Steam Additive Control in Dryers for Load-Specific Textile Treatment

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Solution Overview

Problem

Existing textile drying methods do not optimize the effect of additives and their consumption, as they supply additives in a fixed manner independent of textile requirements, leading to inefficient use and potential overconsumption.

Innovation Solution

A method and dryer system that supply at least one additive to textiles during the drying cycle, with parameters adjusted based on program selection and textile characteristics, such as weight and type, using a control unit to optimize additive effect and reduce consumption, including the use of steam and other additives like fragrance or disinfectants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If additives are supplied in a fixed manner independent of textile requirements, then the drying process can be simplified and operated consistently, but the effect of additives is not optimized and consumption is increased

Engineering Contradiction:
Improvedrying efficiencyVSAvoidadditive consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The patent implements dynamic adjustment of additive supply parameters based on detected textile characteristics. The control unit modifies at least one additive supply parameter in dependency of detected textile characteristics such as weight, humidity, or material type, transforming the fixed supply system into a dynamic one that adapts to varying textile requirements throughout the drying cycle.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes physical or chemical parameters of additive supply based on textile characteristics. The control unit modifies parameters such as additive amount, flow rate, temperature, or supply timing in dependency of detected textile properties, enabling optimized additive effect while reducing overall consumption by supplying only what is needed for each specific load.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If additives are supplied in a fixed manner, then the device operation is simple, but the effect of additive treatment is not optimized for different textile requirements

Engineering Contradiction:
Improvedevice operation simplicityVSAvoidadditive treatment effect
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system performs self-adjustment by automatically detecting textile characteristics and autonomously modifying additive supply parameters without user intervention. The control unit receives detection signals from sensors measuring textile properties and automatically changes additive supply parameters, enabling the system to serve itself in optimizing the drying process for varying textile loads.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements a feedback loop where detection means continuously monitor textile characteristics during the drying cycle and provide information to the control unit, which then adjusts additive supply parameters accordingly. This closed-loop control ensures that additive treatment effect is optimized based on actual textile conditions while maintaining automated operation.

Inventive Principle:
Principle #23Feedback

3Loss of substance

If the dryer system detects and adjusts parameters based on textile characteristics, then additive effect is optimized and consumption is reduced, but the device complexity increases

Engineering Contradiction:
Improveadditive consumptionVSAvoidsystem complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The control unit serves multiple functions: it controls the drying cycle, receives signals from various detection means (weight sensors, humidity sensors), determines textile characteristics, and adjusts additive supply parameters. By making the control unit universal and multi-functional, the patent avoids adding separate dedicated components for each function, thereby reducing overall system complexity while achieving optimized additive management.

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

Solution Approach 2:

The patent combines the detection means and control functions into an integrated system where the control unit processes information from multiple sensors and directly controls additive supply. By merging the control of drying parameters and additive supply adjustment into a single coordinated system, the patent reduces complexity compared to having separate independent systems for each function.

Inventive Principle:
Principle #5Merging (Combining)

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 approach ensures that additives are used optimally and efficiently, tailored to the specific requirements of the textiles, reducing waste and enhancing drying performance by adjusting parameters like amount, flow rate, and composition based on the selected program and detected characteristics.

Implementation Method 1

Introduction into the air or onto the textiles may be performed by a supply unit producing steam

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

Data Source

PatentEP2224053B1Dryer with additive-assisted drying program
Publication Date: 2011.12.21 ELECTROLUX HOME PROD CORP NV
  • EP2224053B1 patent drawingFigure 1~2
  • EP2224053B1 patent drawingFigure 3
  • EP2224053B1 patent drawing

AI summary

Method of drying textiles in a dryer (2), the drying sequence including the supply of at least one additive to the textiles, wherein at least one additive supply parameter is modified in dependency of a program selection and/or textile characteristic; characterized in that the additive is injected as steam, in particular the steam being water steam or mainly comprising water; and the at least one additive supply parameter is modified in dependency of the weight of the textiles.