Dry sprinkler assemblies

Patent metadata

Field	Value
Publication number	US-10099080-B2
Application number	US-201314395036-A
Country	US
Kind code	B2
Filing date	Apr 19, 2013
Priority date	Apr 20, 2012
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A dry sprinkler assembly capable of providing fire suppression protection, including early suppression fast response protection and storage protection of a commodity having a nominal storage height of at least 20 feet beneath a ceiling of with a maximum nominal 40 foot ceiling height. The dry sprinkler assembly includes an internal passageway and an outlet defining a nominal K-factor of at least 16.8 GPM/PSI1′2. Embodiments of the sprinkler assembly include a deflector having a plurality of tines radially disposed about a central portion to define slots therebetween. Embodiments of the deflector define a non-planar deflecting member and a member with a non-circular perimeter. Installation of the sprinkler assembly provides for a insulation sealing assembly having a insulation ring, planar insert member and a surrounding housing.

First claim

We claim:

1. A pendent dry sprinkler assembly comprising:
an outer structure assembly having an inlet fitting defining an inlet end and an outlet frame defining a distal end, the outlet structure assembly having an internal passageway and an outlet defining a sprinkler axis and a nominal K-factor, the outlet frame includes a pair of spaced apart arms disposed about the outlet to define a first plane that includes the sprinkler axis and define a second plane that includes and is perpendicular to the first plane such that one arm is disposed on each side of the second plane;
an inner structural assembly disposed within the internal passageway; and
a deflector that distributes fluid delivered to the inlet fitting to protect a rack storage arrangement including cartoned unexpanded Group A plastic commodity having a nominal storage height of at least 20 feet beneath a ceiling with a maximum nominal 40 foot ceiling height, the deflector having a central portion centered about the sprinkler axis and a plurality of tines each extending radially from the central portion to a terminal portion, the terminal portion of at least two tines of the plurality of tines being angled relative to the central portion such that the terminal portion is axially further away from the outlet frame than the central portion, and
the plurality of tines include symmetrical tines and asymmetrical tines that present a non-planar surface to the outlet, and edges of the terminal portion of the plurality of tines approximate a non-circular perimeter,
the symmetrical tines including a first pair of diametrically opposed T-shaped tines bisected by the first plane and a second pair of diametrically opposed T-shaped tines bisected by the second plane, and
the asymmetrical tines being disposed circumferentially between the first and second pair of diametrically opposed T-shaped tines,
wherein each tine has a base extending from the central portion, a body extending away from the base, the terminal portion extending from the body to a terminal edge, and a pair of lateral edges extending from the base to the terminal edge, the plurality of tines being circumferentially spaced about the central portion to defines a plurality of slots therebetween, the lateral edges of circumferentially adjacent tines converging to define an innermost portion of one of the plurality of slots, the innermost portion of each slot defining a radiused end having the shortest radial distance of the slot to the sprinkler axis of the radiused end, the pair of spaced apart arms aligned along the first plane, the sprinkler axis being disposed along the intersection of the first and second planes, the first and second plane dissecting the deflector into four quadrants about the sprinkler axis, the innermost portion of each slot in one of the four quadrants defining a different radial distance to the sprinkler axis than the other slots in the quadrant.

2. The dry sprinkler assembly of claim 1 , wherein the stored commodity has a nominal storage height of 25 feet beneath a nominal 30 foot ceiling height.

3. The dry sprinkler assembly of claim 1 , wherein the at least two tines define different included angles with respect to the central portion.

4. The dry sprinkler of claim 1 , wherein the non-circular perimeter being any one of a rectangular perimeter, a square perimeter or an arcuate perimeter.

5. The dry sprinkler assembly of claim 1 , wherein the asymmetrical tines being asymmetric about a third plane bisecting the asymmetric tine and including the sprinkler axis.

6. The dry sprinkler assembly of claim 5 , wherein the plurality of tines include twelve tines.

7. The dry sprinkler assembly of claim 1 , wherein each tine is angled relative to the central portion at an angle, radially adjacent tines defining different angles relative to the central portion.

8. The dry sprinkler assembly of claim 1 , wherein the first pair of T-shaped tines define a radial length smaller than a radial length defined by the second pair of T-shaped tines.

9. The dry sprinkler assembly of claim 1 , wherein the terminal portion of each tine angled relative to the central portion such that the terminal portion is axially further away from the outlet frame than the central portion.

10. The dry sprinkler assembly of claim 1 , wherein the terminal portion of each tine angled relative to the central portion such that the terminal portion is axially further away from the outlet frame than the central portion, at least two tines defining different included angles with respect to the central portion.

11. The dry sprinkler assembly of claim 10 , wherein the first pair of tines define a radial length smaller than a radial length defined by the second pair of tines.

12. The dry sprinkler assembly of claim 1 , wherein at least two tines define different included angles with respect to the central portion, the first pair of tines define a radial length smaller than a radial length defined by the second pair of tines, the plurality of tines comprising twelve tines circumferentially spaced about the sprinkler axis so as to define a plurality of slots therebetween, each tine having lateral edges defining at least one tine width, the lateral edges extending such that the at least one tine width increases in the radial direction, the lateral edges further defining at least one width of each of the plurality of slots such that the plurality of slots include a first group of slots and a second group of slots, the at least one width of the first group of slots decreasing in the radial direction and the at least one width of the second group of slots increasing in the radial direction, the second group of slots being disposed at a 45 degree angle with respect to the first and second T-shaped pair of tines.

13. The dry sprinkler assembly of claim 1 , wherein the plurality of tines are circumferentially spaced about the sprinkler axis so as to define a plurality of slots therebetween each defining at least one slot width and including a first group of slots and a second group of slots, the at least one width of the first group of slots decreasing in the radial direction and the at least one width of the second group of slots increasing in the radial direction, the second group of slots being disposed at a 45 degree angle with respect to the first and second T-shaped pair of tines.

14. The dry sprinkler assembly of claim 1 , wherein the plurality of slots include a first group of slots and at least a second group of slots, the first group of slots having a slot width that narrows in the radial direction away from the sprinkler axis, the at least second group of slots having a slot width that becomes wider in the radial direction away from the sprinkler axis.

15. The dry sprinkler assembly of claim 14 , wherein the at least second group of slots extend radially at a 45 degree angle relative to the first and second plane.

16. The dry sprinkler assembly of claim 1 , wherein at least two tines of the plurality of tines include a bend portion disposed between the base and the terminal end, the bend portion disposing a surface of the terminal portion of the at least two plurality of tines at an angle relative to the central portion so as to bend the at least two tines away from the outlet.

17. The dry sprinkler assembly of claim 16 , wherein the terminal end of the plurality of tines are angled relative to the central portion such that the deflector presents a convex surface to the outlet.

18. The dry sprinkler assembly of claim 16 , wherein the at least two tines includes:
a first group of ti

Assignees

• Tyco Fire Products Lp

Inventors

• Miller Lyle
• Ringer Yoram

Classifications

• A62C31/02

  Nozzles specially adapted for fire-extinguishing · CPC title

• A62C35/62 Primary

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

• A62C3/004 Primary

  for freezing warehouses and storages · CPC title

• B05B1/265

  the liquid or other fluent material being symmetrically deflected about the axis of the nozzle · CPC title