GB1222870A - Flexible fire resistant air duct - Google Patents
Flexible fire resistant air ductInfo
- Publication number
- GB1222870A GB1222870A GB5548168A GB5548168A GB1222870A GB 1222870 A GB1222870 A GB 1222870A GB 5548168 A GB5548168 A GB 5548168A GB 5548168 A GB5548168 A GB 5548168A GB 1222870 A GB1222870 A GB 1222870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foil
- plastics
- strip
- duct
- steel foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0218—Flexible soft ducts, e.g. ducts made of permeable textiles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/145—Arrangements for the insulation of pipes or pipe systems providing fire-resistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/30—Details or features not otherwise provided for comprising fireproof material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Duct Arrangements (AREA)
Abstract
1,222,870. Making composite tubes; skelping; corrugating. CRYO-THERM Inc. 22 Nov., 1968, No. 55481/68. Headings B3A and B3E. [Also in Division F2] A fire-resistant heating and air-conditioning duct is made by forming inner and outer concentrically arranged tubular members 29 and 30 from foils with an insulating material filling the annulus defined therebetween, at least one said member being formed of a metal foil, e.g. steel foil, having a melting point of at least 2000‹ F. Both foils constituting the inner and outer tubular members are preferably of steel foil having a thickness in the range of 0À0005 to 0À005 inch and advantageously between 0À001 and 0À003 inch. However, the inner foil tube may be an aluminium, plastics or impregnated paper foil. The insulating material may be a foamed or expanded plastics such as foamed urethane or polyvinyl chloride or expansible styrene beads. Alternatively, the insulant may be glass fibre batting. As shown, the duct may be formed by passing steel foil strips through skelping formers 14 and 20, and seam welding the lapped edges of the respective strips by means of a pulsed copper wheel electrode 17 and a spring-biased shoe electrode 25 respectively, a foaming plastics mix being applied by nozzle 22. Instead of welding the lapped edges of the respective strips, mechanical lock seams 33, 34, Fig. 5 (not shown) may be provided. In another embodiment, Figs. 2 and 3 (not shown), glass batting 37 and steel foil strip 44 are simultaneously wound over a helicallywound inner foil tube having a crimped or welded helical seam, the outer strip being welded by wheel 39. The walls of the duct may be circumferentially corrugated, Fig. 8 (not shown), by utilizing a foil strip which has been passed through coacting corrugating rollers 45, 46 of respectively convexly and concavelycurved form to impart a curvature to the strip, Fig. 6 (not shown). In a modification, Fig. 6a (not shown), the strip is left with plain margins 51, 52 to facilitate lapwelding or mechanical seam-locking. In the corrugated duct construction of Fig. 8 (not shown), axially-spaced rings 59 of activated charcoal are arranged in the expanded plastics insulation to absorb any smoke which may form in the event of ductoverheating. The uncorrugated duct of Fig. 9 is similarly provided with smoke interceptors and the outer surface of the foil may be coated with tin, plastics or zinc. In the embodiment of Fig. 10 (not shown), the foamed plastics insulant is provided with a helically-coiled spring reinforcement 62.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5548168A GB1222870A (en) | 1968-11-22 | 1968-11-22 | Flexible fire resistant air duct |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5548168A GB1222870A (en) | 1968-11-22 | 1968-11-22 | Flexible fire resistant air duct |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1222870A true GB1222870A (en) | 1971-02-17 |
Family
ID=10474049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5548168A Expired GB1222870A (en) | 1968-11-22 | 1968-11-22 | Flexible fire resistant air duct |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1222870A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2128709A (en) * | 1982-10-16 | 1984-05-02 | C J Cawte | Drainage pipes |
GB2222653A (en) * | 1988-09-07 | 1990-03-14 | Ti Corporate Services | Hollow tubular structures of fibre reinforced plastics material and method for their production |
WO2008012148A3 (en) * | 2006-07-24 | 2008-04-10 | Siemens Ag | People carrier with a firewall |
-
1968
- 1968-11-22 GB GB5548168A patent/GB1222870A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2128709A (en) * | 1982-10-16 | 1984-05-02 | C J Cawte | Drainage pipes |
GB2222653A (en) * | 1988-09-07 | 1990-03-14 | Ti Corporate Services | Hollow tubular structures of fibre reinforced plastics material and method for their production |
WO2008012148A3 (en) * | 2006-07-24 | 2008-04-10 | Siemens Ag | People carrier with a firewall |
CN101495344B (en) * | 2006-07-24 | 2011-03-09 | 西门子公司 | Vehicle for conveying passengers with a firewall |
US7959220B2 (en) | 2006-07-24 | 2011-06-14 | Siemens Aktiengesellschaft | Vehicle for conveying passengers with a firewall |
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