| 摘要 |
<p>The fan which is used to draw the air out of the toilet pan area is driven by a water turbine (2) operated by a water jet (4) which can be connected to the water pipe by a mechanically operable valve (3). The fan and turbine can be one structural unit wherein the fan wheel and the turbine have a common shaft. To ensure that all odours are completely removed while at the same time preventing the build up of chalk deposits etc it is pref. if a solvent is added in known way to the water, preferably between the inlet valve and the water jet nozzle.</p> |
