VENTILATION-DUCT FIRE DAMPER AND METHOD

The fire damper comprises a frame (10) which includes a cylindrical inner section (10a) and a flange-shaped outer section (10b) which has an inner surface and an outer surface. The fire damper further comprises a valve (20), which includes a closing cone (21) and a counter cone (22) as well as a flo...

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Bibliographische Detailangaben
Hauptverfasser:	HAGSTRÖM, KIM, HEINO, PEKKA, VUORIO, JARNO, PARKKILA, RAIMO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING ENGINEERING ELEMENTS AND UNITS FIRE-FIGHTING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES JOINTS OR FITTINGS FOR PIPES LIFE-SAVING LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES RANGES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	The fire damper comprises a frame (10) which includes a cylindrical inner section (10a) and a flange-shaped outer section (10b) which has an inner surface and an outer surface. The fire damper further comprises a valve (20), which includes a closing cone (21) and a counter cone (22) as well as a flow duct (26) between them, and a trigger mechanism (60) with which the flow duct (26) is closed in the event of fire. The fire damper additionally comprises a first fire insulating seal (50) which is fastened within an outer section (22b) of the counter cone (22) and a second fire insulating seal (51) which is fastened on the inner surface of the outer section (10b) of the frame (10).