OPTICAL-ELECTRONIC FIRE SENSOR Russian patent published in 2023 - IPC G08B17/10 

FIELD: fire alarms.

SUBSTANCE: optical-electronic fire detector contains an insert with a fastener fixed in the cap, a housing with a base, an optical module, a smoke guide element made inside the housing in the form of a disk parallel to the base. Slots are located on the side surface of the cylindrical housing below the optical module. Inside the body, above the slots, two smoke guide elements are installed, placed parallel to the base of the body and one above the other, the first smoke guide element is made in the form of a ring with an outer diameter equal to the inner diameter of the body, the second smoke guide element is located above the first smoke guide element and is made in the form of a disc with an outer diameter equal to the inner diameter of the housing, the smoke guide elements are interconnected with the formation of a free space between them, providing a reversal of the air flow, the inner surface of the base is made with vertical partitions that ensure dust settling.

EFFECT: improved protection against false alarms in case of disturbing influences in the form of a sharp horizontal air flow, direct ingress of smoke into the housing and the smoke chamber.

1 cl, 1 dwg