Reclosable Flap Ventilation for Electrical Panel Fire Safety
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Solution Overview
Problem
Existing solutions for preventing fire spread in electrical panels, such as flame retardant additives and inerting gases, are costly, difficult to produce, and pose safety risks, while chemical flame retardants only delay flame propagation without stopping it, and known ventilation devices require power and special molds.
Innovation Solution
A ventilation device with a reclosable flap module that uses a natural 'chimney effect' to dissipate heat and reduce oxygen levels inside the panel, employing a thermoplastic sheet with a metal cover and 'plastic memory' to automatically close the flap and stop air flow when heat is detected, eliminating the need for flame retardants and special molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flame retardant additives or inerting gases are used to prevent fire spread, then fire safety is improved, but production costs increase and safety risks are introduced
Solution Approach 1:
The invention extracts and eliminates the need for flame retardant additives and inerting gases by using a mechanical ventilation control system. The reclosable flaps physically control air flow without requiring chemical substances, thereby removing the harmful factors associated with costly materials and safety risks while maintaining fire prevention effectiveness.
Solution Approach 2:
The ventilation device uses reclosable flaps that automatically respond to fire conditions without requiring external control systems or additional safety equipment. The flaps close in response to heat or manual activation, and the system self-regulates air flow to prevent fire spread, making the system self-sufficient and eliminating dependency on expensive flame retardant materials.
2Reliability
If chemical flame retardant substances are used, then flame propagation is delayed, but fire cannot be stopped and may spread in unmonitored environments
Solution Approach 1:
The invention removes reliance on chemical flame retardants that only delay combustion. Instead, it uses reclosable flaps to physically block air supply, actively stopping fire propagation by removing oxygen. This mechanical approach provides definitive fire containment rather than merely delaying flame spread.
Solution Approach 2:
By closing the reclosable flaps, the system creates an oxygen-deprived environment inside the electrical panel, effectively establishing an inert atmosphere that prevents fire spread. This achieves fire containment through physical isolation rather than chemical inhibition.
3Temperature
If continuous ventilation is maintained to dissipate heat, then cooling effect is improved, but oxygen supply feeds and spreads fire
Solution Approach 1:
The ventilation system transitions from static continuous opening to dynamic controllable state. The reclosable flaps allow the system to adapt between open (cooling) and closed (fire containment) states based on fire risk, enabling intelligent balance between heat dissipation and fire prevention without compromising either function.
Solution Approach 2:
The system incorporates feedback mechanisms where the state of ventilation is adjusted based on fire conditions. When fire is detected or suspected, the flaps close to cut off oxygen supply, and when normal operation is confirmed, ventilation resumes for heat dissipation. This feedback control resolves the contradiction between cooling and fire prevention.
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
Effectively prevents fire spread by reducing oxygen levels and does not require electrical power or special molds, reducing production costs and ensuring safety without the drawbacks of traditional solutions.
Implementation Method 1
a reclosable flap (13), which allows to obtain a closure of the panel in case of an excess of heat
Implementation Method 2
uses a natural 'chimney effect' to dissipate heat and reduce oxygen levels inside the panel
Data Source
Figure 1~2
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AI summary
A ventilation device for electrical panels, comprising a box-like metallic base (10), which is placed on top of an electrical panel and which has at least one lower opening (11) through which flows an air or heat flow (F) coming from said electrical panel, and at least one sheet or laminar element (12), preferably made of plastic material, placed above said box-like metallic base (10); a flap (13) is obtained in at least one portion of said laminar element (12), so that at least one portion of the perimeter of said flap (13) is made in one piece with said laminar element (12) and constitutes a linear fold (16) of said laminar element (12), suitable to allow said flap (13) raising and lowering with respect to said laminar element (12) for opening and closing a corresponding upper opening (15) of the laminar element (12) which is defined by said flap (13).