Title:
スプリンクラ消火設備
Document Type and Number:
Japanese Patent JP7042137
Kind Code:
B2
Abstract:
To provide a sprinkler fire-extinguisher preventing delay in discharging water while adopting double interlock control, and preventing harmful effects due to a failure of a pressure sensor.SOLUTION: A sprinkler fire-extinguisher 1 includes: a pre-action valve 29; a secondary side pipe 19; a sprinkler head 21; a fire sensor 41; a pressure sensor 45 constantly detecting pressure in the secondary side pipe 19; a secondary side pressure controller 51 changing pressure in the secondary side pipe 19; a signal converter 47 transmitting a pressure sensor failure signal when a detection signal of the pressure sensor 45 is input and pressure in the secondary side pipe 19 is not varied by the input signal, and transmitting a sprinkler operation signal when a fire is determined; and a control board notifying of a pressure sensor failure when the pressure sensor failure signal of the signal converter 47 is input, and opening the pre-action valve 29 when a fire signal of the fire sensor 41 and the sprinkler operation signal of the signal converter 47 are input.SELECTED DRAWING: Figure 1
Inventors:
Kokushi Yoshida
Application Number:
JP2018066416A
Publication Date:
March 25, 2022
Filing Date:
March 30, 2018
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
A62C37/08; A62C35/64
Domestic Patent References:
| JP2002113125A | ||||
| JP2017136507A | ||||
| JP6099955U |
Attorney, Agent or Firm:
Toshihiko Ishikawa