Aerated jet regulator having a flow rectifier in the form of a network structure

1. A jet regulator ( 100 ) comprising: a jet regulator housing ( 2 ) having a housing interior, a flow straightener located in the housing interior, said flow straightener having at least one insert part ( 8 , 9 ) that is insertable into the housing interior, a first of said at least one insert part ( 8 , 9 ) having a grid structure which is formed from a set of radially oriented webs ( 13 , 13 ′) which intersect or are in contact with a set of concentrically encircling webs ( 15 ) at intersection points or contact points, at least one aeration opening ( 4 ) which passes through a housing circumferential wall ( 3 ) of the jet regulator ( 100 ), wherein each of the radially oriented webs ( 13 ) includes a free web end that protrudes beyond an outer one of the concentrically encircling webs ( 15 ) and ends at a distance from a housing inner circumference of the jet regulator housing ( 2 ).

2. The jet regulator as claimed in claim 1 , wherein the at least one insert part includes, in addition to the first of the at least one insert part ( 8 ), a second insert part ( 9 ) that is insertable into the housing interior of the jet regulator housing ( 2 ).

3. The jet regulator as claimed in claim 2 , wherein the second insert part ( 9 ) is connected downstream of the first of the at least one insert part ( 8 ) in a throughflow direction and has a lattice or grid structure made up of webs ( 13 , 13 ′; 15 ) that intersect one another at intersection points ( 14 ) or are in contact at contact points ( 22 ).

4. The jet regulator as claimed in claim 3 , wherein at least one of the first insert part ( 8 ) or the second insert part ( 9 ) has an encircling outer retaining ring ( 12 ′), said retaining ring ( 12 ′) bounding the lattice or grid structure of said at least one of said first or second insert part ( 9 ).

5. The jet regulator as claimed in claim 4 , wherein the lattice or grid structure acts on an inner circumference of the retaining ring ( 12 ′) of the at least one insert part ( 9 ).

6. The jet regulator as claimed in claim 1 , further comprising an anti-rotation device provided at least between the first of the at least one insert part ( 8 ) and the housing inner circumference.

7. The jet regulator as claimed in claim 1 , further comprising a jet splitter ( 6 ) connected upstream of the flow straightener in a flow direction, and the at least one aeration opening ( 4 ) is arranged at the housing inner circumference in an annular zone provided between the flow straightener and the jet splitter ( 6 ).

8. The jet regulator as claimed in claim 2 , wherein the second insert part ( 9 ) also has a grid structure formed from webs ( 13 , 13 ′; 15 ) that intersect or are in contact with one another, and the intersection points ( 14 ) or contact points ( 22 ) formed by the webs ( 13 , 13 ′; 15 ) of the second insert part are arranged in such an offset manner with respect to the grid structure of the first insert part ( 8 ) that said intersection points ( 14 ) or contact points ( 22 ) are arranged beneath throughflow openings, bounded by adjacent ones of the webs ( 13 , 15 ), of the first insert part ( 8 ).

9. The jet regulator as claimed in claim 4 , further comprising a splash guard ring ( 23 ; 101 ) that is at least one of: arranged in the housing interior of the jet regulator housing ( 2 ), between the at least one aeration opening ( 4 ) and the flow straightener, or retained or integrally formed on the retaining ring.

10. The jet regulator as claimed in claim 9 , wherein an outer circumferential periphery of the splash guard ring ( 23 ; 101 ) bears against the housing inner circumference of the jet regulator housing ( 2 ) or is moved into a vicinity of the housing inner circumference.

11. The jet regulator as claimed in claim 9 , wherein the splash guard ring is connected integrally to the first insert part ( 8 ), on an inflow side, of the flow straightener.

12. The jet regulator as claimed in claim 9 , further comprising at least one anti-rotation protrusion ( 18 ) on an outer circumference of the at least one insert part, said at least one anti-rotation protrusion ( 18 ) protruding into at least one anti-rotation groove or indentation ( 19 ) located in an inner circumference of the jet regulator housing ( 2 ).

13. The jet regulator as claimed in claim 12 , wherein the at least one anti-rotation protrusion is a plurality of anti-rotation protrusions ( 18 ), which are spaced apart from one another in a circumferential direction on an outer circumference of at least the first insert part ( 8 ).

14. The jet regulator as claimed in claim 12 , wherein the at least one anti-rotation protrusion ( 18 ) provided on the first of the at least one insert part ( 8 ) connects the splash guard ring ( 101 ) and the grid structure of the first insert part ( 8 ) integrally together.

15. The jet regulator as claimed in claim 1 , further comprising at least one web-free drain opening ( 20 ) on the first of the at least one insert part ( 8 ) between the free web ends of the radially oriented webs ( 13 ) thereof and the housing inner circumference of the jet regulator housing ( 2 ), and the at least one drain opening ( 20 ) is arranged beneath the at least one aeration opening ( 4 ) in a flow direction.

16. The jet regulator as claimed in claim 1 , further comprising a lattice or grid structure ( 1 ) integrally formed on an outflow side of the jet regulator housing ( 2 ), said lattice or grid structure ( 1 ) forming an outlet end face of the jet regulator ( 100 ).