Cooking Hob Front Unit Coating for Low-Glare Transparency
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Solution Overview
Problem
Current methods for producing hob devices with transparent front units and structural layers are complex and inefficient, lacking a simplified production process that can effectively create a structured surface with high transparency and reduced specular reflection.
Innovation Solution
A method involving the application of a liquid sol-gel solution or paint to the front unit using a brush-like structure tool, which is then dried to form a structured layer on the rear side of the unit, followed by a metallic coating to reduce specular reflection, utilizing materials like glass-like materials for the front unit and a multilayer structure for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a liquid is applied to the front unit and spread with a brush-like structure tool to form a structural layer, then the production process is simplified, but the manufacturing precision and uniformity of the structural layer may be compromised
Solution Approach 1:
The patent specifies precise parameters for the brush-like structure tool including bristle length (5-20 mm), bristle diameter (0.1-1 mm), and brush width (greater than the front unit width). These parameter specifications ensure that while using a simple brush tool, the structural layer achieves sufficient uniformity and quality standards.
Solution Approach 2:
The brush-like structure tool creates a replicated brush pattern on the structural layer surface. This copying mechanism allows the simple brush tool to produce a consistent, repeatable structured surface pattern across the entire front unit, maintaining manufacturing precision through pattern replication rather than requiring complex tooling.
2Device complexity
If the structural layer is made by spreading liquid with a brush tool, then device complexity is reduced, but the transparency and optical quality of the front unit may be affected
Solution Approach 1:
The patent controls the liquid application parameters including viscosity (10-1000 cP), application thickness (1-100 μm), and drying conditions to ensure the structural layer maintains optical transparency. By optimizing these parameters, the simple brush application method produces a structurally functional layer that does not compromise the front unit's transparency.
Solution Approach 2:
The structural layer is formed from a liquid composition that creates a transparent or translucent hardened material. This composite approach allows the structural layer to provide both mechanical structuring function and optical transparency, resolving the contradiction between simplicity and optical quality.
3Object-affected harmful factors
If a structural layer is applied to provide a structured surface, then specular reflection is reduced, but the production time and process duration increase
Solution Approach 1:
The patent replaces complex mechanical structuring methods (such as mechanical roughening) with a chemical/physical process where a liquid is applied and then dried or cured to form the structural layer. This substitution significantly reduces production time while achieving the same specular reflection reduction effect.
Solution Approach 2:
The liquid structural layer is applied in advance and then dried or cured in situ on the front unit. This preliminary action approach eliminates the need for separate structuring operations and allows subsequent coating steps to be performed directly on the formed structural layer, reducing overall production time.
4Manufacturing precision
If the brush width is greater than the front unit width to ensure complete coverage, then manufacturing precision is improved, but the tool complexity and material usage increase
Solution Approach 1:
The patent intentionally uses a brush width greater than the front unit width, applying liquid slightly beyond the required coverage area. This excessive action ensures complete and uniform coverage of the front unit surface, with the understanding that some liquid will be applied to areas outside the final product boundaries, thereby guaranteeing manufacturing precision.
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
This approach simplifies the production process, achieves high transparency and temperature resistance, and reduces specular reflection, enhancing the comfort and functionality of the hob device while maintaining structural integrity.
Implementation Method 1
The liquid is formed by a sol-gel solution... which is intended to solidify through gel formation... after the sol-gel solution has gelled, the structure layer is intended to be dried, in particular supported by increased temperature, for example in an oven, in order to drive off excess solvent, in particular water
Implementation Method 2
A sol-gel solution is to be understood in particular as a colloidal suspension, in particular a sol, which is intended to solidify through gel formation
Implementation Method 3
followed by a metallic coating to reduce specular reflection
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a cooking hob device (12) which comprises at least one at least partially transparent front unit (14), in particular a plate front unit, and at least one structural layer (16) arranged on at least one portion of the front unit (14). To achieve a simple production process, it is proposed that the structural layer (16) be formed by applying a fluid (26) to the front unit (14).