Fire Door Vision Panel Assembly for Precise Rated Installation
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Solution Overview
Problem
Constructing a fire door with a fire-rated vision panel is challenging as it requires precise installation to maintain fire resistance, and existing methods are time-consuming and difficult.
Innovation Solution
A door leaf with a receiving aperture featuring a stepped formation and abutment surfaces, along with a vision panel assembly having spaced window panels and a fire-rated panel, allows for quick and accurate installation of the vision panel within the door leaf, using spacers, intumescent strips, and adhesives for retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fire-rated vision panel is installed in a fire door, then the door allows viewing through while maintaining fire resistance, but the installation process becomes complex and time-consuming
Solution Approach 1:
The receiving aperture is divided into multiple levels with stepped formations, creating distinct seating positions for the vision panel assembly. This segmentation allows for precise positioning and simplified installation by breaking down the complex retention requirement into manageable structural components.
Solution Approach 2:
The door leaf is pre-formed with a receiving aperture that includes stepped formations and abutment surfaces during manufacturing. This preliminary preparation eliminates the need for complex field installation procedures, as the retention structure is already in place to guide and secure the vision panel assembly.
2Adaptability or versatility
If a fire-rated vision panel is installed in a fire door, then the door allows viewing through while maintaining fire resistance, but precise installation is required to maintain fire resistance rating
Solution Approach 1:
The receiving aperture features localized stepped formations with specific abutment surfaces at different levels. These localized structural features provide precise positioning points that guide the vision panel assembly into the correct position, ensuring fire resistance requirements are met through targeted geometric design rather than overall precision.
Solution Approach 2:
The stepped formation with abutment surfaces is designed to automatically position and retain the vision panel assembly during installation. The geometry of the stepped structure itself provides the positioning function, eliminating the need for external alignment tools or complex installation procedures.
3Adaptability or versatility
If a fire-rated vision panel is installed in a fire door, then the door allows viewing through while maintaining fire resistance, but the installation process is time-consuming
Solution Approach 1:
The receiving aperture is pre-formed with stepped formations and abutment surfaces during door manufacturing. This preliminary preparation allows for rapid field installation of the vision panel assembly, as all retention structures are already in place and require no additional assembly steps.
Solution Approach 2:
The vision panel assembly is designed as a separate, pre-assembled unit that can be independently manufactured and then quickly installed into the pre-prepared receiving aperture. This extraction of the vision panel from the door manufacturing process allows for parallel production and rapid final assembly.
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
Facilitates easy and precise installation of a fire-rated vision panel, maintaining fire resistance and providing structural support while ensuring ease of cleaning and maintaining cleanliness, especially in environments like hospitals.
Implementation Method 1
a groove to, in use, receive an intumescent strip
Data Source
AI summary
According to the present disclosure, there is provided vision panel assembly for use in a fire door, comprising first and second window panels having a fire-rated vision panel sandwiched therebetween. Also provided is a door leaf for use in a fire door and a fire door comprising a vision panel assembly and a door leaf. A method of assembling a vision panel assemble, a door leaf and a fire door are also provided.