EP3872271B1 - Water outlet fitting with extensible dish rinser - Google Patents

Description

The invention relates to a water outlet fitting with a pull-out dish spray, having the features of the preamble of claim 1.

Such a water outlet fitting is used in particular as a kitchen faucet z. B. is arranged next to a sink. The mixed water line initially extends from a mixer unit in the base housing of the fitting to below the assembly level. Below this, it continues as a hose that is routed back to the base housing of the fitting and extends through the base housing of the fitting and a swiveling spout to the hand spray, which is inserted into a holder at the end of the spout and can be removed from there. With the pull-out spout, objects in the sink, or the sink itself, can be cleaned more easily than with a fixed water spout.

The disadvantage of the known kitchen faucet is the cumbersome installation. The tap hole diameter in the worktop, in the sink, etc. is predetermined and therefore limited and possibly even further reduced by the mounting sleeve to be connected to the fitting. A hose that has the necessary pressure and kink resistance to last a long time However, to ensure safe operation of the fitting without leaks, the bending radius is too large, so that the hose bend does not fit through the tap hole or the mounting sleeve. It is therefore necessary to first detach the hose from the fitting, insert it in one strand through the tap hole, and then anchor it again in the fitting body from below the mounting surface by hanging it in, screwing it in, etc. In addition, a cold and a hot water supply line must also be accommodated in the cross-section available for the implementation. All of this work for making the hose connections must be made in a confined space, possibly inside a kitchen base cabinet.

US 201808/0178935 A1 shows an arrangement in which a pull-out spray is provided, which is arranged separately from an outlet fitting and/or a mixing valve. The mixed water line coming from the mixing valve is divided at a Y-shaped flow divider element into one line that leads to the outlet fitting and another line that leads to the pull-out spray. The hoses must be connected below the sink so that assembly is not made easier.

At an in EP 3228764 A1 disclosed water outlet fitting both a pull-out auxiliary spray and the main outlet are each supplied via a hose. A flow divider element is provided to split the mixed water flow. The flow divider element with the attached hoses is too big to be pushed through the tap hole. Therefore, hose connections have to be made below the assembly level in a cumbersome manner.

Also the in US20070235091A1 The fitting shown provides such a flow divider element, so that the fitting cannot be installed in a tap hole without first loosening the hose connections.

The object of the invention is therefore to improve a water outlet fitting with a pull-out spray gun in such a way that assembly is made easier.

This problem is solved by a water outlet fitting with the features of claim 1.

Because according to the invention a hose bend is created in the mixed water line, the width of which is independent of the bending radius of the hose used, the mixed water line can be completely preassembled. For the pull-out shower, it then consists of two hose sections lying next to one another, which are connected to an inner deflection channel via a deflection element. In addition, the size of the diverter must be related to the size of the fitting and the tap hole. If you look at a cross-sectional plane of the tap hole, the projected outer peripheral surface of the deflection element together with the hose sections attached to it must be smaller than the tap hole or than a mounting sleeve that is to be connected to the fitting housing and that can be inserted into the tap hole.

In addition, there is preferably a cold water supply line and a hot water supply line. There are then at least two lines and two hose sections that can be bundled together, i.e. placed so close together, that they can all be pushed through a common opening on the body of the fitting, from the top, i.e. from the side of a sink or a worktop on which the fitting is placed.

The deflection element is either a rigid part, for example made of thermoplastic material, which can be inserted through the available opening without deformation, or it is easily deformable so that it fits through the opening in the deformed state, but the Deformation must be reversible in any case and must not lead to kinking of the inner flow channel.

In Western Europe, a tap hole with an inside diameter of 35 mm +2/-1 mm is usually provided, with the outside diameter of 34 mm taking priority in practice. Accordingly, whenever the fitting is not simply placed on the tap hole from above, but is mounted using a mounting sleeve with an external thread protruding through the tap hole, a generally circular mounting opening of less than 32 mm is available for the hose to be pushed through. The circumference of the deflection element provided according to the invention, together with the hoses attached to it, must be correspondingly smaller. If space is already required for other components within the assembly sleeve, the area of the hose bend including the deflection element projected into the tap hole level must be even smaller, i.e. so small that the remaining available opening area is sufficient to allow the hose to move. To put it simply, the deflection element has such a width or occupies so little area in plan that it can be pushed through the opening cross section of the mounting sleeve or the tap hole without any problems.

Because the end of the mixed water pipe no longer needs to be connected to the basic housing of the fitting, the fitting can be completely pre-assembled, i.e. with the mixed water hose and both cold and hot water supply lines, and checked for leaks. Only the ends of the feed lines then still hang out of the mounting sleeve at the bottom, preferably in a vertically stepped manner. Fitting, mounting sleeve and all water-carrying lines can be pushed through the tap hole as a unit. As soon as the two inlet lines are screwed to the corner valves, the fitting is fully assembled and ready for use.

The deflection element can have hose connection pieces that allow a connection that can be released later. But it can also be provided be to permanently connect the ends of the hose sections to the hose connection pieces of the deflection element, e.g. B. by gluing or welding.

The mixed water line can have a hybrid design in that a first part leading downwards from the mixer unit is designed as a rigid pipe, in particular a metal pipe, which then continues in a hose section.

However, the mixed water line can also be formed almost entirely from a flexible hose which is only divided into two sections at the deflection point by the deflection element used there.

In a preferred embodiment, the deflection element is developed in such a way that a functional element that engages in the waterway can be inserted from the outside. This can be a flow restrictor, a non-return valve, a strainer or a silencer. In principle, these elements could be used from one of the two hose connection pieces. However, so that a later replacement of the functional elements is possible without removing the hose sections, the deflection element should have an opening that is accessible from the outside, which z. B. can be closed with a screw plug. If this z. B. is arranged at the apex of the deflection element, no additional space is claimed within the opening cross-section of the mounting sleeve or the tap hole.

Fig. 1

eine Wasserauslaufarmatur in perspektivischer Ansicht von außen;

Fig. 2

die Wasserauslaufarmatur in teilweise geschnittener seitlicher Ansicht;

Fig. 3A-3C

mehrere Montageschritte bei der Montage der Wasserauslaufarmatur, jeweils in einer perspektivischen Ansicht der Mischwasserleitung und der Montagehülse;

Fig. 4

Teile einer weiteren Ausführungsform einer Wasserauslaufarmatur in perspektivischer Ansicht;

Fig. 5A-5C

mehrere Montageschritte bei der Montage der Wasserauslaufarmatur nach Figur 4, jeweils in einer perspektivischen Ansicht der Mischwasserleitung und der Montagehülse;

Fig. 6

Teile eines Schlauchs mit einem nicht beanspruchten, knickbaren Umlenkelement in perspektivischer Ansicht und

Fig. 7

das nicht beanspruchte, knickbare Umlenkelement nach Figur 6 im Schnitt

The invention is explained in more detail below with reference to the exemplary embodiments illustrated in the drawings. The figures show in detail:

1

a water outlet fitting in a perspective view from the outside;

2

the water outlet fitting in a partially sectioned side view;

Figures 3A-3C

several assembly steps when assembling the water outlet fitting, each in a perspective view of the mixed water pipe and the assembly sleeve;

4

Parts of a further embodiment of a water outlet fitting in a perspective view;

Figures 5A-5C

several assembly steps when assembling the water outlet fitting figure 4 , each in a perspective view of the mixed water pipe and the mounting sleeve;

6

Parts of a hose with a non-claimed, bendable deflection element in a perspective view and

Figure 7

after the unclaimed, bendable deflection element figure 6 on average

figure 1 shows a water outlet fitting 100 in a perspective view from the outside. It comprises a basic housing 10 with a hand lever 14 and an angled spout 11, at the end of which a spray gun 12 is inserted. The aforementioned parts form that part of the water outlet fitting 100 which is visible after this z. B. is mounted on a countertop, or a sink.

A mounting sleeve 13 is inserted into the basic fitting housing 10 from below. This is hollow on the inside and allows a total of at least four water-carrying pipe sections to pass through. This involves a cold water and a hot water inlet, which are not shown here, as well as two sections of a mixed water line. The mixed water line has a short section 20 leading from the water outlet fitting 100 to below the assembly level, which is designed as a pipe and to which a long section 32 of the hose 30 is connected, which leads to the dish sprayer 12 . The lower area the mixed water line with the two hose sections 31, 32 is flexible. As a result, the dishwashing spray 12 can be pulled out of the outlet pipe 11, with the shape and length of the mixed water line changing.

In the embodiment shown, the first part of the mixed water line is formed by a metal tube 20 . The metal tube 20 has a smaller diameter than the hose 30 and thus requires less of the opening cross section within the mounting sleeve 13 . A second hose section 32 runs parallel to this. The two hose sections 31 , 32 are connected to one another via a deflection element 33 . The deflection element 33 is Y-shaped and has three hose connection pieces 33.1, 33.2, 33.3.

figure 2 shows the water outlet fitting 100 in a side view, with the fitting base housing 10 and the mounting sleeve 13 being shown in section in order to show the course of the mixed water line. This begins in the form of the metal tube 20 in a bore in the basic fitting housing 10, which is connected to a mixed water outlet of a temperature mixing unit 15, and then continues as a flexible hose.

If the dishwashing spray 12 is pulled out of the spout 11, the hose section 32, which is routed through the interior of the basic fitting housing 10 and the spout 11, is pulled upwards, which in turn causes its lower end, which is connected to the deflection element 33, to be pulled up . Due to the fact that the metal tube 20 forms a rigid fastening point with the connecting element 21, the partial section 31 of the hose 30 is deformed into a loop which is indicated by the dashed lines.

The deflection element 33, which is connected to an additional sinker weight 34 in the illustrated embodiment, is deflected to the side. The hybrid design of the mixed water line, consisting of the Metal tube 20 and the flexible hose 30 connected thereto make it possible to specify the direction in which the loop 31' is formed. In a typical arrangement of the water outlet fitting 100, in which the central axis of the hand lever 14 is aligned parallel to the wall surface behind the sink, the loop 31' of the first partial section 31 is formed in a plane parallel to the wall plane, i.e. for example in the rear area of a base cabinet, so that the mobility of the loop 31' is not impeded by objects placed further forward or fixtures such as a rubbish bin.

It is essential to the invention that both tube sections 31, 32 and, if applicable, also the coupling point of the first and second sections 31, 32 via the deflection element 33, including any additional elements attached thereto, such as the sinker weight 34, only require a small width that is smaller than the clear opening diameter of the mounting sleeve 13 is. This can, as in the following Figure 3A to 3C shown, when assembling the water outlet fitting 100, the entire mixed water line in the form of the metal pipe 20 with attached hose 30 is pushed from above through the tap hole or through the mounting sleeve 13 inserted into the tap hole.

Figure 3A shows a first assembly phase. The lower parts of the mixed water line, in particular the hose sections 33.1, 33.2 with the deflection element 33, are located directly above the upper edge of the mounting sleeve 13. The mounting sleeve 13 is shown with the usual sealing rings, support elements and fastening nuts with which the water outlet fitting 100 is fastened to the subsurface becomes.

In Figure 3B the deflection element 33 is already inside the mounting sleeve, that is, its two hose connection pieces 33.1, 33.2 must fit next to each other in the clear opening cross section of the mounting sleeve.

How Figure 3C shows, even the connecting element 21, which connects the metal pipe 20 and the short hose section 31 to one another, fits through the mounting sleeve 13 at the same time as the other hose section 32 that is adjacent thereto.

figure 4 shows parts of a further embodiment of a water outlet fitting 100' in a perspective view from the outside. The basic housing, which is identical to the first embodiment, is not shown here, but the mounting sleeve 13, the mixer unit 15 with the hand lever 14 and the dish sprayer 12 are.

In this embodiment, the entire mixed water line, which starts at the mixer unit 15, is formed by a hose 30', which includes a long and a short hose section 32', 31', which run parallel at least in the lower area. They are connected via a U-shaped deflection element 33' to two hose connection pieces 33.1', 33.2'.

In a first assembly phase, the Figure 5A shows, the hose sections 33.1', 33.2' with the deflection element 33 are located directly above the upper edge of the assembly sleeve 13.

When the hose 30' is pushed further, the deflection element 33' dips completely into the mounting sleeve 13, see FIG Figure 5B .

How Figure 5C shows, the hose sections 31 ′, 32 ′ guided side by side can be pushed down through the mounting sleeve 13 without any problems, even if there is already a cold water supply line and a hot water supply line in the opening cross section of the mounting sleeve 13 . During later use, the short hose section 31' coming from the mixer unit then remains almost immobile in the passage in the mounting sleeve, while the long hose section is moved when the dishwashing spray is pulled in and out. This will do that Deflection element deflected laterally, and there is a similar movement as in figure 2 implied.

In 6 , which shows a variant that is not claimed, two tube sections 31", 32" are connected via a bendable deflection element 33" which has a joint axis, so that the two tube sections 31", 32" can be set at an acute angle to one another without the water flow is cut off. In order to achieve a deflection of 180°, several deflection elements 33" can be linked together. Or the ends of the tube sections are deformed in such a way that the tube sections can be guided away parallel to one another when the joint is buckled.

7 shows a possible internal structure of the bendable deflection element 33". figure 6 on average. A hose connector 33.1" is to be connected to the hose section 31". It contains an inner flow channel, which opens out at a transverse bore in a tapered end section 33.3". Another hose connection piece 33.2" is to be connected to the hose section 32". It also contains an inner flow channel. The hose connection piece 33.2" ends in a fork 33.4", in which the tapered end section 33.3" of the hose connection piece 33.1" is received. The transverse bore in the end section 33.3" is aligned with two internal outlet openings of the flow channel on the fork 33.4". The transfer of the water between the hose connection pieces 33.1", 33.2" is on this Way allows regardless of how the hose connectors 33.1", 33.2" are set to each other by pivoting about an axis 33.5".

Claims (11)

1. Water outlet fitting (100; 100') with an extensible dish rinser (12), provided for mounting on a tap hole with a diameter of 35 mm + 2/-1 mm,
   at least comprising:

   - a fitting basic housing (10);

   - a mixer unit (15) which is insertable into a recess in the fitting basic housing (10) and has at least one mixed water outlet;

   - a flexible hose (30; 30') which extends from the mixed water outlet to outside the fitting basic housing (10) and from there through the fitting basic housing (10) as far as the dish rinser (12) and which is divided into a first hose portion (31; 31') and a second hose portion (32; 32'),

   - a cold water supply line guided to the mixer unit (15), and a hot water supply line;

   characterized

   - in that the hose portions (31, 32; 31', 32') are connected to one another at at least one deflecting point via at least one deflecting element (33; 33'; 33") which has at least one inner deflecting channel, wherein the hose portions (31, 32; 31', 32') are attached to the same side of the deflecting element (33; 33') and are arranged next to one another and, in the non-extended state of the dish rinser, parallel to one another,

   - in that the deflecting element (33; 33') with the hose portions (31, 32; 31', 32') fitted thereto is smaller than the clear opening cross section of the tap hole or of a mounting sleeve (13) which is insertable into the tap hole.
2. Water outlet fitting (100; 100') according to Claim 1, characterized in that the deflecting element (33; 33') has at least two hose connection pieces (33.1, 33.2; 33.1', 33.2') which lie next to one another and to each of which a hose portion (31, 32; 31', 32') can be fitted.
3. Water outlet fitting (100; 100') according to Claim 1 or 2, characterized in that a sinking weight (34) is connected to the deflecting element (33; 33').
4. Water outlet fitting (100; 100') according to one of Claims 1 to 3, characterized in that at least one functional element can be inserted into the inner deflecting channel of the deflecting element (33; 33').
5. Water outlet fitting (100; 100') according to Claim 4, characterized in that the functional element is a flow-limiting element and/or a sound damper element and/or a backflow-preventing valve element.
6. Water outlet fitting (100; 100') according to one of Claims 1 to 5, characterized

   - in that the deflecting element (33; 33') is Y-shaped and has three hose connection pieces (33.1, 33.2, 33.3),

   - in that the deflecting element (33; 33') connects the hose ends to one another at the hose connection pieces (33.1, 33.2) which are positioned next to one another, and

   - in that the sinking weight (34) is attached to the central hose connection piece (33.3) of the deflecting element (33; 33').
7. Water outlet fitting (100') according to one of Claims 1 to 5, characterized in that the deflecting element (33') is U-shaped or horseshoe-shaped.
8. Water outlet fitting (100; 100') according to one of the preceding claims, characterized by a curved or angled outlet pipe (11) which is pivotably connected to the fitting basic housing (10) and through which the hose (30; 30') extends and at the end of which the dish rinser (12) is held.
9. Water outlet fitting (100; 100') according to one of the preceding claims, characterized in that the cold water supply line and the hot water supply line can be bundled together with the deflecting element (33; 33') with the hose portions (31, 32; 31', 32'), which are fitted thereto, to form a line package which is smaller than the clear opening cross section of the tap hole or of a mounting sleeve (13) which is insertable into the tap hole.
10. Fitting arrangement with a work top or a sink having at least one tap hole, and with a water outlet fitting (100; 100') according to one of the preceding claims, wherein the deflecting element (33; 33') with the hose portions (31, 32; 31', 32'; 31'', 32''), which are fitted thereto, can be inserted into the opening cross section from that side of the work top or sink on which the fitting basic housing (10) is arranged.
11. Fitting arrangement according to Claim 10, characterized by a mounting sleeve which is inserted into the tap hole and is connected to the fitting basic body (10) and through which the hose portions (31, 32; 31', 32') and the cold and hot water lines are guided to the fitting basic body.

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