Automatic fire extinguishing system with gaseous and dry powder fire suppression agents

摘要

An automatic fire extinguishing system includes a canister having a central axis, an outlet port disposed on the canister, a dip tube disposed in the canister about the central axis and in partial fluid communication with the canister and coupled to the outlet port, a propellant gas mixture disposed within the canister, a gaseous fire suppression agent disposed in the canister and a dry powder fire suppression agent disposed in the canister.

主权项

1. An automatic fire extinguishing system, comprising:
a canister having a central axis; an outlet port disposed on the canister; a dip tube longitudinally disposed in the canister about the central axis and in partial fluid communication with the canister, the dip tube including a first end that is coupled to the outlet port, a plurality of side holes, and a directionally opposite second end that includes an inlet port with one or more openings; a propellant gas mixture disposed within the canister; a gaseous fire suppression agent disposed in the canister and configured to form into a two phase solution within the canister; a dry powder fire suppression agent disposed in the dip tube; an internal ring disposed inside the dip tube that covers the plurality of side holes in a non-activated state, wherein the plurality of side holes configured to reduce a time taken to discharge the gaseous fire suppression agent from the canister and to maintain an enhanced mass flow rate of a gaseous extinguishing agent while the gaseous fire suppression agent is forming into the two phase solution within the canister; an electric actuator that is mechanically coupled to a central rod, wherein the electric actuator is configured to selectively move the central rod against the internal ring to open the plurality of side holes and displace a semi-permeable membrane for full fluid communication between the canister and the dip tube in the activated state; and the semi-permeable membrane disposed at the second end and configured to cover the one or more openings.