The object of this invention is a ventilation duct unit (1), which comprises an inlet (2), an outlet (3), a flow channel (4), which extends from the inlet to the outlet, and which is delimited by a wall (5) between the inlet and the outlet, a closing part (6), which is arranged into the flow channel, and which in open position enables flow in the flow channel, and in closed position prevents flow in the flow channel, closing member (12), which as a response to detecting fire, sets the closing part (6) to a predetermined position, and an actuator (8), which moves the closing part (6) between open and closed state in order to achieve flow defined for the actuator (8) in the flow channel. In order to utilize the ventilation duct unit for controlling fire situations and sound dampening, the ventilation duct unit further comprises insulation material (14), part of which is fireproof, and which surrounds the wall (5) of the flow channel and isolates the surrounded part of the wall of the flow channel from its surroundings, and holes (18) arranged in the surrounded part of the wall of the flow channel (4), which dampen sound by leading the medium flowing in the flow channel to be in contact with insulation material (14).

The object of this invention is a ventilation duct unit (1), which comprises an inlet (2), an outlet (3), a flow channel (4), which extends from the inlet to the outlet, and which is delimited by a wall (5) between the inlet and the outlet, a closing part (6), which is arranged into the flow channel, and which in open position enables flow in the flow channel, and in closed position prevents flow in the flow channel, closing member (12), which as a response to detecting fire, sets the closing part (6) to a predetermined position, and an actuator (8), which moves the closing part (6) between open and closed state in order to achieve flow defined for the actuator (8) in the flow channel. In order to utilize the ventilation duct unit for controlling fire situations and sound dampening, the ventilation duct unit further comprises insulation material (14), part of which is fireproof, and which surrounds the wall (5) of the flow channel and isolates the surrounded part of the wall of the flow channel from its surroundings, and holes (18) arranged in the surrounded part of the wall of the flow channel (4), which dampen sound by leading the medium flowing in the flow channel to be in contact with insulation material (14).

An aircraft includes an airframe defining a first enclosed space, an engine bay disposed within the first enclosed space, and a cooling system. The engine bay includes a firebox defining a second enclosed space and an engine disposed at least partially within the second enclosed space. The cooling system is configured to selectively fluidly couple the first enclosed space with the second enclosed space.

A heat activated sealing apparatus for closing and locking a plurality of ventilation damper blades of a ventilation framework includes a fire detection assembly for detecting a fire condition and an actuator. A damper closure assembly includes an axle in communication with the actuator of the fire detection assembly and operatively coupled to the plurality of dampers of the ventilation framework, the axle being selectively rotatable between a start configuration at which the plurality of ventilation dampers are at the open configuration and a deployed configuration at which the plurality of ventilation dampers are at the closed configuration. The damper closure assembly includes a locking assembly movable between an unlocked configuration allowing rotatable movement of the axle and a locked configuration not allowing rotatable movement of the axle. The locking assembly is movable to the locked configuration only when exposed to a predetermined amount of heat from the fire condition.

An explosion isolation device is disclosed. The explosion isolation device may comprise a conduit having a flap configured to rotate between an open position and a closed position within the conduit, and a holding mechanism configured to hold the flap in the open position. The holding mechanism may be configured to release the flap in the event of an explosion and the flap may be configured to rotate into the closed position after it is released. The device may include a sensor and an actuator configured to actuate the holding mechanism when an explosion is sensed. The conduit may be vertical.

An explosion isolation device is disclosed. The explosion isolation device may comprise a conduit having a flap configured to rotate between an open position and a closed position within the conduit, and a holding mechanism configured to hold the flap in the open position. The holding mechanism may be configured to release the flap in the event of an explosion and the flap may be configured to rotate into the closed position after it is released. The device may include a sensor and an actuator configured to actuate the holding mechanism when an explosion is sensed. The conduit may be vertical.

A system that deploys attic vent covers when there is the immediate threat of fire, as well as methods and device relating thereto, is disclosed. This system includes varied cover types and deployment methods to utilize with a range of attic vents found suitable for use in residential and commercial construction.

A system that deploys attic vent covers when there is the immediate threat of fire, as well as methods and device relating thereto, is disclosed. This system includes varied cover types and deployment methods to utilize with a range of attic vents found suitable for use in residential and commercial construction.

A fireproof shutter includes a frame having an opening through which a transport rail for movement of a transport vehicle passes, the opening being divided into an upper opening and a lower opening based on the transport rail, an upper door mounted on the frame and configured to open and close the upper opening, and a lower door mounted on the frame and configured to open and close the lower opening.

A firestop device includes a collar to be mounted to a surface at wall penetration of a plastic pipe. The collar includes a first collar half and a second collar half, having corresponding end portions which are connected to each other. A fire resistant foldable cap is circumferentially connected to the collar for closing off the penetration location when the pipe is collapsed. In case of a fire an actuation assembly moves the fire resistant foldable cap over the penetration location to close it off. The collar is a fold-out collar in which said corresponding ends of the first and second collar halves are hingedly connected to each other to be moveable from a folded state, in which the second collar half substantially overlaps the first collar half, to a folded out state, in which the first collar half and the second collar half form a ring shaped collar.