Combustible concealed space

Patent metadata

Field	Value
Publication number	US-11707641-B2
Application number	US-202016895072-A
Country	US
Kind code	B2
Filing date	Jun 8, 2020
Priority date	Sep 30, 2014
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

Fire protection system and methods for concealed spaces providing for effective fire protection over an effective depth range measuring from a minimum six inches up to a maximum that is greater than thirty-six inches. A combustible concealed space that includes an upper deck and a ceiling deck spaced about a longitudinal axis extending substantially parallel to the ceiling deck with a fire protection system having a firefighting fluid supply pipe and at least one automatic upright sprinkler coupled to the fluid supply pipe and positioned to define an effective depth range that measures from six inches to a maximum of at least sixty inches.

First claim

What is claimed is:

1. A combustible concealed space system, comprising:
an upper deck spaced from a longitudinal axis;
a ceiling deck spaced from the longitudinal axis, a depth range between the upper deck and the ceiling deck in a direction perpendicular to the longitudinal axis is greater than or equal to fifty four inches and less than or equal to eighty four inches, at least one of the upper deck and the ceiling deck comprising unobstructed wood truss construction;
a fluid supply pipe comprising a parallel portion parallel to the longitudinal axis;
an automatic upright sprinkler coupled to the parallel portion of the fluid supply pipe, the sprinkler comprising:
a frame body that receives a fluid from the fluid supply pipe, the frame body comprises an inlet and an outlet defining a passageway extending between the inlet and the outlet to define a discharge coefficient of a nominal K-factor, the passageway and the outlet define one of (i) the nominal K-factor to be 4.2K with a sprinkler to sprinkler spacing greater than 12 feet or (ii) a nominal K-factor of 5.6K with a sprinkler-to-sprinkler spacing of greater than 12 feet;
a seal assembly;
a thermally responsive trigger to support the seal assembly in the outlet; and
a deflector coupled to the frame body and spaced from the outlet.

2. The combustible concealed space system of claim 1 , comprising:
the thermally responsive trigger comprises a glass bulb having a response time index (RTI) of 24 (m-s) 1/2 , and a temperature rating of 200° F.

3. The combustible concealed space system of claim 1 , comprising:
the deflector is a planar member with a central portion axially aligned with the passageway and an outer peripheral portion circumscribed about the central portion.

4. The combustible concealed space system of claim 1 , comprising:
the deflector comprises a plurality of spaced apart tines to define a plurality of open ended slots formed therebetween extending radially inward at equal distance.

5. The combustible concealed space system of claim 1 , comprising:
the upper deck defines a slope relative to the ceiling deck that does not exceed 2:12.

6. The combustible concealed space system of claim 1 , comprising:
the deflector is spaced at a distance from the upper deck ranging from 1 1/12 inches to 4 inches.

7. The combustible concealed space system of claim 1 , comprising:
the fluid supply pipe is made from CPVC.

8. The combustible concealed space system of claim 1 , comprising:
the frame body comprises a pair of frame arms diametrically opposed about the outlet to support the deflector spaced from the outlet.

9. A combustible concealed space system, comprising:
an upper deck spaced from a longitudinal axis;
a ceiling deck spaced from the longitudinal axis, a depth range between the upper deck and the ceiling deck in a direction perpendicular to the longitudinal axis is greater than or equal to fifty four inches and less than or equal to eighty four inches, at least one of the upper deck and the ceiling deck comprising non-combustible insulation-filled wood joist construction;
a fluid supply pipe comprising a parallel portion parallel to the longitudinal axis;
an automatic upright sprinkler coupled to the parallel portion of the fluid supply pipe, the sprinkler comprising:
a frame body that receives a fluid from the fluid supply pipe, the frame body comprises an inlet and an outlet defining a passageway extending between the inlet and the outlet to define a discharge coefficient of a nominal K-factor, the passageway and the outlet define one of (i) the nominal K-factor to be 4.2K with a sprinkler to sprinkler spacing greater than 12 feet or (ii) a nominal K-factor of 5.6K with a sprinkler-to-sprinkler spacing of greater than 12 feet;
a seal assembly;
a thermally responsive trigger to support the seal assembly in the outlet; and
a deflector coupled to the frame body and spaced from the outlet.

10. The combustible concealed space system of claim 9 , comprising:
the thermally responsive trigger comprises a glass bulb having a response time index (RTI) of 24 (m-s) 1/2 , and a temperature rating of 200° F.

11. The combustible concealed space system of claim 9 , comprising:
the deflector is a planar member with a central portion axially aligned with the passageway and an outer peripheral portion circumscribed about the central portion.

12. The combustible concealed space system of claim 9 , comprising: the deflector comprises a plurality of spaced apart tines to define a plurality of open ended slots formed therebetween extending radially inward at equal distance.

13. The combustible concealed space system of claim 9 , comprising:
the upper deck defines a slope relative to the ceiling deck that does not exceed 2:12.

14. The combustible concealed space system of claim 9 , comprising:
the deflector is spaced at a distance from the upper deck ranging from 1 1/12 inches to 4 inches.

15. The combustible concealed space system of claim 9 , comprising:
the fluid supply pipe is made from CPVC.

16. The combustible concealed space system of claim 9 , comprising:
the frame body comprises a pair of frame arms diametrically opposed about the outlet to support the deflector spaced from the outlet.

17. A combustible concealed space system, comprising:
an upper deck spaced from a longitudinal axis;
a ceiling deck spaced from the longitudinal axis, a depth range between the upper deck and the ceiling deck in a direction perpendicular to the longitudinal axis is greater than or equal to fifty four inches and less than or equal to eighty four inches, at least one of the upper deck and the ceiling deck comprising unobstructed bar joint construction;
a fluid supply pipe comprising a parallel portion parallel to the longitudinal axis;
an automatic upright sprinkler coupled to the parallel portion of the fluid supply pipe, the sprinkler comprising:
a frame body that receives a fluid from the fluid supply pipe, the frame body comprises an inlet and an outlet defining a passageway extending between the inlet and the outlet to define a discharge coefficient of a nominal K-factor, the passageway and the outlet define one of (i) the nominal K-factor to be 4.2K with a sprinkler to sprinkler spacing greater than 12 feet or (ii) a nominal K-factor of 5.6K with a sprinkler-to-sprinkler spacing of greater than 12 feet;
a seal assembly;
a thermally responsive trigger to support the seal assembly in the outlet; and

a deflector coupled to the frame body and spaced from the outlet.

18. The combustible concealed space system of claim 17 , comprising:
the thermally responsive trigger comprises a glass bulb having a response time index (RTI) of 24 (m-s) 1/2 , and a temperature rating of 200° F.

19. The combustible concealed space system of claim 17 , comprising:
the deflector is a planar member with a central portion axially aligned with the passageway and an outer peripheral portion circumscribed about the central portion.

20. The combustible concealed space system of claim 17 , comprising:
the deflector comprises a plurality of spaced apart tines to define a plurality of open ended slots formed therebetween extending radially inward at equal distance.

Assignees

• Tyco Fire Products Lp

Inventors

• Silva Jr Manuel R
• Cutting Sean E
• Crowe Patrick Hoefner

Classifications

• A62C35/62 Primary

  dry, i.e. empty of extinguishing material when not in use · CPC title

• A62C3/00

  Fire prevention, containment or extinguishing specially adapted for particular objects or places ({in oil wells E21B29/08, A62C35/00; in mines or tunnels E21F5/00} ; for nuclear reactors G21C9/04) · CPC title

• A62C35/68

  Details, e.g. of pipes or valve systems (valves in general F16K) · CPC title

• A62C37/14

  with frangible vessels · CPC title

• A62C35/58 Primary

  Pipe-line systems · CPC title