SiOx Coated Appliance Housing Wall
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Solution Overview
Problem
Conventional metal housing surfaces for household appliances are difficult to clean and unattractive, leading to costly and labor-intensive maintenance.
Innovation Solution
A housing wall coated with silicon oxide (SiOx) on a substrate such as aluminum or stainless steel, which provides a durable and easy-to-clean surface, enhanced by black anodizing or powder coating for improved abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional metal surfaces are used for housing, then the housing is easy to manufacture, but the surface is difficult to clean and requires careful maintenance
Solution Approach 1:
The patent applies composite materials by combining a metal substrate (aluminum or stainless steel) with a silicon oxide coating layer. This composite structure maintains the manufacturing advantages of metal while providing the easy-to-clean properties of the SiOx coating, which forms a smooth, non-porous surface that resists dirt accumulation and is simple to maintain.
Solution Approach 2:
The patent changes the surface parameters of the metal housing by applying a silicon oxide coating with specific characteristics (smooth, non-porous structure). This parameter change transforms the surface properties from dirty-prone conventional metal to easy-to-clean surface, while the coating thickness is controlled within 5-50 nm to maintain optimal performance.
2Strength
If conventional metal surfaces are used for housing, then the housing structure is robust, but the surface appearance is unattractive and requires frequent cleaning
Solution Approach 1:
The composite structure combines the structural robustness of metal substrate with the aesthetic appeal of the silicon oxide coating. The SiOx layer provides a smooth, attractive surface finish that enhances the appearance of the housing while the metal substrate maintains the necessary structural strength and robustness.
Solution Approach 2:
The patent changes the surface appearance parameters by applying a silicon oxide coating that creates a smooth, aesthetically pleasing finish. The coating thickness is precisely controlled (5-50 nm) to achieve the desired appearance quality while maintaining structural integrity.
3Reliability
If a thicker protection layer is applied to improve wear resistance, then abrasion resistance increases, but the cleaning difficulty increases and appearance deteriorates
Solution Approach 1:
The patent optimizes the coating thickness parameter to a specific range (5-50 nm) that simultaneously achieves adequate abrasion resistance and maintains easy cleanability. This precise parameter control ensures the surface remains smooth and non-porous for cleaning while providing sufficient protection against wear.
Solution Approach 2:
The patent applies local quality by ensuring the silicon oxide coating provides enhanced protection specifically at the surface level where wear and cleaning occur, while the underlying metal substrate maintains its structural properties. The coating thickness is localized to the optimal range to balance wear resistance with cleanability.
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 SiOx coating results in a surface that is resistant to dirt and scratches, facilitating maintenance and enhancing the aesthetic appeal of the appliance, while ensuring a long service life.
Implementation Method 1
the deposition of the protection layer is achieved by means of Physical Vapour Deposition
Implementation Method 2
the substrate has been treated by black anodizing. In this way, the abrasion resistance of the surface can be improved
Data Source
Figure 1
AI summary
The present invention relates to a housing wall (1), particularly for a housing of a home appliance, comprising a substrate (2) and a protection layer (3) arranged on the substrate (2), wherein the material of the protection layer (3) comprises or is silicon oxide (SiOx).