Classifications

• • 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
  • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
  • F16L5/02—Sealing
  • F16L5/04—Sealing to form a firebreak device

Definitions

• the present invention relates to a fire and smoke block for use in a barrier penetrating member such as for example, a pipe which fits through a building floor or ceiling or wall.
• the present invention relates to a fire and smoke block for use with a barrier penetrating member which is very easy to install and which is very efficient in operation.
• the fire and smoke block of the present invention comprises a rigid collar which is fittable over and lockable on the penetrating member and collar backing means which is made from intumescent material that expands and seals the passage around the barrier penetrating member when subject to fire heat.
• Figure 1 is an exploded perspective view of one end of a pipe extending out of a passage through a building floor to receive a fire and smoke block according to a preferred embodiment of the present invention.
• Figure 2 is a sectional view through the barrier and pipe of Figure 1 when fully assembled with fire and smoke blocks to either side of the barrier according to the preferred embodiment shown in Figure 1.
• Figure 3 is an enlarged sectional view of the arrangement shown in Figure 2 under fire conditions .
• Figure 4 is a perspective view of a fire and smoke block slightly modified from that shown in Figures 1-3.
• Figure 5 is a sectional view of a duct fitted through a floor fitted with a fire and smoke block according to a further preferred embodiment of the present invention.
• Figure 6 is a top view of the arrangement shown in Figure 5.
• Figure 1 shows a building barrier 1.
• This barrier could be a wall, a floor or a ceiling, i.e. any type of partition separating one area of the building from another.
• Barrier 1 includes a passage 3 which receives a barrier penetrating member which in the example shown in Figure 1, is in the form of a pipe 5. Passage 3 allows pipe 5 to extend completely through the barrier from one building area to the next .
• Passage 3 provides a very easy flow path for smoke and fire between building areas. It is therefore very important to seal the passage off as a fire and smoke flow area. This is achieved using a fire and smoke block made in accordance with the present invention.
• the fire and smoke block comprises a collar 7 and a collar backing 17 which fit over the pipe on each side of barrier 1.
• Collar 7 is in the form of a rigid non-combustible plate-like member made from materials such as lightweight spring steel or the like.
• This plate-like member has different regions comprising a main flat body portion 9 surrounding a center opening 12 which is bordered by tongue portions 13 of the plate.
• a peripheral skirt 11 Surrounding the main body portion 9 is a peripheral skirt 11 which is angled or flared relative to the main body of the plate. The flaring of the peripheral skirt adds substantially to the strength of the collar making it very resistant to any bending forces applied to the collar.
• skirt 11 acts as a trap or cover for the collar backing 17.
• This collar backing is made from an intumescent material which expands when subjected to heat such as that generated by fire.
• intumescent materials are well known to those skilled in this particular art. They can have many different constitutions of different types of materials. However, a common trait of all intumescent materials is that they expand extremely significantly and very rapidly when subjected to excessive heat. Furthermore, they will withstand direct fire for extended lengths of time.
• intumescent materials have the capacity to expand 35 fold in a very short period of time when subjected to the types of heat generated by flames from a fire.
• the tongues 15 on each side of the collars act as collar locks. More particularly the diameter of opening
• each collar 12 in each collar is slightly less that the outside diameter of pipe 5.
• each of the collars can be pushed one way onto the pipe.
• the tongues of the collars resist sliding in the opposite direction and therefore once the collars are pushed to the Figure 2 position they will hold that position. This in turn holds the intumescent collar backing directly over the mouth of passage 3 to either side of the barrier.
• the clamp like gripping action of the tongue is generally sufficient to not only hold the collars in position but in addition sufficient to support the weight of the pipe itself as a suspension system for the pipe passing through the barrier.
• Figure 4 shows a slightly modified collar 7A again having gripping tongues, i.e. tongues 13A, which clamp onto the pipe.
• a screw member 14 goes through one of the tongues to bite onto the pipe body to further secure the gripping action between the collar and the pipe.
• the expansion factor of the intumescent material is very significant. Accordingly, only a small amount of the material provided for example in the convoluted cross-sectional shaping of the backing shown in the drawings is required to produce the much increased form 17A of the expanded intumescent material.
• the description above relates to the penetrating member as being a pipe.
• the same concept of using a fire and smoke block is also usable with other penetrating members such as for example ducts or even cables fitting through a building barrier such as a wall or a floor.
• Figures 5 and 6 in fact show a fire and smoke block generally indicated at 25 used with a duct 23 in a passage 22 of a barrier 21.
• the block comprises an L-shaped collar 27 secured by fastening screws to the duct.
• a backing or lining of intumescent material 29 attaches to the collar.
• the intumescent material has small hook shaped ends which lock onto the collar to keep the collar and the intumescent material together with one another.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Building Environments (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (3)

Family

ID=4167145

Family Applications (1)

Country Status (7)

Cited By (1)

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Family Cites Families (13)

• 2000
  • 2000-09-19 CA CA002319876A patent/CA2319876A1/en not_active Abandoned
• 2001
  • 2001-09-19 EP EP01973885A patent/EP1319146A2/en not_active Withdrawn
  • 2001-09-19 US US10/380,876 patent/US20040168398A1/en not_active Abandoned
  • 2001-09-19 AU AU2001293549A patent/AU2001293549A1/en not_active Abandoned
  • 2001-09-19 PL PL01361178A patent/PL361178A1/xx unknown
  • 2001-09-19 CN CNB018176542A patent/CN1296647C/zh not_active Expired - Fee Related
  • 2001-09-19 WO PCT/CA2001/001318 patent/WO2002025158A2/en not_active Application Discontinuation

Non-Patent Citations (1)

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