Additive Reservoir for Electronic Smoking Devices Without Atomizer Contact

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Solution Overview

Problem

Existing electronic smoking devices lack an efficient mechanism to introduce additives, such as flavors and nicotine, without subjecting them to atomization, which can alter their taste and require complex assembly processes.

Innovation Solution

An additive reservoir is integrated into the electronic smoking device, allowing additives to mix with vaporized liquid before inhalation without using the atomizer, featuring a wick for capillary action and a through hole with a constricting section to minimize turbulence and condensation, with a protrusion for easy insertion and a design that avoids direct contact with the atomizer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If additives are introduced through the atomizer, then they can be delivered to the user, but their taste is altered due to atomization and the assembly process becomes complex

Engineering Contradiction:
Improveassembly processVSAvoidtaste alteration
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The device is divided into separate functional sections: an atomizer section for vaporizing base liquid and an additive reservoir section for holding additives. This segmentation allows each component to perform its dedicated function without interference, preventing taste alteration while simplifying assembly as components can be independently manufactured and then combined.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A through-hole communication path is provided as an intermediary channel between the additive reservoir and the atomizer. This intermediary allows additives to be delivered to the user without direct contact with the atomizer heating element, preventing thermal degradation and taste alteration while maintaining a simple assembly structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If additives are placed close to the atomizer, then delivery efficiency is improved, but turbulence and condensation increase

Engineering Contradiction:
Improvedelivery efficiencyVSAvoidturbulence and condensation
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The through-hole is designed with a constricting section that changes the dimensional characteristics of the flow path. By creating a controlled constriction, the flow dynamics are optimized to reduce turbulence while maintaining efficient additive delivery, resolving the contradiction between delivery efficiency and flow stability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Manufacturing precision

If a complex assembly mechanism is used to integrate the additive reservoir, then precise positioning is achieved, but the device complexity increases

Engineering Contradiction:
Improvepositioning precisionVSAvoidassembly mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The additive reservoir is designed with self-aligning features including a protrusion that fits into a receiving section and sealing surfaces that automatically position components correctly during assembly. This self-service mechanism achieves precise positioning without requiring complex external assembly tools or procedures, reducing device complexity while maintaining manufacturing precision.

Inventive Principle:
Principle #25Self-service

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 enables the addition of additives like flavors and nicotine without altering their taste, simplifies assembly, and reduces turbulence and condensation, providing a seamless user experience.

Implementation Method 1

The wick is arranged to deliver additive from the additive storage volume to the through hole

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Data Source

PatentEP4248777B1Electronic smoking device
Publication Date: 2025.09.24 FONTEM VENTURES
  • EP4248777B1 patent drawingFigure 1
  • EP4248777B1 patent drawingFigure 2~3
  • EP4248777B1 patent drawingFigure 4

AI summary

The invention relates to electronic smoking devices (10) with an atomizer/liquid reservoir portion (14). In order to provide that additives can be used without bringing the additives in contact with an atomizer (26) of the atomizer/liquid reservoir portion (14), the invention provides an additive reservoir (40) for the electronic smoking device (10), which comprises an additive storage volume (42), a through hole (44) and an additive outlet opening (46) that opens the additive storage volume (42) to the through hole (44). Furthermore, the invention provides that the atomizer/liquid reservoir portion (14) comprises a receiving section (36) for the additive reservoir (40).