Modified Liquid Electrical Vaporiser Chimney for Uniform Fragrance

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Solution Overview

Problem

Liquid electrical vaporisers take time to reach steady state emanating conditions and often distribute fragrance unevenly, leading to consumer confusion and wall staining.

Innovation Solution

Incorporating a distal chimney extension angled away from the vertical plane and optionally featuring a convex inner surface, which redirects active-laden air away from the wall and into the room, utilizing the Coanda effect for faster and more uniform distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a standard vertical chimney is used, then the device structure is simple, but the fragrance distribution is uneven and walls are stained

Engineering Contradiction:
Improvechimney structure simplicityVSAvoidwall staining and uneven distribution
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The chimney is designed with an asymmetric structure including a distal extension that protrudes from the side of the housing away from the plug. This asymmetric configuration redirects the fragrance plume away from the wall, preventing staining while maintaining manufacturing simplicity

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The chimney extends not only vertically but also horizontally in the distal direction, adding a third dimensional component to the fragrance discharge path. This multi-dimensional approach directs fragrance into the room space rather than allowing it to contact the wall

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

2Object-affected harmful factors

If the chimney is extended distally, then fragrance distribution uniformity improves, but device complexity increases

Engineering Contradiction:
Improvefragrance distribution uniformityVSAvoidchimney structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The chimney is segmented into distinct functional portions: a vertical portion for structural support and a distal extension portion for fragrance redirection. This segmentation allows each portion to be optimized independently while maintaining overall simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The distal extension serves multiple functions simultaneously: it acts as a structural component of the chimney, a flow director for fragrance, and a spacer to maintain distance from the wall. This multi-functionality reduces the need for additional components

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

3Reliability

If the device operates from cold state, then it can eventually provide steady emanation, but it takes considerable time to reach ideal conditions

Engineering Contradiction:
Improvesteady emanation achievementVSAvoidtime to reach steady state
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The distal extension is pre-configured to optimize fragrance flow dynamics from the moment the device operates. By establishing the correct flow path geometry in advance, the system accelerates the transition to steady-state emanation without requiring additional heating time

Inventive Principle:
Principle #10Preliminary action

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 reduces the time to achieve noticeable active levels in a room and ensures uniform fragrance distribution, avoiding wall staining and enhancing room coverage.

Implementation Method 1

utilizing the Coanda effect for faster and more uniform distribution

Methodology Applied
Scientific EffectCoanda effect: Coanda Effect

Implementation Method 2

a heater, a wick or other liquid transfer mechanism... liquid electrical vaporiser... volatile liquid containing an active

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3672645B1Modified liquid electrical vaporiser
Publication Date: 2025.09.24 RECKITT BENCKISER (BRANDS) LTD
  • EP3672645B1 patent drawingFigure 1~2
  • EP3672645B1 patent drawingFigure 3~4
  • EP3672645B1 patent drawingFigure 5

AI summary

A modified liquid electrical vaporiser is disclosed with a modified chimney that provides enhanced distribution of actives.