Button-Type Steam Regulation Device for Discrete Ironing Control

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Solution Overview

Problem

Existing ironing apparatuses with selective steam delivery lack intuitive and immediate control over steam levels, are difficult to install, and provide unstable steam delivery due to rotary knobs and separate steam tank configurations.

Innovation Solution

A button-type regulation device with a sliding pin and elastic contrast, allowing for simple linear movement to control steam delivery, providing clear and precise control between maximum and partial steam positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a rotary knob is used to regulate steam delivery, then the device can control steam quantity, but the control is not immediate or easy and the position can be unstable

Engineering Contradiction:
Improveease of steam delivery controlVSAvoidstability of steam delivery
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent inverts the conventional rotary knob mechanism into a push-button system with discrete positions. Instead of continuous rotary adjustment that is prone to instability, the button provides discrete, stable positions (first position for maximum steam, second position for reduced steam) that are easier to operate and maintain stable steam delivery.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The continuous rotary control is segmented into discrete positions. The button mechanism divides the steam delivery control into distinct segments (first position and second position), making it easier to operate and ensuring stable delivery at each position rather than continuous adjustment.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If a rotary knob is installed on the iron, then steam control is available, but the installation becomes problematic and complex

Engineering Contradiction:
Improveinstallation flexibilityVSAvoidcomplexity of installation
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent simplifies the installation by inverting the complex rotary knob mechanism into a simpler push-button system that can be directly integrated into the iron's structure, making it easier to install while maintaining control functionality.

Inventive Principle:
Principle #13The other way round (Inversion)

3Loss of information

If a rotary knob is used, then general analogic information is provided, but discrete and precise control of delivery levels is not achieved

Engineering Contradiction:
Improveinformation about delivery levelsVSAvoidprecision of delivery control
Core Design Contradiction:
Loss of informationVSMeasurement precision

Solution Approach 1:

The continuous analogic control is segmented into discrete positions. The button mechanism provides distinct, identifiable positions (first position for maximum steam, second position for reduced steam) that give the user clear information about the delivery level and enable precise control rather than ambiguous continuous adjustment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs visual differentiation (analogous to color changes) through distinct button positions that provide clear visual feedback to the user about the current steam delivery level, eliminating ambiguity and providing precise control information.

Inventive Principle:
Principle #32Color changes

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

Enables easy and intuitive steam level selection with immediate and stable delivery, improving user experience and installation simplicity by providing discrete and consistent control.

Implementation Method 1

a pin able to slide linearly inside the hollow body and elastically contrasted by an elastic element

Methodology Applied
Scientific EffectElastic contrast: Elasticity

Data Source

PatentEP3173519B1Ironing apparatus and corresponding device to regulate steam
Publication Date: 2022.09.21 DE LONGHI APPLIANCES SRL
  • EP3173519B1 patent drawingFigure 1
  • EP3173519B1 patent drawingFigure 2~3
  • EP3173519B1 patent drawingFigure 4~5

AI summary

Ironing apparatus that comprises at least an ironing body, or iron (101), a tank (102) to generate, contain and deliver steam, and at least a regulation device (10) to regulate the quantity of steam delivered. The device (10) is associated with the iron (101) and/or the tank (102) to generate, contain and deliver steam. Said regulation device (10) comprises a button type member (12), in turn comprising an external actuation body (19), a hollow body (14) and a pin (13) sliding linearly inside the hollow body (14) and elastically contrasted by an elastic element (15), wherein on substantially opposite portions of said hollow body (14) on one side a steam inlet pipe (21) is coupled, connected to said tank (102) to generate, contain and deliver steam, and on the other side a steam outlet pipe (22) is coupled, connected to the ironing body (101), and wherein said sliding pin (13), by driving said external actuation body (19), is able to assume at least a maximum steam delivery position, in which it does not interfere with the passage of steam between the steam inlet pipe (21) and the steam outlet pipe (22), and at least a partial steam delivery position in which it at least partly interferes with said passage of steam.