| 摘要 |
The invention relates to a ventilation system of the toilet bowl cavity, ventilation which may be also extended for the ventilation of the interior of the toilet rooms or the personal or public bathrooms. According to the invention, the ventilation system consists of a passage piece (1), fixed on a vertical axis, at the base of a flushing tank (2), connected to a discharge tube (3) in the shape of a reversed U, which has the second end placed inside a double walled tube (4), forming a rigid system which allows the axial translation of the double walled tube (4) when the water flushing mechanism is actuated, so that the water minimum level in the tank (2) allows the tightening of the discharge circuit Δ h1 of the vitiated air in the toilet bowl, by the system of water flushing from the discharge tube (3) and then through the passage piece (1) into the external discharge pipe, which is inclined by a minimum angle α , below the horizontal plane, towards a ventilator (6'), where the maximum water level is below the level of the free surface of the double walled tube (4), with Δ h2. |
