Fire Damper Partition Sealing via Spacer-Mounted Intumescent Seals
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Solution Overview
Problem
Existing fire dampers with angle bar stops increase hydraulic resistance, noise, and manufacturing costs, while also being a source of contamination and requiring additional construction elements, which complicates their operation and maintenance.
Innovation Solution
The use of fireproof spacers with swelling and O-shaped silicon seals extending into the fire damper frame provides a sealing solution that eliminates the need for angle bar stops, reducing hydraulic resistance, noise, and manufacturing costs, while ensuring tightness, flame resistance, and smoke tightness during fires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If angle bar stops are used to seal the partition, then sealing function is improved, but hydraulic resistance increases
Solution Approach 1:
The patent removes the angle bar stops from the fire damper structure and replaces them with seals mounted on fireproof spacers. This extraction of the stopper function eliminates the source of hydraulic resistance while maintaining the sealing capability through the spacer-mounted seals that extend into the frame.
Solution Approach 2:
The invention changes the physical parameters of the sealing system by using flexible seals on spacers instead of rigid angle bars. The seals can deform to maintain contact with the frame, providing effective sealing without creating the turbulent flow and pressure loss associated with rigid stoppers.
2Reliability
If angle bar stops are used to seal the partition, then sealing function is improved, but noise increases
Solution Approach 1:
The patent removes the angle bar stops that generate noise during partition movement and sealing. The replacement spacer-mounted seal system operates silently as the flexible seals make smooth contact with the frame without the mechanical impact and friction noise of rigid stoppers.
3Reliability
If angle bar stops are used to seal the partition, then sealing function is improved, but manufacturing costs increase
Solution Approach 1:
The patent eliminates the complex angle bar stopper assemblies and their associated welding and anticorrosive protection requirements. The simplified spacer-mounted seal system uses fewer materials and less complex assembly processes, reducing manufacturing costs while achieving the same sealing function.
Solution Approach 2:
The invention replaces expensive, complex metal stopper structures with simpler, more economical seal elements mounted on spacers. These seals are easier and cheaper to manufacture and install, reducing overall production costs.
4Reliability
If angle bar stops are used to seal the partition, then sealing function is improved, but device complexity increases
Solution Approach 1:
The patent removes the complex angle bar stopper structures and their mounting hardware from the fire damper design. The replacement system uses simple fireproof spacers with mounted seals, significantly reducing the number and complexity of construction elements while maintaining effective sealing.
5Reliability
If angle bar stops are used to seal the partition, then sealing function is improved, but contamination increases
Solution Approach 1:
The patent removes the angle bar stops that generate contamination through wear debris and friction particles. The spacer-mounted seal system produces minimal contamination as the flexible seals operate smoothly without the mechanical degradation associated with rigid stopper contact.
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
This solution enables fast and smooth fire separation, reduces energy consumption, and meets fire resistance standards by eliminating the need for welding and anticorrosive protection, ensuring the fire damper maintains tightness and insulating properties for 120 minutes without the drawbacks of traditional stopper systems.
Implementation Method 1
seals (2) having a swelling effect
Implementation Method 2
seal (6) having an O-shaped cross-section, preferably a silicon seal
Data Source
Figure 1
Figure 2~9
Figure 10~11
AI summary
Cut-off firewall of a rectangular cross-section comprising a partition wherein seals (2,6) are placed on fireproof spacers (3,4) such that the seals extend adjacently the partition beyond a line of the firewall frame (17). Dimensions of the movable cut-off partition (5) are smaller than internal dimensions of the firewall frame (17).