Closable Soffit Vent Assembly for Ember and Debris Protection
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Solution Overview
Problem
Conventional ventilation systems in commercial and residential structures are vulnerable to the entry of burning embers, ashes, water, and debris during wildfires and hurricanes, leading to property damage and loss due to insufficient airflow management and protection.
Innovation Solution
A closable ventilation vent assembly featuring a rigid frame, moveable slider, and metal screen, which can be aligned to maximize or minimize airflow, and includes visual contrast for easy identification of open or closed positions, allowing for remote operation and enhanced protection against external hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ventilation systems are installed to ensure sufficient airflow, then ventilation effectiveness is improved, but vulnerability to burning embers, water, and debris entry increases
Solution Approach 1:
The patent implements a moveable slider that can dynamically change the vent opening between open and closed positions. This dynamic mechanism allows the system to adapt to different conditions: open during normal weather for ventilation, and closed during wildfires or hurricanes to prevent harmful substance entry, thus resolving the contradiction between ventilation effectiveness and vulnerability to harmful factors
Solution Approach 2:
The patent changes the operational parameter of the vent from fixed open to variable (open/closed) state. By introducing a moveable slider that controls the opening parameter, the system can adjust airflow quantity based on external conditions, maintaining high ventilation effectiveness when safe and preventing harmful substance entry when necessary
2Object-affected harmful factors
If metal screens are added to ventilation vents to prevent ember and pest intrusion, then protection capability is improved, but airflow restriction increases
Solution Approach 1:
The patent combines metal screens with a moveable slider mechanism. The screens provide continuous protection against embers and pests, while the slider dynamically controls airflow quantity. This combination allows the system to maintain both protection capability and adjustable airflow, resolving the contradiction between prevention and ventilation productivity
3Productivity
If ventilation vents remain permanently open to maximize airflow, then ventilation efficiency is improved, but ability to prevent property damage during emergencies decreases
Solution Approach 1:
The patent implements a moveable slider that enables the vent to transition between permanently open (maximizing ventilation efficiency) and closed (preventing property damage) states. This dynamic control mechanism resolves the contradiction by allowing optimal ventilation during normal conditions and complete protection during emergencies
Solution Approach 2:
The patent enables preliminary closing of the vent before harmful substances can cause damage. By providing a moveable slider that can be actuated to close the opening, the system takes preliminary protective action during wildfires or hurricanes, preventing property damage before it occurs while maintaining high ventilation efficiency during normal operation
4Difficulty of detecting and measuring
If visual indicators are added to show open/closed positions, then ease of assessment is improved, but device complexity increases
Solution Approach 1:
The patent uses color changes on the moveable slider to indicate its position. Different colors or color patterns on the slider provide clear visual indicators of whether the vent is open or closed, improving ease of assessment by emergency personnel while adding minimal complexity through simple color coding rather than complex indicator systems
Data Source
AI summary
A ventilation assembly with closable vent openings is described primarily for use on the soffit of a building. A slider that is differently and contrastingly colored relative to a frame and having an actuator tab is provided within the frame wherein the vent opening can be opened or closed by sliding the slider between two positions by way of the actuator tab.