SAFETY CUT-OFF FIRE FLAP WITH LOW AIR RESISTANCE

The safety shutter prevents fire spreading through an air conduit, and comprises a rectangular plate hinging in a housing rectangular on the inside. The internal profile of the housing (1) is widened by a niche (2) in the wall, and into which the plate (3) hinges, flush with the wall in the open pos...

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Bibliographic Details
Main Authors MAREK JIRI ,CS, HAVEL MIROSLAV,CS
Format Patent
LanguageEnglish
Published 12.02.1990
Edition4
Subjects
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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Summary:The safety shutter prevents fire spreading through an air conduit, and comprises a rectangular plate hinging in a housing rectangular on the inside. The internal profile of the housing (1) is widened by a niche (2) in the wall, and into which the plate (3) hinges, flush with the wall in the open position. The plate has a bolt (4) at one end forming a bearing, and situated at the downstream end, its axis being at right angles to the flow direction (10). The length of the plate is greater than the cross-section of the rectangular passage through the housing, measured in the transverse direction. USE/ADVANTAGE - Fire spread prevention shutter in conduit. Simplicity, reliability, and only slightly increases air flow resistance during normal operation.
Bibliography:Application Number: CS19880006627