Vaporizer Coil with Variable Winding Intervals

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

General aerosol generating apparatuses often carbonize the wick due to excessive heating, which affects the production and quality of aerosol.

Innovation Solution

The aerosol generating apparatus includes a wick with varying absorption rates for the aerosol generating material along its length, and a coil heating element with different winding intervals to optimize heating intensity, preventing wick carbonization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the wick is heated uniformly along its entire length, then the aerosol generating material at the end portions (with high absorption rates) can be effectively vaporized, but the center portion (with low absorption rates) becomes excessively heated and carbonized

Engineering Contradiction:
Improveaerosol generation efficiencyVSAvoidwick carbonization
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The heating element is designed with non-uniform heating characteristics: it applies strong heating to the end portions of the wick where absorption rates are high, and weak heating to the center portion where absorption rates are low. This local differentiation of heating intensity matches the spatial variation in absorption rates, preventing carbonization while maintaining aerosol generation efficiency

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The heating parameters (temperature distribution along the wick length) are changed to correspond with the absorption rate profile. By adjusting the heating intensity at different positions along the wick, the system optimizes both aerosol production and prevents harmful carbonization

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the heating intensity is increased to enhance aerosol production, then more aerosol generating material is vaporized, but the wick carbonizes due to excessive heating

Engineering Contradiction:
Improveaerosol production amountVSAvoidwick durability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The heating element provides differentiated heating intensity at different wick positions: high heating intensity at end portions where material is readily available for vaporization, and low heating intensity at the center portion where material supply is limited. This prevents carbonization and maintains wick durability while ensuring sufficient aerosol production

Inventive Principle:
Principle #3Local quality

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 solution optimizes aerosol production by regulating heating intensity based on the absorption rate profile of the wick, preventing wick carbonization and ensuring consistent aerosol generation.

Implementation Method 1

a wick extending in one direction and absorbing the aerosol generating material through both end portions

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a coil surrounding the wick a plurality of times at different winding intervals and heating the aerosol generating material absorbed by the wick

Methodology Applied
Scientific EffectResistive heating: Joule Heating

Data Source

PatentEP3817586B1Vaporizer and aerosol generating apparatus including the same
Publication Date: 2025.04.09 KT&G CO LTD
  • EP3817586B1 patent drawingFigure 1
  • EP3817586B1 patent drawingFigure 2
  • EP3817586B1 patent drawingFigure 3(a)~5

AI summary

A vaporizer includes a storage storing a liquid aerosol generating material, a wick extending in one direction and absorbing the aerosol generating material through both end portions thereof that are connected to the storage, and a coil surrounding the wick a plurality of times at different winding intervals and heating the aerosol generating material absorbed by the wick, based on an absorption rate profile of the aerosol generating material which changes in the wick along the one direction.