Angled Nozzle Assembly for Uniform CAF Distribution
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Solution Overview
Problem
Existing fire suppression systems using fixed spray nozzles fail to distribute compressed air foam (CAF) without destroying its quality, leading to inadequate fire extinguishment and reflash prevention, especially in difficult-to-access areas and when dealing with biohazards.
Innovation Solution
A fire extinguishing CAF spray device with a nozzle assembly featuring a manifold body and angled outlets that guide CAF into a desirable broadcast pattern, maintaining foam quality and achieving uniform distribution, including a central nozzle and multiple angled nozzles arranged to create specific spray patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If prior art nozzles are used to distribute CAF, then the nozzle structure is simple and easy to manufacture, but the foam quality is destroyed and fire fighting ability is reduced
Solution Approach 1:
The nozzle is divided into multiple independent elements arranged in a specific pattern. Each element consists of a stem and a face portion with specific geometry. This segmentation allows the nozzle to maintain foam quality while achieving uniform distribution, as the multiple small elements work together to distribute CAF without breaking it down into liquid state.
Solution Approach 2:
Different portions of the nozzle have specifically designed geometries to perform different functions. The stem portion has one geometry while the face portion has a different geometry optimized for CAF distribution. This local quality optimization ensures that each part of the nozzle contributes to maintaining foam quality while achieving the desired spray pattern.
2Device complexity
If prior art nozzles are used to distribute CAF, then the device complexity is low, but the distribution uniformity is poor with center area difficult to cover
Solution Approach 1:
The nozzle elements are arranged in an asymmetric pattern rather than a simple symmetric configuration. The specific arrangement of elements with different orientations ensures that the spray pattern covers the entire area including the center region, achieving uniform distribution without requiring complex adjustment mechanisms.
Solution Approach 2:
The nozzle design incorporates elements extending in multiple dimensions with specific angular orientations. This multi-dimensional arrangement of nozzle elements creates a three-dimensional spray pattern that ensures comprehensive coverage including the previously difficult-to-reach center area, transforming a two-dimensional spray problem into a three-dimensional solution.
3Ease of operation
If prior art nozzles are used to deliver CAF, then the system is simple to operate, but the desired rate of flow cannot be delivered while maintaining CAF quality
Solution Approach 1:
The nozzle design incorporates specific geometric parameters including element angles, stem lengths, and face portion dimensions that are optimized to deliver the desired rate of flow while maintaining CAF quality. By carefully selecting and adjusting these geometric parameters, the nozzle achieves both high productivity and foam quality without requiring complex control systems.
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 solution effectively delivers high-quality CAF for fire extinguishment and biohazard control, ensuring even and predictable spray patterns while preventing reflash, and is easily manufacturable.
Implementation Method 1
a fire extinguishing spray nozzle connected to a vertical pipeline
Data Source
AI summary
A fire extinguishing device for the uniform distribution of compressed air foam for fire suppression, connected to a piping network of a CAF system. Multiple nozzles of different types are connected to a single body, set at specific angles both horizontally and vertically. Each nozzle is selected to provide a set discharge spray angle and positioned in the body of the device to provide the proper distribution. The device body has a female thread at the inlet for connection to the CAF system in addition to female outlets at the discharge for connection of spray nozzles. The device may be used to create a 360° spray pattern or a 120° spray pattern depending on the application.