| 摘要 |
<p>The safety device (128) comprises a water collection tank with an inlet pipe and outlet pipe (123), comprising a water seal forming a vapour-tight seal. Preferably, the waste water system comprises an overflow pipe (126ü, over which water flows only when the outlet pipe is blocked. The overflow pipe has a vapour-tight seal from the water connection tank from the water seal, which is filled up by available waste water. Water above a certain level in the safety device appears via the outlet pipe, if this is not blocked.</p> |
