| 摘要 |
<p>PCT No. PCT/DK96/00506 Sec. 371 Date May 20, 1998 Sec. 102(e) Date May 20, 1998 PCT Filed Dec. 3, 1996 PCT Pub. No. WO97/21004 PCT Pub. Date Jun. 12, 1997The device comprises a housing (1) with a curved side wall, said housing forming a vortex chamber and having an inlet opening (2) and an outlet opening (3), means (15) being provided at the inlet opening (2) for fastening a flow controlling element (7), and which device comprises a discharge pipe (5) connected with the outlet opening (3) of the vortex chamber. In the discharge pipe (5) a by-pass is provided which may be closed by means of a closing member (11) and which has a flow capacity so dimensioned that it does not at expected maximum liquid pressure substantially exceed the flow capacity of the vortex chamber.</p> |
