Jet diffusor

Abstract

A jet aerator ( 1 ) having an aerator housing ( 8 ) that can be installed in the water discharge of a sanitary outlet fitting, and having a jet splitter ( 12 ) in the interior of the housing, dividing the inflowing water flow into a plurality of individual jets, a mixing zone ( 14 ) being disposed downstream of the splitter for aerating the individual jets, wherein at least one aerator duct ( 16 ) is provided that ends in the mixing zone ( 14 ). The jet aerator has a throttle or closing piece ( 18 ) for reducing and/or optionally activating or deactivating the aerating function, the throttle or closing piece being displaceable between an open position opening the at least one aerating duct ( 16 ) and a throttle or closing position at least partially closing the at least one aerating duct ( 16 ) by a rotary and/or sliding movement.

1 . Sanitary unit comprising a jet aerator ( 1 ,  2 ,  3 ,  4 ,  5 ,  6 ,  7 ) which has an aerator housing ( 8 ) which can be inserted into a water outlet of a sanitary outlet fitting and which has a jet splitter ( 12 ) located in an interior of the housing which separates the incoming water flow into a multiplicity of individual jets and downstream of which at an outflow side is positioned a mixing zone ( 14 ) for aerating the individual jets, with at least one aerating duct ( 16 ) which opens out in the mixing zone ( 14 ) being provided, and having a throttling or closing piece ( 18 ) which, for at least one of throttling or selectively activating or deactivating the aerating function, can be varied in terms of a relative position thereof with respect to the aerator housing ( 8 ), an outlet mouthpiece ( 9 ) which can be mounted on the water outlet of the outlet fitting, the jet aerator ( 1 ,  2 ,  3 ,  4 ,  5 ,  6 ,  7 ) is insertable into the outlet mouthpiece ( 9 ), the at least one aerating duct ( 16 ) is provided, at least in sections, between the outlet mouthpiece ( 9 ) and the aerator housing ( 8 ), the throttling or closing piece ( 18 ) can be moved, by at least one of a rotational or sliding movement, between an open position, in which the at least one aerating duct ( 16 ) is open, and a throttling or closed position, in which the at least one aerating duct ( 16 ) is at least partially closed, and the throttling or closing piece ( 18 ), in the throttling or closed position, at least partially closes off the at least one aerating duct ( 16 ) in at least one of a region of at least one duct orifice, which leads to the mixing zone ( 14 ), of said aerating duct ( 16 ) or in a region of at least one duct inlet ( 19 ) of said aerating duct ( 16 ). 
   
   
       2 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) is sleeve-shaped and engages around the aerator housing ( 8 ). 
   
   
       3 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) is held in at least one of a rotatable or slidable manner on the aerator housing ( 8 ) or on the outlet mouthpiece ( 9 ). 
   
   
       4 . The sanitary unit as claimed in  claim 2 , wherein the jet aerator ( 3 ,  4 ,  7 ) has, on a periphery of the aerator housing ( 8 ), at least one orifice opening ( 17 ) which leads to the mixing zone ( 14 ), and the sleeve-shaped throttling or closing piece ( 18 ), in the throttling or closed position, at least partially closes off the at least one orifice opening ( 17 ). 
   
   
       5 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) can be latched in at least one of the open position or in the throttling or closed position. 
   
   
       6 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) is connected to the outlet mouthpiece by a screw thread ( 20 ). 
   
   
       7 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) carries an annular seal which, in the throttling or closed position of the throttling or closing piece ( 18 ), at least partially closes off the at least one duct inlet ( 19 ) of the aerating duct ( 16 ) which is provided between the outlet mouthpiece ( 9 ) and the aerator housing ( 8 ). 
   
   
       8 . The sanitary unit as claimed in  claim 1 , wherein the throttling or closing piece ( 18 ) engages around the outlet mouthpiece ( 9 ), and an outer periphery of the throttling or closing piece ( 18 ) forms a handle. 
   
   
       9 . The sanitary unit as claimed in  claim 1 , wherein an encircling sealing surface ( 22 ) is provided on the aerator housing ( 8 ), the sealing surface ( 22 ) interacts with a counterpart sealing surface ( 23 ) on the throttling or closing piece ( 18 ), and the throttling or closing piece ( 18 ), in the closed position, acts with the counterpart sealing surface ( 23 ) against the sealing surface ( 22 ) on the aerator housing ( 8 ) in a sealing fashion. 
   
   
       10 . The sanitary unit as claimed in  claim 9 , wherein the duct inlet ( 19 ) of the at least one aerating duct ( 16 ) is bordered by the sealing surface ( 22 ) and the counterpart sealing surface ( 23 ). 
   
   
       11 . The sanitary unit as claimed in  claim 9 , wherein the throttling or closing piece ( 18 ) comprises two parts, including a rotary piece ( 29 ), which is rotatably held on the outlet mouthpiece ( 9 ), and a closure piece ( 30 ) which is guided on the aerator housing ( 8 ) so as to be slidable in an axial direction, and the rotary piece ( 29 ) and the closure piece ( 30 ) are connected by a screw connection ( 31 ) which converts a rotational movement on the rotary piece ( 29 ) into an axially directed sliding movement of the closure piece ( 30 ). 
   
   
       12 . The sanitary unit as claimed in  claim 11 , wherein the closure piece ( 30 ) carries the counterpart sealing surface ( 23 ). 
   
   
       13 . The sanitary unit as claimed in  claim 9 , wherein the encircling sealing surface ( 22 ) which is provided on the aerator housing ( 8 ) is arranged on the outlet-side end edge region of the aerator housing ( 8 ) or on the housing periphery below the at least one orifice opening ( 17 ) of the aerator housing ( 8 ) which leads to the mixing zone ( 14 ). 
   
   
       14 . The sanitary unit as claimed in  claim 1 , wherein a handle ( 35 ) projects on an outer end edge region of the throttling or closing piece ( 18 ). 
   
   
       15 . The sanitary unit as claimed in  claim 14 , wherein the handle ( 35 ) is provided on a partial region of a peripheral wall of the throttling or closing piece, said partial region is separated by a wall incision ( 36 ) which extends at both sides up to the jet aerator longitudinal central plane, and said partial region can be deflected in a direction of a longitudinal central plane of the jet aerator.