PNEUMATIC SIPHON FOR FAN VENTILATION OF THE SEWERAGE SYSTEM Russian patent published in 2023 - IPC E03F5/08 

FIELD: water-and-sewage systems.

SUBSTANCE: plumbing and sewer plant used inside buildings. The pneumatic siphon contains an S-shaped pipe connected by its lower part to the drain pipe of the building's internal sewerage system through a coupling (3). The coupling (3) is provided in the inner cavity with at least four helical plates welded to the inner wall of the coupling equidistant from each other. A similar coupling (3) is installed in the upper part at the end of the siphon pipe. At the level of the lower pipe bend, a bypass pipe (1) is provided, which is connected to the lower part of the siphon.

EFFECT: operation of sewer systems for draining and ventilation of buildings and structures during the cold periods of the year is ensured.

1 cl, 3 dwg