| 摘要 |
PROBLEM TO BE SOLVED: To improve the fire extinguishing performance by spraying fire extinguishing liquid to a wide range. SOLUTION: This fire extinguishing nozzle jetting out fire extinguishing liquid from an orifice 25 is so formed that a flowing direction change means 23 changes the flowing direction of the fire extinguishing liquid introduced into a nozzle body 26 to the internal circumferential direction of the nozzle body; a rotation chamber B is provided between the flowing direction change means and the orifice; the fire extinguishing liquid passing through the flowing direction change means is circled along the internal circumferential face of the nozzle body in the rotation chamber, and the circling extinguishing liquid becomes a vortex by being pressurized from the circumferential edge side of the orifice by a guide face 25b provided in the orifice and is jet out from a jet port. COPYRIGHT: (C)2008,JPO&INPIT
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