JET REGULATOR

Abstract

It is provided for an insert (1) that the overall cross section of the aeration ducts (9, 18, 22, 23) of a jet aeration unit (3) is reduced by a ratio to the outer circumference of a mixing chamber (6) so that an air flow captures a leakage flow on the seal-free outer circumference of the insert (1) and transports the same into the mixing chamber (6). (FIG. 1)

Claims

1. A sanitary insert (1), comprising: a jet aeration unit (3), which includes; a mixing chamber (6), the mixing chamber (6) includes at least one aeration opening (7), at least one aeration duct (9, 18, 22, 23) formed outside the mixing chamber (6), the at least one aeration duct (9, 18, 22, 23) configured to feed air from outside into the mixing chamber (6) via the at least one aeration opening (7), and the at least one aeration duct (9, 18, 22, 23) has two inlet openings (16, 17) that are separate from one another, and one of the inlet openings (16, 17) opens laterally and one of the inlet openings (16, 17) opens in a longitudinal direction (21) of the insert.

2. The sanitary insert (1) as claimed in claim 1, wherein the at least one aeration duct comprises at least two separate aeration ducts (9, 18, 22, 23) that are formed so as to be adjacent in a circumferential direction, each connecting to one of the aeration openings, or the aeration duct (9, 18, 22, 23) extends over the outer circumference and is connected to two of the aeration openings (7).

3. The sanitary insert (1) as claimed in claim 1, further comprising a housing (2), and one of the inlet openings (16, 17) is arranged downstream from an outer thread (20) formed on a housing (2).

4. The sanitary insert (1) as claimed in claim 1, further comprising an outlet face, and one of the inlet openings (16, 17) is formed on an outlet face side (11) of the insert.

5. The sanitary insert (1) as claimed in claim 1, wherein the at least one aeration duct comprises a plurality of aeration ducts (9, 18, 22, 23) that are arranged so as to be evenly distributed in a circumferential direction.

6. A sanitary insert (1), with comprising: a jet aeration unit (3), which includes a mixing chamber (6), the mixing chamber (6) includes at least one aeration opening (7), a first aeration duct formed outside the mixing chamber (6), the first aeration duct feeding air from outside to the mixing chamber (6) via the at least one aeration opening (7), a second aeration duct (22) arranged directly adjacent to the first aeration duct (9) in a circumferential direction at a first distance (24), a third aeration duct (18) arranged directly adjacent to the first aeration duct (9) in the circumferential direction at a second distance (26), and at least one of the first distance (24) or the second distance (26) is greater than a width in the circumferential direction of at least one of the first, second or third aeration duct (18).

7. A sanitary insert (1), comprising: a jet aeration unit (3), which includes a mixing chamber (6), the mixing chamber (6) includes at least one aeration opening (7), a first aeration duct formed outside the mixing chamber (6), the first aeration duct guiding air from outside to the mixing chamber (6) via the at least one aeration opening (7), a second aeration duct (22) arranged directly adjacent to the first aeration duct (9) in a circumferential direction at a first distance (24), a third aeration duct (18) arranged directly adjacent to the first aeration duct (9) in the circumferential direction at a second distance (26), and the first distance (24) is greater than the second distance (26).

8. The sanitary insert (1) as claimed in claim 7, wherein the second distance (26) is greater than width in the circumferential direction of the first aeration duct (9).

9. The sanitary insert (1) as claimed in claim 7, wherein the first distance (24) is smaller than width in the circumferential direction of the first aeration duct (9).

10. The sanitary insert (1) as claimed in claim 7, wherein at least one of (a) the mixing chamber (6) is closed to the outside between the aeration ducts or (b) two of the aeration ducts adjacent in the circumferential direction are separated from one another by a dividing wall (27).

11. The sanitary insert (1) as claimed in claim 7, wherein at least one of the aeration ducts has a lateral inlet opening, and a width in the circumferential direction of the first aeration duct (9) is aligned with a width of the lateral open inlet opening.

12. A sanitary insert (1), comprising a jet aeration unit (3), which includes a mixing chamber (6), the mixing chamber (6) includes at least one aeration opening (7), at least aeration duct (9, 18, 22, 23) formed outside the mixing chamber (6), the at least aeration duct (9, 18, 22, 23) feeding air from outside to the mixing chamber (6) via the at least one aeration opening (7) the at least one aeration duct (9, 18, 22, 23) has two inlet openings (16, 17) that are separate from one another, a ratio of a sum of lengths covered by the aeration ducts (9, 18, 22, 23) in the circumferential direction measured at a level of one of the two inlet openings (16, 17), to a total length of an outer circumference of the mixing chamber (6), measured at the level of said one of the two inlet openings (16, 17), is at most 60%.

13. The sanitary insert (1) as claimed in claim 12, further comprising a jet splitter (4) forming at least one nozzle (5) arranged upstream of the mixing chamber (6).

14. The sanitary insert (1) as claimed in claim 12, further comprising at least one of flow regulator arranged upstream of the mixing chamber (6) or an outlet screen arranged downstream of the mixing chamber (6).

15. The sanitary insert (1) as claimed in claim 12, wherein a laterally open one of the inlet openings of the aeration duct (9, 18, 22, 23) is connected to a catch space (31) that is closed to the outside at least in a position of use.

16. The sanitary insert (1) as claimed in claim 12, wherein the at least one aeration duct (9, 18, 22, 23) is formed so as to be closed to the outside on a circumference side of the insert.

17. A sanitary insert (1), comprising: a jet aeration unit (3), which includes a mixing chamber (6), the mixing chamber (6) includes at least one aeration opening (7), at least one aeration duct (9, 18, 22, 23) formed outside the mixing chamber (6), the at least one aeration duct (9, 18, 22, 23) guiding air from outside into the mixing chamber (6) via the at least one aeration opening (7), the aeration duct (9, 18, 22, 23) has a cross section that is dimensioned so that, in the event of a water working pressure on the inflow side between 1 to 2 bar, an air flow speed of at least 15 km/h occurs in the aeration duct.

18. The sanitary insert (1) as claimed in claim 17, further comprising at least one trickle path (34) that empties into the aeration duct (9, 18, 22, 23), the trickle path (34) running over an outer thread (20) on the insert on an outer circumference side.

19. A method of aerating a flow using the sanitary insert according to claim 17, the method comprising capturing leakage flows by attaching the insert on a sanitary faucet, in that a ratio of a sum of lengths covered in the circumferential direction by the aeration ducts (9, 18, 22, 23) to a total length of an outer circumference of the mixing chamber (6) at that a measurement level is at most 60%.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The invention will now be described with the help of an example embodiment in greater detail, but is not limited to this example embodiment. Further example embodiments result from a combination of the features of individual or a plurality of claims with one another and/or with individual or a plurality of features of the example embodiment.

[0043] The figures show:

[0044] FIG. 1 a sanitary insert in accordance with the invention in a partially sectional, three-dimensional perspective view,

[0045] FIG. 2 the insert of FIG. 1 in a view of the outlet face side from below,

[0046] FIG. 3 the insert of FIG. 1 with the inner parts and sediment sieve removed in a partially sectional, three-dimensional perspective view,

[0047] FIG. 4 a view of the insert of FIG. 1 for illustrating the position of the section in FIG. 3,

[0048] FIG. 5 the insert of FIG. 1 with the inner parts and sediment sieve removed in a further partially sectional, three-dimensional perspective view,

[0049] FIG. 6 a view of the insert of FIG. 1 for illustrating the position of the section in FIG. 3,

[0050] FIG. 7 the insert of FIG. 1 with the inner parts and sediment sieve removed and jet splitter in a further partially sectional, three-dimensional perspective view,

[0051] FIG. 8 two views of the insert for illustrating the position of the section in FIG. 7,

[0052] FIG. 9 the insert of FIG. 1 with the inner parts and sediment sieve removed in a further partially sectional, three-dimensional perspective view,

[0053] FIG. 10 two views of the insert for illustrating the position of the section in FIG. 7,

[0054] FIG. 11 the insert of FIG. 1 with the inner parts and sediment sieve removed in a further partially sectional, three-dimensional oblique view, and

[0055] FIG. 12 two views of the insert for illustrating the position of the section in FIG. 11.

DETAILED DESCRIPTION

[0056] The figures are described in the following together.

[0057] A sanitary insert designated as a whole by 1 has in a known manner a housing 2, in which a jet aeration unit 3 is formed. The jet aeration unit 3 has a jet splitter 4, which includes nozzles 5. In the example embodiment, the jet splitter 4 includes a perforated plate 33, which provides the nozzles 5. In other example embodiments, the jet splitter has a diffuser with a diffuser ring known per se, which provides a ring nozzle.

[0058] A mixing chamber 6 is arranged downstream of the jet splitter 4. The water exiting through the nozzles 5 creates a negative pressure in the mixing chamber 6 by which air enters via aeration openings 7 formed in a wall 8 of the mixing chamber 6.

[0059] At least one aeration duct 9 is formed outside the mixing chamber 6. Each aeration duct 9 is connected to a corresponding aeration opening 7.

[0060] Each aeration duct 9 thus feeds air from outside via a corresponding aeration opening 7 into the mixing chamber 6. There, the introduced air mixes with the water exiting the nozzles 5 in order to create a water-air mixture.

[0061] Arranged downstream from the mixing chamber 6 is a plurality of jet formers 10 by which the aerated jet is shaped before it leaves the outlet face side 11.

[0062] In the example embodiment, the jet former 10 is formed by two insert screens 12, 13 and an aligning outlet screen 14. In other example embodiments, other quantities and shapes of inner parts and outlet structures are realized.

[0063] In the example embodiment shown, a sediment sieve 15 covers the jet splitter 4 on the inflow side.

[0064] In other example embodiments, a flow regulator or a throttle or a further functional element can be arranged between the sediment sieve 15 and the jet splitter 4.

[0065] It is apparent in particular in FIG. 9 that each aeration duct 9 includes two inlet openings 16, 17 that are separate from one another. A Y-shaped topology of the aeration duct 9 is thus created, which brings the inlet openings 16, 17 together and leads to the corresponding aeration opening 7.

[0066] The main flow of the aeration duct 9 is sucked in here through the axial inlet opening 17, while only a small portion of air enters the aeration duct 9 through the lateral inlet opening 16 during use.

[0067] By a comparison of FIGS. 3 and 5, it is apparent that at least two aeration ducts 9, 18 that are separate from one another are formed next to one another in the circumferential direction.

[0068] An outer thread 20 is formed in the housing 2 on an outer circumference side 19 of the insert 1. By the outer thread 20, the insert 1 can be screwed into an outlet of a sanitary faucet. In a further example embodiment, the outer thread is formed on a holding sleeve of a housing 2 that is itself not threaded.

[0069] One of the inlet openings 16 is arranged downstream from the outer thread 20 and opens laterally.

[0070] The other inlet opening 17 of the two inlet openings 16, 17 is formed on the outlet face side 11 of the insert 1 and opens in a longitudinal direction 21 of the insert 1.

[0071] The in total four aeration ducts 9, 18, 22, 23 are arranged so as to be distributed unevenly in the circumferential direction.

[0072] The aeration duct 9 can be considered as the first aeration duct, the aeration duct 22 as the second aeration duct, the aeration duct 18 as the third aeration duct and the aeration duct 23 as the fourth aeration duct.

[0073] The second aeration duct 22 is directly adjacent to the first aeration duct 9 in the circumferential direction. The third aeration duct 18 is also directly adjacent to the first aeration duct 9 in the circumferential direction.

[0074] A first distance 24 in the circumferential direction (measured, for example, as an angle or an arc length) between the first aeration duct 9 and the second aeration duct 22 is more than twice as great as a width 25 in the circumferential direction of the aeration opening 7 here. The corresponding second distance 26 between the first aeration duct 9 and the third aeration duct 18, on the other hand, is less than half as great as the width 25 and thus clearly smaller than the first distance 24.

[0075] Overall, an arrangement of aeration ducts 9, 18, 22, 23 results that has the symmetry of two intersecting mirror planes.

[0076] The mixing chamber 6 is closed off to at its outer circumference between the aeration ducts 9, 18, 22, 23. The adjacent aeration ducts 9, 18 are separated from one another by a dividing wall 27.

[0077] Two blind ducts 28 are respectively formed between the aeration ducts 9 and 22 on one side and 18 and 23 on the other, which, although open on the outlet face side 11, are otherwise formed so as to be closed. An extremely symmetrical arrangement is thus achieved on the outlet face side 11, cf. FIG. 2.

[0078] The aeration ducts 9, 18, 22, 23 respectively have a uniform width 29 in the circumferential direction along their course. This width 29 in the circumferential direction is aligned with a width 30 of the laterally open inlet opening 16.

[0079] A ratio of a sum of the lengths (for example, as an angle or arc length), which are covered at a level of the inlet openings 16 by the four aeration ducts 9, 18, 22, 23, to the total length of the outer circumference of the mixing chamber 6 (measured, for example, externally on the wall 8), also measured at the level of the inlet openings 16, is approximately 31%.

[0080] Adjoining the wall 8 of the housing 2 on the side of its outer circumference is a catch space 31, which, in a position of use, is closed off to the outside from a sanitary faucet by a sealing element 32 here a circumferential lip seal.

[0081] Each laterally open inlet opening 16 of each aeration duct 9, 18, 22, 23 is connected to the catch space 31 so that water trickling through the outer thread 20 can exit from the respective inlet opening 16 into the corresponding aeration duct 9, 18, 22, 23.

[0082] Each of the aeration ducts 9, 18, 22, 23 is formed so as to be closed off to the outside on a circumference side of the insert 1.

[0083] Each aeration duct 9, 18, 22, 23 has a cross section that is dimensioned so that, in the event of a water working pressure on the inflow side before the jet splitter 4 between 1 to 2 bar or in the event of a loss in pressure of 1 to 2 bar above the jet splitter 4, an air flow speed of at least 17 km/h occurs in each aeration duct 9, 18, 22, 23 at the level of the laterally open inlet window 16.

[0084] The water exiting from the first inlet openings 16 into the respective aeration duct 9, 18, 22, 23 can thus be captured and transported into the mixing chamber 6. There, the entrained water mixes with the water flowing from the nozzles 5.

[0085] Each internal thread of the outer thread 20 forms a trickle path 34, through which water can trickle from the inflow side during use, as no washer is provided. This water is captured in the catch space 31 and fed through the first inlet openings 16 and the aeration ducts 9, 18, 22, 23 to the mixing chamber 6 so that no leaking water on the side of the insert 1 can exit the sanitary faucet during use.

[0086] The example embodiment thus realizes in the operational position a use of an aeration duct 9, 18, 22, 23 on a sanitary insert 1, which leads via an aeration opening 7 into a mixing chamber 6 of a jet aeration unit 3 of the sanitary insert 1, for capturing leakage flows by an attachment of the insert 1 on a sanitary faucet.

[0087] The above-described ratio of a sum of all lengths covered by all aeration ducts 9, 18, 22, 23 in the circumferential direction at a level of the inlet openings 16 capturing the leakage flow to a total length of an outer circumference of the mixing chamber 6 at that level is approximately 31% here.

[0088] It is thus provided that for an insert 1 in accordance with the invention that the overall cross section of the aeration ducts 9, 18, 22, 23 of a jet aeration unit 3 is reduced by a ratio to the outer circumference of a mixing chamber 6 so that an air flow captures a leakage flow on the seal-free outer circumference of the insert 1 and transports the same into the mixing chamber 6.

LIST OF REFERENCES

[0089] 1 Sanitary insert

[0090] 2 Housing

[0091] 3 Jet aeration unit

[0092] 4 Jet splitter

[0093] 5 Nozzle

[0094] 6 Mixing chamber

[0095] 7 Aeration opening

[0096] 8 Wall

[0097] 9 (First) aeration duct

[0098] 10 Jet former

[0099] 11 Outlet face side

[0100] 12 Insert screen

[0101] 13 Insert screen

[0102] 14 Outlet screen

[0103] 15 Sediment sieve

[0104] 16 Inlet opening

[0105] 17 Inlet opening

[0106] 18 (Third) aeration duct

[0107] 19 Outer circumference side

[0108] 20 Outer thread

[0109] 21 Longitudinal direction

[0110] 22 (Second) aeration duct

[0111] 23 (Fourth) aeration duct

[0112] 24 (First) distance

[0113] 25 Width of 7

[0114] 26 (Second) distance

[0115] 27 Dividing wall

[0116] 28 Blind duct

[0117] 29 Width of 9, 18, 22, 23

[0118] 30 Width of 16

[0119] 31 Catch space

[0120] 32 Sealing element

[0121] 33 Perforated plate

[0122] 34 Trickle path