Steam Generator Vortex Injection for Wrinkle-Free Laundry Drying

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Solution Overview

Problem

Conventional laundry dryers fail to remove wrinkles and creases from dried clothes, requiring users to iron them, and existing technologies do not effectively address the generation and removal of creases during drying and daily wear.

Innovation Solution

A laundry dryer equipped with a steam generator that supplies steam into the drum through strategically positioned front and rear ends, using a divergent-convergent duct-shaped steam injection part to form a vortex flow and discharge condensed water, preventing creases and wrinkles without direct contact with the clothes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional laundry dryers are used to dry clothes, then the drying function is achieved, but creases and wrinkles are generated and not removed

Engineering Contradiction:
Improvecrease removal capabilityVSAvoidironing requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The steam generator performs preliminary steaming action on the laundry before the drying process completes, allowing creases to be removed during the drying cycle itself rather than requiring separate ironing afterward. The steam is supplied to the laundry at specific stages to relax wrinkles before the final drying phase.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Steam is introduced as an intermediary substance between the heating element and the laundry, serving as a medium that penetrates the fabric to relax creases through moisture and heat, enabling crease removal without direct mechanical pressure from an iron.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If steam is supplied into the drum to remove creases, then crease removal performance is improved, but condensed water may directly contact the laundry causing potential damage

Engineering Contradiction:
Improvecrease removal performanceVSAvoidcondensed water contact
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The steam supply part is positioned at specific locations (front and rear ends of the drum) rather than uniformly distributed, creating localized steam zones that target creased areas while controlling condensation patterns to prevent direct water contact with the laundry.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The divergent-convergent duct-shaped steam injection part acts as an intermediary structure that controls steam flow and condensation, directing steam in a vortex pattern that reduces direct condensation on laundry while maintaining effective crease removal through controlled steam exposure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If steam is supplied continuously to remove creases, then crease removal effectiveness is improved, but energy consumption increases

Engineering Contradiction:
Improvecrease removal effectivenessVSAvoidsteam generation energy
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The steam generator operates periodically rather than continuously, supplying steam at specific intervals and stages during the drying cycle. Steam is supplied during phases when laundry is most susceptible to crease removal, then paused to allow drying to occur, reducing overall energy consumption while maintaining effectiveness.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

Steam is supplied in advance during early drying stages when laundry is still damp and more responsive to steaming, achieving crease removal before the drying process completes, which reduces the need for prolonged steam generation and lowers energy consumption.

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

Effectively prevents and removes creases and wrinkles from dried clothes without ironing, enhancing drying and crease removal performance by using steam injection to manage moisture and airflow within the dryer.

Implementation Method 1

a steam generating part for making steam

Methodology Applied
Scientific EffectPhase change (water to steam): Phase Change

Implementation Method 2

a steam generating part for making steam

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 3

the steam injection part being formed in a divergent-convergent duct shape

Methodology Applied
Scientific EffectVortex flow: Vortex Ring

Data Source

PatentEP1951948B1Steam generator and laundry dryer having the same and controlling method thereof
Publication Date: 2017.08.02 LG ELECTRONICS INC
  • EP1951948B1 patent drawingFigure 1
  • EP1951948B1 patent drawingFigure 2~3
  • EP1951948B1 patent drawingFigure 4~6

AI summary

A water supply device for a drying machine and a method for controlling the same are disclosed. The water supply device includes a common hose (310) having one end connected to at least one water supply source (300), a drying machine water supply hose (300) having one end connected to the common hose (310) and the other end connected to a steam generator (1 ) of the drying machine, and a washing machine water supply hose (330) having one end connected to the common hose (310) and the other end connected to a washing machine (2). With the provision of the water supply device, the drying machine has the effects of preventing wrinkles, creases, or the like from being generated in an object to be dried, such as clothes, and the like, or eleminating wrinkles, creases, or the like in clothes, and the like.