| 摘要 |
A vortex brake ( 4 ) for a liquid drainage system has a vortex chamber ( 5 ), an inlet section ( 6 ) and an outlet ( 12 ), wherein liquid can flow into the inlet section ( 6 ), through this into the vortex chamber ( 5 ), through this and out through the outlet ( 12 ). The vortex chamber ( 5 ) has a side wall ( 9 ), following a conical face, and a base wall ( 11 ). The conical face has a cone axis ( 10 ), and the outlet ( 12 ) is located at an apex of the conical face. The inlet section ( 6 ) has side walls ( 14 ) and a bottom wall ( 15 ) that extend mutually in parallel in a direction of flow ( 16 ) in the inlet section ( 6 ), and a ceiling. Said ceiling having a converging ceiling portion, which extends between a first and a second end of the ceiling portion, and which, in said direction of flow, extends converging towards the bottom wall ( 15 ).
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