Electronic Cigarette Atomizer with Memory Foam and U-Shaped Air Passage

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Solution Overview

Problem

Conventional electronic cigarettes lack a mechanism to prevent e-liquid condensate from depositing and leaking out of the atomizer, as they do not incorporate memory foam around the heating wire, leading to inefficiencies and potential e-liquid loss.

Innovation Solution

The electronic cigarette design includes an atomization assembly with a memory foam wrapped around the heating wire, a U-shaped air passage to prevent e-liquid leakage, and a pneumatic switch driven by airflow, which absorbs and reuses condensate e-liquid, and integrates a gasket seal to secure the components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If memory foam is added around the heating wire, then e-liquid leakage is prevented and condensate is absorbed, but device complexity increases

Engineering Contradiction:
Improveprevention of e-liquid leakageVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Memory foam is introduced as an intermediary material between the heating wire and the atomizer housing. It serves multiple functions: absorbing excess e-liquid, preventing leakage, and maintaining structural integrity, thereby resolving the contradiction between reliability improvement and complexity increase

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The memory foam utilizes its porous structure to absorb and retain condensate e-liquid through capillary action, preventing it from leaking out of the atomizer while maintaining a compact design

Inventive Principle:
Principle #31Porous materials

2Reliability

If a U-shaped air passage is implemented, then e-liquid leakage is prevented, but manufacturing complexity increases

Engineering Contradiction:
Improveprevention of e-liquid leakageVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The air passage is segmented into distinct sections (vertical air passage, bottom air passage, curve air passage) that can be manufactured separately and then assembled, reducing the difficulty of creating the complete U-shaped structure in a single manufacturing process

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air passages are nested within the existing structural components of the atomizer, utilizing available space and integrating the airflow channels into the overall device architecture rather than adding separate external structures

Inventive Principle:
Principle #7Nested doll (Nesting)

3Loss of substance

If memory foam is used to absorb condensate, then e-liquid loss is reduced, but device weight increases

Engineering Contradiction:
Improvee-liquid lossVSAvoiddevice weight
Core Design Contradiction:
Loss of substanceVSWeight of moving object

Solution Approach 1:

The memory foam's porous structure provides high absorption capacity relative to its volume and weight, allowing it to capture and retain condensate e-liquid effectively while minimizing the added mass to the device

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The memory foam recovers condensate e-liquid that would otherwise be lost, capturing it in its porous structure and making it available for reuse in the atomization process, thereby reducing e-liquid loss

Inventive Principle:
Principle #34Discarding and recovering

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 e-liquid leakage, reuses absorbed condensate for the heating wire, and ensures efficient airflow operation, enhancing the performance and reliability of the electronic cigarette by utilizing the memory foam and U-shaped air passage.

Implementation Method 1

The memory foam is wrapped around the heating wire and disposed in the fixed seat... The memory foam of the atomization assembly can absorb the condensate at the upper end and the e-liquid deposited on the lower end of the atomization assembly

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

The heating wire is horizontally disposed in the memory foam... Electronic cigarettes atomize nicotine-containing e-liquid

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 3

the silicone pad comprises a curve air passage connected to the pneumatic switch; when in use, the air flows through the curve air passage to drive the pneumatic switch to work

Methodology Applied
Scientific EffectPneumatic pressure: Pressure Gradient

Data Source

PatentEP3909444B1Electronic cigarette
Publication Date: 2024.10.09 LIU TUANFANG
  • EP3909444B1 patent drawingFigure 1A~1B
  • EP3909444B1 patent drawingFigure 2
  • EP3909444B1 patent drawingFigure 3

AI summary

An electronic cigarette including an atomization assembly and a battery assembly. The atomization assembly includes an e-liquid storage tank and a limit cover disposed in the e-liquid storage tank, and the limit cover includes an air intake and an air passage. The e-liquid storage tank includes a side wall, a vertical air passage disposed along the side wall, and a bottom air passage communicating with the vertical air passage and the air intake of the limit cover. The side wall includes an air inlet communicating with the vertical air passage. When in use, air enters the atomization assembly via the air inlet, sinks along the vertical air passage and enters the bottom air passage of the atomization assembly, passes through the air intake of the limit cover, flows upwards in the air passage of the limit cover, and discharges from the top part of the atomization assembly.