Jet regulator

Abstract

A jet regulator ( 100 ) including a jet regulator housing ( 2 ) is disclosed, in the housing interior of which a perforated plate ( 5 ) is provided with a plurality of flow-through holes ( 6 ) for dividing the through-flowing water. The jet regulator described is characterised in that at least one flow-through hole ( 6 ) extends conically towards its outflow side in at least one outflow-side hole section. It is also possible for flow obstacles to be provided on the outflow side of the perforated plate ( 5 ) in the jet regulator housing ( 2 ) and/or on the outflow front face of the jet regulator housing, which are arranged or concentrated there in a central or middle region and which deflect the through-flowing water into an outer annular zone. This jet regulator ( 100 ) enables an aerated and thereby sparkling-soft water jet to be generated even with low flow-through performance and low water pressure.

1 . A jet regulator ( 1 ,  10 ,  100 ) comprising a jet regulator housing ( 2 ), in a housing interior of which there is provided a perforated plate ( 5 ) which has a multiplicity of throughflow holes ( 6 ) for dividing water flowing therethrough in a flow direction, at least one of the throughflow holes ( 6 ), at least in an outflow-side hole section, widens in a tapered or conical manner toward an outflow side thereof, and on the outflow side of the perforated plate ( 5 ) and at a distance therefrom, there is an encircling impingement bevel ( 19 ) which narrows a clear housing cross section in said region progressively in the flow direction. 
     
     
         2 . The jet regulator as claimed in  claim 1 , wherein at least one of the throughflow holes ( 6 ), at least in the outflow-side hole section, widens in a tapered or conical manner toward the outflow side such that an individual jet or spray jet which emerges from the throughflow hole ( 6 ), and which widens due to the tapered shape or conicity, mixes in the housing interior with the individual jet of at least one adjacent one of the throughflow holes ( 6 ). 
     
     
         3 . The jet regulator ( 100 ) as claimed in  claim 1 , wherein on the outflow side of the perforated plate ( 5 ), flow obstructions are provided in at least one of the jet regulator housing ( 2 ) or on an outflow face surface of the jet regulator housing ( 2 ), said flow obstructions are arranged in a middle region and divert the through-flowing water into an outer annular zone. 
     
     
         4 . The jet regulator as claimed in  claim 1 , wherein the impingement bevel ( 19 ) forms an inflow side of a wall section which is formed as at least one constriction which undulates as viewed in a longitudinal section. 
     
     
         5 . The jet regulator as claimed in  claim 1 , wherein the jet regulator housing ( 2 ) is of multi-part form and has at least two housing parts ( 26 ,  27 ) which are connectable to one another. 
     
     
         6 . The jet regulator as claimed in  claim 5 , wherein the impingement bevel ( 19 ) is formed integrally on a housing inner circumference of an outflow-side one of the housing parts ( 27 ). 
     
     
         7 . The jet regulator as claimed in  claim 6 , wherein the perforated plate ( 5 ) is formed integrally in a housing interior of an inflow-side one of the housing parts ( 26 ). 
     
     
         8 . The jet regulator as claimed in  claim 1 , wherein at least one mesh or grate structure is positioned downstream of the perforated plate ( 5 ) as viewed in the flow direction. 
     
     
         9 . The jet regulator as claimed in  claim 8 , wherein the mesh or grate structure is formed from two sets of webs ( 7 ,  9 ) which intersect one another at intersection nodes ( 8 ). 
     
     
         10 . The jet regulator as claimed in  claim 9 , wherein the mesh structure is formed from radial webs ( 7 ) and from concentric webs ( 9 ) which intersect said radial webs at the intersection nodes ( 8 ). 
     
     
         11 . The jet regulator as claimed in  claim 9 , wherein there are at least two of the mesh or grate structures which are spaced apart from one another are positioned downstream of the perforated plate ( 5 ) as viewed in the flow direction. 
     
     
         12 . The jet regulator as claimed in  claim 11 , at least one of the throughflow holes ( 6 ) is aligned, in the flow direction, with a radial web ( 7 ) of one of the mesh structures and with a concentric web ( 9 ) of an adjacent one of the mesh structures. 
     
     
         13 . The jet regulator as claimed in  claim 12 , wherein the webs ( 7 ,  8 ) that are aligned in each case with one of the throughflow holes ( 6 ) overlap or intersect, in the flow direction of the at least one of the throughflow holes ( 6 ), in different planes of said mesh structures. 
     
     
         14 . The jet regulator as claimed in  claim 11 , wherein each of the mesh structure is formed by an insert part ( 11 ,  12 ) that is insertable into the housing interior of the jet regulator housing ( 2 ). 
     
     
         15 . The jet regulator as claimed in  claim 14 , wherein each of the insert parts ( 11 ,  12 ) has, on an outer circumference, an encircling annular wall ( 13 ) to which said webs ( 7 ) of the mesh or grate structure are connected. 
     
     
         16 . The jet regulator as claimed in  claim 10 , wherein there are at least two of the mesh or grate structures, and at least the concentric webs ( 9 ) of an upstream one of the mesh structures as viewed in the flow direction has an identical or smaller web thickness in relation to the webs ( 7 ,  9 ) of one of the mesh structures which is adjacent at the outflow side as viewed in the flow direction. 
     
     
         17 . The jet regulator as claimed in  claim 1 , wherein the perforated plate ( 5 ) has a central, hole-free impingement surface ( 14 ) which is bordered by at least one annular wall ( 15 ) protruding from an inflow side of the perforated plate that defines an internal annular housing, the internal annular housing has passage openings ( 16 ) oriented in a radial direction defined therethrough, and in each case one of the throughflow holes ( 6 ) of the perforated plate ( 5 ) is provided beneath the internal annular housing in a throughflow direction on that side of the passage openings ( 16 ) which is arranged in an impingement surface plane. 
     
     
         18 . The jet regulator as claimed in  claim 17 , wherein the internal annular housing is bordered, on an outer circumference, by an encircling impingement surface ( 29 ). 
     
     
         19 . The jet regulator as claimed in  claim 1 , wherein an outflow-side face surface of the jet regulator housing ( 2 ) is formed by a mesh or honeycomb structure ( 21 ;  22 ), and the mesh or honeycomb structure ( 21 ;  22 ) that forms the outflow-side face surface is either non-detachably connected to the jet regulator housing ( 2 ) or formed by an insert part ( 23 ) that is inserted into the jet regulator housing ( 2 ). 
     
     
         20 . The jet regulator as claimed in  claim 19 , wherein the mesh or honeycomb structure ( 21 ;  22 ) that forms the outflow-side face surface of the jet regulator housing ( 2 ) is formed by webs ( 24 ,  25 ) which, at least in an outflow-side sub-region, narrow in the flow direction. 
     
     
         21 . The jet regulator as claimed in  claim 1 , wherein the jet regulator ( 1 ,  10 ,  100 ) is an aerated jet regulator which has at least one aeration opening ( 17 ) which issues into the housing interior on the outflow side of the perforated plate ( 5 ) and connects the housing interior to atmosphere.