Fire Suppression Nozzle Radial Spray C6 Foam Compliance
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Solution Overview
Problem
Conventional fire suppression nozzles are unable to effectively spray C6-based film forming foam solutions while meeting the drain time and foam expansion criteria of UL 162 and FM 5130 standards, limiting their compliance and effectiveness in fire protection systems.
Innovation Solution
A fire suppression nozzle designed to spray a variety of film forming foam solutions, including C6-based ones, with a radial spray pattern and a low discharge angle, featuring a deflector portion with projecting members and aeration holes to facilitate foam formation and distribution, ensuring compliance with UL and FM standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional nozzles are used to spray C6-based film forming foam solutions, then the environmental safety is improved (no PFAS degradation), but the compliance with UL 162 and FM 5130 standards deteriorates (fail to meet drain time and foam expansion criteria)
Solution Approach 1:
The nozzle design modifies critical parameters including the deflector angle (15-45 degrees), orifice diameter (0.125-0.5 inches), and passage geometry to optimize spray patterns for C6-based foam solutions. These parameter adjustments enable the nozzle to achieve both environmental safety and compliance with UL 162 and FM 5130 standards for drain time and foam expansion ratios
Solution Approach 2:
The nozzle is divided into distinct functional components: a body portion with aeration holes, a deflector portion with multiple spray outlets, and a base portion. This segmentation allows each component to be optimized independently for its specific function while working together to achieve both environmental compliance and standard certification
2Object-affected harmful factors
If the nozzle sprays fire suppression fluid in a radial pattern with low discharge angle, then the contact with aircraft is minimized, but the spray coverage area is reduced
Solution Approach 1:
The nozzle utilizes a low discharge angle (5-30 degrees from horizontal) to spray fire suppression fluid primarily in the horizontal plane rather than vertically upward. This dimensional shift in spray direction minimizes contact with aircraft while still achieving effective coverage of the deck area through radial dispersion
Solution Approach 2:
The deflector portion is designed to dynamically redirect the fire suppression fluid flow at controlled angles, creating a radial spray pattern that expands coverage area while maintaining low discharge angles. The multiple spray outlets and deflector geometry work together to distribute fluid dynamically across the protected area
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 nozzle effectively delivers fire suppression fluids in a radial pattern with low discharge angle, minimizing contact with aircraft and maintaining operation under heavy loads, thus providing comprehensive fire protection while adhering to industry standards.
Implementation Method 1
aeration holes to facilitate foam formation and expansion
Data Source
AI summary
A fire suppression nozzle assembly includes a spray-type nozzle for spraying a fire suppression fluid. The spray-type nozzle includes a body portion defining a passage extending longitudinally through the body portion for conveying the fire suppression fluid. The spray-type nozzle also includes a deflector portion coupled to the body portion and configured to spray the fire suppression fluid onto a fire suppression target area using a radial spray pattern.