System extracts and filters fumes from toilet pedestal, draws air from toilet rim and bubbles it through water in flushing cistern

摘要

A fan (4) in the cistern (2) sucks air from the inner rim (7) of the toilet pedestal (1) back up the siphon pipe (3) into the cistern. The air is discharged under the water and bubbles (12) up to the surface (11). The air can leave the cistern via a charcoal filter (14) and a grille (15) in the lid.