Pivotable Ventilation Training Frame with Disposable Supports
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Solution Overview
Problem
Existing vertical ventilation training systems are inefficient due to waste generation, time consumption in replacing sheets, and safety hazards for firefighters, particularly inexperienced ones when handling and cutting ventilation holes on sloped roofs.
Innovation Solution
A pivotable vertical ventilation training apparatus with disposable support members that can be cut to allow the frame to pivot into an open position, reducing waste and enabling faster setup, featuring a reusable design and visual cutting guide for appropriate hole sizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replaceable 4x8 sheets are used for ventilation training, then the training can be performed on simulated roofs, but waste and disposal problems occur due to high frequency of training
Solution Approach 1:
The training system is divided into reusable frame structures and disposable support members. The frame (made of aluminum or wood) is segmented into modular components that can be repeatedly used, while only the support members (2x4 lumber pieces) are discarded after a single use. This segmentation allows the expensive structural components to be preserved while only consuming minimal disposable materials.
Solution Approach 2:
The support members are designed as cheap, short-living disposable components made from 2x4 lumber. These are the only parts that are discarded after use, replacing the entire 4x8 sheet approach with much smaller, cheaper disposable elements. The frames and other structural components are reused across multiple training sessions, significantly reducing overall waste.
2Manufacturing precision
If entire 4x8 sheets are used for each training scenario, then ventilation hole cutting can be practiced, but time is wasted replacing sheets between scenarios
Solution Approach 1:
The system separates the permanent frame structure from the temporary support members. The frame remains in place on the simulated roof, while only the small support members are removed and replaced. This eliminates the time-consuming process of replacing entire 4x8 sheets while maintaining the ability to practice ventilation hole cutting at various positions.
Solution Approach 2:
The frame structures are pre-assembled and permanently mounted on the simulated roof before training begins. This preliminary setup eliminates the need to assemble or replace large sheet structures between training scenarios. Only the small support members need to be swapped, which is much faster than replacing entire sheets.
3Ease of operation
If inexperienced firefighters carry 4x8 sheets up sloped roofs, then replacement material can be positioned, but safety hazards increase
Solution Approach 1:
The support members are small, lightweight 2x4 lumber pieces that are easy for inexperienced firefighters to carry and maneuver on sloped roofs. They replace the need to handle large, cumbersome 4x8 sheets, significantly reducing the physical strain and safety risks associated with working on inclined surfaces.
Solution Approach 2:
The system breaks down the large 4x8 sheet replacement task into small, manageable support member components. These segmented, lightweight pieces can be easily carried up sloped roofs by individual firefighters without requiring cooperative lifting or special equipment, making the operation safe and simple for trainees.
4Reliability
If firefighters cut ventilation holes in the middle of 4x8 sheets, then ventilation operation can be practiced, but the entire sheet must be replaced afterward
Solution Approach 1:
The training system uses small support members instead of large sheets, allowing the ventilation hole to be cut in the support member while leaving the rest of the frame and other support members intact. This segmentation enables localized replacement rather than whole-sheet replacement, maintaining training scenario completion while improving efficiency.
Solution Approach 2:
Only the specific support member that is cut for the ventilation hole is discarded, while the frame structure and other support members are recovered and reused for subsequent training scenarios. This selective discarding approach maintains training effectiveness while maximizing resource utilization and reducing waste.
Data Source
AI summary
The present disclosure is directed to a simulated roof vertical ventilation training apparatus configured to be pivotably attached to a simulated roof. In some examples, the vertical ventilation training apparatus includes a frame pivotably mounted to an exposed rafter of the simulated roof. The frame is moveable between an open position and a closed position. The edges of the frame are configured to engage with at least one disposable support member to maintain the frame in a closed position. The disposable support member is configured to be cut by a user with a hand tool to allow pivot of the frame into the open position.