Classifications

• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
  • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
  • A62C3/0278—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires by creating zones devoid of flammable material
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C2/00—Fire prevention or containment
  • A62C2/06—Physical fire-barriers
  • A62C2/24—Operating or controlling mechanisms
  • A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C99/00—Subject matter not provided for in other groups of this subclass
  • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
  • A62C99/0045—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using solid substances, e.g. sand, ashes; using substances forming a crust
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/10—Means for stopping flow from or in pipes or hoses
  • F16L55/1026—Fire protection devices
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
  • A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/10—Means for stopping flow from or in pipes or hoses
  • F16L55/1018—Pivoting closing devices

Definitions

• the invention relates to fire protection products.
• the subject of the invention belongs to section A - human necessities, class A62 - life-saving; fire-fighting, subclass A62C - fire-fighting, group A62C 3/00 - fire prevention, containment or extinguishing specially adapted for particular objects or places, and group A62C 4/00 - flame traps allowing passage of gas but not of flame or explosion wave, or subgroup A62C 4/04 - in flues or chimneys
• the technical problem solved by the present invention relates to the construction of a non-mechanical fire damper with two closing rings which has no moving parts that are manually or motor-driven, and which has a fire resistance above 90 minutes to prevent the spread of fire through air conditioning and ventilation systems, according to fire prevention laws, regulations and norms.
• a non-mechanical fire damper with two closing rings is installed at the points of passage of ventilation tubes through fire walls and ceilings that separate the building into separate fire compartments.
• the new technical solution of the present invention arose from the lack, on the market, of adequate non-mechanical products for fire protection of ventilation ducts of kitchen hoods according to the valid fire safety standards.
• the essence of the invention is a non-mechanical fire damper with two closing rings.
• the non-mechanical fire damper with two closing rings has a housing, a fire protection assembly and a mounting bracket.
• the fire protection assembly has two plastic tubes. On each tube is placed a closing ring with swivel wings covered with non-combustible cloth and expanding strips, and tightened by tension springs, on plastic tubes.
• the closing rings are mounted on plastic tubes in a way that the swivel wings in the fire protection assembly face each other so that the swivel wings of one closing ring enter between the swivel wings of the other closing ring.
• the non-mechanical fire damper with two closing rings works on the principle of material properties at high temperatures, i e. the expansion of parts of the fire protection assembly which is located in the damper housing.
• the fire protection assembly When the temperature in the ventilation duct rises above 80°C, the fire protection assembly is activated so that the plastic tubes soften and deform, while the tension springs push the swivel wings of both closing rings which eject the plastic tubes out of the damper and close the damper interior. At the same time, the expanding material and expanding strips, under the influence of high temperature, expand and fill the inside of the damper.
• a non-mechanical fire damper with two closing rings is placed in small-diameter ventilation ducts for protection against fire transmission.
• Figure 1 shows upper housing - front view
• Figure 2 shows lower housing - front view
• Figure 3 shows upper housing - top view
• Figure 4 shows upper plastic tube - front view
• Figure 5 shows lower plastic tube - front view
• Figure 6 shows upper plastic tube - top view
• Figure 7 shows closing ring with open swivel wings - front view
• Figure 8 shows closing ring with open swivel wings - top view
• Figure 9 shows closing ring with closed swivel wings - top view
• Figure 10 shows closing ring with open swivel wings in cross section X - X from
• Figure 11 shows enlarged detail E of the swivel wing in cross section from Fig.10
• Figure 12 shows closing ring with swivel wings on the upper plastic tube - front view
• Figure 13 shows closing ring with swivel wings on the lower plastic tube - front view
• Figure 14 shows closing rings with open swivel wings on the upper and lower plastic tubes placed opposite each other - front view
• Figure 15 shows closing rings with swivel wings on the upper and lower plastic tubes from Fig.14 covered with non-combustible cloth - front view
• Figure 16 shows closing rings with swivel wings on the upper and lower plastic tubes from Fig.15 tightened by tension springs - front view
• Figure 17 shows fire protection assembly - front view
• Figure 18 shows fire protection assembly in housing of the non-mechanical fire damper with two closing rings with plastic spacer, partial vertical cross-section - front view
• Figure 19 shows non-mechanical fire damper with two closing rings with plastic spacer between the upper and lower housing - front view
• Figure 20 shows non-mechanical fire damper with two closing rings with mounting brackets - front view
• Figure 21 shows non-mechanical fire damper with two closing rings from Fig.20 with mounting brackets - top view
• Non-mechanical fire damper with two closing rings comprises housing A, fire protection assembly B and mounting bracket C
• Housing A is made of galvanized steel sheet. It consists of two equal parts, namely the upper housing 1 with the wider part 2 and the lower housing 3 with the wider part 4, Figs.1 , 2 and 3.
• Fire protection assembly B Fig.17, consists of an upper plastic tube 6 and a lower plastic tube 8 , closing rings 10, a non-combustible cloth 16, tension springs 17 and expanding strips 18.
• Plastic tubes 6 and 8 are the same size made of thermally unstable plastic material.
• the fire protection assembly B has two plastic tubes: an upper plastic tube 6 with an expanded end 7, Fig.4 and Fig.6, and a lower plastic tube 8 with an expanded end 9, Fig.5 and Fig.6.
• the expanded end 7 of the upper plastic tube 6 and the expanded end 9 of the lower plastic tube 8 are curved towards the outer diameter of the damper.
• Closing ring 10 Figs.7, 8, 9 and 10, is made of galvanized sheet metal.
• the closing ring has a rim 11 with swivel wings 12 in the shape of a triangle.
• the swivel wings 12 are connected to the rim 11 via connections 13.
• the swivel wings 12 are perpendicular to the rim 11.
• supports 14 for tension springs 17 are provided in the middle of the swivel wings 12.
• a self-adhesive expanding material 15 is glued, Figs.10 and 11.
• the fire protection assembly B has two closing rings 10.
• Non-combustible cloth 16 is a fabric made of glass fibers with a silicone coating.
• Tension springs 17 are spiral in shape and are made of steel wire.
• Expanding strips 18 are made of a material that expands under a certain temperature and takes a much larger volume.
• the closing rings 10 with the rims 11 are pulled on the upper plastic tube 6, up to the expanded end 7, Fig.12, and on the lower plastic tube 8, up to the expanded end 9, Fig.13, whereby the swivel wings 12 with its inner surface, to which the self- adhesive expanding material 15 is glued, lean on plastic tubes 6 and 8.
• the plastic tubes are joined on a groove - tongue principle.
• the swivel wings 12 in the fire protection assembly B face each other so that the swivel wings 12 of one closing ring enter between the swivel wings of the other closing ring, Fig.14.
• the non-combustible cloth 16 is placed over the swivel wings 12 and the rims 11, Fig.15.
• tension springs 17 are placed on both closing rings 10, so that the tension springs 17 rest on the supports 14 of the swivel wings 12, Fig.16. In this way the tension springs 17 keep the swivel wings 12 under constant pressure on the plastic tubes 6 and 8.
• the fire protection assembly B is then, between and on the sides of the tension springs 17, wrapped with expanding strips 18, Fig.17.
• Fire protection assembly B from Fig.17. is then inserted into the wider part 2 of the upper housing 1 and the wider part 4 of the lower housing 3 so that the upper housing 1 sits on the expanded end 7 of the upper plastic tube 6 and the lower housing 3 sits on the expanded end 9 of the lower plastic tube 8.
• the plastic spacer 5 which is in a shape of the capital letter T is with one part inserted into the space between the upper housing 1 and the lower housing 3, and with the other part it covers a part of the outer surface of the wider part 2 of the upper housing 1 and the wider part 4 of the lower housing 3, Figs.18. and 19.
• brackets C are attached, Figs.20 and 21, for mounting on built-in elements.
• the brackets C are connected to the upper housing 1 and the lower housing 3 via batten 19 by a pop rivets 20, and are fastened to the built-in element with screws 21.
• the non-mechanical fire damper with two closing rings automatically closes the air flow in the supply and exhaust ducts of ventilation and air conditioning in the event of a fire.
• the tension springs 17 start to act, which due to the reduced resistance of the plastic tubes 6 and 8, push the swivel wings 12 of the closing rings 10 towards the inside of the damper.
• tension springs 17 and swivel wings 12 deformed upper plastic tube 6 and lower plastic tube 8 are ejected from the damper each to its side, and the swivel wings 12 close the passage through the damper.
• a further increase in temperature activates the expanding material 15 on the inside of the swivel wings 12 and the expanding strips 18 on the outside of the swivel wings 12 and with their increased volume they fill the entire interior of the damper and close all openings through which the fire could pass, and in this way prevent fire transmission from one sector to another.
• brackets C are attached by means of which a non-mechanical fire damper with two closing rings is mounted on the built-in elements.
• a non-mechanical fire damper with two closing rings is installed in small-diameter ventilation ducts, especially for kitchen hoods.
• a non-mechanical fire damper with two closing rings is used for small-diameter ventilation ducts for the purpose of preventing the transmission of fire from one fire sector to another.
• the non-mechanical fire damper with two closing rings complies with the fire laws and regulations for installation in ventilation ducts for hoods

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• Engineering & Computer Science (AREA)
• Public Health (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Health & Medical Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Ecology (AREA)
• Forests & Forestry (AREA)
• Biodiversity & Conservation Biology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Duct Arrangements (AREA)
• Air-Flow Control Members (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=71728753

Family Applications (1)

Country Status (3)

Family Cites Families (3)

• 2019
  • 2019-08-06 HR HRP20191419AA patent/HRPK20191419B3/hr active IP Right Grant
• 2020
  • 2020-06-19 WO PCT/HR2020/000005 patent/WO2021024002A1/en unknown
  • 2020-06-19 EP EP20743212.1A patent/EP4010087A1/de active Pending

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