Dual-Element Steam Device with Branching for Boost Mode Control

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Solution Overview

Problem

Existing steam devices for ironing systems lack the ability to provide a variable steam output, particularly a short-term boost for handling thick textiles, and struggle to balance performance with energy efficiency, as the maximum steam generation is limited by electrical connection load and heating system efficiency.

Innovation Solution

A steam device with two heating elements and a branching element that allows for normal and boost states, where the second heating element is activated only during boost mode to increase steam output, and a control device manages energy usage to prioritize the first heating element for normal operation and the second for energy storage and boosting, enabling a higher steam output while maintaining energy efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a single heating element is used for steam generation, then the device operates with simple structure and lower energy consumption, but the steam output cannot be boosted for thick fabrics

Engineering Contradiction:
Improvesteam outputVSAvoidheating system structure
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The heating system is segmented into two independent heating elements: a first heating element for normal steam generation and a second heating element for steam boosting. This segmentation allows each element to be optimized for its specific function while enabling variable steam output by selectively activating either one or both elements based on fabric thickness requirements.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If the second heating element is activated continuously, then maximum steam output is available, but electrical energy consumption increases significantly

Engineering Contradiction:
Improvesteam outputVSAvoidelectrical energy consumption
Core Design Contradiction:
Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts its operational state by selectively activating the second heating element only when boost mode is required. The control device monitors user input and fabric thickness requirements, switching between single-element normal operation and dual-element boost operation, thereby optimizing energy consumption while providing maximum steam output when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by switching between different heating element configurations: normal mode uses only the first heating element at standard power, while boost mode activates the second heating element to increase total steam generation capacity. This parameter change allows the system to adapt energy consumption to actual user needs.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If a branching element is added to direct steam to the second heating element, then steam boost functionality is enabled, but the device complexity increases

Engineering Contradiction:
Improvesteam output variabilityVSAvoidsteam path configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A branching element acts as an intermediary component that directs steam flow from the first heating element to either the handheld device directly or to the second heating element for additional heating. This intermediary enables flexible steam path configuration and allows the system to adapt between normal and boost modes without requiring complex redesign of the entire steam generation system.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Quantity of substance

If the first heating element is used for all steam generation, then the system operates simply, but it cannot provide additional steam for problem areas or thick fabrics

Engineering Contradiction:
Improvesteam outputVSAvoidoperation simplicity
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The first heating element serves multiple functions: it operates independently for normal steam generation and also serves as a steam source that can be directed to the second heating element for boost operation. This multi-functionality allows the system to maintain operational simplicity while providing enhanced steam output capability when required, as the same first heating element supports both normal and boost modes.

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

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 solution allows for a measurable increase in steam generation during boost mode while ensuring energy efficiency, reducing electrical energy consumption and enhancing handling of thick textiles without extending standby time or complicating operation.

Implementation Method 1

a first heating element (202) configured to vaporize at least a portion of a liquid and supply it as steam

Methodology Applied
Scientific EffectVaporization: Evaporation

Implementation Method 2

a second heating element (206) configured to further heat the steam supplied by the first heating element

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentEP3929346B1Steam device for an ironing device comprising a hand-held device, iron with a steam device and method for operating the steam device
Publication Date: 2023.04.19 MIELE & CO KG
  • EP3929346B1 patent drawingFigure 1
  • EP3929346B1 patent drawingFigure 2
  • EP3929346B1 patent drawingFigure 3

AI summary

The invention relates to a steam device (102) for an ironing device (100) comprising a handheld unit (106). The steam device (102) has a first heating element configured to vaporize a liquid and provide it as steam, a pump configured to deliver the liquid to the first heating element, a second heating element configured to further heat the steam and supply it to the handheld unit (106), and a branch element. The branch element has a normal position associated with a normal operating state of the ironing device (100) and a boost position associated with a boost state of the ironing device (100), and is configured to supply the steam to the handheld unit (106) in the normal position and to direct it to the second heating element in the boost position.