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US 2022/0176176 A1Published application
Compressed air foam system with vortex manifold
OwnerDavid G. Mahrtinventor
Life of this patent
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Abstract
A fire suppression system may include a tank and a manifold that may be inside or outside the tank. The tank, when charged, holds a liquid and a gas. The manifold has an inlet coupled to receive a liquid flow from the tank and inlets configured to receive gas flows. The gas flows may be from an upper portion of the liquid tank. An expansion chamber in the manifold receives the liquid flow and the gas flows, which create a liquid-gas vortex or circulation around the expansion chamber that produces foam.
Claims20
A fire suppression system comprising:
- a tank holding a liquid pressurized with a gas;
- and
- a manifold including:
- an expansion chamber;
- a liquid inlet coupled to a first portion of the tank containing the liquid, the liquid inlet directing a liquid flow of the liquid into the expansion chamber;
- a foam outlet from the expansion chamber;
- a first gas inlet connected to a second portion of the tank, the second portion containing the gas, the first gas inlet directing a first gas flow of the gas into the expansion chamber;
- and
- a second gas inlet connected to the second portion of the tank, the second gas inlet directing a second gas flow of the gas into the expansion chamber, the second gas inlet being downstream from the first gas inlet along a direction of the liquid flow, wherein
- the first inlet directs the first gas flow and the second gas inlet directs the second gas flow along a direction of circulation of a liquid gas mixture in the expansion chamber to thereby create in the expansion chamber a liquid-gas vortex that produces foam.
7 more elements
A process for producing fire suppressing foam, the process comprising:
- filling a liquid tank with a solution, the liquid tank having a manifold connect to receive a liquid flow from the liquid tank to an inlet of the manifold;
- attaching a gas source to the tank and the manifold, the gas source pressurizing the liquid tank and directing one or more air flows to the manifold;
- and
- opening an outlet of the manifold causing the liquid flow and the one or more air flows to mix in an expansion chamber between the inlet and the outlet of the manifold to thereby creating the fire suppressing foam.
1 more element
Dependencies are inferred from the claim text.