An emitter system capable of discharging an atomized liquid-gas stream or a liquid stream which atomizes into a spray has a source of pressurized gas and one or more sources of pressurized liquids. Flow of gas and liquid to an emitter is controlled by valves, and the emitter can be used to discharge either the atomized liquid-gas stream or the liquid stream. The emitter system may be used for fire suppression.

A fire engine including a vehicle frame, a liquid nitrogen storage tank, a liquid nitrogen conveying pipeline, a gasification device, a plurality of electric valves, a water pipe adapter, a liquid nitrogen spray gun, and a mixed spray gun. The liquid nitrogen conveying pipeline includes a first pipeline and a second pipeline. The first pipeline connects the lower part of the liquid nitrogen storage tank, the gasification device, and the upper part of the liquid nitrogen storage tank sequentially in that order. The second pipeline connects the liquid nitrogen storage tank, an input end of the liquid nitrogen spray gun, and a first input end of the mixed spray gun. The mixed spray gun includes a first input end, a second input end, a liquid nitrogen nozzle, and a spray pipe. The spray pipe includes a contraction section, an expansion section, and an acceleration section.

A fire engine including a vehicle frame, a liquid nitrogen storage tank, a liquid nitrogen conveying pipeline, a gasification device, a plurality of electric valves, a water pipe adapter, a liquid nitrogen spray gun, and a mixed spray gun. The liquid nitrogen conveying pipeline includes a first pipeline and a second pipeline. The first pipeline connects the lower part of the liquid nitrogen storage tank, the gasification device, and the upper part of the liquid nitrogen storage tank sequentially in that order. The second pipeline connects the liquid nitrogen storage tank, an input end of the liquid nitrogen spray gun, and a first input end of the mixed spray gun. The mixed spray gun includes a first input end, a second input end, a liquid nitrogen nozzle, and a spray pipe. The spray pipe includes a contraction section, an expansion section, and an acceleration section.

The invention relates to a firefighting mist cannon (1) having a firefighting agent connection (20) for connecting to a pressurized firefighting agent supply, a housing (7) that can be pivoted about a vertical axis (Z) and a horizontal axis (Y) relative to the firefighting agent connection (20) and having a first, inlet-side housing opening (19) and a second, outlet-side housing opening (22), a flow generator arranged in the housing (7), which is designed to provide an air flow (L) from the first housing opening (19) in the direction of the second housing opening (22), and a firefighting nozzle arrangement (25) associated to the second housing opening (22), fluidically connected to the firefighting agent connection (20) and designed to output firefighting agent in such a way that the firefighting agent is captured by the air flow (L). It is proposed for the firefighting nozzle arrangement (25) to have at least one central tube (27), which is arranged within the housing (7) and oriented in an output direction (W), and which is fluidically connected to a horizontally and vertically pivotable distributor device (37) by means of a supply line section (44), wherein the supply line section (44) is designed with a harmonic curvature.

The invention relates to a firefighting mist cannon (1) having a firefighting agent connection (20) for connecting to a pressurized firefighting agent supply, a housing (7) that can be pivoted about a vertical axis (Z) and a horizontal axis (Y) relative to the firefighting agent connection (20) and having a first, inlet-side housing opening (19) and a second, outlet-side housing opening (22), a flow generator arranged in the housing (7), which is designed to provide an air flow (L) from the first housing opening (19) in the direction of the second housing opening (22), and a firefighting nozzle arrangement (25) associated to the second housing opening (22), fluidically connected to the firefighting agent connection (20) and designed to output firefighting agent in such a way that the firefighting agent is captured by the air flow (L). It is proposed for the firefighting nozzle arrangement (25) to have at least one central tube (27), which is arranged within the housing (7) and oriented in an output direction (W), and which is fluidically connected to a horizontally and vertically pivotable distributor device (37) by means of a supply line section (44), wherein the supply line section (44) is designed with a harmonic curvature.

A lance, in particular for jointly dispensing a pressurized fluid and an additive for penetrating walls, includes a lance body, a handle arrangement, multiple channels and actuator arrangements interacting therewith, a nozzle arrangement as well as at least one container for the additive. The actuator arrangements selectively control the fluid being conducted in the first channel, the additive being conducted in the second channel, and the ambient air being conducted in the third channel to a first nozzle body. The third channel forms a line connection between the ambient air and a mixing chamber of the first nozzle body. The second actuator arrangement with its second actuator directly acts on the third channel and indirectly controls the admixing of the additive via the second channel into the mixing chamber.

A lance, in particular for jointly dispensing a pressurized fluid and an additive for penetrating walls, includes a lance body, a handle arrangement, multiple channels and actuator arrangements interacting therewith, a nozzle arrangement as well as at least one container for the additive. The actuator arrangements selectively control the fluid being conducted in the first channel, the additive being conducted in the second channel, and the ambient air being conducted in the third channel to a first nozzle body. The third channel forms a line connection between the ambient air and a mixing chamber of the first nozzle body. The second actuator arrangement with its second actuator directly acts on the third channel and indirectly controls the admixing of the additive via the second channel into the mixing chamber.