Atomization Core Sealing Structure for E-Liquid Leak Prevention

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Solution Overview

Problem

Existing electronic vaporization devices suffer from liquid leakage due to the exposure of the vaporization core assembly's liquid guide element, such as a porous ceramic body, which is prone to water absorption and leakage.

Innovation Solution

A vaporization core assembly with a liquid guide element enclosed by a first sealing member, featuring a liquid inlet and a sealing member side wall that covers all surfaces except the vaporization surface, preventing liquid leakage by ensuring the liquid absorbing surface communicates only through the designated inlet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional atomization core assembly is used, then the structure is simple, but the sealing performance is poor leading to liquid leakage

Engineering Contradiction:
Improvesealing performanceVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The atomization core assembly is divided into multiple functional components: a capillary array plate with capillary channels, a porous plate with porous channels, and sealing rings. This segmentation allows each component to perform its specific function (liquid transport, distribution, and sealing) effectively, resolving the contradiction between simple structure and good sealing performance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Sealing rings are introduced as intermediary components between the capillary array plate and the porous plate, and between the porous plate and the atomization core body. These sealing rings act as mediators that fill gaps and prevent liquid leakage without requiring complex integrated sealing structures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If the atomization core assembly is simplified, then the manufacturing is easier, but the liquid distribution uniformity deteriorates

Engineering Contradiction:
Improveliquid distribution uniformityVSAvoidmanufacturing complexity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The liquid distribution function is segmented across different components: the capillary array plate provides uniform liquid distribution through multiple capillary channels, while the porous plate further distributes liquid through its porous structure. This segmentation achieves uniform liquid distribution without requiring complex integrated manufacturing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A porous plate with porous channels is introduced as an intermediate component between the capillary array and the atomization core body. The porous structure naturally distributes liquid uniformly through capillary action and pressure gradients, achieving good liquid distribution uniformity while maintaining relatively simple manufacturing processes for each component.

Inventive Principle:
Principle #31Porous materials

3Object-affected harmful factors

If conventional sealing methods are used, then the structure remains simple, but liquid leakage occurs affecting product quality

Engineering Contradiction:
Improveliquid leakageVSAvoidsealing structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

Sealing rings are introduced as intermediary components that fit into grooves on the capillary array plate and porous plate. These sealing rings act as dedicated sealing mediators that prevent liquid leakage at critical interfaces without requiring complex integrated sealing structures or modifications to the main body components.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The sealing rings provide homogeneous sealing contact across the interface surfaces, ensuring consistent sealing performance around the entire perimeter of the liquid flow paths. This homogeneous sealing approach effectively prevents liquid leakage while maintaining relatively simple overall structure.

Inventive Principle:
Principle #33Homogeneity

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively prevents liquid leakage, enhancing the anti-leakage performance of the vaporization core assembly and the associated vaporizer and electronic vaporization device.

Implementation Method 1

所述毛细阵列包括多个毛细通道,所述毛细通道沿液体流动方向依次排列;所述多孔板包括多个多孔通道

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

所述多孔板包括多个多孔通道,所述多孔通道沿液体流动方向依次排列

Methodology Applied
Scientific EffectPorous flow: Porosity

Data Source

PatentEP4285752B1Atomization core assembly, atomizer, and electronic atomization device
Publication Date: 2026.05.20 SHENZHEN FIRST UNION TECH CO LTD
  • EP4285752B1 patent drawingFigure 1~2
  • EP4285752B1 patent drawingFigure 3~4
  • EP4285752B1 patent drawingFigure 5

AI summary

This application relates to the technical field of electronic vaporization devices, and discloses a vaporization core assembly, a vaporizer and an electronic vaporization device. The vaporization core assembly includes: a liquid guide element, including a vaporization surface and a liquid absorbing surface facing away from the vaporization surface; a heating element, arranged on the vaporization surface and configured to heat at least a part of the liquid substrate absorbed by the liquid guide element to generate an aerosol; and a first sealing member, provided with a first open end, a first closed end opposite to the first open end, and a sealing member side wall extending from the first closed end to the first open end. The first sealing member accommodates the liquid guide element, and the vaporization surface is exposed; and the first sealing member is further provided with a liquid inlet on the sealing member side wall, so that the liquid absorbing surface is in communication with the outside through the liquid inlet. Through the above manner, the other surfaces of the liquid guide element, except for the vaporization surface, may be enveloped by the first sealing member in the vaporization core assembly to prevent the liquid absorbed by the liquid guide element from leaking from these surfaces, so that the anti-leakage effect is better.