Reinforced Duct Insulation Panel With Airtight Fire-Resistant Coating
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Solution Overview
Problem
Current air distribution ducts made from fibreglass wool panels face challenges with mechanical resistance, air tightness, and fire resistance, particularly when exposed, requiring additional finishes that increase installation costs and complexity, and pose risks due to flammability and inadequate perforation resistance.
Innovation Solution
A reinforced insulation panel with a dual-layer external coating consisting of a bonded aluminium sheet for air tightness and a woven fibreglass sheet for reinforcement, providing a decorative finish, improved mechanical resistance, and enhanced fire resistance without the need for additional coatings or concealment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex sheet with Kraft paper, fibreglass mesh and aluminium is used for air tightness, then air tightness is ensured, but mechanical resistance and perforation resistance remain insufficient
Solution Approach 1:
The invention uses a composite external coating structure comprising multiple layers: a fibreglass wool core, a binder layer, an aluminium sheet layer for air tightness, and an additional outer layer (such as painted fibreglass mesh or decorative panels) for enhanced mechanical resistance and aesthetic finish. This multi-layer composite structure simultaneously achieves air tightness, mechanical strength, and decorative requirements.
Solution Approach 2:
The invention combines multiple functions into the external coating system: air tightness (aluminium layer), mechanical reinforcement (outer fibreglass mesh or panel layers), and decorative finish (painted or decorative panels) are integrated into a unified external coating structure that works together to satisfy all requirements simultaneously.
2Shape
If paint or lacquered spray finishes are applied to achieve decorative appearance, then aesthetic requirements are met, but fire resistance classification deteriorates due to flammable materials
Solution Approach 1:
The invention changes the material parameters of the decorative finish by using fire-resistant paints or lacquers with appropriate fire ratings, or alternatively using non-combustible decorative panels (such as fibre cement or metal panels) that maintain the aesthetic appearance while ensuring fire resistance classification is not compromised.
Solution Approach 2:
The invention applies different material properties to different parts of the external coating: the aluminium layer provides air tightness, the binder layer provides adhesion, and the outer decorative layer (painted or panels) provides both aesthetic appearance and fire resistance, with each layer optimized for its specific function while contributing to overall fire performance.
3Strength
If additional finishes or false ceilings are installed to improve appearance and protection, then aesthetic and mechanical requirements are met, but installation cost and complexity increase
Solution Approach 1:
The invention merges the protective function and decorative function into the external coating system itself, eliminating the need for separate false ceilings or additional protective covers. The multi-layer coating structure (fibreglass wool core, binder, aluminium sheet, and outer decorative layer) simultaneously provides mechanical protection, air tightness, and aesthetic finish as an integrated unit.
Solution Approach 2:
The external coating system is designed to perform multiple functions simultaneously: structural reinforcement (mechanical resistance), air tightness (aluminium layer), vapour barrier, and decorative finish (outer layer), making it a universal solution that replaces multiple separate components and simplifies installation.
4Ease of operation
If the duct is installed in visible position without additional protection, then installation simplicity is maintained, but perforation resistance is insufficient
Solution Approach 1:
The invention uses a composite external coating structure with multiple layers including a fibreglass wool core, binder layer, aluminium sheet, and an outer reinforcement layer (such as painted fibreglass mesh or rigid decorative panels) that provides enhanced perforation resistance while maintaining installation simplicity as a single integrated unit.
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 reduces installation costs and complexity, enhances mechanical rigidity, and ensures better fire resistance and aesthetics, allowing for visible ducts that meet decorative and functional demands without additional finishes or false ceilings.
Implementation Method 1
a first laminated element formed from a sheet of aluminium applied directly onto the external face of the panel core, and a second laminated element, applied to the former, formed from a sheet of woven fibreglass, which provides the panel with a high level of reinforcement and a final external decorative finish
Implementation Method 2
insulation panel for the construction of hot or cold air distribution ducts, in which the panel is reinforced on the basis of an external covering for the core of the fibreglass wool panel
Implementation Method 3
a first laminated element formed from a sheet of aluminium applied directly onto the external face of the panel core, and a second laminated element, applied to the former
Data Source
Figure 1~2
AI summary
An insulation panel is described for use in the making of hot or cold air distribution ducting, reinforced by means of an outer coating, for use in any space without the need for other operations for the final finish so as to adapt it to the decoration of the surroundings, in which said coating is made from two laminated elements of which the first element, in contact with external surface of the core of the panel, consists of a sheet of aluminium, joined by means of a gluing operation onto the panel core, and the second laminate element completely covers the first and is made up of a reinforcing and protective layer for the former, made from a fibreglass woven base, with a variable texture that provides resistance to punching of holes, with colours that can be chosen in line with the decorative needs of the surroundings, and which guarantees the lack of combustibility of the assembly.