ADJUSTABLE FIRE SMOKE DETECTOR Russian patent published in 2022 - IPC G08B17/10 

FIELD: fire alarms.

SUBSTANCE: invention relates to the field of fire alarms, namely optoelectronic smoke detectors for fire alarms using scattered light to detect a fire. In the fire smoke detector, containing a housing consisting of upper and lower parts with slotted holes in the side part, a smoke guide element, a dust collector, a board, an indicator, an optical module, additional rectangular holes covered with a metal mesh are made above the slotted holes in the side surface of the housing, at the top along the end the lower part of the housing has an annular protrusion with a diameter exceeding the outer diameter of the housing, the smoke guide element is made in the form of a hollow truncated cone with a side surface having a vertical corrugation, fixed with pins into the grooves on the inner surface of the upper part of the housing, while the bottom of the smoke guide element is located below slotted openings of the housing, and the dust collector is made in the form of a hollow cylinder with a diameter smaller than the diameter of the inner smoke guide element, fixed with pins in the grooves on the inner surface of the lower part of the housing, the top of the dust collector is placed above the bottom of the inner hole control element. The upper end of the lower part of the housing is made with the possibility of overlapping the slotted holes in the intermediate working position and with the possibility of overlapping the slotted and additional rectangular holes in the transport position.

EFFECT: reducing the number of false alarms and the response time of the detector in the presence of complicating factors in the environment.

1 cl, 3 dwg