the surroundings of the porous metal fiber felt, and can also fully infiltrate into the pores inside the porous metal fiber felt to absorb liquid. With the function of liquid storage, the heat generated by the electrified heating atomization element can quickly heat the surrounding materials, and can atomize atomized materials of different viscosities at high speed. At the same time, paste-like atomized materials can be atomized directly without preheating, thus improving the efficiency of the atomization process. Atomization efficiency.

According to embodiments of the present disclosure, the metal fibers may include at least one of the following: stainless steel metal fibers, iron-chromium-aluminum metal fibers, titanium-nickel metal fibers, nickel metal fibers, and Hastelloy fibers.

According to embodiments of the present disclosure, the porous metal fiber mat is formed by cutting, paving, laminating, sintering, and other processes of metal fibers. Since the pores formed by the porous metal fiber felt are through holes, they can fully contact the atomized liquid to form a strong heat exchange system, which can avoid pore blocking caused by dry burning of the atomized liquid and avoid the formation of carbon deposits. The through holes of the porous metal fiber felt can make the oil conduction efficiency higher, effectively reduce the operating temperature of the heating atomization element, and prevent the temperature of the heating atomization element from rising above the critical temperature when the heat transfer conditions deteriorate, resulting in the generation of cracked atomization liquid. of harmful substances.

According to embodiments of the present disclosure, the embedding depth of the heating atomizing element 2 between the two porous fiber material matrices 2 may be 0.1 to 2 mm.

According to embodiments of the present disclosure, the embedding depth may be 0.1mm, 0.5mm, 1mm, 1.5mm, or 2mm.

According to embodiments of the present disclosure, with different embedding depths, when the atomizing core atomizes the atomizing liquid, the amount of atomized smoke will also be different.

According to embodiments of the present disclosure, the porous fiber material matrix mainly bears structural mechanical support in the atomization core, and is responsible for transporting electronic cigarettes to the heating atomization element through the microporous capillary action formed by the interweaving of the fibers of the fiber material itself in the porous fiber material matrix. chemical,

According to embodiments of the present disclosure, the material of the coating sheet may be metal material, plastic material or resin material, and the thickness of the coating sheet may be 0.03-1 mm.

According to embodiments of the present disclosure, the thickness of the coating sheet may be 0.03mm, 0.05mm, 0.07mm, 0.09mm, or 1mm.

According to embodiments of the present disclosure, the covering sheet may be a material with or without through holes. The covering sheet material is a metal material and may preferably be a mesh sheet, and the mesh size may be 0.1 mm to 2 mm. The coating sheet can be processed into a semi-closed strip shape through a forming process.

According to embodiments of the present disclosure, the covering sheet may also be a high-temperature resistant plastic material or a high-temperature resistant resin material, covering the fiber material matrix to fix the heating atomization element between the two porous fiber material matrices.

According to embodiments of the present disclosure, the coating can cover the porous fiber material matrix through physical methods, without the need to perform a molding process to mold the porous fiber material matrix and the coating sheet to obtain the atomization core.

The present disclosure also provides an electronic cigarette, including the above-mentioned atomizing core. The atomizing core is installed in the electronic cigarette body. When the atomizing core is used, the atomizing liquid flows into the porous fiber material matrix. Through the capillary action of the micropore gaps inside the porous fiber material matrix, the atomizing liquid is introduced from the oil guide groove into two porous holes. Inside the porous metal fiber felt of the heating atomization element between the fiber material matrix, the porous metal fiber felt heats and atomizes the atomized liquid adsorbed by itself. According to the microchannel film boiling model, during boiling and gasification, the atomized liquid bubbles burst and vaporize at the atomization interface, forming a negative pressure at the atomization interface. The liquid in the microchannel is continuously replenished to the atomization interface for consumption under the action of pressure difference. The heat vaporizes and boils to form an aerosol.

The technical features of the above embodiments can be combined in any way. In order to simplify the description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all possible combinations should be used. It is considered to be within the scope of this manual.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present disclosure in detail. It should be understood that the above are only specific embodiments of the present disclosure and are not configured to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this disclosure shall be included in the protection scope of this disclosure.

Claims

An atomizing core, which includes:

Two porous fiber material matrices, as structural members of the atomization core, are configured to provide mechanical support for the atomization core;

The heating atomization element is embedded between the two porous fiber material matrices;

A covering sheet configured to cover the two porous fiber material matrices containing the heating atomization element to fix the heating atomization element;

Wherein, the heating atomization element includes a porous metal fiber felt and two electrodes, and the porous metal fiber felt is connected to the two electrodes.
The atomization core according to claim 1, wherein the material of the coating sheet is a metal material, a plastic material or a resin material, and the thickness of the coating sheet is 0.03-1 mm.
The atomization core according to claim 1, wherein one side of the porous metal fiber felt is embedded between the two porous fiber material matrices; the depth of the embedding is 0.1 to 2 mm.
The atomization core according to claim 1, wherein the porous fiber material matrix has a porosity of 35 to 95% and a pore diameter range of 5 to 50 μm; and the porous fiber material matrix has a gram weight of 10 to 1000 g/m 2 .
The atomization core according to claim 1, wherein the porous metal fiber felt is welded to the two electrodes.
The atomization core according to claim 1, wherein the pores of the porous metal fiber felt are through holes and the pore size is 3 to 100 μm; the diameter of the porous metal fiber felt is 2 to 50 μm; the porous metal fiber The thickness of the felt is 0.1-1 mm; the material of the porous metal fiber felt includes metal fibers.
The atomization core according to claim 6, wherein the porous metal fiber felt is formed by cutting, paving, laminating, and sintering the metal fibers.
The atomization core according to claim 6, wherein the metal fiber includes at least one of the following: stainless steel metal fiber, iron-chromium-aluminum metal fiber, titanium-nickel metal fiber, nickel metal fiber and Hastelloy fiber.
The atomization core according to claim 1, wherein the fiber material of the porous fiber material matrix is a porous medium material, and the porous medium material is made of natural plant fiber, artificial cellulose fiber, artificial synthetic fiber or ceramic fiber. One or more combinations of organic or inorganic materials.
An electronic cigarette, which includes the atomizing core according to any one of claims 1 to 9.