Magnetic E-Cigarette Atomizer Assembly for Leak-Safe Refilling

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Solution Overview

Problem

Conventional electronic cigarettes have a fixed atomizer that is difficult to repair or replace, and there is a risk of e-liquid leakage during e-liquid injection.

Innovation Solution

The electronic cigarette design includes a detachable atomization assembly with a funnel mechanism for easy repair or replacement of the atomizer and a pneumatic switch to prevent e-liquid leakage by controlling air flow, utilizing magnets for assembly connection and a dual air inlet system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the atomizer is fixedly disposed in conventional electronic cigarettes, then the structural stability is improved, but the ease of repair and replacement deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of repair and replacement
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The electronic cigarette is divided into separable modules: the atomization assembly (containing the atomizer) and the power supply assembly (containing the battery). These modules are connected through magnetic attraction between first magnets in the base and second magnets in the housing, allowing easy separation and recombination without tools while maintaining stable operation when assembled.

Inventive Principle:
Principle #1Segmentation

2Ease of repair

If a detachable atomization assembly is used, then the ease of repair and replacement is improved, but the structural stability deteriorates

Engineering Contradiction:
Improveease of repair and replacementVSAvoidstructural stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The traditional mechanical connection (screws, clips, or snap-fits) is replaced with magnetic attraction between first magnets embedded in the base and second magnets in the housing. This provides a tool-free, reversible connection that is easy to assemble and disassemble while maintaining sufficient structural stability during normal use.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If e-liquid is injected directly into the atomizer, then the ease of operation is improved, but the risk of leakage increases

Engineering Contradiction:
Improveease of e-liquid injectionVSAvoide-liquid leakage risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

A funnel is introduced as an intermediary tool between the e-liquid source and the atomizer. The funnel guides the e-liquid flow into the atomizer chamber through its narrow outlet, preventing splashing and overflow. The funnel can be easily inserted and removed, making the refilling process simple while eliminating leakage risks associated with direct injection.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Facilitates easy maintenance of the atomizer and prevents e-liquid leakage, enhancing user convenience and device reliability.

Implementation Method 1

the atomization assembly is connected to the battery assembly through the attraction of the plurality of first magnets and the plurality of second magnets

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

there is a risk of e-liquid leakage during e-liquid injection... a pneumatic switch to prevent e-liquid leakage by controlling air flow

Methodology Applied
Scientific EffectPneumatic control: Pressure Gradient

Data Source

PatentEP3799734B1Electronic cigarette
Publication Date: 2025.12.03 LIU TUANFANG
  • EP3799734B1 patent drawingFigure 1
  • EP3799734B1 patent drawingFigure 2
  • EP3799734B1 patent drawingFigure 3

AI summary

An electronic cigarette including an atomization assembly and a battery assembly. The atomization assembly is disposed on the battery assembly. The atomization assembly includes an e-liquid tank; a seal plug; a seal collar; a base; a plurality of first magnets; a metal casing; an atomizer; a seal cover; an O-ring; a cylinder; a spring; a first seal ring; and a funnel. The battery assembly includes a second seal ring; an air column; an electrode pair; a plurality of second magnets; a seal sleeve; a pneumatic switch; a press plate; a battery; a control panel; a support; a housing; and a button. The seal collar is sheathed on the base; the base includes a hollow rod and the seal plug is disposed on one end of the hollow rod; the e-liquid tank is disposed on the base; the base includes a plurality of bottom recesses.