EARLY SUPPRESSION FAST RESPONSE FIRE PROTECTION SPRINKLER

• US 20100071916A1
• Filed: 09/09/2009
• Published: 03/25/2010
• Est. Priority Date: 05/15/1998
• Status: Active Grant

• Current Assignee: Tyco Fire Products LP (Johnson Controls International plc)
• Original Assignee: Tyco Fire Products LP (Johnson Controls International plc)
• Inventors: FISCHER, Michael A.
• Granted Patent: US 7,735,570 B2
• Time in Patent Office: Days
• US Class Current: 169/37
• CPC Class Codes: A62C 31/02 Nozzles specially adapted for fire-extinguishing

Abstract

An early suppression fast response pendent-type fire protection sprinkler is suitable for use in accordance with one or more of NFPA 13, NFPA 231 and NFPA 231C to protect single row rack storage, double row rack storage and multiple row rack storage, the sprinkler having a K-factor of about 25 and flowing pressure of about 15 pounds per square inch. Preferably, the sprinkler has a body defining an orifice and an outlet for delivering a flow of fluid from a source, and a deflector mounted with a first surface opposed to flow of fluid from the outlet. The deflector defines at least one pair of generally opposed reentrant slots extending from the first surface through the deflector, the reentrant slots extending from slot openings at an outer peripheral edge of the deflector inwardly from the peripheral edge toward a deflector axis.

Claims

1. An early suppression fast response pendent-type fire protection sprinkler suitable for use in accordance with one or more of NFPA 13, NFPA 231 and NFPA 231C, to protect single row rack storage, double row rack storage and multiple row rack storage having a maximum storage height of 25 feet in a storage area having a maximum ceiling height of 30 feet, with no open containers and no solid shelves, said sprinkler comprising a sprinkler body defining an orifice and an outlet for delivering a flow of fluid from a source, and having a K-factor of about 25 and a minimum design flowing pressure of about 15 pounds per square inch at the most hydraulically remote sprinkler.