Fire Door Gas Ejection Device for Smoke Leakage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In article transport facilities with fire doors, gaps often form between the fire door and installed objects, allowing smoke and flames to enter upper floors during a fire, and existing solutions like expanding members have a time lag in closing these gaps.
Innovation Solution
A gas ejection device is positioned below the fire door to eject gas horizontally towards the gaps, creating a flow that prevents smoke from rising through the gaps when the fire door is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fire door is closed to prevent fire spread, then fire containment is improved, but gaps form at the edge of the fire door allowing smoke to enter upper floors
Solution Approach 1:
A gas ejection device is introduced as an intermediary element between the fire door and the gaps. The device ejects gas horizontally toward the gaps, creating a protective gas flow that acts as a mediator to prevent smoke from entering the upper floor through the gaps, while not interfering with the fire door's fire containment function
Solution Approach 2:
The invention uses pneumatic principles by employing a gas ejection device that utilizes gas flow dynamics. The device creates a horizontal gas flow directed toward the gaps, leveraging fluid dynamics to generate a protective barrier that prevents smoke infiltration without requiring mechanical movement or complex mechanical structures
2Object-generated harmful factors
If expanding members are used to close gaps at the fire door edge, then smoke prevention is improved, but there is a time lag before the gaps are closed
Solution Approach 1:
The gas ejection device is activated immediately when the fire door closes, performing preliminary action by establishing a protective gas flow barrier before smoke can accumulate or penetrate through the gaps. This eliminates the time lag problem by providing immediate protection rather than waiting for gradual expansion
Solution Approach 2:
The invention replaces the mechanical expanding member system with a pneumatic/gas flow-based system. Instead of relying on mechanical expansion that takes time to occur, the gas ejection device uses controlled gas flow to create an immediate protective barrier, substituting mechanical action with fluid dynamics for faster response
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 gas ejection device effectively prevents smoke from entering upper floors by creating a stronger gas flow than the rising smoke, ensuring better fire containment.
Implementation Method 1
the ejecting portion ejects gas horizontally toward an area directly below a gap formed at an edge of the fire door when the opening is closed by the fire door
Data Source
AI summary
An article transport facility is provided in which, when a fire breaks out on a floor below, smoke etc. can be prevented from entering floors above through an opening. An opening, which a raised and lowered member can move through in a vertical direction, is formed in an intermediate floor portion located between the floor above and the floor below. A fire door for opening and closing the opening is provided. A gas ejection device having an ejecting portion for ejecting gas is provided at a lower position than the fire door. The ejecting portion ejects gas horizontally toward an area directly below a gap formed at an edge of the fire door when the opening is closed by the fire door.