US-20260123681-A1 - ATOMIZING CORE, ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE

US20260123681A1US 20260123681 A1US20260123681 A1US 20260123681A1US-20260123681-A1

Abstract

The disclosure relates to an atomizing core, an atomizer, and an electronic atomization device. The atomizing core includes: a substrate, having an atomization surface and being configured to buffer and conduct a liquid; a heating element, configured to generate heat to atomize the liquid to form smoke; and a protective layer, provided on the atomization surface and comprising a vent hole or micropores to enable the smoke to overflow from the protective layer.

Inventors

Zhao Zhang
Hongliang Luo
Congwen XIAO

Assignees

SHENZHEN SMOORE TECHNOLOGY LIMITED

Dates

Publication Date: 20260507
Application Date: 20260105
Priority Date: 20201020

Claims (20)

1 . An atomizing core, comprising: a substrate, having an atomization surface and being configured to buffer and conduct a liquid; a heating element, configured to generate heat to atomize the liquid to form smoke; and a protective layer, provided on the atomization surface and comprising a vent hole or micropores to enable the smoke to overflow from the protective layer.
2 . The atomizing core according to claim 1 , wherein a thickness of the protective layer ranges from 100 μm to 500 μm.
3 . The atomizing core according to claim 1 , wherein the protective layer has a covering surface and a bottom surface, the bottom surface and the covering surface face oppositely and are spaced along a thickness direction of the protective layer, the covering surface faces the atomization surface of the substrate, and the bottom surface faces away from the atomization surface.
4 . The atomizing core according to claim 1 , wherein the vent hole is arranged obliquely with respect to the atomization surface.
5 . The atomizing core according to claim 1 , wherein the vent hole at least comprises a first bending section and a second bending section which are in communication with each other, a central axis of the first bending section is arranged at an angle with the atomization surface, and a central axis of the second bending section is arranged at an angle with the central axis of the first bending section.
6 . The atomizing core according to claim 1 , wherein the protective layer has a covering surface provided towards the atomization surface, the covering surface is recessed to form a groove, and the heating element is matched with the groove, or at least a part of the heating element is matched with the groove.
7 . The atomizing core according to claim 1 , wherein the protective layer is provided with a through groove that passes through the entire protective layer, one end of the through groove passes through a bottom surface of the protective layer, the other end of the through groove passes through the covering surface of the protective layer, the heating element is located in the through groove and is matched with the through groove.
8 . The atomizing core according to claim 7 , wherein the through groove is arranged obliquely with respect to the atomization surface.
9 . The atomizing core according to claim 7 , wherein a cross section of the through groove at least comprises a first bending portion and a second bending portion which are in communication with each other, a central axis of the first bending portion is arranged at an angle with the atomization surface, and a central axis of the second bending portion is arranged at an angle with the central axis of the first bending portion.
10 . The atomizing core according to claim 1 , wherein the substrate is made of a ceramic material or a glass material and a thickness of the substrate ranges from 2 mm to 5 mm.
11 . The atomizing core according to claim 1 , wherein the protective layer has a membrane-shaped structure, and the protective layer is a porous ceramic layer made of a porous ceramic material.
12 . The atomizing core according to claim 11 , wherein the protective layer has a porosity, and the porosity ranges from 20% to 70%.
13 . The atomizing core according to claim 1 , wherein the heating element comprises a heating portion and two electrode portions, one of the electrode portions serves as a positive electrode and is electrically connected to one end of the heating portion, and the other electrode portion serves as a negative electrode and is electrically connected to the other end of the heating portion.
14 . The atomizing core according to claim 13 , wherein the heating portion has a membrane-shaped structure, a thickness of the membrane-shaped heating portion ranges from 30 μm to 130 μm.
15 . The atomizing core according to claim 13 , wherein the vent hole forms a through opening on the covering surface, the through opening has an orthographic projection on the atomization surface, and the orthographic projection is kept at a set distance from a coverage of the heating portion.
16 . The atomizing core according to claim 13 , wherein the heating portion is provided on the substrate by screen printing.
17 . The atomizing core according to claim 14 , wherein the heating portion is a dense metal film or a porous metal film.
18 . The atomizing core according to claim 13 , wherein the electrode portions each have a line-shaped structure or a membrane-shaped structure.
19 . An atomizer, comprising a liquid storage cavity, and the atomizing core of claim 1 , and the substrate further has a liquid absorption surface facing opposite to the atomization surface, the liquid absorption surface is configured to absorb a liquid in the liquid storage cavity into the substrate.
20 . An electronic atomization device, comprising: a power supply; and the atomizer of claim 19 , the power supply being electrically connected to the heating element of the atomizer.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation application of U.S. application Ser. No. 17/504,714, filed on Oct. 19, 2021, which itself claims priority to Chinese Patent Application No. 202011122841.1, filed on Oct. 20, 2020, and entitled “Atomizing Core, Atomizer and Electronic Atomization Device”, the content of which is expressly incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the field of atomization technology, and particularly to an atomizing core, an atomizer and an electronic atomization device. BACKGROUND The electronic atomization devices have an appearance and taste similar to ordinary cigarettes, but usually do not contain other harmful components such as tar, suspended particles and the like in the cigarettes. Therefore, the electronic atomization devices are commonly used as substitutes for the cigarettes. An electronic atomization device usually includes an atomizer. The atomizer includes an atomizing core. The atomizing core includes a substrate and a heating element. The substrate blocks a liquid storage cavity in the atomizer and can buffer and conduct the liquid in the liquid storage cavity. The heating element is arranged on the substrate and configured to atomize the liquid conducted to the substrate to form smoke that can be sucked by the user. However, for conventional atomizers, smoke accumulates on the surface of and around the heating element, as the smoke continues to accumulate, it will lead to formation of burnt or other peculiar smells in the smoke, thereby affecting the user experience. SUMMARY The technical problem to be solved by the present disclosure is how to prevent the tobacco soot from accumulating on the surface and periphery of the heating element. An atomizing core, including: a substrate, having an atomization surface and being configured to buffer and conduct a liquid; a heating element, configured to generate heat to atomize the liquid to form smoke; and a protective layer, provided on the atomization surface and comprising a vent hole or micropores to enable the smoke to overflow from the protective layer. In an embodiment, a thickness of the protective layer ranges from 100 μm to 500 μm. In an embodiment, the protective layer has a covering surface and a bottom surface, the bottom surface and the covering surface face oppositely and are spaced along a thickness direction of the protective layer, the covering surface faces the atomization surface of the substrate, and the bottom surface faces away from the atomization surface. In an embodiment, the vent hole is arranged obliquely with respect to the atomization surface. In an embodiment, the vent hole at least comprises a first bending section and a second bending section which are in communication with each other, a central axis of the first bending section is arranged at an angle with the atomization surface, and a central axis of the second bending section is arranged at an angle with the central axis of the first bending section. In an embodiment, the protective layer has a covering surface provided towards the atomization surface, the covering surface is recessed to form a groove, and the heating element is matched with the groove, or at least a part of the heating element is matched with the groove. In an embodiment, the protective layer is provided with a through groove that passes through the entire protective layer, one end of the through groove passes through a bottom surface of the protective layer, the other end of the through groove passes through the covering surface of the protective layer, the heating element is located in the through groove and is matched with the through groove. In an embodiment, the through groove is arranged obliquely with respect to the atomization surface. In an embodiment, a cross section of the through groove at least comprises a first bending portion and a second bending portion which are in communication with each other, a central axis of the first bending portion is arranged at an angle with the atomization surface, and a central axis of the second bending portion is arranged at an angle with the central axis of the first bending portion. In an embodiment, the substrate is made of a ceramic material or a glass material and a thickness of the substrate ranges from 2 mm to 5 mm. In an embodiment, the protective layer has a membrane-shaped structure, and the protective layer is a porous ceramic layer made of a porous ceramic material. In an embodiment, the protective layer has a porosity, and the porosity ranges from 20% to 70%. In an embodiment, heating element comprises a heating portion and two electrode portions, one of the electrode portions serves as a positive electrode and is electrically connected to one end of the heating portion, and the other electrode portion serves as a negative electrode and is electrically connected to the other end of the heating portion. In an embodiment, the