Embodiments of the present disclosure relate to an air handling unit having a housing that defines an air flow path therethrough, a heat exchanger disposed within the air flow path and configured to flow a working fluid therethrough, and a nozzle configured to deliver a fire suppression agent into the air flow path.

A fire detection device is designed to make hydrogen fires detectable in aviation operations and similar applications, whether it is for the purpose of detecting a fire around an aircraft prior to passenger and crew emergency evacuation, or to identify fires in proximity to airport ground vehicles that utilise hydrogen as a fuel or vehicles that are used for transporting or transforming hydrogen in any transport context. The device can be designed to be non-toxic and safe for use in proximity to humans.

There is described an actuator for a damper comprising an electrical circuit, a cable coupled to the electrical circuit, a lower housing supporting the electrical circuit, and an upper housing coupled to the lower housing. The electrical circuit controls positions of the damper. The cable provides power and control to the electrical circuit. The lower housing includes a first trough and a second trough to provide support for the cable in a first direction. The upper housing includes a first protuberance and a second protuberance to provide support for the cable in a second direction. The first and second protuberances are positioned offset from the first and second troughs of the lower housing.

A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a thermally-actuated damper that includes a body, a valve plate, and a pivot assembly. The valve plate is disposed within the passage of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to constrain the valve plate from moving from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature to thereby allow the biasing system to move the valve plate to the closed position.

A safety cabinet for storing flammable liquids is provided with a flame arresting vent. The flame arresting vent or flame arrestor allows flammable vapors inside the cabinet to leave the cabinet's interior but prevents flame from flowing into the cabinet's interior from outside the cabinet.

Disclosed herein is a fire protection system for an electrical appliance, in accordance with some embodiments. Further, the fire protection system may include a vent door disposed on a front surface of the electrical appliance. Further, the vent door may be configured to provide direct access to an opening of a vent of the electrical appliance. Further, the fire protection system may include a heat sensor thermally coupled to the vent. Further, the heat sensor may be configured to detect a temperature of the vent. Further, the fire protection system may include at least one fire extinguisher configured to dispense a fire retardant within the vent. Further, the fire protection system may include an actuator electrically coupled to each of the heat sensor and the at least one fire extinguisher. Further, the actuator may be configured to activate the at least one fire extinguisher based on the temperature.

A safety cabinet for storing flammable liquids is provided with a flame arresting vent. The flame arresting vent or flame arrestor allows flammable vapors inside the cabinet to leave the cabinet's interior but prevents flame from flowing into the cabinet's interior from outside the cabinet.

This application relates to ventilation systems, more particularly to roof ventilation systems that help to protect buildings against fires. The roof vent has an ember impedance structure that impedes the entry of flames and embers or other floating burning materials while still permitting sufficient air flow to adequately ventilate a building. Several configurations of vents employing baffle members and fire-resistant mesh material are described, which can substantially prevent the ingress of floating embers and flames.

The invention relates to system for suppressing the fire and warning to the occupants are disclosed. The described system includes a thermostat and Fan in an HVAC interface with a residential HVAC system, a receiver operable to receive a signal indicating the presence of a fire or smoke, and a processor in communication with the receiver and in response, sends a signal to the HVAC interface to cause the residential HVAC system to be shut down. In addition the system also includes camera system sending signal to a display unit displaying the floor and room number on the screen, thus warning the occupants the location of the fire.

In one or more arrangements, a system is presented for preventing the spread of fire through a conveyor opening in a fire wall. In one or more arrangements, a fire door system is connected to the fire wall and/or conveyor proximate to the conveyor opening. The fire door system includes a door assembly, a door frame assembly, and an actuator. The door frame assembly is connected to the fire wall, covers portions of the opening below the conveyor and between belts of the conveyor, and forms a door opening above the conveyor. The door assembly is configured to move between a closed position, where door assembly covers the door opening, and an open position, where the door assembly at least partially uncovers the door opening. The actuator is configured to cause the door to be moved to the closed position in response to fire.