Fire fighting system for discharging a liquid-gas finely divided mist

In a system for fighting a fire having a source of a liquid, an outlet line, pump means connected to the outlet line for providing a flow of the liquid at a liquid pressure to the outlet line, and spray head means connected to the outlet line for spraying an extinguishing fluid, whereby to fight the fire, the improvement comprising;

• gas means having a connection to the outlet line between the pump and the spray head means for mixing a flow of a gas at a gas pressure with the flow of the liquid to form a flow of the extinguishing fluid,
• wherein the combination of the liquid, the flow of the liquid, the liquid pressure, the gas, the flow of the gas, the gas pressure, the flow of the extinguishing fluid, and the spray head means is such that the extinguishing fluid is sprayed from the spray head means as a finely divided mist, and
• wherein the gas means comprises:
• a source of the gas at the gas pressure;
• and
• liquid tank means, having at least one tank of the liquid and the connection of the gas means to the outlet line, being connected to the source of the gas for the gas pressure first to drive the liquid from the at least one tank through the connection into the outlet line and then provide the flow of the gas.

In a system for fighting a fire having a source of a liquid, an outlet line, pump means connected to the outlet line for providing a flow of the liquid at a liquid pressure to the outlet line, and spray head means connected to the outlet line for spraying an extinguishing fluid, whereby to fight the fire, the improvement comprising;

• gas means having a connection to the outlet line between the pump and the spray head means for mixing a flow of a gas at a gas pressure with the flow of the liquid to form a flow of the extinguishing fluid,
• wherein the combination of the liquid, the flow of the liquid, the liquid pressure, the gas, the flow of the gas, the gas pressure, the flow of the extinguishing fluid, and the spray head means is such that the extinguishing fluid is sprayed from the spray head means as a finely divided mist,
• wherein the gas means comprise compressed-gas bottles connected in parallel for providing an initial pressure and then lower pressures for the gas pressure, and
• wherein the gas means further comprise:
• liquid tank means, having at least one tank of the liquid and the connection to the outlet line, being connected to the compressed-gas bottles for the gas pressure first to drive the liquid from the at least one tank through the connection into the outlet line and then provide the flow of the gas.

In a system for fighting a fire having a source of a liquid, an outlet line, pump means connected to the outlet line for providing a flow of the liquid at a liquid pressure to the outlet line, and spray head means connected to the outlet line for spraying an extinguishing fluid, whereby to fight the fire, the improvement comprising;

• gas means having a connection to the outlet line between the pump and the spray head means for mixing a flow of a gas at a gas pressure with the flow of the liquid to form a flow of the extinguishing fluid,
• wherein the combination of the liquid, the flow of the liquid, the liquid pressure, the gas, the flow of the gas, the gas pressure, the flow of the extinguishing fluid, and the spray head means is such that the extinguishing fluid is sprayed from the spray head means as a finely divided mist,
• wherein the liquid pressure is from 50 to 200 bar,
• wherein the liquid and gas pressures are substantially the same,
• wherein the gas means comprise compressed-gas bottles connected in parallel for providing an initial pressure and then lower pressures for gas pressure, and
• wherein the gas means further comprise:
• liquid tank means, having at least one tank of the liquid and the connection to the outlet line, being connected to the compressed-gas bottles for the gas pressure first to drive the liquid from the at least one tank through the connection into the outlet line and then provide the flow of the gas.