FIELD: ventilation.
SUBSTANCE: system comprises a pipeline facing one or a plurality of controlled areas, and sucking air in each of the controlled areas; a photoelectric smoke sensor attached to the pipeline in a position facing each of the controlled areas and detecting smoke admixed to the air, by sucking air from each of the controlled areas; a control device connected to the base end portion of the tube and sucking air from the controlled area, and electrically connected to the photoelectric smoke sensor so as to obtain and process the signal detected. The photoelectric smoke sensor comprises a portion of smoke detecting which detects smoke in the intake air, at that on the inlet side of the portion of smoke detection there is a suction opening which sucks air directly from the controlled area, and which is equipped with the base portion of the suction tube end, included in the controlled area, and a mounting port formed on the outlet side of the smoke detection portion, which is equipped with an end portion of the pipeline.
EFFECT: invention detects smoke quickly and precisely, and identifies quickly the location of the fire.
11 cl, 12 dwg
