| 摘要 |
A system for venting a toilet comprising a toilet bowl fitted with a discharge outlet at a lower portion of the toilet bowl connected to a sewer line and an inlet for flushing water, connected to a water cistern via a flushing tube and an exhaust line connected at a first end to the sewer line and its second end being in a flow communication with the toilet bowl via the flushing tube. The exhaust line is fitted with an electrically operated exhaust fan adapted to generate flow in direction towards the sewer line, and a valve member located intermediate the exhaust fan and the flushing tube. The valve member prevents flow in direction from the sewer line and further preventing water flow in direction from the flushing tube towards the exhaust fan. Switching apparatus is provided for activating the exhaust fan to excite gas flow from the toilet bowl towards the sewer line.
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