Hob Shielding Plate Coating to Suppress Light Artifacts and Reflection
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Solution Overview
Problem
Existing hobs suffer from light artifacts and inefficient electromagnetic shielding due to defects in coatings, leading to reduced user comfort and increased production defects.
Innovation Solution
A hob design featuring a shielding plate made of aluminum with a coating that suppresses directed light reflection, incorporating a roughened surface and a light-absorbing coating to enhance light absorption efficiency and user comfort, while eliminating the need for light-shielding elements on the control panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an opaque coating is applied to the underside of the hob plate to prevent light artifacts, then light artifact visibility is reduced, but coating defects cause light to pass through and create artifacts
Solution Approach 1:
The coating system uses different coating types (transparent with pigment, opaque, reflective) applied to different areas or layers, where each coating type addresses specific缺陷 scenarios and light paths, providing redundant protection against light artifacts
Solution Approach 2:
The multi-layer coating structure creates a composite system where each layer performs a specific function (light absorption, opacity, reflection), and the combination provides superior performance and defect tolerance compared to single-layer coatings
2Object-affected harmful factors
If post-processing of the hob plate is performed to prevent light artifacts, then light artifact prevention is improved, but manufacturing complexity and time increase
Solution Approach 1:
The coating layers are applied to the shielding plate during the manufacturing process before final assembly, preventing light artifacts from the outset rather than requiring post-assembly processing or adjustments
Solution Approach 2:
The multi-layer coating system is integrated into the manufacturing process as a unified structure, where the combined layers provide comprehensive light artifact prevention in a single manufacturing step rather than requiring multiple post-processing operations
3Object-affected harmful factors
If light-shielding elements are added to the control panel area to block light, then light artifact visibility is reduced, but device complexity and component count increase
Solution Approach 1:
The coating layers on the shielding plate serve multiple functions: electromagnetic shielding (performed by the aluminum base), light absorption (transparent coating with pigment), light blocking (opaque coating), and light reflection (reflective coating), eliminating the need for separate light-shielding elements in the control panel area
Solution Approach 2:
The electromagnetic shielding function and light artifact prevention function are merged into a single integrated shielding plate structure with multi-layer coating, rather than using separate components for each function
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 reduces light reflections, increases manufacturing efficiency, and enhances user comfort by ensuring that the control panel area remains free of light-shielding elements, thereby improving overall appliance performance and reducing defective production.
Implementation Method 1
at least one section of the shielding plate is provided to substantially suppress at least one directed reflection of light, in particular visible light
Implementation Method 2
the section has a roughened surface, in particular a ground, sandblasted and/or etched surface
Data Source
Figure 1~2
Figure 3
AI summary
The invention is based on a household appliance device, in particular a hob device, with at least one shielding plate (20a-b) for electromagnetic shielding of at least one electronic system. In order to improve efficiency, it is proposed that at least one section (22ab) of the shielding plate (20a-b) is intended to substantially suppress at least one directed reflection of light.