Slush Firefighting Cannon for Long-Range Spray
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional firefighting systems using liquid water and fire retardants often experience reduced effectiveness due to unwanted atomization when sprayed at high energy, leading to shorter reach and volume, which can hinder fire suppression.
Innovation Solution
A mobile firefighting system that employs a slush cannon with multiple reducing nozzles and a multistage tank system to chill and mix water with fire retardants into a semi-frozen slush, allowing for high-pressure projection of a solid-liquid mixture that maintains greater distance and accuracy, and includes features like continuous tracks and winches for all-terrain capability and autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high energy input is used to spray liquid firefighting fluid, then the spray reaches greater distance, but the fluid undergoes unwanted atomization breaking into tiny drops reducing effectiveness
Solution Approach 1:
The patent changes the physical state parameter of the firefighting fluid from liquid to semi-frozen slush. This phase change allows the fluid to maintain structural integrity at high velocities, preventing atomization while achieving greater spray distance. The slush composition (partially frozen water with fire retardant) maintains coherence under high pressure, resolving the contradiction between reach and effectiveness.
2Ease of operation
If liquid firefighting fluid is sprayed at ambient temperature, then the system operation is simple, but the reach and volume effectiveness is reduced due to atomization
Solution Approach 1:
The patent utilizes phase transition by chilling water to create a semi-frozen slush mixture. This phase change from liquid to semi-solid state enables the firefighting fluid to resist breaking into droplets during high-velocity spray, thereby increasing both reach and volume effectiveness while maintaining operational feasibility through automated chilling systems.
3Speed
If a slush cannon system with multistage tank system is used to project semi-frozen slush, then the spray reaches greater distance with maintained effectiveness, but the device complexity increases
Solution Approach 1:
The patent divides the firefighting system into multiple functional segments: separate tanks for water and fire retardant, independent chilling units for each tank, sequential pumping stages, and a slush cannon assembly. This segmentation allows each component to be optimized independently and simplifies maintenance while achieving the complex function of projecting semi-frozen slush at long distances.
Solution Approach 2:
The system performs preliminary actions by pre-chilling water and pre-mixing the slush composition before the actual firefighting operation. The multistage tank system prepares the semi-frozen slush in advance, ensuring optimal temperature and consistency are achieved before projection, which enables long-distance effective spraying without requiring complex real-time adjustments during operation.
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 system effectively projects a slush of frozen fire retardant and water farther than traditional liquid-based systems, enhancing fire suppression and protection while maintaining stability and accessibility in challenging terrains through advanced nozzle design and autonomous operation.
Implementation Method 1
A chilling element in the tank chills the mixture to a semi-frozen slush, where the semi-frozen slush includes solid pieces in a liquid portion
Implementation Method 2
The high-pressure pump projects the semi-frozen slush from the cannon barrel (i.e., through the nozzles)
Data Source
AI summary
A mobile firefighting system includes a water cannon enabled for spraying slush on or near a fire. The slush includes solid material (e.g., ice, solid fire retardant) that is projected farther than a liquid could be projected using high pressure. The slush has enhanced fire suppression and fire protection characteristics compared to a liquid. Multiple tanks add enhanced slush chilling capability (e.g., through sequenced chilling) and provide redundant backup systems. A mobile cannon includes multiple reducing nozzles that can be aimed by a rotating base and hydraulic cylinder (for raising and lowering). Continuous tracks and winches contribute to all-terrain capabilities.