Heating Structure for Electric Heating Floor
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Solution Overview
Problem
The thermal expansion rate and cold shrinkage rate of electric heating films and electrodes in electric floor heating systems differ, leading to gaps and potential short circuits due to poor contact.
Innovation Solution
The heating structure incorporates an adhesive that generates a penetrating adhesive force between the electric heating film and the electrode, ensuring close contact and resisting external forces that cause separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied to bond the electric heating film and electrode, then close contact is maintained and circuit reliability improves, but the complexity of the bonding process increases
Solution Approach 1:
The patent introduces adhesive as an intermediary substance between the electric heating film and electrode. The adhesive penetrates through the electrode and electric heating film to create strong bonding, ensuring close contact and preventing gaps caused by thermal expansion differences. This mediator resolves the contradiction by providing reliable bonding without requiring complex mechanical fastening systems.
Solution Approach 2:
The patent utilizes the parameter change of the adhesive during the pressing process. The adhesive transitions from a liquid or semi-liquid state to a solid bonded state under heat and pressure, creating permanent bonding between layers. This parameter change allows the adhesive to flow and penetrate the electrode and heating film during bonding, then solidify to maintain close contact during thermal cycling.
2Reliability
If the electrode and electric heating film are tightly bonded, then short circuit risk decreases, but the manufacturing precision requirements increase
Solution Approach 1:
The adhesive acts as a forgiving intermediary that can accommodate minor misalignments between the electrode and electric heating film. During the pressing process, the adhesive flows and penetrates to create bonding even with slight positioning variations, reducing the stringency of manufacturing precision requirements while still achieving tight bonding to prevent short circuits.
Solution Approach 2:
The patent utilizes the porous or permeable nature of the adhesive material, which allows it to penetrate through the electrode and electric heating film layers. This penetration capability enables the adhesive to create strong bonding bridges across the interfaces, maintaining electrical contact reliability even when manufacturing alignment is not perfectly precise.
3Stability of the object's composition
If adhesive is used to penetrate and bond the layers, then thermal expansion compatibility improves, but the manufacturing process complexity increases
Solution Approach 1:
The patent exploits parameter changes of the adhesive during the pressing process. The adhesive is applied in a soft, penetrable state, then subjected to heat and pressure that cause it to flow through the electrode and heating film, creating deep bonding. After cooling, the adhesive solidifies to provide stable bonding that accommodates thermal expansion differences. This parameter transformation simplifies the overall manufacturing by combining multiple functions in one pressing step.
Solution Approach 2:
The adhesive is applied to the electrode or heating film before the final assembly pressing. This preliminary application allows the adhesive to be in optimal condition for penetration and bonding, and the subsequent pressing process simply activates the bonding through heat and pressure. This preliminary action approach reduces manufacturing complexity by preparing the bonding interface in advance.
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 solution maintains close contact between the electric heating film and the electrode, reducing or avoiding gaps and short circuits, thereby enhancing the safety and reliability of the heating structure.
Implementation Method 1
the adhesive generates an adhesive force in the direction of penetrating the electrode and/or the electric heating film
Implementation Method 2
the electrode is connected with an external power source, and when energized, the electric heating film generates heat
Data Source
AI summary
The present invention provides a heating structure for an electric heating floor, includes a first base material layer, an electric heating film, an electrode, and a s second base material layer stacked in sequence from bottom to top. The adhesive is arranged on the first base material layer and the second base material layer, two ends of a first surface of the electric heating film are each arranged with the electrode, the first base material layer is adhered to a second surface of the electric heating film, and the second base material layer is adhered to the first surface of the electric heating film and the electrode. Each layer is adhered and fixed through a pressing process. The adhesive generates an adhesive force in the direction of penetrating the electrode and/or the electric heating film, so that the electric heating film is in close contact with the electrode.