Dual-Material Liquid Candle Tube for Heat Dissipation and Fragrance Diffusion

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Solution Overview

Problem

Existing liquid candles suffer from single functionality, poor wick oil absorption, short service life, and unsatisfactory wick performance.

Innovation Solution

A liquid candle design featuring a dual-material lamp tube with differential heat dissipation, a wick structure with wound and unwound cords, and a container system for fragrance diffusion and visibility, along with a combined device for enhanced functionality and longevity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If a single-material lamp tube is used, then the manufacturing process is simple, but the service life is short due to poor heat dissipation and aging

Engineering Contradiction:
Improveservice life of lamp tubeVSAvoidstructure of lamp tube
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The lamp tube is divided into an upper lamp tube and a lower lamp tube made of different materials. The upper lamp tube has fast heat dissipation for high-temperature resistance, while the lower lamp tube provides structural support and fragrance storage, extending the overall service life through functional segmentation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lamp tube uses composite material construction with at least two different materials having different heat dissipation speeds. This composite structure optimizes both heat management and durability, resolving the contradiction between simple manufacturing and extended service life

Inventive Principle:
Principle #40Composite materials

2Duration of action of stationary object

If the upper lamp tube uses fast heat dissipation material, then the service life is prolonged, but the manufacturing requirements and production costs increase

Engineering Contradiction:
Improveservice life of lamp tubeVSAvoidmanufacturing process
Core Design Contradiction:
Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

By segmenting the lamp tube into upper and lower sections with different material requirements, the patent applies high-performance heat dissipation materials only where needed (upper section), reducing overall material costs and manufacturing complexity while extending service life

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the lamp tube are assigned different material properties: the upper lamp tube uses fast heat dissipation material for thermal management, while the lower lamp tube uses different material for structural support, optimizing both performance and manufacturability

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If a simple wick structure is used, then the manufacturing is easy, but the absorption effect of the wick on lamp oil is poor

Engineering Contradiction:
Improvemanufacturing of wickVSAvoidabsorption effect of wick
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The wick is constructed from porous material that provides high surface area and capillary action for effective lamp oil absorption, while maintaining a relatively simple overall structure that is easy to manufacture and install

Inventive Principle:
Principle #31Porous materials

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 design enhances oil absorption, extends candle life, allows for fragrance diffusion, and provides a multi-functional aromatherapy experience while maintaining ease of use and aesthetic appeal.

Implementation Method 1

A wick of the liquid candle absorbs the lamp oil from a bottom end to a top end of the wick

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

the upper lamp tube and the lower lamp tube are made of different materials, and a heat dissipation speed of the upper lamp tube is greater than that of the lower lamp tube

Methodology Applied
Scientific EffectHeat dissipation: Conduction (thermal)

Implementation Method 3

the liquid candle can serve as an aromatherapy volatile stick

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 4

allows for fragrance diffusion

Methodology Applied
Scientific EffectDiffusion: Diffusion

Data Source

PatentEP4678979A1A liquid candle and a liquid candle combined device
Publication Date: 2026.01.14 NINGBO KWUNGS WISDOM ART & DESIGN
  • EP4678979A1 patent drawingFigure 1
  • EP4678979A1 patent drawingFigure 2
  • EP4678979A1 patent drawingFigure 3

AI summary

The present invention relates to a liquid candle and a liquid candle combined device. The liquid candle comprises a lamp tube having a mounting chamber running through the lamp tube vertically; and a wick vertically disposed inside the mounting chamber of the lamp tube. The lamp tube has at least two through holes distributed at intervals on a peripheral wall of the lamp tube and radially running through the peripheral wall of the lamp tube. Due to the arrangement of the through holes, when the liquid candle does not burn, the liquid candle can serve as the aromatherapy volatile stick to spread fragrance through the through holes and the top tube opening of the lamp tube. When the liquid candle is burning, heat is dissipated through the through holes, so that the service life of the lamp tube can be prolonged.