Flat Water Tank Layout for Easier Steam Ironing Refills

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Solution Overview

Problem

Existing steam ironing devices require users to dismantle the unit to fill the water tank, making it difficult to handle and transport due to the bulky design, which prevents easy filling under low-design water taps and poses a risk of spilling or tipping.

Innovation Solution

A steam ironing station with a removable water tank featuring a flat, stepped design allowing one-handed gripping and horizontal filling, equipped with a handle element, valve arrangement for automatic emptying, and a U-shaped indentation for ergonomic handling and secure positioning under a water tap, ensuring comfortable transport and filling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the water tank is designed with a large filling volume to enable long ironing time, then the ironing duration is extended, but the tank becomes bulky and difficult to transport and fill under low water taps

Engineering Contradiction:
Improveironing durationVSAvoidtransport and filling ease
Core Design Contradiction:
Duration of action of moving objectVSEase of operation

Solution Approach 1:

The water tank transitions from a traditional three-dimensional bulky shape to a predominantly two-dimensional flat design. The tank body is flattened while maintaining sufficient water capacity through optimized surface area utilization. This dimensional transformation allows the tank to be easily held horizontally under low water taps and transported in a natural posture without requiring excessive vertical or horizontal space.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Quantity of substance

If the water tank is designed as a traditional bulky container to maximize filling volume, then the storage capacity is sufficient, but the center of gravity becomes unfavorable causing tipping risk during transport

Engineering Contradiction:
Improvewater capacityVSAvoidtransport stability
Core Design Contradiction:
Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The water tank employs an asymmetric flat design where the mass distribution is deliberately optimized to create a favorable center of gravity position. The tank body is flattened with strategic thickness variations and internal structuring that concentrates mass toward the lower and central regions. This asymmetric mass distribution ensures stable transport posture and prevents tipping, while the flat profile allows easy horizontal holding during filling operations.

Inventive Principle:
Principle #4Asymmetry

3Ease of operation

If the water tank is designed with a compact shape to ease handling, then the transportability improves, but the filling volume is reduced limiting ironing time

Engineering Contradiction:
Improvehandling easeVSAvoidfilling volume
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

The water tank applies local quality optimization by varying the thickness and density distribution within the flat tank body. Specific regions are designed with enhanced capacity while maintaining the overall flat profile. The tank body incorporates strategic thickening in water-storage zones and thinning in handling zones, allowing the flat design to accommodate sufficient water volume without compromising portability or requiring bulky external dimensions.

Inventive Principle:
Principle #3Local quality

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 safe and comfortable transport and filling of the water tank in a natural posture, with optimal center of gravity and visible filling levels, reducing the risk of spilling and tipping, and allowing for efficient filling without additional effort.

Implementation Method 1

the valves open so that the water can flow into the boiling station here due to the hydrostatic pressure

Methodology Applied
Scientific EffectHydrostatic pressure: Pressure Gradient

Data Source

PatentEP2474661B1Ironing system
Publication Date: 2013.04.24 MIELE & CO KG
  • EP2474661B1 patent drawingFigure 1
  • EP2474661B1 patent drawingFigure 2
  • EP2474661B1 patent drawingFigure 3~4

AI summary

The ironing station (1) has an ironing board (2) with a foldable frame (3), which is arranged on a floor-mounted unit (4) designed as a column with a steam generator for a flat iron. A water tank (5) is inserted in an openly accessible pocket arranged on the column, where the pocket is arranged on the rear wall (7) of the floor-mounted unit. The water tank is made of transparent plastic molding.