To reduce the turbulent flow and noise based on the ejection of fire extinguishing gas in a fire extinguishing gas system.
A rectification cylinder 30 has the pipeline 31 connected to the supply port of gas piping 22 for supplying the fire extinguishing gas into a target chamber where a fire occurs to permit the fire extinguishing gas from the gas piping 22 to pass. In this rectification cylinder 30, a large number of grooves 33, which extend from one opening end 31a of the pipeline 31 to the other opening end 31b thereof, are formed to the inner peripheral surface 31c of the pipeline 31 and are arranged circumferentially in the inner peripheral surface 31c so as to become parallel to each other along the pipeline in the longitudinal direction.
HARADA TOMOTAKA
HASHIMOTO YAKOTAKE
KUBOTA HIDEYUKI
SAKAI KENJI
KOJIMA TOSHIO
KONDO JUN
YOSHIDA KENICHI
KOMATSU MASAYOSHI
| JP2007175278A | 2007-07-12 |
| US20090038811A1 | 2009-02-12 |
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Next Patent: SILENCING CYLINDER AND GAS FIRE EXTINGUISHING SYSTEM EQUIPPED WITH THE SAME