Roller Door System With Pressurized Fluid Hoses
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Solution Overview
Problem
Existing roller door systems for temporary or rapidly deployable structures, such as tents and emergency shelters, are inadequate for sealing openings against smoke, contaminated air, or particulates, as they often require rigid frames and lack efficient sealing mechanisms.
Innovation Solution
A roller door system utilizing a pressurized fluid power system with collapsible hoses and reusable magnetic seals, allowing for easy deployment and sealing of a rollable door without the need for a rigid frame, and enabling quick exit in emergencies by mounting the door externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid door frame is used to seal the opening, then sealing effectiveness is improved, but weight and bulk of the structure increase
Solution Approach 1:
The patent replaces rigid door frames with flexible door frames made from lightweight materials such as aluminum extrusions or tensioned cables. The flexible door frame can be made from a lightweight flexible woven or non-woven sheet material such as PVC or nylon/polyester, minimizing bulk and weight while maintaining sealing effectiveness through magnetic strips or hook and loop material.
Solution Approach 2:
The patent uses composite sealing mechanisms combining magnetic strips with flexible materials. The reusable sealing means comprise magnetic strips that can be repeatedly used and are integrated with the flexible door frame and rollable door materials to achieve effective sealing without rigid structures.
2Device complexity
If manual operation is used to deploy the rollable door, then device complexity is reduced, but speed of deployment and ease of operation deteriorate
Solution Approach 1:
The patent employs a pressurized fluid power system with collapsible hoses to deploy the rollable door. The door closing means comprises a pressurised fluid power system which comprises a plurality of collapsible hoses associated with the rollable door and configured to cause the rollable door to unroll from the roller when expanded by fluid.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated fluid power system. The pressurized fluid power system translates the roller across the doorway automatically, eliminating the need for manual chain or cord operation while maintaining system simplicity through the use of collapsible hoses that integrate with the rollable door.
3Weight of moving object
If the rollable door is made from lightweight flexible material, then portability and storage are improved, but sealing effectiveness against smoke and particulates deteriorates
Solution Approach 1:
The patent combines lightweight flexible materials with magnetic sealing strips. The reusable sealing means for sealing between the lateral margins of the rollable door and the doorway are integrated with the flexible door material, achieving both lightness and effective sealing against smoke and contaminated air.
Solution Approach 2:
The patent uses flexible sheet materials such as PVC or nylon/polyester for the rollable door, which can be made from a lightweight flexible woven or non-woven sheet material. These flexible materials are equipped with magnetic strips along their edges to provide effective sealing while maintaining the benefits of lightweight construction.
4Weight of stationary object
If collapsible hoses are used for fluid power transmission, then weight and bulk are reduced, but system complexity and reliability of fluid transmission increase
Solution Approach 1:
The patent uses collapsible hoses made from flexible materials to transmit fluid power. The pressurised fluid power system comprises a plurality of collapsible hoses associated with the rollable door, which can be deflated for compact storage and inflated for operation, reducing weight and bulk while maintaining functional reliability.
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 system provides a lightweight, compact, and effective sealing solution that maintains an air-tight seal while allowing easy operation and rapid deployment, ensuring safety and security in emergency situations.
Implementation Method 1
the door closing means comprises a pressurised fluid power system which comprises a plurality of collapsible hoses associated with the rollable door and configured to cause the rollable door to unroll from the roller when expanded by fluid
Implementation Method 2
reusable sealing means for sealing between the lateral margins of the rollable door and the doorway
Data Source
AI summary
A roller door system (100) particularly for opening and closing a doorway (120) defined in the wall of a lightweight structure (110) such as a marquee, hangar, field hospital, emergency shelter and the like. The door system comprises a rollable door (150) secured, in use, along one edge of the doorway (152); a roller (140) for rolling and unrolling the rollable door about the roller; an opening mechanism and a closing mechanism for controlling the deployment of the rollable door by translating the roller across the doorway; and reusable sealing means (135, 136, 155, 156) for sealing between the lateral margins of the rollable door and the doorway; characterized in that the rollable door comprises a plurality of collapsible hoses (165, 166) connected to a pressurized fluid power system (160, 161, 163) such that in use a positive pressure applied to the fluid power system causes the rollable door to unroll from the roller and controls the deployment of the rollable door.