Nested Fire Protection Half-Shell for Stable Corner Cladding
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Solution Overview
Problem
Conventional fire protection cladding elements, especially those designed as corner elements with plasterboard, lack the highest fire protection class due to exposed plasterboard layers and have stability issues, making them less effective when exposed to fire.
Innovation Solution
A fire protection half-shell element composed of two nested partial elements with a connecting trapezoidal element, where the outer partial element has a gypsum core encased with glass fleece, and the inner surface is coated with aluminum to enhance stability and prevent glass fleece from entering ventilation ducts, ensuring a continuous, intact glass fleece layer for improved fire resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fire protection cladding uses plasterboard layers on the outside or inside, then it provides basic fire protection, but it cannot claim the highest fire protection class
Solution Approach 1:
The patent uses a composite structure consisting of a gypsum core board encased in glass fleece. This composite material combination provides superior fire protection properties compared to conventional plasterboard, achieving the highest fire protection class while maintaining manufacturing feasibility through a structured assembly process.
Solution Approach 2:
The invention employs a nested structure where the glass fleece encases the gypsum core board, and the entire assembly is positioned within a metal frame. This nested arrangement protects the gypsum core while maintaining structural integrity and fire resistance.
2Reliability
If glass fleece is used to encase the gypsum core, then fire resistance is significantly increased, but glass fleece easily tears or breaks in bending areas
Solution Approach 1:
The patent applies different properties to different parts of the structure. The glass fleece is used where fire protection is critical, while the metal frame provides structural support and rigidity. This local differentiation allows the glass fleece to perform its fire protection function without bearing mechanical loads that would cause tearing.
Solution Approach 2:
The metal frame acts as an intermediary structure that provides mechanical support to the glass fleece-gypsum assembly. The frame bears the structural loads and prevents bending stresses from being transmitted to the glass fleece, thereby preventing tears while maintaining fire protection.
3Reliability
If corner elements are used for fire protection cladding, then joints accessible from outside are eliminated, but stability issues remain
Solution Approach 1:
The metal frame provides self-supporting stability to the fire protection cladding assembly. The frame's rigid structure maintains the position and orientation of the glass fleece-gypsum core board, ensuring structural stability without requiring additional external support elements.
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 significantly increases the fire resistance of bent or folded elements, provides a cost-effective and simple assembly method, and ensures the highest fire protection class by maintaining an intact glass fleece layer, even in bending areas, while preventing water or steam escape during a fire.
Implementation Method 1
at least the plate that forms the outer partial element has a gypsum core that is at least partially encased with glass fleece
Implementation Method 2
the inner surface of the inner partial element is provided with a metal, in particular aluminum, coating... the metal or aluminum coating can prevent crystal water from evaporating when fire strikes from the outside
Data Source
AI summary
Fire protection element (3), in particular for cladding steel supports, ventilation or cable ducts, it comprising at least one panel designed as a corner element which has a gypsum core covered at least in regions with glass fleece.