Atomizer Liquid-Absorbing Assembly for Leakage Prevention

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Solution Overview

Problem

Aerosol-forming substrates in atomizers and aerosol generating devices are prone to leakage from the connection between the liquid storage assembly and atomizing assembly, or leak to the outside due to gravity, causing user inconvenience.

Innovation Solution

The atomizing assembly is designed with an air inlet passage communicating with the atomizing chamber, and a liquid absorbing member is placed between the liquid storage and atomizing chambers to prevent direct communication, with the air outlet end positioned closer to the smoke outlet, ensuring that unatomized aerosol-forming substrate and condensate do not leak externally.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the liquid storage chamber and atomizing chamber are directly connected, then the aerosol-forming substrate can flow freely for atomization, but the substrate leaks from the connection and to the outside due to gravity

Engineering Contradiction:
Improveatomization efficiencyVSAvoidleakage prevention
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

A liquid absorbing member is introduced as an intermediary component between the liquid storage chamber and atomizing chamber. This member absorbs and retains the aerosol-forming substrate, preventing direct gravitational flow while enabling controlled atomization when heated, thus resolving the contradiction between free flow for atomization and leakage prevention.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The state of the aerosol-forming substrate is changed from liquid (prone to leakage) to solidified form through cooling. The liquid absorbing member causes the substrate to solidify, which prevents gravitational leakage while still allowing vaporization and atomization when heated during use.

Inventive Principle:
Principle #35Parameter changes

2Volume of stationary object

If the air outlet end is positioned far from the smoke outlet, then there is more space for unatomized substrate, but the unatomized substrate and condensate leak to the outside

Engineering Contradiction:
Improvespace for unatomized substrateVSAvoidcontainment of unatomized substrate
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The liquid absorbing member acts as an intermediary that contains and absorbs unatomized substrate and condensate. By positioning the air outlet end closer to the smoke outlet, the design relies on the liquid absorbing member's absorption capability rather than spatial distance to prevent leakage, thus resolving the contradiction between space availability and containment.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Volume of stationary object

If the liquid absorbing member is positioned far from the smoke outlet, then there is more space, but the leaked substrate can escape to the outside

Engineering Contradiction:
Improvespace in atomizing chamberVSAvoidleakage to outside
Core Design Contradiction:
Volume of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The liquid absorbing member serves as a protective intermediary that intercepts and absorbs any substrate that might otherwise leak to the outside. Its positioning and absorption properties ensure that even with reduced space, leaked substrate is contained and absorbed rather than escaping, resolving the contradiction between space and leakage prevention.

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

Prevents leakage of aerosol-forming substrate and condensate to the outside of the device, maintaining device integrity and user convenience by effectively containing unatomized substrate and condensate within the device.

Implementation Method 1

The liquid absorbing member is arranged between the liquid storage chamber and the atomizing chamber, and separates direct communication between the liquid storage chamber and the atomizing chamber

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

the aerosol-forming substrate which is not atomized by the heating member

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 3

the condensate generated by cooling of the smoke

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentEP4118983B1Atomizer and aerosol generating device thereof
Publication Date: 2025.09.24 CHANGZHOU PATENT ELECTRONICS TECH CO LTD
  • EP4118983B1 patent drawingFigure 1
  • EP4118983B1 patent drawingFigure 2
  • EP4118983B1 patent drawingFigure 3

AI summary

An atomizer (100) and an aerosol generating device with the atomizer (100) are provided. The atomizer (100) includes a liquid storage assembly (10) and an atomizing assembly (20). A liquid storage chamber (15) is provided in the liquid storage assembly (10), a smoke outlet (11) is provided in the liquid storage assembly (10), the atomizing assembly (20) is arranged at one end of the liquid storage assembly (10) opposite to the smoke outlet (11), the atomizing assembly (20) includes a liquid absorbing member (231), the liquid absorbing member (231) is arranged between the liquid storage chamber (15) and an atomizing chamber (221) to separate direct communication between the liquid storage chamber (15) and the atomizing chamber (221), and compared to the liquid absorbing member (231), the air outlet end of an air inlet passage (211) is located closer to the smoke outlet (11). The air inlet passage in communication with the atomizing chamber (221) is provided in the atomizing assembly (20), the liquid absorbing member (231) is arranged between the liquid storage chamber (15) and the atomizing chamber (221) to separate direct communication between the liquid storage chamber (15) and the atomizing chamber (221), and meanwhile, the air outlet end of the air inlet passage (211) is located closer to the smoke outlet (11) compared to the liquid absorbing member (231); thus, an aerosol-forming substrate which is not atomized by a heating member (232) in time on the liquid absorbing member (231), the condensate generated when smoke is cooled or the leaked aerosol-forming substrate are not prone to be leaked to the outside of the aerosol generating device.