Hinged Steam Generator Drain Cover for Safer Descaling
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Solution Overview
Problem
Existing household ironing appliances with steam generators face issues of high manufacturing costs and user safety due to metal plugs that can cause burns, and removable plastic covers that are easily lost and not ergonomic.
Innovation Solution
A household ironing appliance with a steam generator featuring a removable plug and a hinged plastic cover that secures to the case, providing thermal insulation and ergonomic design, allowing the cover to occupy closed and open positions for access and liquid collection, and featuring a bistable hinge for automatic positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal plug is used to close the drain orifice, then the plug can withstand high temperatures, but the user may get burned by touching the metal part
Solution Approach 1:
A plastic cover is introduced as an intermediary element between the user's hand and the hot metal plug. The cover is thermally isolated from the plug by an air gap, preventing heat transfer to the user while allowing visual monitoring of the drain orifice area.
2Ease of manufacture
If a removable plastic cover is used to cover the metal cap, then manufacturing cost is reduced and thermal insulation is improved, but the cover is easily lost and not ergonomic to use
Solution Approach 1:
The cover and case are merged into a single molded piece, eliminating the need for separate assembly of the cover and its attachment mechanism. This integration reduces manufacturing steps, ensures the cover cannot be lost, and provides ergonomic finger engagement features directly formed in the molded structure.
3Ease of operation
If the cover is secured to the case by a hinge, then the cover remains attached and is easier to use, but the device complexity increases
Solution Approach 1:
The hinge connection is merged into the molded structure of the case and cover, forming an integrated assembly without separate hinge components. This reduces structural complexity while maintaining the ergonomic benefits of a hinged, always-attached cover that can swing open for access and closed for protection.
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 reduces the risk of burns, lowers manufacturing costs, enhances ergonomics, and ensures efficient liquid drainage and scale visualization, while maintaining thermal insulation and preventing liquid from entering the device.
Implementation Method 1
the cover is secured to the case by a hinge, the cover being able to occupy a closed position in which it hides the stopper and an open position in which it releases the access to the plug
Implementation Method 2
the cover is made of plastic material, advantageously of polypropylene... Such a technical solution has the advantage of being very economical to implement. Moreover, such a technical characteristic makes it possible to reduce the manufacturing cost of the apparatus
Implementation Method 3
the cover in the open position extending under the outlet of the drain orifice and having a hollow shape which collects the liquid flowing through the drain hole
Data Source
Figure 1
Figure 2
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AI summary
Domestic ironing appliance comprising a housing (20) containing a steam generator comprising a drain orifice (42) allowing the evacuation of scale, a removable plug (43) closing said drain orifice (42), accessible from the exterior of the casing (20), and a cover (5) coming to hide the said cap (43), characterized in that the cover (5) is secured to the casing (20) by a hinge (6), the cover (5) able to occupy a closed position in which it hides the stopper (43) and an open position in which it frees access to the stopper (43).