Thermally Isolated Folding Gate Frame Fastening for Noise Control
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Solution Overview
Problem
Existing gateframe fastenings for folding gates, particularly those made of aluminum, suffer from cold bridges leading to thermal insulation issues, corrosion due to condensation, and noise and vibration problems due to undamped vibrations.
Innovation Solution
A gateframe fastening design with inner and outer support limbs connected by a thermally insulating separating web, supporting the gate leaf suspension on both, using materials with low thermal conductivity and vibration-damping properties, and optionally incorporating a separating chamber and hollow profile chamber for improved thermal and sound insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If aluminum profiles are used for gateframe fastenings, then high strength and durability are achieved, but cold bridges and thermal insulation problems occur
Solution Approach 1:
A thermally insulating separating web is introduced as an intermediary element between the inner and outer support limbs of the aluminum gateframe profile. This separating web has thermal conductivity of at most 0.3 W/(m*K), which is more than 600 times lower than aluminum, effectively blocking the cold bridge while the aluminum limbs maintain their structural strength function.
Solution Approach 2:
The gateframe profile is designed as a composite structure combining aluminum support limbs with a non-metallic thermally insulating separating web. This composite design allows the aluminum parts to provide mechanical strength while the insulating web provides thermal protection, achieving both strength and thermal insulation requirements simultaneously.
2Strength
If aluminum profiles are used for gateframe fastenings, then high strength is achieved, but condensation and corrosion damage occur
Solution Approach 1:
The thermally insulating separating web acts as a mediator that also serves as a corrosion barrier. By breaking the continuous aluminum path, it prevents condensation formation on the aluminum surfaces, thereby eliminating the primary cause of corrosion while the aluminum limbs retain their load-bearing capacity.
3Duration of action of stationary object
If aluminum profiles are used for gateframe fastenings, then durability is achieved, but vibration and noise problems occur
Solution Approach 1:
The separating web serves as a vibration-damping intermediary between the inner and outer support limbs. Its non-metallic material properties provide inherent vibration damping, reducing the transmission of vibrations generated during gate operation into the gateframe structure, thereby lowering noise emissions while the aluminum limbs maintain their durability.
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 design effectively reduces thermal conductivity, minimizes corrosion and noise, and enhances vibration damping, while maintaining structural integrity and reducing material usage and assembly complexity.
Implementation Method 1
an inner support limb (7) protruding from the fastening limb (2) and connected to an outer support limb (9) via a thermally insulating separating web (8)... materials can be used as the separating web which themselves have only low strength but are characterized by particularly good thermal insulating properties, in particular a thermal conductivity of at most 0.3 W/(m*K)
Implementation Method 2
with the appropriate choice of material, especially when polyamide is used as the separating web material, particularly favorable vibration-damping properties can be achieved in addition to thermal decoupling, so that not only are vibrations that reduce the fatigue strength of the gateframe profile reduced, but also undesirable sound propagation in the masonry is largely avoided
Data Source
AI summary
A doorframe fastening for a folding door comprises a doorframe profiled section (1), which has a securing limb (2) and a door leaf suspension (3). The doorframe fastening reliably withstands high weight loads and reduces noise emission but still allows a long-term use while avoiding cold bridges and damage from corrosion. An inner support limb (7) protrudes from the securing limb (2), said inner support limb being connected to an outer support limb (9) via a thermally insulating separating web (8), and the door leaf suspension (3) is supported both on the inner (7) as well as on the outer support limb (9).