| 摘要 |
A tubular discharge nozzle for spraying a pressurized fire suppression liquid from immediately beneath a ceiling in a fire sprinkling system is provided with a hollow, dome-shaped, ceiling protective shield disposed to deflect the laterally directed high velocity fluid streams downwardly away from the ceiling while, at the same time, permitting low volume escape of the fluid upwardly from the shield toward the ceiling through slots so located in the shield as to produce low velocity secondary plumes which cravitate exteriorly of the shield to merge with the primary streams and thereby maintain the needed, wide spray pattern below the nozzle-shield unit. |
