A admixing system for fire extinguishing systems for producing an extinguishing agent-extinguishing agent additive mixture (premix) by mixing an extinguishing agent additive with an extinguishing agent. The admixing system has a motor that can be driven by a flow of extinguishing agent, an admixing pump connected to the motor for pumping the extinguishing agent additive, an admixing line, and an extinguishing agent additive line, from which the extinguishing agent additive is mixed with the extinguishing agent in the admixing line. The admixing system has a branching line, from which a part of the flow of extinguishing agent can be branched off if the load in the fire extinguishing system only requires a small flow of extinguishing agent. In this manner, the flow of extinguishing agent flowing through the motor is artificially increased so that the motor runs in a higher rotational speed range in which a reliable operation of the motor is ensured (a so-called start-up flow reduction). The admixing system has a motor rotational speed measuring device and a controller, said controller being designed to completely or partly open and/or close the branching valve on the basis of the motor rotational speed measured by the motor rotational speed measuring device.

The invention relates to the field of electrical engineering and fire-fighting, and more particularly to a differential circuit breaker comprising a housing, and a module (12) that contains an aerosol-forming or gas-forming composition. The module (12) projects beyond the housing of the circuit breaker and has, on its projecting portion, a self-combusting heat-sensitive igniter (22) with a trigger temperature that is lower than the trigger temperature of the module (12), the circuit breaker further comprising a heat-sensitive shutdown device (8), a contact group (18) for supplying an external trigger signal, an activation sensor (21), and a button (25) for manually activating an electrical igniter. The technical result consists in increasing the timeliness of an initial fire-extinguishing action and more efficiently impeding the spread of fire in an enclosed space at the same time as breaking an electrical circuit, the device being capable of breaking a circuit in the event of a short circuit or a prolonged overload or current leakage without triggering an aerosol or gas-forming fire-extinguishing system, by operating as a typical differential circuit breaker.

A nitrogen generation system includes a nitrogen generator and a bypass device. The nitrogen generator receives air and outputs nitrogen using the air along a first flow path to an outlet. The bypass device is coupled with an air source and the nitrogen generator. The bypass device controls flow of air from the air source to flow along the first path through the nitrogen generator or along a second path to the outlet based on a pressure condition.

A nitrogen generation system includes a nitrogen generator and a bypass device. The nitrogen generator receives air and outputs nitrogen using the air along a first flow path to an outlet. The bypass device is coupled with an air source and the nitrogen generator. The bypass device controls flow of air from the air source to flow along the first path through the nitrogen generator or along a second path to the outlet based on a pressure condition.

Proposed is a battery fire suppression system with a fire extinguishing agent cooling function, in which a fire extinguishing gas serves as a refrigerant for cooling a fire extinguishing agent and at the same time, the fire extinguishing gas is sprayed into a battery room or a battery module to quickly extinguish a fire in the battery. While allowing the fire extinguishing gas to basically serve as the refrigerant, depending on the amount of combustible materials loaded in the battery room, the shape of battery cells installed inside the battery module, the battery capacity, etc., it is possible to selectively determine whether to allow the fire extinguishing gas to serve only as the refrigerant, or to allow the fire extinguishing gas to be sprayed to the battery module where the fire has occurred to cool the surface of the battery module or directly extinguish the fire in the battery module.

A fire suppressing gas generator includes a housing structure having an inner housing component comprising an array of discharge ports distributed thereon, an outer housing component encapsulating the inner housing component and comprising an array of openings distributed thereon, and spacing structure extending between the inner housing component and the outer housing component to maintain the inner housing component and the outer housing component in a fixed spaced relationship. A fire suppression subsystem within the inner housing includes at least one column of stacked propellant grains each comprising a pressed mixture of sodium azide and iron oxide.

An ice slurry firefighting system includes a water tank for receiving and storing water from a water source. A water pump is connected to the tank and pumps water to a valve. The valve selectively directs the pumped water to one or both of a slurry generation unit and a pump panel. The slurry generation unit includes a condenser, an evaporator, and a compressor that remove heat from water supplied by the tank passing over evaporator coils to produce an ice slurry mixture. The pump panel houses a system controller and a valve tap for engaging a fire hose and nozzle. The system controller operates the pump, the valve, the slurry generation unit, and a ratio control valve to dispense any ratio of water and ice slurry through the hose and nozzle. A generator provides power to the system components.

Invention relates to fire suppressing gas generating devices, especially to a gas outflow management in the fire suppressing gas generating devices. A fire suppressing gas generating device comprising a cylindrical housing (1) having at least one discharge opening (13); a plurality of gas generating grains (2); an ignitor (5) associated with the gas generating grain (2) for ignition of said gas generating grain (2); a filter (6) encompassing the plurality of the gas generating grains (2); and at least one gas discharge channel (7) connected to the discharge opening (13). The gas discharge channel (7) further comprises at least two nozzles (17) opposed to each other creating thrust neutrality of discharged gas.