Sanitary insert and corresponding use

Abstract

The invention relates to a sanitary insert (1), characterized in that a flow obstacle (10) is provided in an inner water path (8) and deflects at least part of the flow in a lateral direction.

Description

[0001] The invention relates to a sanitary insert with at least two water channels, wherein an outer water channel surrounds an inner water channel.

[0002] These sanitary components are used, for example, as a flow shaper and / or aerator in the spout of a sanitary fitting. The two water channels can, for instance, direct different types of water to the spout. Examples of different water types include: mixed water and cooking water, tap water and enriched water, mixed water and chilled water. Other examples are possible.

[0003] From WO 2013 / 162359 Al, a tap with a spout having a first channel and a second channel, and a jet aerator with a jet aerator housing forming a downstream end of the spout is known.

[0004] From GB 2 525 504 A, an atomizing nozzle for controlling a water flow from a tap is known, consisting of a housing with an inlet, a first and a second outlet, as well as a first and a second flow path from the inlet to the respective outlet.

[0005] From DE 20 2018 103 156 Ul a water outlet device for arrangement on a tap with at least one first and at least one second outlet opening is known.

[0006] From US 2017 / 355980 A1, a dual-flow switching device is known which has a dual-flow outflow channel and a dual-flow outflow function.

[0007] The invention further relates to a use of a sanitary insert.

[0008] The invention is based on the objective of improving the performance characteristics of a sanitary insert of the type described.

[0009] To solve the aforementioned problem, the features of claim 1 are provided. According to the invention, it is thus proposed that, in a sanitary insert of the type described above, a flow obstruction is formed in the inner water channel, which at least partially generates a laterally directed flow, in particular a radial flow, wherein the flow obstruction has laterally directed outlet openings. This makes it possible to ensure that the flow of the inner water channel widens radially and, for example, forms a jet width that matches the flow of the outer water channel. The formation of a flow obstruction can also prevent a pressure drop upstream of the insert due to backflow from becoming too great. Large pressure drops can occur, for example, when conveying boiling water, i.e., (superheated) liquid water with a temperature above 100°C (or...).(above the atmospheric boiling point), causing undesirable steam generation. This can lead to an uneven, jerky flow.

[0010] According to the invention, the flow obstruction has laterally directed outlet openings. This provides a simple means of generating a laterally directed flow. For example, the laterally directed outlet openings can be radially oriented. A radial flow can thus be achieved.

[0011] According to the invention, the flow obstruction has forward-facing outlet openings. This allows a portion of the flow in the internal water channel to escape unimpeded or almost unimpeded. In this way, for example, a desired backflow behavior can be easily adjusted or reduced.

[0012] For example, the forward-facing outlet openings can be axially aligned. This allows for the generation of an axial flow.

[0013] The combination of laterally directed outlet openings and forward-directed outlet openings, for example axially directed ones, makes it possible to fill a downstream mixing chamber effectively. The mixing chamber can have a greater internal width than the water flow path.

[0014] In an advantageous embodiment, the flow obstruction can be designed in a pot shape. This makes it easy to create outlet openings facing both sideways and forwards.

[0015] In an advantageous embodiment, a mixing chamber can be provided downstream of the flow obstruction, in which the outer and inner water flows are combined. This allows for a uniform or at least comparable jet pattern for both water flows.

[0016] In an advantageous embodiment, the mixing chamber can be defined by a common outlet structure for the at least two water channels. This allows for a common, identical, or at least comparable jet shape for the at least two water channels.

[0017] In an advantageous embodiment, a baffle plate can be arranged downstream of the flow obstruction. This allows the water to be calmed.

[0018] It can be arranged that the forward-facing outlet openings are directed towards the baffle plate. This prevents the forward-facing flow from exiting the insert unimpeded.

[0019] In an advantageous embodiment, the mixing chamber may be provided with at least one ventilation window. This can allow the inflow of drawn-in air to enrich a water jet with air bubbles.

[0020] In an advantageous embodiment, at least one acceleration nozzle can be provided in the outer water channel at the inlet to the mixing chamber. This allows an aerated jet to be generated in the outer water channel.

[0021] In an advantageous embodiment, a baffle may be provided that surrounds and / or encloses the flow obstruction. This allows for the shaping of the outgoing water jet. The baffle may also cover the ventilation openings for the lateral flow, thus preventing the lateral flow from escaping through at least one ventilation opening.

[0022] In an advantageous embodiment, a grid insert can be arranged in the mixing chamber. This improves the mixing process.

[0023] The grid insert can be designed with a central hole larger than the opening of the inner water channel into the mixing chamber. This prevents the flow of the inner water channel from being directed onto the grid insert. This can be advantageous, for example, when cooking water is circulating in the inner water channel. Another advantage is that it reduces the recombination of the jet within the channel, allowing for the creation of specific jet patterns.

[0024] In an advantageous embodiment, a grid insert can be arranged in the mixing chamber. This can promote thorough mixing within the mixing chamber.

[0025] The impact plate can be designed to be attached to a grid insert, particularly the one already mentioned. This allows for a simple provision of the impact plate. Additional parts for arranging or attaching the impact plate are unnecessary, and assembly steps are avoided.

[0026] In an advantageous embodiment, a sleeve forming the inner water channel can be clipped into the outer water channel of a disassembly unit, which forms at least one acceleration nozzle, in particular the at least one already described. This allows for simple assembly while maintaining high mechanical stability.

[0027] In an advantageous embodiment, the internal water channel can be designed to form a sleeve at its inlet for inserting a connecting pipe. This allows the connecting pipe to be attached without pipe clamps or additional connecting elements.

[0028] In an advantageous embodiment, the sleeve and the flow obstruction can be integrally joined. This allows for simple manufacturing, and the flow obstruction is reliably and tightly sealed. It is even possible for the sleeve to be integrally joined with the cuff.

[0029] An advantage of this design is that leakage into the outer channel can be avoided. Undesirable heating of the fitting during operation is therefore avoided or at least reduced.

[0030] An advantageous application of the invention relates to the use of a sanitary insert according to the invention, as described above and / or according to one of the claims directed to a sanitary insert, for conveying cooking water or treated water.

[0031] Besides cooking water, other treated waters are also possible. For example, filtered, chilled, carbonated, or flavored and colored waters such as lemonade, juices, etc. A key advantage is that outgassing can be delayed. The insert according to the invention is therefore universally applicable.

[0032] For example, the external water channel can be used to convey mixed water.

[0033] The invention will now be described in more detail with reference to an exemplary embodiment, but is not limited to this embodiment. Further exemplary embodiments result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiment.

[0034] It shows: Figure 1 shows a sanitary insert according to the invention in a three-dimensional oblique view on an inflow side, Figure 2 shows the sanitary insert made of Figure 1 in an axial section, Figure 3 the sanitary insert made of Figure 1 in a top view of the inflow side to show the position of the section plane Figure 2 , Figure 4 the sanitary insert made of Figure 1 Figure 5 shows an axially cut, three-dimensional oblique view, an axial section through a part of a sanitary fitting to illustrate the operating position of the sanitary insert part. Figure 1, Figure 6 the sanitary insert made of Figure 1 in a three-dimensional exploded view looking at the inflow side and Figure 7 the sanitary insert made of Figure 1 in a three-dimensional exploded view looking at the outflow side.

[0035] The Figures 1 to 7 will be described together below.

[0036] A sanitary insert, designated as a whole by 1, is exemplified as a jet shaper and / or jet regulator 2 and is used for the in Figure 5 The shown position of use is inserted into an outlet pipe 3 of a sanitary fitting 4, for example held by other parts, screwed in or clipped in.

[0037] Figure 5 Figure 1 shows an example of the attachment of the sanitary insert 1 with a nozzle 44, which is attached to the outlet pipe 3 by means of a screw connection 43. A seal 42 provides an external seal.

[0038] An inlet side 5 and an outlet side 6 of the sanitary insert 1 are connected by two water channels 7, 8, which are separated from each other section by sections and connected in parallel. The water from both water channels 7, 8 thus exits from the outlet 9 of the sanitary fitting 4.

[0039] Here, an outer water channel 7 is designed to surround or enclose the second, inner water channel 8. Each of the water channels 7 and 8 thus forms a channel. In the outer water channel 7, the water flows along an outer flow path 39, and in the inner water channel 8 along an inner flow path 38.

[0040] The outer water supply 7 is fed from an outer water pipe 36 in the outlet pipe 3, the inner water supply 8 is fed from an inner water pipe 37. The water pipes 36 and 37 run separately to assigned valves (not shown).

[0041] In the inner water channel 8, a flow obstruction 10 is arranged, which represents an additional flow resistance for the flowing water.

[0042] This flow obstruction 10 is designed in such a way that a sideways flow 11 is generated, through which the water flow of the inner water channel 8 widens.

[0043] In the illustrated embodiment, the flow 11 is a radial flow; however, in other embodiments, flows are generated in other laterally directed directions oriented transversely to the longitudinal axis.

[0044] The described widening results in a jet with a jet width 13, which is equal to the jet width of the flow through the outer water guide 7.

[0045] The flow obstruction 10 creates a backflow on the inlet side 5, which leads to a reduced pressure drop in the outlet pipe 3. This prevents steam bubbles from forming in the outlet pipe 3 when the superheated water expands. This superheating ensures that the boiling water exiting the outlet 9 is close to 100°C.

[0046] The flow obstruction 10 is pot-shaped and has laterally directed outlet openings 15 in its pot wall 14. These outlet openings 15 create a deflection of part of the liquid in the inner water channel 8 in a radial or lateral direction.

[0047] The flow obstruction 10 also has forward-directed, here axial, outlet openings 17 in its pot base 16.

[0048] The inner flow path 38 thus divides into a sideways (here radial) flow 11 and a forward (here axial) flow 40.

[0049] Downstream of the flow obstruction 10, a mixing chamber 18 is formed into which both water channels 7 and 8 flow. The mixing chamber has a greater clear width (measured perpendicular to the longitudinal axis 12) than the inner water channel 8.

[0050] An outlet structure 19 limits the mixing chamber 18 to the outside and especially on the outflow side 6.

[0051] Below the flow obstruction 10 a baffle plate 20 is formed, which is subjected to the flow through the forward-facing outlet openings 17.

[0052] The mixing chamber 18 has at least one ventilation window 21 through which air can be drawn into the mixing chamber 18. This results in an aerated water jet containing air bubbles. The ventilation windows 21 are formed on the cup-shaped lower part 45 of the sanitary insert 1.

[0053] To generate a negative pressure in the mixing chamber 18, through which air is drawn in via the ventilation windows 21, 7 acceleration nozzles 22 are formed in a perforated plate 23 in the outer water channel. The perforated plate 23 is part of a disassembly unit 30, which is snapped or clipped to the lower part 45.

[0054] A circumferential baffle 24 is formed between the laterally directed outlet openings 15 and the ventilation windows 21. This baffle 24 has a dimension along its longitudinal axis that covers the ventilation windows 21 for the laterally directed flow 11.

[0055] In the mixing chamber 18, at least one grid insert 25, 41 is also arranged, which divides the jets in the water channels 7, 8 and thus leads to an improved mixing of the air with the water.

[0056] The grid insert 25 has a central hole 26, which prevents direct flow through the inner water channel 8. The dimension 27 of an opening 28 of the inner water channel 8 is smaller than the dimension of the central hole 26.

[0057] The impact plate 20 already mentioned is formed in one piece with the second grid insert 41.

[0058] On the inflow side, the inner water guide 8 has a sleeve 29 which is clipped into a disassembly unit 30, here a perforated plate 23.

[0059] In this process, the plate-shaped disassembly unit 30 is clamped between a stop 31 and a locking projection 32.

[0060] On the inlet side, the sanitary insert 1 has a sleeve 33 in the inner water channel 8, into which the connecting line 34 or a connecting pipe is inserted. The connecting line 34 or the connecting pipe can carry a sealing ring 35, which seals against the sleeve 33.

[0061] The cuff can also be integrally connected to the disassembly unit 30. Whether it is separated or connected depends on the proportions and manufacturing process used.

[0062] In an advantageous application of the invention, boiling water flows in the inner water channel 8, which can be heated to over 100°C by a high operating pressure in the inner water channel 8 without evaporating. Mixed water from a mixing cartridge (not shown) flows in the outer water channel 7.

[0063] For the sanitary insertion part 1, it is therefore proposed to form a flow obstruction 10 in an internal water channel 8, through which part of the flow is deflected in a lateral direction. Reference symbol list

[0064] 1 Sanitary insert 2 Jet shaper and / or aerator 3 Outlet pipe 4 Sanitary fitting 5 Inlet side 6 Outlet side 7 (Outer) water guide 8 (Inner) water guide 9 Outlet 10 Flow obstruction 11 Sideways flow 12 Longitudinal axis 13 Jet width 14 Pot wall 15 (Sideways) outlet opening 16 Pot bottom 17 (Forward) outlet opening 18 Mixing chamber 19 Outlet structure 20 Baffle plate 21 Ventilation window 22 Acceleration nozzle 23 Perforated plate 24 Cover plate 25 Grid insert 26 Central hole 27 Dimension 28 Outlet (of the inner water guide) 29 Sleeve 30 Disassembly unit 31 Stop 32 Detent 33 Sleeve 34 Connection pipe 35 Sealing ring 36 (outer) water pipe 37 (inner) water pipe 38 (inner) flow path 39 (outer) flow path 40 forward flow 41 (second) grid insert 42 Seal 43 Screw connection 44 Nozzle 45 Base

Claims

1. Sanitary insert (1), having at least two water conduits (7, 8) that conduct different waters to the outlet (9), wherein an outer water conduit (7) surrounds an inner water conduit (8), wherein a flow obstacle (10) is formed in the inner water conduit (8), which has forward-facing outlet openings (17), characterized in that the flow obstacle (10) at least partially generates a sideways flow (11), and in that the flow obstacle (10) has sideways-facing outlet openings (15).

2. Sanitary insert (1) according to claim 1, characterized in that the sideways-facing outlet openings (15) of the flow obstacle (10) are radial outlet openings (15) and / or the forward-facing outlet openings (17) of the flow obstacle (10) are axial outlet openings (17).

3. Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstacle (10) is of pot-shaped design.

4. Sanitary insert (1) according to one of the preceding claims, characterized in that a mixing chamber (18) is formed downstream of the flow obstacle (10), in which the outer water conduit (7) and the inner water conduit (8) are brought together, in particular wherein the mixing chamber (18) has a larger clear width than the inner water conduit (8).

5. Sanitary insert (1) according to claim 4, characterized in that the mixing chamber (18) is bounded by a common outlet structure (19) for the at least two water conduits (7, 8).

6. Sanitary insert (1) according to one of the preceding claims, characterized in that a baffle plate (20) is arranged downstream of the flow obstacle (10).

7. Sanitary insert (1) according to one of claims 2 to 5, characterized in that a baffle plate (20) is arranged downstream of the flow obstacle (10), wherein the forward-facing outlet openings (17) are directed toward the baffle plate (20).

8. Sanitary insert (1) according to claim 4 or a claim dependent on claim 4, characterized in that the mixing chamber (18) has at least one ventilation window (21).

9. Sanitary insert (1) according to claim 4 or a claim dependent on claim 4, characterized in that at least one acceleration nozzle (22) is formed in the outer water conduit (7) at the inlet to the mixing chamber (18).

10. Sanitary insert (1) according to one of the preceding claims, characterized in that a baffle (24) surrounding the flow obstacle (10) is formed, in particular one that forms an emerging jet.

11. Sanitary insert (1) according to claim 8 or claim 9 dependent on claim 8, characterized in that a baffle (24) surrounding the flow obstacle (10) is formed, which covers the at least one ventilation window (21) for the radial flow and in particular forms an outgoing jet.

12. Sanitary insert (1) according to claim 4 or a claim dependent on claim 4, characterized in that a grid insert (25, 41) is arranged in the mixing chamber (18), in particular wherein its central hole (26) is larger than a dimension (27) of an opening (28) of the inner water supply into the mixing chamber (18).

13. Sanitary insert (1) according to one of the claims 6 or 7 dependent on claim 4 or according to one of the claims 8 to 11 dependent on one of these claims 6 or 7, characterized in that a grid insert (25, 41) is arranged in the mixing chamber (18), wherein the baffle plate (20) is formed on the grid insert (25, 41), in particular wherein a central hole (26) of the grid insert (25, 41) is larger than a dimension (27) of an opening (28) of the inner water conduit into the mixing chamber (18).

14. Sanitary insert (1) according to one of the preceding claims, characterized in that a sleeve (29) forming the inner water conduit (8) is clipped into a disperser unit (30) forming at least one acceleration nozzle (22) in the outer water conduit (7).

15. Sanitary insert (1) according to one of the preceding claims, characterized in that the inner water conduit (8) forms a collar (33) at its inlet for inserting a connecting pipe (34).

16. Sanitary insert (1) according to claim 14 or a claim dependent on claim 14, characterized in that the sleeve (29) and the flow obstacle (10) are integrally connected.

17. Sanitary insert (1) according to claim 15, insofar as this is dependent on claim 14, characterized in that the sleeve (29) with the collar (33) and the flow obstacle (10) are integrally connected.

18. Use of a sanitary insert (1) according to one of the preceding claims, wherein the inner water conduit (8) is used for the passage of cooking water.

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