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US 7,841,419 B2Granted
Extinguishing fires and suppressing explosions
AssigneeKidde IP Holdings Limited
InventorsChristian Manthey, Hans-Joachim Herzog, Robert George Dunster
Life of this patent
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AssigneeKidde IP Holdings Limited
InventorsChristian Manthey, Hans-Joachim Herzog, Robert George Dunster
Estimating the term…
A fire extinguishing or explosion suppression device comprises a chamber and a nozzle. The nozzle defines a discharge pathway from the chamber. The chamber has an inlet for pressure-driven introduction of a liquid into the chamber. The chamber is shaped so that a gas contained in the chamber before the introduction of the liquid is entrained into the liquid during the pressure driven introduction of the liquid such that a mixture of the liquid and the gas is discharged through the nozzle to create a mist for extinguishing a fire or suppression of an explosion. After the gas has been discharged from the chamber, the nozzle produces a spray having a core of larger liquid droplets with the core being surrounded by smaller liquid droplets.
A fire extinguishing or explosion suppression device comprising, a chamber and a nozzle defining a discharge pathway from the chamber, the chamber having an inlet for pressure-driven introduction of a liquid into the chamber, the chamber being shaped so that a gas already contained in the chamber before the introduction of the liquid is commenced is entrained into the liquid during the pressure driven introduction of the liquid such that a mixture of the liquid and the gas is discharged through the nozzle to create a mist for extinguishing a fire or suppression of an explosion, wherein the chamber is defined by a surface having a convex surface portion and a concave surface portion, each of the surface portions having the shape of a segment of a sphere, the convex surface portion and the inlet being positioned so that the liquid is directed onto the convex surface portion when the liquid is introduced into the chamber through the inlet, whereby to increase turbulence within the chamber, and wherein the nozzle is located at the concave surface portion and the convex surface portion directs liquid towards the nozzle.
A method of extinguishing a fire or suppressing an explosion, comprising providing a chamber containing a gas, forcing a liquid into the chamber, the chamber being shaped so that the gas becomes entrained within the liquid as the liquid is forced into the chamber to produce a mixture of the gas and the liquid, discharging the mixture of the gas and the liquid through a nozzle to produce a mist for extinguishing a fire or suppressing an explosion, wherein the chamber is defined by a surface having a convex surface portion and a concave surface portion, each of the surface portions having the shape of a segment of a sphere, the convex surface portion and the inlet being positioned so that the liquid is directed onto the convex surface portion when the liquid is introduced into the chamber through the inlet, whereby to increase turbulence within the chamber, and wherein the nozzle is located at the concave surface portion and the convex surface portion directs liquid towards the nozzle.
Dependencies are inferred from the claim text.