Washing Machine Steam Refresh Cycle for Wrinkle and Odor Removal

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Solution Overview

Problem

Conventional washing machines do not effectively remove wrinkles or odors from laundry, requiring users to manually iron clothes and wasting resources through frequent washing and drying.

Innovation Solution

A method for operating a washing machine that involves supplying high-temperature steam to a drum with laundry, followed by controlled air supply to remove wrinkles and odors, with drum rotation during both processes to ensure uniform treatment and efficient moisture removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional washing machines dry laundry using high temperature air, then the laundry is dried, but wrinkles are not removed and the laundry cannot be worn directly

Engineering Contradiction:
Improveconvenience of wearing laundryVSAvoidsmoothness of laundry
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by controlling temperature, humidity, and time parameters during the drying process. The washing machine performs a drying cycle followed by a refreshing cycle where steam is injected to raise temperature and humidity to specific ranges (temperature 20-40°C, humidity 30-70%), allowing wrinkles to be removed and laundry to be wearable without ironing.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses periodic action by implementing multiple drying cycles alternating with refreshing cycles. The drum rotates periodically to tumble the laundry, and the process repeats drying and refreshing phases to progressively remove wrinkles and odors, enabling the laundry to be worn directly after the complete cycle.

Inventive Principle:
Principle #19Periodic action

2Object-affected harmful factors

If laundry is washed frequently using water and detergent to remove odors, then deodorization is achieved, but water and energy are wasted and laundry damage increases

Engineering Contradiction:
Improveodors of laundryVSAvoidenergy consumption
Core Design Contradiction:
Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The patent extracts and removes odors from laundry through the refreshing cycle without requiring water and detergent. The system uses steam injection followed by hot air circulation and condensation to eliminate odors, thereby avoiding the energy and water consumption associated with traditional washing cycles.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces steam as an intermediary substance to remove odors. Steam is injected into the drum during the refreshing cycle, penetrates the laundry to neutralize odors, and then condenses and is removed. This intermediary approach eliminates the need for water and detergent while effectively deodorizing the laundry.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If steam is supplied to remove wrinkles, then laundry smoothness is improved, but moisture remains in the laundry

Engineering Contradiction:
Improvesmoothness of laundryVSAvoidmoisture content of laundry
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent maintains continuous useful action by immediately following the steam injection phase with a hot air circulation and condensation phase. The drum continues to rotate, and hot air is circulated to evaporate and remove excess moisture from the laundry, ensuring that wrinkles are removed while moisture content is reduced to acceptable levels.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent discards excess moisture from the laundry through condensation and drainage. After steam injection, the system circulates hot air to evaporate moisture, then condenses the moisture and drains it away. This process removes the harmful excess moisture while preserving the beneficial wrinkle-removal effect of the steam.

Inventive Principle:
Principle #34Discarding and recovering

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 method allows for effective wrinkle removal and deodorization without water, enabling users to wear freshly cleaned and smoothed laundry directly after the cycle, reducing energy and water consumption.

Implementation Method 1

supplying steam of a high temperature to a drum containing laundry

Methodology Applied
Scientific EffectSteam: Phase Change

Implementation Method 2

supplying cold air of a low temperature to the drum to remove moisture from the laundry and to cool the laundry, simultaneously

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 3

supplying hot air of a high temperature to the drum to remove moisture from the laundry

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 4

a condensing process for condensing air discharged from the drum is performing during the supply of the hot air

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentUS8272090B2Operating method for laundry machine
Publication Date: 2012.09.25 LG ELECTRONICS INC
  • US8272090B2 patent drawing
  • US8272090B2 patent drawing
  • US8272090B2 patent drawing

AI summary

A method for operating a washing machine, in which wrinkles are removed from laundry using steam. The method includes supplying steam of a high temperature to a drum containing laundry; and supplying air to the drum. The method facilitates the refreshing of the laundry, such as clothes, thus allowing a user to wear the clothes just after the refreshing of the clothes.