A low-pressure mist fire extinguishing device for generating a mist stream as a result of a two-phase flow generated from a gas and a liquid A pressure tank is filled with the liquid and the gas and closed with a valve assembly. A mixer for generating the two-phase flow of the liquid and the gas has an inlet section and the outlet section. At least one outlet nozzle is connected at an outlet side of the valve assembly. In the recommended vertical position of the device, the mixer is located in a space of the tank which is filled with the gas, above a surface of the liquid.

A fire suppressant storage device (20) comprises: a tank (22) having a first port (40), a second port (70), and an interior (32) for storing fire suppressant. A discharge assembly (46) is mounted to the first port and comprises a discharge valve (48) and a charge conduit (50) at least partially within the interior. The discharge conduit has an interior and an exterior. A liquid level measurement assembly (82; 200; 250; 300; 400) is mounted to the second port and comprises: a tube (100) at least partially within the tank interior and having an interior sealed relative to the surrounding tank interior and an exterior; a float (120; 220) surrounding the tube; and a member (122; 222; 252; 302) axially movable within the tube interior. One of the float and the member comprises an upper magnet (130; 230) and a lower magnet (132; 232). The other of the float and the member magnetically cooperates with the upper magnet and the lower magnet to relatively axially trap the member to the float.

A fire suppressant storage device (20) comprises: a tank (22) having a first port (40), a second port (70), and an interior (32) for storing fire suppressant. A discharge assembly (46) is mounted to the first port and comprises: a discharge valve (48); and a discharge conduit (50). The discharge conduit is at least partially within the interior and has an interior and an exterior. A liquid level measurement assembly is mounted to the second port and comprises: a tube (100) at least partially within the interior and having: an exterior and an interior sealed relative to the surrounding tank interior. A float (120) surrounds the tube and has one or more magnets (130) and having a range of motion. A plurality of magnetic field sensors (152, 154) are along a carrier (150) within the tube interior. The carrier extends from a proximal end to a distal end. The plurality of magnetic field sensors (152, 154) comprise: a first plurality of one dimensional sensors (152); and at least two three-dimensional sensors distally of the first plurality (154)

An assembly for a fire extinguisher system includes a fire extinguisher fitting that extends into a fire extinguisher container and a fill adapter. The fitting defines a fitting bore through which a connection portion of a pressure monitoring device at least partially extends and a fitting flange that is disposed about the fitting and is disposed parallel to a flange of the pressure monitoring device. The fill adapter includes an adapter housing and an adapter shaft. The adapter housing is arranged to be disposed about the pressure monitoring device. The adapter shaft that at least partially extends through the adapter housing. The adapter shaft is arranged to engage a monitoring housing of the pressure monitoring device.

Systems and methods for filling and pressurizing a container with liquid suppressant and nitrogen gas. A pressurized receiving container of nitrogen gas is provided at a predetermined gas pressure and liquid suppressant is added to the pressurized receiving container. The predetermined gas pressure provides a sufficient amount of nitrogen to saturate the added liquid suppressant and provide an operative head space pressure within the receiving container without the need for mechanized mixing.

Systems and methods for filling and pressurizing a container with liquid suppressant and nitrogen gas. A pressurized receiving container of nitrogen gas is provided at a predetermined gas pressure and liquid suppressant is added to the pressurized receiving container. The predetermined gas pressure provides a sufficient amount of nitrogen to saturate the added liquid suppressant and provide an operative head space pressure within the receiving container without the need for mechanized mixing.

A fire suppression system includes at least one spray nozzle for expelling a fire suppression agent into a space; a first container at least partially filled with a first fire suppression agent. The first fire suppression agent within the first container has a first pressure. A conduit extends from the first container to at least one spray nozzle. A second container is at least partially filled with a second fire suppression agent and is arranged in fluid communication with the conduit. The second fire suppression agent within the second container has a second pressure less than the first pressure. A mixture of the first fire suppression agent and the second fire suppression agent is movable through the conduit to the at least one spray nozzle via the first pressure.

A fire extinguisher is shown and described. The fire extinguisher may include a housing, a vessel positioned within the housing, the vessel retaining a fire suppression agent therein, and a discharge port positioned in the housing and operatively coupled with the vessel, where the fire suppression agent is capable of being expelled from the discharge port. The fire extinguisher may include an electrical connector positioned on the housing, the electrical connector capable of operatively securing to an electrical outlet, where the electrical connector is rotatable relative to the housing.

A fire extinguisher is shown and described. The fire extinguisher may include a housing, a vessel positioned within the housing, the vessel retaining a fire suppression agent therein, and a discharge port positioned in the housing and operatively coupled with the vessel, where the fire suppression agent is capable of being expelled from the discharge port. The fire extinguisher may include an electrical connector positioned on the housing, the electrical connector capable of operatively securing to an electrical outlet, where the electrical connector is rotatable relative to the housing.

The present invention is a fire suppression apparatus for mitigating a battery fire and the effects of a thermal event within a battery pack. The system comprises a fire suppressant apparatus that is incorporated into the storage modules of the lithium ion batteries. Each storage module includes a container filled with a fire suppressant that is pressurized with a compressed gas.