Electronic Cigarette Liquid Transfer Chamber for Increased Capacity

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Solution Overview

Problem

Existing disposable electronic cigarettes face challenges in configuring a liquid tank due to the small volume of the atomizing core, leading to a limited capacity and service life.

Innovation Solution

The electronic cigarette design includes installation cavities for liquid storage chambers, a liquid passing cavity communicating with the atomizing core, and a joint structure with sealing rings to facilitate assembly and prevent leakage, allowing increased tobacco liquid capacity and extended usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a liquid tank is directly configured to communicate with the atomizing core, then the liquid capacity can be increased, but the small volume of the atomizing core makes direct communication difficult to achieve

Engineering Contradiction:
Improvetobacco liquid capacityVSAvoidliquid tank configuration difficulty
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent introduces a liquid transmission cavity as an intermediary component between the liquid storage chamber and the atomizing core. This cavity acts as a mediator that bridges the gap created by the small atomizing core volume, allowing the liquid storage chamber to communicate with the atomizing core without direct contact. The liquid transmission cavity receives liquid from the storage chamber and transfers it to the atomizing core, solving the configuration difficulty while maintaining increased liquid capacity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Volume of moving object

If the atomizing core volume is kept small for compact design, then the device size is reduced, but the liquid tank configuration becomes difficult

Engineering Contradiction:
Improvedevice sizeVSAvoidliquid tank assembly
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The patent segments the liquid delivery system into distinct functional components: a liquid storage chamber, a liquid transmission cavity, and an atomizing core. This segmentation allows each component to be optimized independently - the atomizing core remains small for compact device size, while the storage chamber can be larger for increased capacity. The segmented design simplifies assembly by allowing each component to be manufactured and tested separately before final integration, improving ease of manufacture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs a nested structure where the atomizing core is positioned within or adjacent to the liquid transmission cavity, which in turn is connected to the liquid storage chamber. This nesting arrangement allows the small atomizing core to be accommodated within the larger liquid storage system without increasing overall device volume, while the hierarchical structure simplifies the assembly process by providing clear spatial relationships and mounting interfaces between components.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Productivity

If a joint structure is added to connect liquid storage chambers with liquid passing chamber, then liquid transfer efficiency is improved, but the device complexity increases

Engineering Contradiction:
Improveliquid transfer efficiencyVSAvoidjoint structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The joint structure connecting the liquid storage chamber and liquid transmission cavity is designed to perform multiple functions simultaneously: it provides mechanical connection, ensures liquid-tight sealing, and maintains proper liquid flow direction. By integrating these multiple functions into a single joint structure, the patent improves liquid transfer efficiency without proportionally increasing device complexity, as the joint serves several purposes at once rather than requiring separate components for each function.

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

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 the electronic cigarette's liquid capacity, increases the number of puffs, and improves the service life by ensuring efficient liquid transfer to the atomizing core, addressing the difficulty in configuring a liquid tank with a small atomizing core volume.

Implementation Method 1

first sealing rings are arranged between the insertion end and the liquid passing chamber

Methodology Applied
Scientific EffectSealing:

Implementation Method 2

the liquid outlet hole is in communication with the liquid passing cavity

Methodology Applied
Scientific EffectGravity flow: Gravitation

Implementation Method 3

a liquid passing cavity is arranged inside the liquid passing chamber, and the liquid passing cavity is in communication with an interior of the atomizing core

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 4

a heating wire provided at a bottom of the liquid absorbing cotton

Methodology Applied
Scientific EffectResistive heating: Joule Heating

Implementation Method 5

liquid absorbing cotton provided within the annular housing body

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentEP4613119A1Electronic cigarette
Publication Date: 2025.09.10 PAX INT LTD
  • EP4613119A1 patent drawingFigure 1
  • EP4613119A1 patent drawingFigure 2
  • EP4613119A1 patent drawingFigure 3

AI summary

An electronic cigarette includes a main body of electronic cigarette, and liquid storage chambers for storing tobacco liquid. The main body of electronic cigarette is equipped with installation cavities. The liquid storage chambers are at least partially placed in the installation cavities. The liquid storage chambers are equipped with a liquid outlet hole for discharging tobacco liquid. The main body of electronic cigarette is equipped with a liquid passing chamber and at least one atomizing core. A liquid passing cavity is provided inside the liquid passing chamber, and the liquid passing cavity is in communication with an interior of the atomizing core. The liquid passing cavity is positioned on an outer side of the atomizing core. After the liquid storage chambers are assembled into the installation cavities, the liquid outlet hole is in communication with the liquid passing cavity.