Atomizer Wick and Tube Structure for Leak-Resistant E-Liquid Flow

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Solution Overview

Problem

Existing electronic atomization devices face challenges in efficiently storing and atomizing e-liquid while maintaining structural integrity and preventing leakage, particularly in detachable pod-replaceable devices.

Innovation Solution

The atomizer design includes a support structure with multiple accommodating cavities and gaps to buffer e-liquid, a tubular element with through holes, and a dual e-liquid guide system, along with an airflow and air exchange channel, to facilitate e-liquid absorption and aerosol generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a tubular element is used to guide e-liquid flow, then e-liquid distribution is improved, but the risk of leakage increases

Engineering Contradiction:
Improvee-liquid distribution efficiencyVSAvoidleakage prevention
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent employs a nested structure where the second e-liquid guide element is positioned inside the tubular element, and the first e-liquid guide element surrounds the tubular element. This nested arrangement allows the e-liquid guide elements to constrain and direct the e-liquid flow through the tubular element, preventing leakage while maintaining efficient distribution. The concentric positioning of multiple guide elements creates a controlled pathway that eliminates gaps and prevents e-liquid from escaping the intended flow path.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Productivity

If multiple e-liquid guide elements are added to improve absorption, then e-liquid absorption efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvee-liquid absorption efficiencyVSAvoidstructure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the e-liquid guide function into multiple segmented elements: a first e-liquid guide element for initial e-liquid absorption from the storage cavity, and a second e-liquid guide element for secondary absorption and directed flow to the heating element. This segmentation allows each element to perform a specific function in the e-liquid transport pathway, improving overall absorption efficiency while maintaining a modular and manageable structure that can be assembled systematically.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tubular element serves multiple functions simultaneously: it acts as a structural support for the second e-liquid guide element, provides a defined pathway for e-liquid flow, and works in conjunction with the first e-liquid guide element to create a multi-stage absorption system. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while improving e-liquid absorption efficiency.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Quantity of substance

If gaps are added to buffer e-liquid, then e-liquid storage capacity is improved, but the risk of leakage increases

Engineering Contradiction:
Improvee-liquid storage capacityVSAvoidleakage prevention
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent introduces gaps at specific localized positions between the e-liquid guide elements and the tubular element, rather than throughout the entire structure. These strategically placed gaps provide localized e-liquid buffering capacity to store excess e-liquid temporarily, while the continuous contact between the guide elements and the tubular element at other positions maintains effective flow control and prevents leakage. This selective application of gaps optimizes both storage capacity and leakage prevention.

Inventive Principle:
Principle #3Local quality

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

This design enhances e-liquid storage and atomization efficiency, prevents leakage, and ensures stable operation in both detachable and integrated electronic atomization devices.

Implementation Method 1

a first e-liquid guide element, arranged perpendicular to a longitudinal direction of the atomizer and in fluid communication with the e-liquid storage cavity to absorb the e-liquid matrix

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a second e-liquid guide element, located in the tubular element and arranged to indirectly absorb, from the first e-liquid guide element, the e-liquid matrix in the e-liquid storage cavity

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 3

a heating element, combined with the second e-liquid guide element and configured to heat at least a portion of the e-liquid matrix held in the second e-liquid guide element to generate an aerosol

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP4728902A1Atomizer and electronic atomization device
Publication Date: 2026.04.22 SHENZHEN FIRST UNION TECH CO LTD
  • EP4728902A1 patent drawingFigure 1~2
  • EP4728902A1 patent drawingFigure 3~4
  • EP4728902A1 patent drawingFigure 5

AI summary

Provided in the present application are an atomizer and an electronic atomization device. The atomizer comprises: an e-liquid storage cavity; a first e-liquid guide element, which is arranged perpendicular to the longitudinal direction of the atomizer and is in fluid communication with the e-liquid storage cavity so as to suction a liquid matrix; a tubular element, which penetrates the first e-liquid guide element; a second e-liquid guide element, which is located in the tubular element and indirectly suctions from the first e-liquid guide element the liquid matrix which is from the e-liquid storage cavity; a heating element, which is combined with the second e-liquid guide element and is used for heating at least part of the liquid matrix held in the second e-liquid guide element so as to generate an aerosol; and a support, which at least partially accommodates and surrounds the first e-liquid guide element, and supports or holds part of the tubular element. In the atomizer, the support accommodates and surrounds the first e-liquid guide element suctioning the liquid matrix from the e-liquid storage cavity and supports or holds the tubular element, so that the second e-liquid guide element in the tubular element indirectly suctions the liquid matrix in the e-liquid storage cavity and then heats and atomizes same to generate an aerosol.