Finishing board with a planar heating element
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Solution Overview
Problem
Conventional flat heating panels for interior construction experience embrittlement and cracking over time due to contact between heating foils and cardboard layers, leading to a significant drop in heating output and potential failure.
Innovation Solution
Integrating a surface heating element between the gypsum core and one of the cardboard layers with an intermediate barrier layer to prevent material migration and diffusion, ensuring the heating output remains constant over long periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the heating foil is directly contacted with the cardboard layer of the plasterboard, then the production process is simple, but the heating panel experiences embrittlement and cracking over time leading to failure
Solution Approach 1:
A protective intermediate layer is introduced between the heating foil and the cardboard layer of the plasterboard. This intermediate layer acts as a barrier that prevents direct contact between the heating foil and the cardboard, thereby preventing embrittlement and cracking of the cardboard while maintaining production simplicity. The intermediate layer is applied to the cardboard layer before the heating foil is attached, creating a protective interface that ensures long-term reliability of the heating panel.
2Device complexity
If the heating foil is directly contacted with the cardboard layer, then the device structure is simple, but the heating output drops significantly over time
Solution Approach 1:
The protective intermediate layer serves as a mediator that prevents degradation of the cardboard layer while maintaining good thermal contact between the heating foil and the plasterboard. By preventing embrittlement and cracking, the intermediate layer ensures that the heating output remains stable over time, avoiding the significant drop in heating performance that would otherwise occur due to structural degradation.
3Ease of manufacture
If the heating foil is directly contacted with the cardboard layer, then the manufacturing process is simple, but the heating panel fails completely after extended use
Solution Approach 1:
The protective intermediate layer is applied to the cardboard layer in advance, before the heating foil is attached. This preliminary protective action prevents future degradation issues, ensuring that the heating panel maintains its functionality throughout its intended service life. The intermediate layer is pre-positioned to prevent direct contact between the heating foil and cardboard, thereby extending the operational lifespan of the heating panel without complicating the overall manufacturing process.
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 intermediate barrier layer effectively prevents embrittlement and cracking, maintaining consistent heating performance and extending the lifespan of the heating panels.
Implementation Method 1
a flat heating element with an electrically operable heating layer contacted via lateral connecting electrodes
Implementation Method 2
an intermediate layer is arranged between the heating layer and the surface of the cardboard layer, which intermediate layer is designed as a barrier layer against the transport of substances between the heating layer and the cardboard layer
Data Source
Figure 1~2
Figure 3~6
AI summary
The invention relates to a finishing board (1) having a planar heating element for interior finishing, comprising a gypsum plasterboard (2) which has a gypsum core (5) arranged between a first (3) and a second cardboard layer (4), and a planar heating element (10) having an electrically operable heating layer (7) contacted via lateral connecting electrodes (6). According to the invention, an intermediate layer (13) is arranged between the heating layer (7) and the surface of the cardboard layer (3, 4) and is formed as a barrier layer against mass transfer between the heating layer (7) and the cardboard layer (3, 4).