Self-sealing multi-segment retractable fire curtain
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Solution Overview
Problem
Existing retractable smoke/fire curtain systems face issues with smoke and fire seepage through connection seams, such as zippered or releasably attached interfaces between adjacent curtain segments, and lack synchronous extension and retraction of multiple curtain segments.
Innovation Solution
A multi-curtain assembly with edge fasteners like zippers and overlap fasteners using hook/loop or magnetic mechanisms, along with a synchronizing mechanism to ensure synchronized operation of barrel assemblies, which aligns and securely attaches adjacent curtain segments to mask the seam and prevent smoke and fire passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If zippered or releasably attached interfaces are used to connect adjacent curtain segments, then the curtain segments can be automatically connected and disconnected during deployment and retraction, but fire and smoke can seep through the connection seams
Solution Approach 1:
The patent introduces an intermediary sealing mechanism (overlap fastener with hook and loop fasteners or magnets) that mediates between the edge fastener (zipper) and the curtain segments. This intermediary component covers and seals the seam created by the edge fastener, preventing fire and smoke seepage while allowing the zipper to perform its connection function.
Solution Approach 2:
The patent divides the fastening function into two separate segmented components: an edge fastener (zipper) for connecting adjacent curtain segment edges, and an overlap fastener (hook and loop or magnets) for sealing the connection seam. This segmentation allows each component to perform its specific function optimally without compromising the other.
2Adaptability or versatility
If multiple curtain segments are used to cover large openings or change orientations, then the curtain can adapt to different opening sizes and configurations, but connection seams between segments create pathways for fire and smoke
Solution Approach 1:
The overlap fastener acts as an intermediary sealing layer at the interface between multiple curtain segments, preventing fire and smoke from passing through the connection seams while allowing the segments to maintain their adaptive connection for different opening configurations.
Solution Approach 2:
The patent adds an additional dimensional layer (the overlap region with overlap fastener) on top of the basic edge connection (edge fastener). This extra dimension provides the sealing function without interfering with the adaptability of the multi-segment configuration.
3Ease of operation
If separate motor operators are used for each curtain segment to enable synchronous extension and retraction, then precise synchronized control is achieved, but the system complexity increases
Solution Approach 1:
The patent merges the driving functions of multiple curtain segments by mechanically coupling the barrel assemblies through a synchronizing mechanism. This allows a single motor operator to drive multiple segments synchronously, combining what would otherwise require separate motors into a unified drive system.
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 effectively prevents smoke and fire seepage by automatically connecting and disconnecting curtain segments, ensuring synchronous operation and secure attachment, thereby enhancing the fire and smoke blocking capabilities of the curtain system.
Implementation Method 1
an overlap fastener of hook and loop or magnetic fasteners
Implementation Method 2
an overlap fastener of hook and loop or magnetic fasteners
Data Source
AI summary
A multi-curtain assembly includes: first and second curtain segments, each having a leading edge and side edge; an edge fastener having first and second fastener portions proximate the side edge of the first and second curtain segments, respectively, the first fastener portion of the first curtain segment being connectable to the second fastener portion of the second curtain segment to produce a seam as the curtain segments are moved to their closed positions; a motor driving one or more of the barrel assemblies; a synchronizing mechanism synchronizing the barrel assemblies. An overlap fastener, arranged proximate edges of the curtain segments in an overlap region, has aligning portions that align as the side edges are brought into alignment by the edge fastener, to mask at least one side of the fastener seam as the fastener portions are connected to each other.