PVC-U Fire Window with Metal Reinforcement
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Solution Overview
Problem
Existing fire-resistant windows and doors made of steel profiles have poor thermal insulation and high maintenance costs, while those using plastic profiles fail to meet stringent fire resistance requirements, such as the F30 test, due to insufficient structural support during thermal loads.
Innovation Solution
A casement window framework utilizing at least four hollow-chamber PVC-U profiles with metal reinforcement and a continuous metal mounting bracket to securely retain a fire-resistant glazing, which includes intumescent materials and steel components for enhanced structural integrity and thermal resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel profiles are used for fire-resistant windows, then fire resistance is improved, but thermal insulation deteriorates
Solution Approach 1:
The window framework uses a composite structure combining PVC-U profiles with metal reinforcement elements. The PVC-U profiles provide thermal insulation while the metal reinforcement (corner brackets and mounting brackets) ensures fire resistance and structural stability. This composite approach allows the window to meet both fire resistance standards and thermal insulation requirements simultaneously.
2Loss of energy
If plastic profiles are used for fire-resistant windows, then thermal insulation is improved, but fire resistance deteriorates
Solution Approach 1:
The invention combines plastic PVC-U profiles with metal reinforcement components to create a composite structure that achieves both thermal insulation and fire resistance. The metal corner brackets and continuous metal mounting brackets provide the necessary fire resistance and structural integrity, while the PVC-U profiles maintain thermal insulation properties.
Solution Approach 2:
Metal reinforcement is applied locally at critical positions (corners and mounting areas) rather than throughout the entire profile. The continuous metal mounting bracket extends along the sides where the fire-resistant insert is retained, providing fire resistance exactly where needed while preserving thermal insulation in other areas.
3Device complexity
If discontinuous mounting brackets are used, then device complexity is reduced, but structural stability deteriorates
Solution Approach 1:
The continuous metal mounting bracket acts as an intermediary element that connects the fire-resistant insert to the metal reinforcement in the PVC-U profile. This continuous bracket provides stable retention and support for the heavy fire-resistant glazing, preventing sagging under thermal loads and ensuring the insert remains securely positioned during fire conditions.
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 provides a durable and thermally resistant fire-resistant window system that effectively moderates forces during fires, preventing fuel gas penetration and meeting higher fire load standards by ensuring stable retention of the fire-resistant glazing and enhancing thermal insulation.
Implementation Method 1
as a result of intumescent material in at least one hollow space in the profile an enhanced fire safety is to be achieved
Implementation Method 2
Steel profiles, however, have a rather poor thermal insulation and are surpassed by plastic windows
Data Source
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AI summary
A casement window or framework for a fire-resistant window or a fire resistant door is characterized in that: - the casement window or framework respectively comprises at least four hollow-chamber profiles based on PVC-U, as well as a fire resistant insert mounted in the casement window or framework respectively, more particularly a fire resistant glazing; - the hollow-chamber profiles based on PVC-U comprise a central reinforcement chamber as well as further hollow chambers; - the reinforcement chambers of the hollow-chamber profiles of the casement window or framework respectively comprise a metal reinforcement; - the fire resistant insert is retained on all four sides on the outside and/or the inside in the area of the edge by a continuous metal mounting bracket extending over the relevant side, where - the mounting brackets are tightened to the respective metal reinforcements in the reinforcement chambers of the hollow-chamber profiles.