Atomizer Liquid Conductor Prevents Tobacco Liquid Spillage

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Solution Overview

Problem

Existing atomizers in electronic cigarettes suffer from tobacco liquid spillage due to the liquid conductor becoming saturated and expelling liquid under gravity, leading to a cumbersome and messy user experience.

Innovation Solution

The atomizer design includes a liquid conductor with a main portion surrounding the heater and an extending portion that absorbs tobacco liquid from the reservoir, positioned below the gas pathway, preventing saturation and allowing liquid to settle back into the reservoir, thus avoiding leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the liquid conductor transfers tobacco liquid from the lateral surface to the heater, then the tobacco liquid can be delivered to the heater for heating, but the liquid conductor becomes saturated and expels tobacco liquid under gravity causing spillage

Engineering Contradiction:
Improvetobacco liquid transferVSAvoidliquid saturation and spillage
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent inverts the conventional liquid transfer direction by positioning the liquid conductor below the heater and having it extend upward to absorb liquid from the reservoir. This inversion prevents gravity-induced saturation and spillage while maintaining effective liquid delivery to the heater through capillary action and gravitational assistance.

Inventive Principle:
Principle #13The other way round (Inversion)

2Device complexity

If the liquid conductor is disposed inside the gas-outlet pathway, then the structure is compact, but tobacco liquid is expelled inadvertently from the liquid conductor under gravity force causing spillage

Engineering Contradiction:
Improvestructural arrangementVSAvoidtobacco liquid spillage
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the liquid conductor from the gas-outlet pathway and relocates it to a position below the heater. This separation eliminates the harmful interaction between expelled liquid and the gas pathway, preventing spillage while maintaining the compact structure through optimized spatial arrangement.

Inventive Principle:
Principle #2Taking out (Extraction)

3Device complexity

If the reservoir surrounds the liquid conductor and heater, then the structure is integrated, but when the tobacco liquid level is higher than the liquid conductor, the liquid conductor gets saturated causing spillage

Engineering Contradiction:
Improveintegrated structureVSAvoidliquid saturation control
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies local quality by positioning the liquid conductor at a specific location below the heater with controlled extension into the reservoir. This localized arrangement ensures that the liquid conductor absorbs liquid from a controlled region, preventing saturation while maintaining the integrated reservoir structure.

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 effectively prevents tobacco liquid from entering the gas pathway, ensuring smooth operation and improving user experience by minimizing spillage and enhancing the reliability of the electronic cigarette.

Implementation Method 1

a liquid conductor, extending towards the proximal end of the atomizing body to contact the heater in the gas pathway and extending towards the distal end of the atomizing body to absorb tobacco liquid from the reservoir

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a heater, configured for heating the tobacco liquid to generate an aerosol

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 3

heating the tobacco liquid to generate an aerosol

Methodology Applied
Scientific EffectPhase change: Phase Change

Data Source

PatentEP4691298A2Atomizer and electronic cigarette having same
Publication Date: 2026.02.11 SHENZHEN FIRST UNION TECH CO LTD
  • EP4691298A2 patent drawingFigure 1
  • EP4691298A2 patent drawingFigure 2
  • EP4691298A2 patent drawingFigure 3

AI summary

An atomizer and an electronic cigarette having the same are provided, the atomizer includes an atomizing body having a proximal end, a distal end opposite to the proximal end, a longitudinal axis between the proximal end and the distal end, and a transverse axis that is perpendicular to the longitudinal axis; an aerosol outlet adjacent to the proximal end of the atomizing body; an air inlet is bored at a lateral surface of the atomizing body; a gas pathway within the atomizing body and adjacent to the proximal end of the atomizing body; the gas pathway intercommunicating with the air inlet and the aerosol outlet; a reservoir within the atomizing body and adjacent to the distal end of the atomizing body, the reservoir configured to store tobacco liquid; a heater, configured for heating the tobacco liquid to generate an aerosol; the heater being disposed inside the gas pathway; a liquid conductor, extending towards the proximal end of the atomizing body to contact the heater in the gas pathway and extending towards the distal end of the atomizing body to absorb tobacco liquid from the reservoir, such that the liquid conductor is capable of supplying tobacco liquid to the heater.