AERATOR

Description

[0001] The invention relates to a jet regulator with slats.

[0002] From DE 103 541 50 B3 a jet regulator for an outlet of a water-carrying fitting for creating a laminar, crystal-clear water jet is known, comprising a housing which can be fastened to the free end region of the outlet, wherein the housing of the jet regulator for fastening within a non-circular inner cross-section of the outlet is formed as a correspondingly shaped, from two identical, mirror-inverted plastic injection-molded parts which can be fastened to one another, which have a circumferentially formed elastic sealing and clamping area on the water outlet side.

[0003] From DE 25 52 786 A1 a device for the noise-reduced introduction of water into a tub with a shower is known, wherein a hollow body is attached to the tub, which has means for connecting the shower to its fresh water inlet opening and at least one fresh water outlet opening opening into an inner wall of the tub.

[0004] The jet regulator preferably comprises a housing and a locking element movably arranged on the housing. The locking element is acted upon by a spring element accessible from outside the faucet outlet and, in its rest position, protrudes beyond the housing to hold the jet regulator in the faucet outlet. A tool for removal is inserted into the faucet outlet in an insertion direction. By inserting the tool, for example, into a gap provided for this purpose between the faucet and the jet regulator, which is formed, for example, by a recess on the jet regulator that forms a gap in the use position, the locking element can be disengaged.

[0005] Aerators of the type mentioned above are therefore not held in place by a threaded connection between a spout and the faucet outlet, but are usually fixed to the faucet exclusively by a locking mechanism formed by the locking and spring element. This eliminates the need for a spout protruding from the faucet, for example, resulting in a more aesthetically pleasing overall appearance.

[0006] For example, the aerators mentioned above can be rectangular aerators (rectangular aerators).

[0007] According to an advantageous embodiment, it can be provided that the tool engages in an undercut on the jet regulator oriented in the insertion direction in order to be able to pull the jet regulator out of the faucet outlet. Due to the locking mechanism, a force can be transmitted to the jet regulator by means of the tool. In order to be able to achieve a force-locking and / or form-locking locking, the tool can have at least one projection, preferably at least two projections, which engage in the undercut(s) on the jet regulator in the use position. This allows a pulling mechanism to be formed. In contrast to previously known solutions, the invention thus succeeds for the first time in decoupling a unlocking mechanism from a pulling mechanism. This considerably simplifies the removal of the jet regulator from the faucet outlet.

[0008] The at least one undercut can extend into a gap-forming recess on the housing of the jet regulator provided for inserting the tool. In particular, the undercut can extend from the housing transversely or perpendicularly to the insertion direction. The at least one projection can have a contact surface inclined toward the jet regulator, which acts upon the at least one undercut during insertion, so that the projection is deflected before it engages behind the undercut in the insertion direction. The at least one projection can be arranged, for example, on a spring means of the tool.

[0009] The undercut itself can have a corresponding counter contact surface, preferably aligned parallel to the contact surface of the projection, in order to be able to displace the counter contact surface on the contact surface when inserting the tool.

[0010] Preferably, the jet regulator according to the invention is designed such that the spring element can be loaded with a tool inserted into the fitting outlet in an insertion direction during insertion until the locking element releases the jet regulator.

[0011] The spring element can, for example, be arranged in a recess, for example the recess already mentioned above, on the housing which is provided for inserting the tool.

[0012] In order to further simplify the removal of the jet regulator from the faucet outlet, it can be provided that the spring element does not protrude beyond the housing in the rest position.

[0013] According to a further advantageous embodiment, the spring element can have at least two legs connected to one another, in particular connected to one another at an apex. By acting on the spring element by means of the tool, for example by two rigid arms of the tool, the two legs are moved towards one another or away from one another until the locking element or the locking elements connected to a leg no longer protrude beyond the housing. Preferably, the two legs are moved towards one another by the tool in a direction transverse or perpendicular to the insertion direction in order to move the locking element or locking elements from the rest position into the release position. The tool thus presses the two legs of the spring element together, for example, in order to be able to remove the jet regulator.

[0014] The spring element is connected to the locking element or elements, whereby the locking element or elements are moved when the spring element is adjusted.

[0015] The locking element(s) of the aerator protrude beyond the housing in the rest position in a direction either diagonally or perpendicular to the insertion direction. Thus, at least one locking element forms a radial locking position on the faucet outlet. The holding force exerted by the locking element (which can correspond to the clamping force of the spring element) acts perpendicularly or nearly perpendicularly on the inner wall of the faucet outlet.

[0016] According to an advantageous embodiment, it can be provided that the aforementioned region is arranged in an edge region of the outlet structure and / or that the region is arranged in a central region of the outlet structure.

[0017] According to the invention, the outwardly facing slats have a cross-section oriented perpendicular to their extension, with a curved outer contour. This has the advantage of enabling particularly good separation of individual water jets, thus achieving a better jet shape. For example, a better rectangular jet shape can be achieved in this way if the jet regulator is rectangular.

[0018] According to a further advantageous embodiment, fins with a cross-section oriented transversely to their extension and an outer contour aligned in the direction of flow can be arranged outside the aforementioned region. These fins can therefore extend in the direction of flow. In particular, these fins are straight outside the aforementioned region and result in a straight-flowing water jet.

[0019] The jet regulator according to the invention preferably comprises a jet acceleration unit which has a seal on the outside circumferentially surrounding a flow direction and which has lamellae arranged on the downstream side that extend transversely to the flow direction, wherein the jet shaping elements each have a free end with which they protrude from a support wall running along the flow direction. This has the advantage that the jet regulator can be manufactured by injection molding. In particular, the jet regulator has the advantage that a housing part and a jet shaping part are formed as a single piece. In previously known jet regulators with jet shaping parts for generating a diverging water flow, it was always necessary for the jet shaping parts to be formed separately from the housing. This now enables simpler production of a jet regulator with the desired properties.

[0020] A further advantageous embodiment can provide for the jet acceleration unit to be formed at an upstream end of a jet aeration area. For example, the jet acceleration unit can be designed as a perforated plate or as a diffuser-diffuser ring combination.

[0021] According to a further development of the jet regulator, it can be characterized by an elongated, non-circular outer contour perpendicular to the flow direction. In particular, the free ends of the jet-shaping elements can each be arranged on a long side of the outer contour in the use position. Alternatively or additionally, the support wall can be arranged on a long side of the outer contour in the use position.

[0022] According to a further advantageous embodiment, the free ends can form a laterally open area in a peripheral wall. In particular, the jet-shaping elements can end at a uniform height.

[0023] According to a further advantageous embodiment, the locking element can be guided in a guide formed by the housing. In particular, the guide can be designed as a plain bearing and / or the guide can determine that the locking element is adjustable in one, in particular only one, degree of freedom, preferably in a straight line.

[0024] In order to be able to determine more precisely how far the locking element can be extended, a further advantageous embodiment can provide at least one stop on the housing, which is acted upon in a locking position by a corresponding counter-stop on the locking element. In particular, the stop can define the maximum extent to which the locking element protrudes from the housing. The stop and counter-stop are therefore spaced apart from one another in a release position and / or contact one another in a locking position.

[0025] According to a further advantageous embodiment, the locking element and / or the spring element can be formed separately from the housing. Thus, the locking element and / or the spring element can be formed separately from the housing rather than as part of it. The jet regulator can preferably have two locking elements, each connected to the spring element or to a respective spring element. A locking lug can be formed on a free end of the locking element, which is retracted into a release position when the spring element is actuated. By centrally actuating the spring element, the locking element or locking elements can thus also be adjusted. The locking element and / or the spring element are therefore not formed on the housing and can therefore be adjusted relative to the housing.

[0026] The separate design of the locking element and / or the spring element from the housing has the advantage that the locking lugs at the ends of the locking elements can be adjusted simultaneously. When the spring element or spring elements are actuated, the locking lugs are thus released simultaneously. The simultaneous adjustment of the locking lugs is also possible even though they protrude from the housing on opposite sides of the aerator. In other words, they are located far apart from each other on opposite sides of the aerator. This ensures particularly good fixation of the aerator when inserted, and also simplifies release by simply applying pressure to the central spring element. This design means that the spring element is not acted upon at the locking location, but at a distance from it. This means that no space is required to insert the tool at the locking location.

[0027] The invention will now be described in more detail using exemplary embodiments, but is not limited to these exemplary embodiments.

[0028] It shows: Fig. 1 shows a possible embodiment of a jet regulator according to the invention with several jet shaping elements designed as slats in a perspective view, Fig. 2 shows the embodiment variant from Fig. 1 in a side view, Fig. 3 a further perspective view of the aforementioned jet regulator with the front screen attached, Fig. 4 a further perspective view of the aforementioned jet regulator with the front screen removed, Fig. 5 a longitudinal section through an embodiment of the jet regulator, as in Fig. 6 highlighted with the arrows marked by A, Fig. 6 a top view of the jet regulator with inserted section lines A and B, Fig. 7 a cross section through the embodiment of the jet regulator, as in Fig. 6highlighted with the arrows marked by B, Fig. 8 a set of a jet regulator and a tool, with the tool not locked to the jet regulator (in a rear view), Fig. 9 the set of Fig. 8 , wherein the tool is locked onto the jet regulator (in a rear view), Fig. 10 an axially sectioned view of a jet regulator holder of a fitting outlet, into which a jet regulator is inserted (installation situation), Fig. 11 a further axially sectioned view of a jet regulator holder of a fitting outlet, into which a jet regulator is inserted (installation situation), wherein the locking element acts vertically on the inner wall of the jet regulator holder.

[0029] In the Figures 1-7 several views of a jet regulator, designated as a whole as 1, are shown.

[0030] The jet regulator 1 is designed to be inserted into a jet regulator holder 25 provided for this purpose on a faucet outlet 2 in the position of use and to be fixed therein.

[0031] In the Figures 1-7 In each case, a rectangular design of a jet regulator 1 is shown, which has a non-circular outer contour 23.

[0032] In order to achieve the most rectangular jet shape possible, the jet regulator 1 has a special outlet structure 9. The outlet structure 9 comprises a plurality of spaced-apart steel shaped elements 17.

[0033] The jet-shaping elements 17 comprise lamellae 10 arranged side by side in at least one row on an outlet side of the jet regulator 1. The lamellae 10 form an outlet pattern of the entire jet of a flowing fluid. Since they are arranged in the flow path of the jet regulator 1, they are surrounded by the entire jet.

[0034] The outlet structure 9 comprises a region 11 in which the slats 10 are positioned outward to create a diverging water flow. For example, the slats can be bent outward and / or arranged at an angle relative to the flow direction 18. In the illustrated embodiment, the said region 11 is formed in the edge regions 12. The slats 10 in the aforementioned region 11 have, for example, a cross-section 14 with a curved outer contour. They therefore deflect the fluid flow.

[0035] The fins 10 in the central region 13, however, are straight and form a straight fluid flow. This means that the fins 10 located outside of region 11 have a cross-section with an outer contour aligned in the flow direction. Furthermore, the two outermost fins 10 in the row of fins 10 are also straight.

[0036] The slats 10 each extend perpendicularly or transversely to the flow direction 18. The steel shaped elements 17 are formed on a support wall 20 of the housing 3. The jet-shaping elements 17 and the housing 3 are thus integral. The steel shaped elements 17, in particular the slats 10, have a free end 19, via which they are not arranged on a support wall 20, but rather lie freely. The free ends 19 of the steel shaped elements 17 and the support wall 20 each form a long side of the outer contour 23 of the jet regulator 1. The steel shaped elements 17, in particular the slats 10, protrude transversely or vertically from the support wall 20 into the flow path.

[0037] In the area of ​​the free ends 19 of the beam-shaping elements 17, a peripheral wall of the housing 3 has a region 24 that is particularly open laterally. The beam-shaping elements 17 have a uniform length, or at least a majority of the beam-shaping elements 17 have a uniform length. Thus, they end at a uniform height.

[0038] A jet acceleration unit 15 is arranged upstream of the outlet structure 9 in the flow control device 18. The jet acceleration unit 15 is in turn arranged upstream of a jet aeration area 21 in the flow direction 18.

[0039] A liquid flowing through the jet regulator 1 thus first flows through the passage openings of the jet acceleration unit 15, then through the jet aeration area 21, in which the liquid is mixed with air, before the jet is formed in the outlet structure 9 and leaves the jet regulator or the fitting outlet 2 on the outlet side.

[0040] The jet aeration area 21 is formed within the housing 3 in the flow path of the liquid. In the jet aeration area 21, several jet shaping elements 17 are arranged, which are arranged as shown in the Figures 1 to 7As shown, they can be designed, for example, as distributor elements 36 in order to achieve a division of the water jet and its better mixing with air sucked in from outside through at least one air duct 37. At least one air duct 37 is formed on the housing 3, which penetrates at least one wall of the housing 3 in order to be able to suck air from outside into the jet aeration area 21 through the negative pressure created there.

[0041] Preferably, the at least one air channel 37 is formed downstream of the seal 16 in the flow direction 18. Further preferably, the at least one air channel 37 can be arranged on a narrow side of the housing 3.

[0042] The air duct 37 is formed at least partially by a boundary wall 39 extending in the flow direction 18, which laterally delimits the flow path. The boundary wall 39 extends in the flow direction 18 over the entire area in which the jet aeration area 21 and / or the outlet structure 9 is / are arranged. The air duct 39 can therefore run between an outer wall of the housing 3 and the boundary wall 39. An outer end of the air duct 39 can, for example, be located on the outlet side of the jet regulator 1.

[0043] Preferably, the jet regulator 1 has at least two air channels 37. In particular, these can be formed on opposite sides, for example, narrow sides of the housing 3.

[0044] The distributor elements 36 can - similar to the previously described slats 10 - be formed integrally with the housing 3. A cross-section of the distributor elements 36 can, for example, have rounded corners, in particular be round. The rounded corners make it easier to prevent noise generation. However, other shapes are also possible. The decisive factor here is that the distributor elements 36 represent a flow obstacle within the flow path, which can be achieved, for example, by the distributor elements 36 having an impact surface that runs, in particular, at least partially transversely to the flow direction 18. The distributor elements 36 of the embodiment shown are arranged in two rows, each next to one another, with the distributor elements 36 of the first and second rows being offset from one another in order to achieve the best possible division of a fluid flow and mixing with air.

[0045] The distributor elements 36 are formed on one or the aforementioned support wall 20 of the housing 3 and protrude, in particular transversely or vertically, into the flow path. Furthermore, the distributor elements 36 each have free ends 19, which form the open area 24 in the peripheral wall of the housing 3, in particular together with the slats 10. As shown in the Figures 1 to 7 As shown, the distribution elements 36 have a uniform height with the slats 10. The slats 10 are arranged downstream of the distribution elements 36.

[0046] The laterally open region 24 extends over at least 10%, in particular at least 20%, in particular at least 25%, in particular at least 33%, in particular at least 50%, preferably at least 60%, preferably at least 65%, preferably at least 80%, preferably at least 90%, of one side of the jet regulator 1, in particular the longitudinal side of the jet regulator 1.

[0047] The jet regulator 1 has a circumferential seal 16 on the outside of the jet acceleration unit 15. The seal 16 makes it possible to seal an external transition from the jet acceleration unit 15 to the downstream outlet structure 9 in the use position by the seal 16 resting against the inside of the fitting outlet 2.

[0048] The aerator receptacle 25 of the faucet outlet 2 has a stepped design. This has the advantage that the seal 16 does not have to be pushed with friction over the entire length of the aerator receptacle 25 when installing and removing the aerator 1. When inserted, the seal is pressed against the wall of the faucet outlet 2 and compressed. The aerator receptacle 25 can be provided with a groove into which the seal 16 is inserted when inserted, whereby the seal 16 does not completely fill the groove to enable a better seal.

[0049] The jet acceleration unit 15 can be designed, for example, as a perforated plate 26 and / or as a diffuser-diffuser ring combination (not shown). In this case, the diffuser-diffuser ring combination can comprise, in a conventional manner, a diffuser acting as an impact plate, followed by an annular nozzle defined by a rectangular diffuser ring.

[0050] In the use position of the aerator 1 - that is, when inserted into the faucet outlet 2 in a aerator receptacle 25 adapted for the aerator 1 - the aerator receptacle 25 covers the laterally open area 24. The open area 24 is thus covered by an inner wall of the aerator receptacle 25. The cover does not result in a complete seal; rather, a clearance is provided to allow for certain tolerances. This has the advantage that the outlet structure 9, consisting of jet-shaping elements 17 - such as slats 10 and distributor elements 36 - can be formed as a part molded onto the housing 3, in particular monolithically connected to the housing 3. For example, production can take place using an injection molding process.

[0051] In the Figures 8 to 11a further embodiment of a jet regulator 1 is shown as a set with a tool 6, which can be designed alone or in combination with the features of the previously mentioned embodiment.

[0052] The jet regulator 1 has a locking element 4 movably guided on its housing 3, which can be acted upon by a spring element 5 accessible from outside the faucet outlet 2 and / or wherein a force transmission from the spring element 5 to the locking element 4 is possible. In the embodiment shown, the locking element 4 is connected to the spring element. In particular, the locking element 4 and the spring element 5 can be formed integrally, in particular monolithically.

[0053] In the rest position of the locking element 4 and / or the spring element 5, the locking element 4 protrudes beyond an outer side of a wall of the housing 3. When the jet regulator 1 is inserted, the rest position corresponds to the locked position in which the jet regulator 1 is held in the faucet outlet 2.

[0054] The spring element 5 has two legs 34, which are connected to each other, in particular at a vertex. The two legs 34 spread out in two opposite directions, particularly in the rest position, so that an angle is enclosed between the two legs 34. Via the two distal ends of the two legs 34 of the spring element 5, force can be transmitted from the spring element 5 to a respective locking element 4, since the distal ends are each connected to and / or act upon a locking element 4. In the present case, the locking elements 4 are connected to the spring element 5 at the distal ends of the spring element 5.

[0055] The locking element 4 and the spring element 5 thus create a novel release mechanism 29. In the rest position, a force, in particular a clamping force generated by the spring element 5, acts radially and / or perpendicularly or nearly perpendicularly on an inner wall of the fitting outlet 2 through the locking element 4.

[0056] To remove the jet regulator 1 from the faucet outlet 2, a special tool 6 is required to enable unlocking. To do so, the tool 6 must be inserted into the faucet outlet 2 in an insertion direction 7, thereby applying pressure to the spring element 5 located outside the housing 3 upon insertion until the locking element 4 releases the jet regulator 1.

[0057] The Figures 8 and 9The tool 6 shown has two rigid arms 35 that protrude from a base body 40 designed as a handle part. The rigid arms 35 have a distance between them that is smaller than a distance between the two distal ends of the legs 34. The insertion direction 7 can run along or parallel to a longitudinal axis and / or a central axis of the jet regulator 1.

[0058] During the insertion of the tool 6 into the fitting outlet 2, the two legs 34 are pressed together, reducing the distance between the spread ends of the two legs 34. The locking elements 4, which protrude beyond the housing 3 in the rest position, are thereby retracted, releasing the locking mechanism. In this process, at least one locking element 4 is retracted in a direction perpendicular or transverse to the insertion direction 7, in particular in a straight line.

[0059] The at least one locking element 4 is mounted on the housing 3 by a guide 41, which can be designed, for example, as a plain bearing 38. Furthermore, the locking elements 4 and the spring element 5 are held on the housing 3 by the guide 41, in particular by the plain bearing 38. The locking element 4 is adjustable in one degree of freedom, preferably linearly, by the guide 41.

[0060] Two stops 42 are formed on the housing 3, and two corresponding counter-stops 43 are formed on the locking element 4. In a locking position, one stop 42 and one counter-stop 43 act on each other, thereby defining the maximum distance the locking element 4 protrudes from the housing in the locking position. In the release position, the stops 42 and the counter-stops 43 do not contact each other, but are arranged at a distance from each other.

[0061] Furthermore, the tool 6 has at least one projection 30, in particular two projections 30, which protrude / protrude transversely to the insertion direction 7 from a spring means 33. On the upper side of the projection 30, with which it is inserted forward in the insertion direction 7, a contact surface 31 is formed, oriented obliquely to the insertion direction 7.

[0062] The tool 6 is flat, allowing it to be inserted particularly into the back of the jet regulator 1. Therefore, the spring elements 33 do not need to be removed from undercuts or locking lugs 44 during removal.

[0063] On the jet regulator 1, in particular on the housing 3 of the jet regulator 1, an undercut 8 is formed which is oriented in the insertion direction 7 and which projects transversely or perpendicularly to the insertion direction 7.

[0064] The undercut further has a counter-contact surface 32 oriented obliquely to the insertion direction 7 and / or at least almost parallel to the contact surface 31 of the projection 30. Upon insertion of the tool 6 into the fitting outlet 2, the projection 30 is displaced and / or deflected against a restoring force generated by the spring means 33 at the undercut 8 until the projection 30 snaps into the undercut 8 and the tool 6 is locked to the jet regulator 1.

[0065] Thus, a pulling mechanism 28 is formed, which is decoupled from the previously described release mechanism 29. However, decoupling the jet regulator 1 from the faucet outlet 2 and coupling the jet regulator 1 to the tool 6 is possible solely by inserting the tool 6, in particular exclusively in the insertion direction 7, into the faucet outlet 2.

[0066] Coupling and uncoupling thus occur almost simultaneously using the same movement. After coupling the tool 6 to the aerator 1, a pulling force can be applied to the aerator 1 to pull the released aerator 1 out of the faucet outlet 2 in the opposite direction to the insertion direction 7.

[0067] The jet regulator 1 can have one locking element 4 or several locking elements 4, which are connected to a spring element 5 or each to a spring element 5. However, it is advantageous if several locking elements 4 are connected to a common spring element 5 or if the locking elements 4 are each connected to a spring element 5 and the two spring elements 5 are in turn connected to one another.

[0068] In the illustrated embodiment of the jet regulator 1, the locking element 4 and / or the spring element 5 are formed separately from the housing 3. Thus, the locking element 4 and / or the spring element 5 is / are not formed as part of the housing 3, but separate therefrom. Preferably, the jet regulator 1 can have two locking elements 4, each of which is connected to the spring element 5 or to a respective spring element 5. At the free ends of the locking elements 4, a locking lug 44 is formed, which is simultaneously retracted into a release position when the spring element 5 is actuated. By centrally actuating the spring element 5, the locking element 4 or the locking elements 4 can thus also be adjusted. The locking element 4 and / or the spring element 5 are therefore not formed on the housing 3 and can therefore be adjusted relative to the housing 3.

[0069] The separate design of the locking element 4 and / or the spring element 5 from the housing 3 has the advantage that the locking lugs 44 at the ends of the locking elements 4 can be adjusted simultaneously. When the spring element 5 or the spring elements 5 are actuated, the locking lugs 44 are thus released simultaneously. Simultaneous adjustment of the locking lugs 44 is also possible even though they protrude from the housing 3 on opposite sides of the jet regulator 1. Release is achieved by simply applying pressure to the central spring element 5. This design ensures that the spring element 5 is not applied at the locking location, but rather at a distance from it. Therefore, no space is required to insert the tool at the locking location. List of reference symbols

[0070] 1 Aerator 2 Fitting outlet 3 Housing 4 Locking element 5 Spring element 6 Tool 7 Insertion direction 8 Undercut 9 Outlet structure 10 Louvres 11 Area of ​​outwardly positioned louvres 12 Edge area 13 Central area 14 Cross section 15 Jet acceleration unit 16 Seal 17 Jet shaping element 18 Flow direction 19 Free end 20 Support wall 21 Jet aeration area 22 Front screen 23 Outer contour 24 Laterally open area 25 Aerator holder 26 Perforated plate 28 Pulling mechanism 29 Release mechanism 30 Projection 31 Contact surface 32 Counter contact surface 33 Spring means 34 Legs 35 Rigid arms 36 Distributor element 37 Air duct 38 Slide bearing 39 Boundary wall 40 Base body 41Guide 42Stop 43Counter-stop 44Locking lug

Claims

1. Jet regulator (1), having an outlet structure (9) comprising lamellae (10), wherein the lamellae (10) are directed outwardly at least in one region (11) of the outlet structure (9) in order to generate a diverging water flow, characterized in that the lamellae each extend transversely to the direction of flow, in that the outwardly directed lamellae (10) have a cross-section (14) oriented transversely to their extension, which has a curved outer contour, and in that lamellae (10) in a central region (13) of the outlet structure (9) are, in contrast, of straight design.

2. Jet regulator (1) according to the preceding claim, characterized in that the region (11) is arranged in an edge region (12) of the outlet structure (9).

3. Jet regulator (1) according to one of the preceding claims, characterized in that outside the region (11), lamellae (10) are arranged with a cross-section (14) which is oriented transversely to their extension and which has an outer contour aligned in the direction of flow (18).

4. Jet regulator (1) according to one of the preceding claims, characterized in that the lamellae (10) are arranged next to one another in at least one row on an outlet side of the jet regulator (1), in particular wherein the two outermost lamellae (10) in the row of lamellae (10) are of straight design.

5. Jet regulator (1) according to one of claims 1-3, wherein the jet regulator (1) has a housing (3) and a locking element (4) movably arranged on the housing (3), wherein the locking element (4) is acted upon by a spring element (5) accessible from outside the fitting outlet (2) and protrudes beyond the housing (3) in its rest position in order to hold the jet regulator (1) in the fitting outlet (2), wherein a tool (6) is inserted into the fitting outlet (2) in an insertion direction (7) for removal, and wherein the spring element (5) is designed and / or arranged such that it can be acted upon by a tool (6) inserted in an insertion direction (7) into the valve outlet (2) during insertion until the locking element (4) releases the jet regulator (1).

6. Jet regulator (1) according to one of claims 1-3, having a jet acceleration unit (15) which has a seal (16) on the outside which extends around a flow direction (18), and on the downstream side of which the lamellae (10) are arranged, which lamellae extend transversely to the flow direction (18), characterized in that the lamellae (10) each have a free end (19) with which they project from a support wall (20) extending along the flow direction (18).

7. Jet regulator (1) according to the preceding claim, characterized in that the jet acceleration unit (15) is formed at an inflow end of a jet ventilation region (21), in particular as a perforated plate (26) and / or as a diffuser-diffuser ring combination.

8. Jet regulator (1) according to one of the preceding claims, characterized by an elongated, non-circular outer contour transversely to the direction of flow (18), in particular and dependent in this case on claim 6, wherein the free ends (19) of the jet-forming elements (17) and / or the support wall (20) are arranged in each case on a long side of the outer contour.

9. Jet regulator (1) according to claim 6 or according to one of claims 7 or 8 referring back to at least claim 6, characterized in that the free ends (19) form a laterally open region (24) in a peripheral wall, in particular wherein the jet-forming elements (17) end at a uniform height.

10. Jet regulator (1) according to claim 5 or one of claims 6 to 9 referring back to claim 5, characterized in that the locking element (4) is guided in a guide (41) formed by the housing (3), in particular wherein the guide (41) is designed as a plain bearing (38) and / or wherein the locking element (4) is adjustable by the guide (41) in one degree of freedom, preferably is adjustable in a straight line.

11. Jet regulator (1) according to claim 5 or one of claims 6 to 10 referring back to at least claim 5, characterized in that at least one stop (42) is formed on the housing (3), which is acted upon by a corresponding counter-stop (43) on the locking element (4) in a locking position, in particular wherein the stop (42) defines the maximum extent to which the locking element (4) protrudes from the housing (3).

12. Jet regulator (1) according to claim 5 or one of claims 6 to 11 referring back to at least claim 5, characterized in that the locking element (4) and / or the spring element (5) is / are formed separately from the housing (3).