Steam iron
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Solution Overview
Problem
Prolonged use of steam irons leads to mineral scale deposition on the soleplate, reducing efficiency and causing 'spitting' issues that result in wet spots and fabric staining during ironing.
Innovation Solution
A steam iron design featuring a soleplate with an inclined steam generating surface and a fluid flow arrangement that guides scale to a discharge section, combined with a removable scale collector and controlled fluid introduction to prevent scale buildup and enhance steam quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water is supplied to the steam generating surface, then steam is produced for ironing, but scale accumulates on the surface reducing efficiency
Solution Approach 1:
The patent extracts the harmful scale deposits from the steam generating surface by providing a dedicated collation area where scale is transported and collected separately from the active steam generation zones, allowing continuous removal without affecting steam production
Solution Approach 2:
The steam generating surface is designed with self-cleaning capabilities through gravity-driven scale transport to collation areas and fluid flow arrangements that automatically remove scale without requiring manual intervention or shutting down the steam generation process
2Productivity
If the steam generating surface is heated, then water evaporates efficiently, but scale deposits form and cause spitting
Solution Approach 1:
The steam generating surface is segmented into multiple functional zones including active evaporation areas and separate collation areas for scale collection. This segmentation allows water to evaporate efficiently in heated zones while scale is directed to non-heated or cooler collation zones, preventing spitting
Solution Approach 2:
The patent introduces fluid flow as an intermediary mechanism that carries scale from the steam generating surface to collation areas. This fluid mediator transports scale away from heated zones before it can accumulate and cause spitting, while allowing continuous efficient evaporation
3Reliability
If scale accumulates on the steam generating surface, then steam quality deteriorates, but removing scale requires system shutdown
Solution Approach 1:
The patent enables continuous scale removal during steam iron operation through gravity-driven transport to collation areas and fluid flow arrangements. The scale removal process occurs continuously without interrupting the steam generation function, eliminating downtime for maintenance
Solution Approach 2:
The system performs self-cleaning by automatically transporting scale from active steam generation surfaces to collation areas using gravity and fluid flow. This self-service mechanism maintains steam quality continuously without requiring user intervention or system shutdown
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 effectively removes scale from the soleplate, maintaining steam iron efficiency, reducing 'spitting', and preventing fabric staining, thus extending the device's lifespan and improving ironing performance.
Implementation Method 1
the steam generating surface comprises an inclined portion extending relative to the fabric contact surface to guide scale to the scale collation area
Implementation Method 2
a fluid flow arrangement configured to cause fluid flow for transporting scale from the scale collation area to a discharge section
Implementation Method 3
Water from the water reservoir is supplied to a heated steam generating surface of the soleplate and is converted into steam
Implementation Method 4
The large amount of cool fluid introduced by the liquid inlet is able to remove scale from the steam generating surface by causing a thermal shock
Data Source
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AI summary
The present application relates to a steam iron (1) comprising a soleplate (3, 60) having a steam generating surface (16). The steam generating surface (16) has a scale collation area (21) and a guide area (20) configured to guide scale to the scale collation area. The steam iron further comprises a fluid flow arrangement (56) configured to cause fluid flow for transporting scale from the scale collation area to a discharge section (33, 63).