Modular Liquid-Tank Electronic Cigarette for Extended Puffs

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Solution Overview

Problem

Disposable electronic cigarettes have a fixed capacity and battery life, leading to insufficient puffs due to the inability to expand the tobacco liquid, which affects their service life and fails to meet user needs.

Innovation Solution

The electronic cigarette design includes a main body with an installation chamber for multiple non-detachable or detachable liquid storage tanks, each with a liquid outlet hole, and a sealing mechanism to increase tobacco liquid capacity and ensure stability during use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the tobacco liquid capacity is increased by adding multiple liquid storage tanks, then the total number of puffs and service life are improved, but the device complexity and structural complexity increase

Engineering Contradiction:
Improvetobacco liquid capacityVSAvoiddevice complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The liquid storage system is divided into multiple independent liquid storage tanks (first liquid storage tank, second liquid storage tank, etc.) that can be separately installed in the installation chamber. Each tank has its own liquid outlet hole that communicates with the liquid storage chamber, allowing the total liquid capacity to be expanded through modular addition rather than requiring a single large complex reservoir.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The installation chamber is designed as a universal mounting space that can accommodate one or multiple liquid storage tanks. The chamber includes an insertion hole with sealing structure that can receive different numbers and types of liquid storage tanks, providing flexibility in configuration while maintaining a unified structural framework that reduces overall device complexity.

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

2Quantity of substance

If multiple liquid storage tanks are installed in the installation chamber, then the tobacco liquid storage capacity is enhanced, but the manufacturing complexity and assembly difficulty increase

Engineering Contradiction:
Improvetobacco liquid storage capacityVSAvoidease of manufacture
Core Design Contradiction:
Quantity of substanceVSEase of manufacture

Solution Approach 1:

The liquid storage function is segmented into multiple independent tanks that can be manufactured separately using standardized processes. Each tank is a discrete component with a consistent structure (body, outlet hole, insertion end), allowing for simplified manufacturing and quality control compared to a single complex multi-chamber reservoir.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple liquid storage tanks are nested within the installation chamber of the main body, with each tank's insertion end fitting into the insertion hole. This nested arrangement allows compact integration of multiple storage units without requiring proportionally increased overall device volume, and the standardized insertion interface simplifies assembly procedures.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Adaptability or versatility

If the liquid storage tanks are made detachable for user customization, then the adaptability and user flexibility are improved, but the reliability and sealing performance may deteriorate

Engineering Contradiction:
Improveuser customization flexibilityVSAvoidsealing performance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The liquid storage tanks are designed with detachable insertion ends that can be dynamically installed or removed from the installation chamber's insertion hole. This dynamic configuration allows users to customize the number of tanks according to their needs while maintaining a standardized mechanical interface that ensures reliable reconnection and sealing each time a tank is attached.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

A sealing ring is introduced as an intermediary component between the liquid storage tank's insertion end and the insertion hole. This sealing element mediates the connection, ensuring liquid-tight sealing while allowing for easy attachment and detachment. The sealing ring compensates for minor dimensional variations and maintains reliable sealing performance across multiple assembly cycles.

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

This design enhances the tobacco liquid storage capacity, increasing the number of puffs and improving the service life of the electronic cigarette by allowing users to customize the number of liquid storage tanks according to their needs.

Implementation Method 1

liquid absorbing cotton is arranged inside the liquid storage chamber for adsorbing tobacco liquid

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

The heating wire is electrically connected to the circuit board. The liquid absorbing cotton is in an annular shape. The heating wire is positioned on a central axis of the liquid absorbing cotton

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentEP4613125A1Electronic cigarette
Publication Date: 2025.09.10 PAX INT LTD
  • EP4613125A1 patent drawingFigure 1
  • EP4613125A1 patent drawingFigure 2
  • EP4613125A1 patent drawingFigure 3

AI summary

An electronic cigarette includes a main body of electronic cigarette (10), and a plurality of liquid storage tanks (2) for storing tobacco liquid. The main body of electronic cigarette is provided with a liquid storage chamber (133) for storing tobacco liquid and at least one installation chamber (123) for installing the liquid storage tanks. One side of the installation chamber is a first opening (124). Each liquid storage tank is installed corresponding to one installation chamber, or the installation chamber is used for accommodating at least two liquid storage tanks. Each liquid storage tank is equipped with a liquid outlet hole (22) for liquid discharge. The liquid storage tanks are at least partially installed in the installation chamber, and the liquid outlet hole is in communication with the liquid storage chamber, thereby increasing a capacity of the electronic cigarette to store tobacco, increasing puffs for users, and improving a service life of the electronic cigarette.