Closure Valve Device for Pressure-Equalized Door Opening
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Solution Overview
Problem
Existing closing bodies such as doors and windows in escape routes face challenges when there is a pressure difference between the interior and exterior of a room, leading to high door opening forces that can hinder escape, especially in fire situations, and can pose safety risks due to dangerous swinging.
Innovation Solution
A valve device is integrated into the closing body that provides temporary pressure equalization during opening, allowing the door to open without additional mechanical support, and is designed to close automatically once the pressure difference is reduced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a smoke pressure system pressurizes escape route rooms to prevent smoke entry, then fire safety is improved, but the door opening force increases significantly making escape difficult
Solution Approach 1:
The door system is segmented into two functional parts: the main door leaf for complete closure and a separate pressure equalization flap integrated into the valve device. This allows the pressure equalization function to be separated from the main door structure, enabling the door to open easily while maintaining smoke protection when closed
Solution Approach 2:
The pressure equalization flap opens automatically before the main door when the door handle is operated, preliminary equalizing the pressure difference across the door. This preliminary action reduces the pressure difference force that would otherwise oppose door opening, making escape possible without excessive force
2Object-affected harmful factors
If higher pressure is maintained in escape routes to ensure smoke displacement, then smoke protection is improved, but the force required to open doors increases beyond safe limits
Solution Approach 1:
The pressure equalization flap acts as an intermediary element between the pressurized escape route and the adjacent room. When the flap opens, it provides a controlled pressure relief path that mediates the pressure difference, allowing the main door to open without experiencing the full force of the pressure differential while the smoke pressure system continues to operate at effective levels
3Ease of operation
If a valve device is added to provide pressure equalization, then door opening ease is improved, but the device complexity increases
Solution Approach 1:
The pressure equalization flap is designed to operate automatically based on pressure differential and door operation, without requiring external control systems, sensors, or power sources. The flap opens when the door handle is operated and closes automatically when pressure equalizes, making the system self-regulating and minimizing added complexity
Solution Approach 2:
The valve device with pressure equalization flap is integrated into the door assembly itself, combining the smoke protection function and pressure equalization function in a single integrated component rather than adding a separate external system, thereby minimizing the increase in overall device complexity
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
Enables doors and windows to open effortlessly despite pressure differences, ensuring safe and unobstructed escape routes by reducing the force required to open, thus improving fire safety and preventing injuries.
Implementation Method 1
a valve device (28) is provided on the closing body (10), which effects a temporary pressure equalization when opening the closing body (10)
Data Source
AI summary
A closing body allows closing and opening an access opening or a passage of a room in case of a pressure difference between an interior and exterior of the room. A closing fitting set and a door leaf are disclosed, by means of which closing fitting set and door leaf a closing body can be formed. The closing body is in the form of a pivotable door, a pivotable window or a pivotable flap. A valve device is provided on the closing body, which valve device effects a temporary pressure equalization during the opening or closing of the closing body. The valve device is in the form of a valve flap, and a release mechanism is provided, which opens the valve device. A locking fitting is provided for the closing body, and the release mechanism is coupled, for actuation, to the locking fitting of the closing body.